EX-96.1 5 ex_465792.htm EXHIBIT 96.1 HTML Editor

Exhibit 96.1

 

 

2022 TECHNICAL REPORT ON THE

HORSESHOE-RAVEN PROJECT,

SASKATCHEWAN

 

 

Uranium Energy Corp.

 

 

Effective Date: October 31, 2022

 

image01.jpg

 

 

 

 

 

Nathan A. Barsi, P.Geo.

 

Christopher J. Hamel, P.Geo.

 

Roger Lemaitre, P.Eng., P.Geo.

 

 

December 30, 2022

 

 

 

 

 

TABLE OF CONTENTS PAGE #
1   EXECUTIVE SUMMARY 1
  1.1 Introduction 1
  1.2 Property Description and Ownership 1
  1.3 History 2
  1.4 Geology and Mineralization 2
  1.5 Exploration 3
  1.6 Development and Operations 4
  1.7 Sample Preparation, Analyses and Security 4
  1.8 Data Verification 4
  1.9 Metallurgy 4
  1.10 Mineral Resource and Mineral Reserve Estimates 4
  1.11 Recovery Methods 7
  1.12 Adjacent Properties 8
  1.13 Permitting Requirements 8
  1.14 Conclusions and Recommendations 8
2   INTRODUCTION 10
  2.1 Work Program 10
  2.2 Basis of the Technical Report 10
  2.3 Qualifications of Authors and UEX Team 10
  2.4 Site Visit 11
  2.5 Previous Reports 11
  2.6 Key Definitions 11
  2.7 Declaration 11
3   PROPERTY DESCRIPTION 12
  3.1 Mineral Tenure 13
  3.2 Mining Rights in Saskatchewan 15
  3.3 Underlying Agreements 15
  3.4 Permits and Authorization 15
  3.5 Environmental Considerations 15
4   ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY 16
  4.1 Accessibility 16
  4.2 Local Resources and Infrastructure 16
  4.3 Climate 17
  4.4 Physiography 17
5   HISTORY 19
  5.1 Property Ownership 19
  5.2 Exploration and Development History 19
  5.3 Early Uranium Exploration (1968 to 2002) 20
  5.4 Historical Mineral Resource Estimates 21
  5.5 Historical Production 21
6   GEOLOGICAL SETTING AND MINERALIZATION 22
  6.1 Regional Geology 22
  6.2 Geology of the Horseshoe-Raven Property: Distribution of Lithologies 26
  6.3 Pre-Athabasca Lithologies on the Hidden Bay Property: Wollaston Group  
    6.3.1 Lower Pelitic Gneiss 27
    6.3.2 Meta-Arkose Unit 27
    6.3.3 Carbonate and Calc-Silicate Units at the top of the Meta-Arkose Sequence 28
    6.3.4 Hidden Bay Assemblage 28
    6.3.5 Granitic Rocks and Other Igneous Lithologies in the Region 28
    6.3.6 Paleoweathering/Saprolite at the Top of the Basement Rocks 28
    6.3.7 Granite Sills and Dykes in the Wollaston Group 29
    6.3.8 Granitic Gneiss in Quartzite of Hidden Bay Assemblage 29

 

i

 

    6.3.9 Pegmatite Sills and Dykes 31
    6.3.10 Post-Metamorphic Sediments: Athabasca Sandstone 31
    6.3.11 Paleoweathering/Saprolite at the Top of the Basement Rocks 31
  6.4 Structural Setting of the Horseshoe-Raven Property 32
    6.4.1 Penetrative Deformation and Folding 32
    6.4.2 D1 Deformation 32
    6.4.3 D2 Deformation 32
  6.5 Mineralization 33
  6.6 Local Geology of the Horseshoe and Raven Deposits 34
    6.6.1 Host Lithologies to the Horseshoe and Raven Deposits 34
    6.6.2 Structural Setting - Metamorphic Structural Architecture 34
    6.6.3 Mineralization 34
  6.7 Athabasca Uranium Deposits 35
    6.7.1 Sandstone-Hosted Deposits 36
    6.7.2 Basement-Hosted Deposits 36
7   EXPLORATION 39
  7.1 Geophysics in the Horseshoe and Raven Deposit Area 39
  7.2 Drilling in the Horseshoe and Raven Deposit Area 40
    7.2.1 Historical Drilling by Gulf in the Horseshoe and Raven Area 42
  7.3 Drilling (Mid-2009 – 2012) 42
  7.4 Core Handling, Drillhole Surveys and Logistical Considerations during the Mid-2009 – 2012 Drilling Programs 65
    7.4.1 Drillhole Field Locations and Surveys 66
    7.4.2 Downhole Surveys 66
    7.4.3 Drill Core Handling Procedures 66
    7.4.4 Core Recovery 67
    7.4.5 Drill Core Logging 67
    7.4.6 Geotechnical Logging 68
    7.4.7 Radiometric Probing of Drillholes 69
    7.4.8 Relationship between Sample Length and True Thickness 69
    7.4.9 Hydrogeology 70
8   SAMPLE PREPARATION, ANALYSES AND SECURITY 71
  8.1 Horseshoe and Raven Geochemical Sample Collection 71
  8.2 Drillhole Sampling Quality and Representativeness 72
  8.3 Shipping and Security 73
  8.4 Geochemical Analyses 73
    8.4.1 Analytical Procedures 73
    8.4.2 SRC Geoanalytical Laboratories U3O8 Method Summary 74
    8.4.3 Laboratory Audits 74
  8.5 Uranium Equivalent Grades 74
  8.6 Dry Bulk Density Samples 75
    8.6.1 Analytical Methods 76
  8.7 Summary 78
    8.7.1 Verifications of Analytical Quality Control Data 79
9   DATA VERIFICATION 89
  9.1 Qualified Person Data Verification 89
  9.2 Database Verification 89
  9.3 Logging and Sampling Procedure Review 90
  9.4 Collar Position 90
    9.4.1 Downhole Surveys, Collar and Lithology Review 90
  9.5 Assay and Bulk Densities Databases 91
  9.6 Independent Samples 91
  9.7 Conclusion 92
  9.8 QP Comments 92
10   MINERAL PROCESSING AND METALLURGICAL TESTING 93

 

ii

 

11   MINERAL RESOURCE ESTIMATE 95
  11.1 Introduction 95
  11.2 Mineral Resource Estimation Methodology 95
  11.3 Resource Database 96
  11.4 Geological Modelling 97
  11.5 Specific Gravity 99
  11.6 Composites 102
  11.7 Capping 102
  11.8 Block Model Definition 105
  11.9 Search Ellipsoid 105
  11.10 Estimation Strategy 106
  11.11 Block Model Validation 107
    11.11.1 Block Volume/Solid Volume Comparison 107
    11.11.2 Visual Validation of Sections 107
    11.11.3 Swath Plots 109
    11.11.4 Validation Author Statement 111
  11.12 Mineral Resource Classification 111
  11.13 Grade Sensitivity Analysis 113
  11.14 Resource Uncertainty and Prospect of Economic Extraction 114
12   MINERAL RESERVE ESTIMATES 115
13   MINING METHODS 116
14   PROCESS AND RECOVERY METHODS 117
15   INFRASTRUCTURE 118
16   MARKET STUDIES 119
17   ENVIRONMENTAL STUDIES, PERMITTING, PLANS, NEGOTIATIONS OR AGREEMENTS WITH LOCAL INDIVIDUALS OR GROUPS 120
18   CAPITAL AND OPERATING COSTS 121
19    ECONOMIC ANALYSIS 122
20   ADJACENT PROPERTIES 123
21   OTHER RELEVANT DATA AND INFORMATION 124
22   INTERPRETATION AND CONCLUSIONS 125
23   RECOMMENDATIONS 126
  23.1 Preliminary Economic Assessment 126
  23.2 Additional Field Duplicate Sampling 126
  23.3 Advanced Metallurgy 126
24   REFERENCES 128
25   RELIANCE ON OTHER EXPERTS 134
26   DATE AND SIGNATURE PAGES 135

 

iii

 

 

LIST OF FIGURES

Page #

Figure 3‑1: Location of the Horseshoe-Raven Property in Saskatchewan, Canada

12

Figure 3‑2: Land Tenure Map of the Horseshoe-Raven Property

14

Figure 4‑1: Typical Landscape in the Horseshoe-Raven Property Area

18

Figure 6‑1: Regional Geology Setting

23

Figure 6‑2: Horseshoe-Raven Local Area Stratigraphy

24

Figure 6‑3: Geological Sketch Map of the Athabasca Basin.

25

Figure 6‑4: Idealized cross-section through the eastern Cree Lake zone

26

Figure 6‑5: Horseshoe-Raven Property Local Geology

30

Figure 6‑6: Types of Unconformity-Type Uranium Deposits

38

Figure 7‑1: Horseshoe and Raven Drillhole Collars

41

Figure 7‑2: Recent Historical Drilling on the Horseshoe-Raven Property

44

Figure 8‑1: Logarithmic Plot of Dry Bulk Density versus Uranium Grade in Corresponding Geochemical Samples

78

Figure 8‑2: Quantile - Quantile Plot of Laboratory Bulk Density Replicated for Batches Submitted for all Seasons Prior to September 2008

78

Figure 8‑3: Quantile - Quantile Plot of Laboratory Bulk Density Replicated for Batches Submitted between September 2008 and June 2009

79

Figure 8‑4: Control Chart for Reference Material CG51509* analyzed for Uranium at SRC

83

Figure 8‑5: Control Chart for Reference Material CAR110 analyzed for Uranium at SRC

84

Figure 8‑6: Control Chart for Reference Material BL-2a analyzed for %U3O8 at SRC

84

Figure 8‑7: Control Chart for Reference Material BL-3* analyzed for Uranium and %U3O8 at SRC

85

Figure 8‑8: Control Chart for Reference Material BL-4a* analyzed for Uranium and %U3O8 at SRC

85

Figure 8‑9: Control Chart for Reference Material UEX08* analyzed for Uranium and %U3O8 at SRC

86

Figure 8‑10: Control Chart for Reference Material UEX02* analyzed for Uranium and %U3O8 at SRC

86

Figure 8‑11: XY Chart for Lab Replicates Analyzed for Uranium at SRC 2009

88

Figure 8‑12: RPD Chart for Lab Replicates Analyzed for Uranium at SRC 2009

88

Figure 8‑13: XY Chart for Lab Replicates Analyzed for Uranium SRC 2011

89

Figure 8‑14: RPD Chart for Lab Replicates Analyzed for Uranium SRC 2011

89

Figure 11‑1: Horseshoe Wireframe Plan View (Looking Down)

100

Figure 11‑2: Horseshoe Wireframe Isometric View (Looking NNE)

100

Figure 11‑3: Raven Wireframe Plan View (Looking Down)

101

Figure 11‑4: Raven Wireframe Isometric View (Looking NNE)

101

Figure 11‑5: Horseshoe Density vs U3O8

102

Figure 11‑6: Raven Density vs U3O8

103

Figure 11‑7: Log Probability Plot for Horseshoe Composite and Trimmed Assays

105

Figure 11‑8: Log Probability Plot for Raven Composite and Trimmed Assays

106

Figure 11‑9: Horseshoe Visual Check of Drillhole Grades against Block Grades (Section Orientation of 335°)

108

Figure 11‑10: Raven Visual Check of Drillhole Grades against Block Grades (Section Orientation of 345°)

109

Figure 11‑11: Horseshoe Swath Plot in the X Direction

110

Figure 11‑12: Raven Swath Plot in the X Direction

110

 

iv

 

LIST OF TABLES

Page #

Table 1‑1: Horseshoe and Raven Deposits Mineral Resource Estimates

6

Table 1‑2: Grade Sensitivity Analysis Using Global Block Model Quantities and Grade Estimates at Various U3O8 Cut-Off Grades

7

Table 3‑1: Mineral Tenure Information for the Horseshoe-Raven Property

13

Table 5‑1: Historical Drilling by Other Companies on the Horseshoe-Raven Property

20

Table 7‑1: Summary of Drilling on the Horseshoe-Raven Property

42

Table 7‑2: Summary of Drilling by UEX on the Horseshoe-Raven Project

45

Table 7‑3: Assay Results Mid-2009 through 2012

47

Table 7‑4: UEX Lithology Legend

68

Table 8‑1: Horseshoe Bulk Density (g/cm3) Statistics Grouped by Lithology

76

Table 8‑2: Raven Bulk Density (g/cm3) Statistics Grouped by Lithology

77

Table 8‑3: Average Dry Bulk Densities (g/cm3) by Grade Bins

77

Table 8‑4: Number of Samples for Each Deposit by Year

80

Table 8‑5: Summary of the Horseshoe and Raven QC Results for the Reporting Period 2005 to September 2008 (Baldwin, 2009)

81

Table 8‑6: Summary of the Horseshoe and Raven QC Results for the Reporting Period September 2008 to June 2009 (Baldwin, 2009)

82

Table 8‑7: Summary of Horseshoe and Raven QC Results for the Reporting Period July 2009 to 2011

83

Table 9‑1: Raven Collars, Comparison between QP's GPS and UEX Database

92

Table 9‑2: Independent Samples taken by Golder at Horseshoe and Raven

94

Table 11‑1: Horseshoe and Raven Deposits Exploration Drillholes

98

Table 11‑2: Horseshoe Density Statistics

102

Table 11‑3: Raven Density Statistics

104

Table 11‑4: Basic Statistics for Mineralized Wireframes at Horseshoe and Raven

106

Table 11‑5: Horseshoe and Raven Deposits Block Model Specifications

107

Table 11‑6: Search Ellipse Parameters for Horseshoe and Raven Estimation

107

Table 11‑7: Estimation Parameters for Horseshoe and Raven Deposits

108

Table 11‑8: Volume Estimated per Pass for Each Deposit

109

Table 11‑9: Wireframe Volume vs Block Model Volume

109

Table 11‑10: Cut-Off Grade Determination

114

Table 11‑11: Horseshoe and Raven Deposits Mineral Resource Estimates

115

Table 11‑12: Global Block Model Quantities and Grade Estimates at Various U3O8 Cut-Off Grades

115

Table 23‑1: Cost Break Down of Metallurgical Drill Program

130

 

v

 

1

EXECUTIVE SUMMARY

 

1.1

Introduction

 

The Horseshoe-Raven Property (the “Property”) is in the Wollaston Lake area of Northern Saskatchewan, approximately 695 kilometres (“km”) north of Saskatoon, southwest of Wollaston Lake. The Property is located approximately four km south of the uranium mill at Rabbit Lake and 431 km north of the town of La Ronge. The Property is 100% owned by UEX Corporation (“UEX”), a wholly-owned subsidiary of Uranium Energy Corporation (“UEC” or the “Company”), and is 4,486 hectares comprised of one mineral claim as of the effective date of this Technical Report Summary, to which UEX has title.

 

The Property is in the eastern Athabasca uranium district, adjacent to several current and past producing uranium deposits on the Rabbit Lake property of Cameco Corporation (“Cameco”), and the McClean Lake property operated by Orano Canada Inc. (“Orano”). The Property is accessible year-round by Highway 905, a maintained all-weather gravel road, and by maintained access and mine roads to the Rabbit Lake and McClean Lake mining operations, which pass through the Property. Infrastructure is well developed in the local area, with two operating uranium ore processing facilities, Rabbit Lake and McClean Lake, located four km northeast and 22 km northwest of the Horseshoe and Raven Deposits, respectively. The principal hydroelectric transmission lines that service both facilities also pass through the property, over the Horseshoe and Raven Deposits.

 

This Technical Report Summary (the “TRS”) has been prepared for UEC by Mr. Nathan Barsi (UEX’s District Geologist), Mr. Chris Hamel (UEX’s VP Exploration and the Company’s Vice President Exploration, Canada) and Mr. Roger Lemaitre (UEX’s former President and CEO), pursuant to Regulation S-K Subpart 1300, “Modernization of Property Disclosures for Mining Registrants” (“S‑K 1300”). This TRS identifies and summarizes the scientific and technical information and conclusions reached concerning the Initial Assessment (“IA”) to support disclosure of mineral resources on the Property. The objective of this TRS is to disclose the mineral resources on the Property.

 

UEX became a wholly-owned subsidiary of UEC on August 19, 2022. Much of the technical work reported herein was completed prior to the acquisition of UEX by UEC. Thus, while the TRS will include statements such as “UEX completed”, or “UEX provided”, the reader is cautioned that when UEX is mentioned it should be interpreted that such work was completed prior to the completion of the acquisition.

 

1.2

Property Description and Ownership

 

The Property is in the Wollaston Lake area of Northern Saskatchewan, approximately 695 km north of Saskatoon, southwest of Wollaston Lake. The Property measures approximately 4,486 hectares comprising one mineral claim as of the effective date of the TRS, to which UEX has title.

 

 

1

 

In Saskatchewan, mineral resources are owned by the Crown and managed by the Saskatchewan Ministry of the Economy through the Crown Minerals Act and the Mineral Tenure Registry Regulations, 2012. Staking for mineral dispositions in Saskatchewan is conducted through the online staking system, Mineral Administration Registry Saskatchewan (“MARS”). The mineral disposition for the Property was staked in 1977. Accordingly, ground staking methods were employed prior to the initiation of staking by the MARS system. These dispositions give the stakeholders the right to explore the lands within the disposition area for economic mineral deposits.

 

UEC’s wholly-owned subsidiary, UEX, holds a 100% interest in the Property, subject to standard royalties to the Government of Saskatchewan.

 

Access to the Property is via Highway 905, a well-maintained gravel road accessible year-round that passes through the central portion of the Property and over the west end of the Raven Deposit. Year-round access is possible by truck. The topography of the area is relatively flat characterized by undulating glacial moraine, outwash, and lacustrine plains.

 

1.3

History

 

The Property was initially explored in the late 1960s as part of the greater Rabbit Lake Property after the discovery of the Rabbit Lake Uranium Deposit in 1968.

 

Early exploration for uranium was conducted by Gulf Minerals Canada Limited (“Gulf”), and Conwest Exploration Company Limited (Conwest). Eldorado Nuclear Limited acquired Conwest in 1979, Gulf in 1982 and amalgamated with Saskatchewan Mining and Development Corporation (“SMDC”) to form Cameco in 1988. Cameco transferred title to the Hidden Bay Property to UEX through an agreement reached with Pioneer Metals Corporation (“Pioneer”) in 2001.

 

The Horseshoe-Raven deposit was discovered in two stages, four years after the discovery of the Rabbit Lake Mine. In the fall of 1972, drill testing of a ground conductor became the discovery hole for the Raven Deposit. Subsequent drilling through 1973 and 1974 outlined the deposit. During the final year of the Raven Deposit drilling, the discovery hole of the Horseshoe Deposit intersected uranium mineralization to the east of the Raven Deposit while testing a geophysical anomaly similar to the Raven Deposit signature. Subsequent diamond drilling during the period of 1974 to mid-1975 succeeded in outlining the Horseshoe Deposit (Studer, 1984).

 

1.4

Geology and Mineralization

 

The Property is located just east of the eastern margin of the Athabasca Basin. It is underlain by Paleoproterozoic metasedimentary gneiss and Archean granitic gneiss basement rocks of the Hearne Province. The basement rocks of the Property are within the Cree Lake zone of the Early Proterozoic Trans-Hudson orogenic belt. The Cree Lake zone is further subdivided into three transitional lithotectonic domains, of which the Property lies within one of them, the Wollaston Domain. Lithologies and foliation of the Wollaston Domain rocks of the Property trend northeast with predominantly moderate to steep southeast dips, although northwest dips occur as the result of the broad synform that is the host to uranium mineralization at Horseshoe and Raven.

 

2

 

The Wollaston Domain is composed of a mixed sequence of metamorphosed arkosic sandstones and pelitic to semi-pelitic gneisses that make up four successive lithostratigraphic units, of which the upper three are present in the deposit area:

 

A basal pelitic gneiss composed of coarse, mature quarzitic to arkosic metasedimentary rocks;

 

A meta-pelite, commonly graphitic and interlayered with quartzitic semi-pelite and calc-silicate;

 

A thick meta-arkose interlayered with minor calc-silicate and pelite; and

 

Upper amphibole-quartzite interlayered with calcareous metasedimentary rocks and graphitic pelite, known as the Hidden Bay assemblage.

 

The Horseshoe and Raven Deposits are hosted by the Hidden Bay Assemblage, which occurs within a complex northeast trending D2 synclinorium that sits structurally above and south of the underlying meta-arkose unit of the Daly River subgroup. The synclinorium is cored by quartzite that is succeeded outward concentrically from the core of the folds by other components of the Hidden Bay Assemblage, which include a mixed sequence of calc-arkose, additional quartzite, locally graphitic sillimanite-bearing pelitic schist and amphibolite.

 

Lithologies in the Horseshoe and Raven areas outline several significant, upright open D2 (F2) folds in the local area. These folds have steep to moderate southeasterly dipping axial planes and horizontal to shallow northeast plunging fold axes.

 

Mineralization at the Horseshoe Deposit has been defined over a strike length of approximately 800 m and occurs at depths between 100 m and 450 m below surface. Mineralization occurs in several stacked and shallow plunging shoots that generally follow the fold axis of a gently folded arkose-quartzite package. Uranium mineralization is often best developed along the dilational zones developed between the bedding units.

 

The Raven Deposit is located 500 m southwest of the Horseshoe Deposit and has been defined over a strike 1000 m and ranges between 100 m and 300 m in depth. The bulk of the uranium mineralization occurs in two sub-horizontal tabular zones that are oriented parallel to the axial plane of the folded arkose-quartzite package.

 

1.5

Exploration

 

After acquiring the claims comprising the Property in 2002, UEX continued to explore various targets on the Property, utilizing a combination of airborne and ground electromagnetic (“EM”), magnetic, radiometric resistivity and gravity geophysical methods in more grassroots target areas to identify drilling targets, or direct follow-up drilling in areas where previous drilling had intersected alteration or mineralization.

 

UEX also initiated a re-evaluation of the Horseshoe and Raven deposits due to rising uranium prices. In 2005, drilling tested mineralization in selected areas of both deposits to test mineralization continuity between the widely-spaced historical holes drilled by Gulf. The success of that program led to subsequent drilling programs between 2006 and 2009, in which 376 diamond drillholes totaling 119,400 m were drilled at Horseshoe and 243 drillholes totaling 65,600 m were drilled at Raven. These programs not only established continuity of mineralization between the historical Gulf drilling, but expanded the deposit footprints into areas not historically drilled by Gulf.

 

3

 

Additional drilling was completed in the summer of 2009 and 2011, bringing the total drillholes for Horseshoe to 404 (128,179.8 m) and 311 drillholes (82,205.8 m) for Raven. The results of these holes were incorporated into the existing database and used to update the resource estimates, which are discussed in this TRS.

 

1.6

Development and Operations

 

There is no permanent infrastructure or capacity to conduct mining operations on the Property.

 

1.7

Sample Preparation, Analyses and Security

 

All samples from 2005, 2006, 2007, 2008, 2009 and 2011 drilling programs were submitted by ground courier to the Saskatchewan Research Council (“SRC”) in Saskatoon. SRC is accredited to the ISO 17025 standard by the Standards Council of Canada for a number of specific test procedures, including U3O8 analysis and specific gravity.

 

Chris Hamel, P.Geo. (APEGS#12985), co-author and Qualified Person (“QP”) of this TRS undertook the analysis of analytical control data for the Horseshoe and Raven Deposits. In the opinion of the QP, the sample preparation, security and analytical procedures for all assay data are suitable for use in mineral resource estimation.

 

1.8

Data Verification

 

Exploration work completed by UEX in 2009 and 2011 was conducted using documented procedures and protocols involving extensive exploration data verifications and validation. During drilling, UEX geologists implemented industry-standard best practices designed to ensure the reliability and trustworthiness of the exploration data.

 

Mr. Nathan Barsi, P.Geo (UEX District Geologist) and Mr. Chris Hamel, P.Geo. (UEX Vice President, Exploration) visited the site from June 9 to June 17, 2021, to review and verify this historical work. All relevant information required for this TRS and resource model were reviewed by the QPs (core logging, sampling, database management) and the QPs are confident in the validity of the data provided within.

 

1.9

Metallurgy

 

Preliminary metallurgy was completed in 2009. Based on the test work process, uranium recoveries are estimated to be 95%. Leach tests confirmed that the Horseshoe and Raven mineralization is easily leached under relatively mild atmospheric leach conditions.

 

In 2016, UEX conducted additional metallurgical testing of Horseshoe and Raven mineralization with the objective of evaluating the potential benefit of heap leach extraction in lieu of toll milling. The testing program was conducted at SGS Lakefield Laboratories and was successful at demonstrating the potential of heap leaching. UEC is encouraged by the results of the test work and will be conducting further investigations into heap leaching at Horseshoe and Raven in the future.

 

1.10

Mineral Resource and Mineral Reserve Estimates

 

The updated resource estimation work was completed by Mr. Nathan Barsi, P.Geo. (APEGS #15012) and Mr. Roger Lemaitre P.Eng., P.Geo. (APEGS #10647) who, along with Chris Hamel, are appropriate QPs as defined under S-K 1300. The mineral resource model prepared by a QP considers 715 core boreholes (210,385 m) drilled by UEX during the period between 2005 to 2009 and 2011. The mineral resources reported herein were estimated using an inverse distance squared/block modelling approach informed from core borehole data constrained within uranium mineralization wireframes.

 

4

 

The geological model of the mineralization represents distinct irregularly shaped pods that are mappable continuously from borehole to borehole. The solid used to constrain the block model was defined using a traditional wireframe interpretation constructed from explicit modelling and sectional interpretation of the drilling data using a 0.02% U3O8 threshold. Using this threshold, a wireframe was constructed that defined the margins and continuity of the uranium mineralization at Horseshoe and Raven. Assays were composited to one m prior to construction of wireframes. Constructing a singular wireframe envelope for both deposits supersede the previous interpretation of 28 subzones for the Horseshoe Deposit and the 16 subzones from the Raven Deposit.

 

Upon completion of the wireframes, the assay sample database was trimmed to samples that only fall within the mineralized wireframe. Basic statistics, histograms and cumulative probability plots for each deposit were applied to determine appropriate capping grades. The Horseshoe Deposit grade was capped at 10%, while Raven was capped at 1.88%.

 

The resource estimate followed the block size criteria set forth in the 2009 N.I. 43-101 Horseshoe-Raven Mineral Resource Technical Report (the “2009 Report”) as a starting point, with a block size of five by five by 2.5 m for the mineralized wireframe. The blocks were visually checked by a QP in both two-dimensional (“2D”) and three-dimensional (“3D”), and it was deemed appropriate to use the existing block criteria as referenced above. Sub-cells, at 0.25 m resolution, were used to respect the geology of the modelled wireframe. Sub-cells were assigned the same grade as the parent cell. The block model was rotated on the Z-axis to honor the orientation of the mineralization.

 

Grade estimation used an inverse distance weighting squared estimation algorithm and three passes informed by the capped and trimmed to the uranium wireframe assay values. Validation checks confirm that the block estimates are a reasonable representation of the informing data set.

 

The QPs are satisfied that the geological modelling honors the current geological information and knowledge. The location of the samples and the assay data are sufficiently reliable to support resource evaluation. The sampling information was acquired by core drilling with pierce points between seven metres and 30 m apart, but generally at 10 m across section and 25 m along strike. The QPs are confident that they have modelled the overall spatial location of the uranium mineralization and that it is representative of the controls. Preliminary metallurgical data has been collected and has been disclosed above in the relevant section. The QPs consider all block estimates within the mineralized lenses to satisfy the Committee for Mineral Resources International Reporting Standards (“CRIRSCO”) classification criteria for an Indicated Mineral Resource.

 

The cut-off grade (“COG”) used to determine resources was calculated to be 0.05% U3O8 by a QP.

 

5

 

A QP determined COG by considering a cut-and-fill underground mining method for the two deposits. The limitations associated with typical cut-and-fill mining processes require that all rock present within a mineralized zone be mined and removed from the mining stope, regardless of whether or not that portion of rock is mineralized, partially mineralized or is considered to be waste rock. Thus, the cost to mine mineralized rock is equivalent to the cost of mining waste rock. In a cut-and-fill underground mining scenario, waste rock must be removed.

 

Processing, water treatment, general and administrative costs, along with mining and milling recoveries using heap leach extraction, were estimated by a QP for the Horseshoe and Raven deposits. The uranium price of US$60/lb was used and is considered reasonable given the range of spot uranium prices reported by industry price expert TradeTech between September 15, 2021 and this TRS’ effective date of December 31, 2021. An exchange rate of C$1.00 to US$0.79 was used.

 

As the cost of mining waste rock and mineralized rock are the same in cut-and-fill underground extraction, marginal COGs are determined exclusively from the processing, water treatment and general and administrative costs.

 

The marginal COG was determined using the formula:

 

COG Processing+Water Treat+G&A+ Mining Mineralization-Mining Waste in Cost per tonne  
Uranium Price (in CAD$ per t) x total recovery  

 

Criteria related to calculating COG are presented in Table 11-10. In the opinion of the QPs, the resource evaluation reported in Table 1-1 is a reasonable representation of the uranium mineralization at the Horseshoe and Raven Deposits.

 

Table 11: Horseshoe and Raven Deposits Mineral Resource Estimates

 

Horseshoe Deposit Uranium Resource*

Deposit

Category

Quantity (Tonnes)

Average Grade U3O8 (%)

Total lbs U3O8

Horseshoe

Indicated

4,982,500

0.215

23,594,000

Raven Deposit Uranium Resources*

Deposit

Category

Quantity (Tonnes)

Average Grade U3O8 (%)

Total lbs U3O8

Raven

Indicated

5,370,000

0.117

13,832,400

*Mineral resources are not mineral reserves and have not demonstrated economic viability. There is no certainty that all or any part of the mineral resource will be converted into mineral reserve. All figures are rounded to reflect the relative accuracy of the estimates. Resources were estimated using a COG of 0.05% U3O8.

 

The mineral resource model is relatively sensitive to the selection of the reporting uranium COG. To illustrate this sensitivity, the quantities and grade estimates are presented in Table 1-2 at various COGs. The reader is cautioned that the figures presented in this table should not be misconstrued with a Mineral Resource Statement. The tables are only presented to show the sensitivity of the block model estimate to the selection of U3O8 COG.

 

6

 

 

Table 12: Grade Sensitivity Analysis Using Global Block Model Quantities and Grade Estimates at Various U3O8 Cut-Off Grades

 

Horseshoe Grade Sensitivity Analysis

Cut-Off

Indicated Blocks

Grade

Volume / Quantity

 

Grade

U3O8

Volume

Tonnage

 

U3O8

(%)

(m3)

(tonnes)

 

(%)

0.01

4,113,990

10,202,696

 

0.119

0.02

3,415,704

8,470,945

 

0.140

0.05

2,009,077

4,982,512

 

0.215

0.10

1,196,033

2,966,088

 

0.313

0.15

866,315

2,148,462

 

0.386

0.20

628,722

1,559,230

 

0.466

0.25

468,775

1,162,562

 

0.548

0.30

372,190

923,032

 

0.620

0.35

300,907

746,250

 

0.689

0.40

238,923

592,530

 

0.771

Raven Grade Sensitivity Analysis

Cut-Off

Indicated Blocks

Grade

Volume / Quantity

 

Grade

U3O8

Volume

Tonnage

 

U3O8

(%)

(m3)

(tonnes)

 

(%)

0.01

5,013,261

12,432,888

 

0.066

0.02

4,117,590

10,211,623

 

0.077

0.05

2,165,334

5,370,028

 

0.117

0.10

867,706

2,151,912

 

0.186

0.15

439,339

1,089,560

 

0.250

0.20

244,018

605,165

 

0.312

0.25

149,652

371,138

 

0.368

0.30

93,338

231,479

 

0.424

0.35

60,029

148,873

 

0.481

0.40

40,251

99,822

 

0.534

 

The sensitivity analysis indicates that a large portion of the resource for the deposits are of a lower grade.

 

1.11

Recovery Methods

 

In 2016, UEX conducted additional metallurgical testing of Horseshoe and Raven uranium mineralization with the objective of evaluating the potential benefit of heap leach extraction in lieu of toll milling. The testing program was conducted at SGS Lakefield Laboratories and was successful at demonstrating the potential of heap leaching. UEX is encouraged by the results of the test work and will be conducting further investigations into heap leaching at Horseshoe and Raven in the future.

 

7

 

1.12

Adjacent Properties

 

There are no applicable adjacent properties to the Horseshoe and Raven Deposits.

 

1.13

Permitting Requirements

 

Mineral exploration on land administered by the Saskatchewan Ministry of Environment requires that surface disturbance permits be obtained before any exploration or development work is performed. The Saskatchewan Mineral Exploration and Government Advisory Committee (“SMEGAC”) has developed the Mineral Exploration Guidelines for Saskatchewan to mitigate environmental impacts from industry activity and facilitate government approval for such activities (SMEGAC, 2016). Applications to conduct an exploration work program need only to address the relevant topics of those listed in the guidelines. The types of activities are listed under the guide’s best management practices (“BMP”).

 

1.14

Conclusions and Recommendations

 

The two wireframes constructed by a QP were developed using the former authors’ subzones for each deposit as a guide. The alternate section definition and the distribution of the drillholes and assays not previously incorporated into the geological interpretation resulted in the majority of the subzones being truncated by the new wireframes interpreted by that QP.

 

The Horseshoe Deposit is estimated to contain an indicated resource of 23,594,000 lbs U3O8 with an average grade of 0.215% U3O8 at a COG of 0.05% U3O8. The Raven Deposit is estimated to contain an indicated resource of 13,832,400 lbs U3O8, with an average grade of 0.117% U3O8 at a COG of 0.05% U3O8. No inferred resources have been estimated for either deposit.

 

This results in the Horseshoe deposit’s contained uranium in indicated resources in this estimate decreased by approximately 1.5%, but the average grade increased by approximately 9% at a COG of 0.05% U3O8 when compared to the global tonnage of the resource reported in the 2009 Report. This decrease is likely attributed to the wireframes in 28 subzones in the 2009 estimate being very thin and vein-like in their original construction.

 

A QP completed a conventional inverse distance squared interpolation approach to estimate the updated mineral resource for the Horseshoe and Raven Deposits. Mineral resource estimates were constrained within geological defined wireframes based on available information.

 

The QPs are confident in the modelling of the overall spatial location of the uranium mineralization and that it is representative of the Horseshoe and Raven Deposits. The QPs consider all block estimates within the mineralized wireframe to satisfy the classification criteria for Indicated Mineral Resources.

 

Based on the geological setting, character of the uranium mineralization delineated and exploration results to date, the QPs do not recommend any future exploration work within the immediate vicinity of the Horseshoe and Raven Deposits on the Property.

 

The QPs propose that a study be initiated to determine the potential economics and viability of mining the Horseshoe and Raven Deposits. The resource estimate presented in this TRS could be used to determine whether the projects warrant advancement towards a pre-feasibility study. Completing this assessment is estimated to cost CAD $150,000 - $200,000.

 

8

 

As part of this assessment, it is recommended that UEX undertake an additional sampling program to supplement the summer 2009 to 2011 exploration programs. The field duplicate data from that period could not be easily segregated and validated from the assay database. The QPs are confident that duplicate samples were taken, but an additional sample program would eliminate any doubt of the validity of the data from the 2009 to 2011 program and eliminate any future but very minor QA/QC concerns over this subpopulation, which comprises only 7.88% of the total sample database. It is recommended to take approximately 500 new samples across both deposits, as this would represent approximately 2% of the sample population to date. The majority of the costs associated with an additional sample program would be analytical costs as the sample pulps from the original assay samples may still be available from the laboratory. If the samples are available, the estimated cost of a check sampling program would be CAD $25,000. If the pulps are not available, the cost would increase by approximately 33%, as new samples would have to be collected from the historical drill core the next time an exploration program is active at the Raven camp where the core is stored. This would cost approximately CAD $35,000.

 

Preliminary metallurgy was completed for a 2011 project report completed for UEX long before UEX’s acquisition by UEC. UEX completed additional metallurgical work in 2015, focusing on the viability of using uranium heap leach recovery. It is recommended that UEX advance the heap leach metallurgical testing to the next phase by completing additional compositing of representative samples from the Horseshoe and Raven deposits to continue developing the parameters for recovering the mineralized material in a sellable product. A recommend minimum of six tonnes of material is required for this work. The cost of completing this work would be approximately CAD $2,350,000.

 

 

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9

 

2.

INTRODUCTION

 

The Property is a development-stage project located in Saskatchewan, Canada. UEX owns 100% of the Property and operates the Property. UEX is a wholly-owned subsidiary of UEC, who is the registrant (the “Registrant”) and responsible for commissioning this TRS.

 

This TRS is an IA of the Property and includes a Mineral Resource Estimate for the Property on the Property. This TRS identifies and summarizes the scientific and technical information and conclusions reached concerning the IA to support disclosure of mineral resources on the Property. The objective of this TRS is to disclose the mineral resources on the Property. Mineral resources were completed according to the CRIRSCO classification guidelines.

 

2.1

Work Program

 

The Mineral Resource Estimate reported herein is an internal effort by UEC personnel that include the historical drillholes that were completed after the July 2009 Mineral Resource. The exploration database was compiled and maintained by UEX. The geological model and outlines for the uranium mineralization were constructed by a QP following the previous technical report’s recommendation (Palmer and Fielder, 2009) to create a singular wireframe for each deposit using a threshold grade of 0.02% U3O8. In the opinion of the QPs, the geological model is a reasonable representation of the distribution of the targeted mineralization at the current level of sampling. The geostatistical analysis and grade model was completed by a QP during the months of June 2021 through October 2021.

 

The Mineral Resource Estimate reported herein was prepared in conformity with the CRIRSCO classification criteria for an Indicated Mineral Resource and to the requirements of S‑K 1300.

 

The technical report was assembled at UEX’s regional office in Saskatoon during the period of May 2021 through October 2022.

 

2.2

Basis of the Technical Report

 

This TRS is based on information collected by UEX during the 2009, 2011 and 2012 drilling campaigns performed between July 4 to September 17, 2009, January 16 to April 15, 2011, July 4 to October 20, 2011 and February 2 to February 27, 2012, and on historical information collected by UEX during exploration programs. The QPs have no reason to doubt the reliability of the information. Other information was obtained from the public domain. This Report is based on the following sources of information:

 

Inspection of the Property area, including outcrop and drill core;

 

Historical exploration data collected by UEX; and

 

Additional information from public domain sources.

 

2.3

Qualifications of Authors and UEX Team

 

Compilation of this TRS was completed by Christopher Hamel (APEGS#12985), Nathan Barsi, P.Geo. (APEGS#15012) and Roger Lemaitre P.Eng., P.Geo. (APEGS#10647) from UEX. The responsibility for the analytical control data analysis was assumed by Chris Hamel, P.Geo. (APEGS#12985) from UEX. All aspects of land status, dispositions and claims were completed by Susan Biss (APEGS#24643) and responsibility is assumed by Mr. Barsi. By virtue of their education, membership to a recognized professional association and relevant work experience, Mr. Hamel. Mr. Barsi and Mr. Lemaitre are each considered to be a QP as defined by S-K 1300.

 

10

 

2.4

Site Visit

 

Nathan Barsi, P.Geo and Chris Hamel, P.Geo., visited the Property from June 9 to 17, 2021 as Senior Geologist and Exploration Manager, respectively. While there, the QPs reviewed drill core and cross sections through both Horseshoe and Raven deposits, resurveyed historical drill collars for accuracy, observed local geology in outcrop and checked on historical sampling intervals. Roger Lemaitre last visited the Property to inspect core and outcrop related to the Horseshoe and Raven Deposits on July 23 through July 26, 2019, wherein Mr. Lemaitre was able to examine, along with the UEX technical team, the key features of the Horseshoe-Raven deposit geology and mineralizing processes in drill core. Mr. Lemaitre was the project lead and supervised the drill programs on the Property in 2002 through 2005.

 

2.5

Previous Reports

 

This TRS represents the initial report on the Property to the U.S. Securities and Exchange Commission. The Property has previously been reported upon in Canada.

 

2.6

Key Definitions

 

For clarity, certain key entities that are referred to throughout this document are defined herewith.

 

UEX Corporation (UEX): registered owner of the Horseshoe and Raven uranium deposits located in the Athabasca Basin of Northern Saskatchewan. Prior to August 19, 2022, UEX was a Canadian publicly-listed company listed on the Toronto Stock Exchange and subject to Canadian National Instrument 43-101 regulations. On August 19, 2022, UEX became a wholly-owned subsidiary of Uranium Energy Corp.

 

Uranium Energy Corp. (UEC” or the “Company) is a NYSE, American-listed company based in Corpus Christie, Texas that owns several uranium projects, mines and processing facilities in the United States and has been the owner of UEX since August 19, 2022. UEC is the registrant to whom this IA has been prepared.

 

2.7

Declaration

 

The QPs’ opinions contained herein and effective October 31, 2022 is based on information collected by UEX throughout the course of UEX’s exploration programs.

 

The information in turn reflects various technical and economic conditions at the time of writing this TRS. Given the nature of the mining business, these conditions can change significantly over relatively short periods of time. This TRS includes technical information that requires subsequent calculations to derive subtotals, totals and weighted averages. Such calculations inherently involve a degree of rounding and consequently may introduce a margin of error. Where these occur, the QPs do not consider them to be material.

 

11

 

3.

PROPERTY DESCRIPTION

 

The Property is in the Wollaston Lake area of Northern Saskatchewan, approximately 695 km north of Saskatoon, southwest of Wollaston Lake. The Property is located within the eastern Athabasca, approximately four km south of the uranium mill at Rabbit Lake, and 431 km north of the town of La Ronge. The centre of the Property is located at approximately 103°46’00” degrees longitude west and 58°08”10” degrees latitude north (Figure 3‑1).

 

image02.jpg

 

Figure 31: Location of the Horseshoe-Raven Property in Saskatchewan, Canada

 

12

 

3.1

Mineral Tenure

 

The Property is 100% owned by UEX/UEC and is 4,486 hectares comprised of one mineral claim as of the effective date of the TRS (Figure 3-2). The mineral rights exclude surface rights, which belong to the Government of Saskatchewan. Previously, the Horseshoe-Raven claim was part of the larger Hidden Bay property. In the first quarter of 2017, mineral claim S-106962 was separated from the Hidden Bay property to form the Property. The majority of the Property boundaries are surrounded by the 100% UEC owned Hidden Bay property.

 

Under Saskatchewan law, mineral claims or cells are map staked through an online registry. The map-designated coordinates of the cells are the legal limits of said claims, the physical limits can be verified by consulting the Government’s MARS website. The QPs were able to conduct a review of the mineral title of the Horseshoe-Raven mineral dispositions online using the publicly accessible Province of Saskatchewan’s MARS.

 

Annual assessment work and claim age is tabulated in Table 3-1. None of the dispositions are subject to any royalties, back in rights or encumbrances. No mining or waste disposal has occurred on the Property and, consequently, the Property is not subject to any liabilities due to previous mining activities. The only other encumbrances on the Property are the standard royalties to the Government of Saskatchewan.

 

Table 31: Mineral Tenure Information for the Horseshoe-Raven Property

 

Disposition

Number

Record

Date

Area (Ha)

Annual Assessment ($/Ha)

Total Annual

Assessment ($)

Work Due / Lapse Date

S-106962

12/1/1977

4,486

25

$112,150

2/28/2041

Total

 

4,486

 

$112,150

 

 

 

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13

 

image03.jpg

 

Figure 32: Land Tenure Map of the Horseshoe-Raven Property

 

14

 

3.2

Mining Rights in Saskatchewan

 

In Saskatchewan, mineral resources are owned by the Crown and managed by the Saskatchewan Ministry of the Economy through the Crown Minerals Act and the Mineral Tenure Registry Regulations, 2012. Staking for mineral dispositions in Saskatchewan is conducted through the online staking system, MARS. The mineral disposition for the Property was staked in 1977. Accordingly, ground staking methods were employed prior to the initiation of staking by the MARS system. These dispositions give the stakeholders the right to explore the lands within the disposition area for economic mineral deposits.

 

3.3

Underlying Agreements

 

On behalf of UEX, the mineral claim that comprises the Property was investigated as part of a title opinion on September 7, 2021 by Robertson Stromberg, a Saskatoon, Saskatchewan-based law firm. Robertson Stromberg concluded that the claim is in good standing, is owned by UEX, and that as of September 7, 2021, there were no encumbrances, charges, security interests or instruments recorded against the claims.

 

3.4

Permits and Authorization

 

Mineral exploration on land administered by the Ministry of Environment requires that surface disturbance permits be obtained before any work is performed. The SMEGAC has developed the Mineral Exploration Guidelines for Saskatchewan to mitigate environmental impacts from industry activity and facilitate governmental approval for such activities (SMEGAC, 2016). Applications to conduct exploration work need only to address the relevant topics of those listed in the guidelines. The types of activities are listed under the guide’s BMP. Given the historical nature of the exploration data used for the basis of this TRS and the changeover of staff at UEX, the QPs do not have any reason to believe that permits were not obtained for the historical work.

 

3.5

Environmental Considerations

 

The Property, with the Horseshoe and Raven Deposits, is a mineral exploration project. The exploration work completed thus far has been limited primarily to drilling, geophysical surveys, mineral resource estimates and the establishment of a work camp with a subsequent surface lease.

 

The only liabilities on the Property are represented by drill cuttings that have been collected in drums and are stored in the fenced compound with the radioactive drill core. Additionally, there is some contaminated material that was collected from the remains of a core logging structure that burned down. The Company intends to dispose of these materials during a remediation program planned for 2023.

 

The only other liability on the site is the temporary camp facilities. Once the camp is no longer useful, these will be removed from the site along with the septic field that is part of the present camp infrastructure.

 

15

 

4.

ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY

 

4.1

Accessibility

 

The Property site is accessible by Highway 905, a well-maintained gravel road accessible year-round that passes through the central portion of the Property and over the west end of the Raven Deposit. Year-round access is possible by truck and all-terrain vehicles. Helicopters can also land at camp if necessary.

 

Two airstrips in the area, the Rabbit Lake airstrip and the Points North Landing airstrip, are serviced by several air carriers which provide scheduled flights to major population centres in Saskatchewan for mining operations, fishing and hunting lodges and road maintenance crews.

 

4.2

Local Resources and Infrastructure

 

Power (hydroelectric) and telephone lines to the mine sites link the Property area to the Saskatchewan power grid and telephone system. Abundant fresh water is available from the numerous lake and rivers in the area and is not a constraining factor for exploration operations. All infrastructure currently on the Property is semi-permanent. A surface lease is currently in good standing until 2023.

 

La Ronge, Saskatchewan is approximately 441 km south of the Property accessible by road and is the main source for groceries, fuel, materials and medical services. Additional resources not available in La Ronge may be sourced from the cities of Prince Albert and Saskatoon. An airfield owned by the Points North Group of Companies is located 24 km west northwest of the Raven camp and offers freighting services for exploration and mining activities in the eastern part of the Athabasca basin. They also offer shipment of products and services to Prince Albert and Saskatoon.

 

The Rabbit Lake mill facility, located on the adjacent Rabbit Lake property, is a fully functional uranium ore processing facility owned and operated by Cameco that is located adjacent to the Horseshoe Raven property four km northeast of the Horseshoe and Raven deposits. A second mill facility, the Jeb Mill, operated by Orano, is located 22 km to the northwest of the Horseshoe and Raven Deposits. As the Property is located adjacent to existing mines and infrastructure that have operated since the 1970s, there is sufficient skilled mining personnel, supply chains and services required to operate exploration and possible future mining operations on the Property.

 

Given the size of the Property, the QPs have no reason to believe that there would not be sufficient room for any future necessary surface infrastructure required to support potential mining operations with facilities for mine waste, processing and process waste management.

 

In Saskatchewan, surface rights are granted after the application for a mining surface lease, this process is transparent and is handled by the provincial government.

 

16

 

4.3

Climate

 

The Property is located within the Athabasca sedimentary basin region, coincident with the Athabasca Plain ecoregion and Boreal Shield Ecozone. The climate is characterized by short and cool summers with a maximum temperature of 30 degrees Celsius, and cold and long winters with a temperature low of negative 40 degrees Celsius. During the summer solstice, the period of daylight lasts nearly 18.5 hours. Winter season can start in late October and continue until May.

 

Precipitation varies during the year, reaching an average of 40 centimeters annually and is characterized by snowfall in the winter months and moderate rainfall in the summer months. Maximum precipitation occurs during the summer months of July to September.

 

Exploration activities can be carried out year-round. However, it is generally accepted practice in the province to demobilize for spring break up and also for freeze up in the fall.

 

4.4

Physiography

 

The Athabasca sedimentary basin region is characterized by variable uplands and low-lying terrain with many lakes and wetlands where peatlands and bogs are common. Vegetation is typical of the Boreal Forest, including areas dominated by black spruce forests and feather mosses. Within the forests, Jack pines commonly occur on thin-soiled uplands and tamaracks on poorly drained lowlands (Figure 4-1).

 

The Athabasca Plain ecoregion has developed on sedimentary rocks of the Athabasca Group. Bedrock rarely outcrops and is generally overlain by hummocky deposits of glacial till, glaciolacustrine and glaciofluvial sediments. The topography of the area is relatively flat, characterized by undulating glacial moraine, outwash and lacustrine plains. The elevation range of the Athabasca Plain is from 485 m to 640 m. Drumlins, eskers and meltwater channels have a typical local relief of 30 m to 60 m and contribute to the rolling expression of the terrain dominated by sandy glacial sediment.

 

Over 40 species of mammals are found in the ecozone and dominantly include caribou, moose, black bear, grey wolf, red fox, red squirrel, lynx, beaver, otter, snowshoe hare, marten, mink and shrew. The bird species common to the ecozone include the raven, grey jay, spruce grouse, chickadee, woodpecker, bald eagle, osprey and ptarmigan. Fish species common to the area include the lake trout, whitefish, northern pike, walleye, longnose sucker, white sucker, burbot and arctic grayling.

 

 

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17

 

image04.jpg

 

Figure 41: Typical Landscape in the Horseshoe-Raven Property Area

 

 

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18

 

5.

HISTORY

 

5.1

Property Ownership

 

Attention for uranium exploration was first focused on the Athabasca Sandstone of Northern Saskatchewan in 1967, when New Continental Oil Limited (“NCOL”) flew an airborne radiometric survey over the basin. Five permits were optioned in the Wollaston Lake area from NCOL in 1968 by Gulf Oil Canada Limited (later Gulf) who began investigating anomalies by prospecting, mapping, geophysical reconnaissance surveys and diamond drilling. The initial uranium discovery was made in 1968 at Rabbit Lake. The Rabbit Lake discovery led to extensive exploration on the Gulf permits. From 1969 until 1980, several deposits, including the Collins A, Collins B, Collins D, Eagle North and Eagle South deposits were discovered on the adjacent Rabbit Lake property. Subsequent to that, the Property was discovered and, later, the West Bear Uranium Deposit was made on what is today the nearby West Bear property. Jones (1980) documented the events leading to the discovery of the Collins Bay deposits that are closely associated with the Collins Bay thrust fault (Rhys, 2002).

 

Eldorado Resources Limited (“Eldorado”) acquired Gulf in October 1982. Eldorado then merged with the SMDC in 1988 to form Cameco. Previously, the Hidden Bay property was part of the lands comprising the historic Rabbit Lake property. Cameco divided the Rabbit Lake property into two parts, one consisting of the current mining property covering all the leases and active mining operations, and the consisting of all lands outside the current active operations. The second part became known as the Hidden Bay property, which at that time included the current day Property. Cameco transferred the Hidden Bay properties to UEX through an agreement reached with Pioneer in 2001. Cameco retained 100% ownership of the Rabbit Lake property lands occupied by the current mining operation. Cameco continued to oversee exploration for UEX on the Hidden Bay property between 2002 and 2005 under an exploration management service agreement. In the fall of 2005, UEX took over full operatorship.

 

Following the transfer of land from Cameco in 2002, UEX has acquired and added new dispositions to the Hidden Bay property. UEX separated the Raven and Horseshoe area and the West Bear area into independent UEX properties known as the Horseshoe-Raven Property (circa Q1, 2017) and the West Bear Property (circa 2018). UEX was subsequently acquired by UEC on August 19, 2022.

 

5.2

Exploration and Development History

 

Previous operators have employed a number of exploration techniques to explore the Property since the late 1960s (Table 5-1). Geophysical techniques and surveys include airborne time domain surveys EM, magnetics and radiometrics, while ground surveys have included VLF EM, horizontal loop (“HLEM”), larger loop EM in a number of configurations, DC Resistivity and gravity data collection. Soil and radon sampling have also been performed, including track etch cups and radon in-water surveys.

 

19

 

Due to its proximity to producing mines and the identification of several deposits, the Property has been subject to numerous exploration programs since discovery of the Rabbit Lake Deposit in 1968. A review of the details of all the programs conducted on the area of the Property would be too exhaustive to be relevant to this TRS so, instead, the methods employed, significant discoveries made and summary details of the different types of programs that were completed are outlined below. The reader is referred to compilation reports by Andrade (1983a, 1983b) and Studer (1984) for further details on work completed up until 1983 on the Property and references to earlier work. Reports by Studer and Gudjurgis (1985), Studer (1986, 1987 and 1989), Studer and Nimeck (1989), Ogryzlo (1984, 1985, 1987a, 1987b, 1988), Forand and Nimeck (1992), Forand, Nimeck and Wasyluik (1994), Forand (1995 and 1999), Powell (1996) and Foster et al (1997) document work programs conducted between 1983 and 1998 and provide references to further work also conducted during those years. No exploration was carried out on the Property between 1999 and 2002.

 

The Horseshoe-Raven deposit was discovered in two stages, four years after the discovery of the Rabbit Lake Mine. In the fall of 1972, drill testing of a ground conductor became the discovery hole for the Raven Deposit. Subsequent drilling through 1973 and 1974 outlined the deposit. During the final year of the Raven Deposit drilling, the discovery hole of the Horseshoe Deposit intersected ore grade mineralization to the east of the Raven Deposit while testing a geophysical anomaly similar to the Raven Deposit signature. Subsequent diamond drilling during the period of 1974 to mid-1975 succeeded in outlining the Horseshoe Deposit (Studer, 1984).

 

Table 51: Historical Drilling by Other Companies on the Horseshoe-Raven Property

 

 

Type

 

Meters*

 

Year

Total

DDH

RC

Sonic

Total

DDH

RC

Sonic

Company

1972

15

15

   

2,701

2,701

   

Gulf

1973

26

26

   

6,593

6,593

   

Gulf

1974

141

141

   

32,331

32,331

   

Gulf

1975

84

84

   

21,763

21,763

   

Gulf

1976

156

32

124

 

9,402

7,861

1,540

 

Gulf

1977

11

11

   

2,159

2,159

   

Gulf

1978

39

3

36

 

1,233

655

578

 

Gulf

1984

1

1

   

82

82

   

Eldorado

1985

7

7

   

542

542

   

Eldorado

Total

480

320

160

 

76,805

74,687

2,118

   

 

 

5.3

Early Uranium Exploration (1968 to 2002)

 

The location and methods of exploration applied on the Property have varied with the differing geological target models, exploration priorities and the new technologies developed since discovery of the Rabbit Lake Deposit in 1968. Initial exploration programs in the area were based on the basement‐hosted Rabbit Lake Deposit model, which involved the search for the coincidence of gravity and magnetic lows associated with the large, intense alteration zone and associated faulting at that deposit. These programs employed a multiple parameter search methodology (Whitford, 1971), employing: (i) initial airborne gamma ray spectrometric, EM, gravity and magnetic surveys conducted in the late 1960s; (ii) ground geological and geophysical checks of the airborne radiometric anomalies; (iii) surface prospecting, scintillometer and geochemical reconnaissance surveys, including radon in-water surveys; and (iv) follow‐up overburden and diamond drilling. Most of the Hidden Bay property was subject to these methods during the initial years of exploration, particularly in areas of exposed basement rocks to the southeast, where the potential for basement‐hosted Rabbit Lake type deposits was deemed greatest. These methods were used extensively by Gulf up until 1976, when discoveries elsewhere in the Athabasca Basin, particularly the Key Lake Deposit, where the spatial association between a string of deposits developed at the intersection between the sub‐Athabasca unconformity with graphitic gneiss‐hosted faults were recognized. The recognition of the probable genetic role of graphitic gneiss and associated faults in deposit localization shifted the emphasis to the use of ground-based EM surveys, such as HLEM, as the principal first pass geophysical survey in target areas. These EM surveys were used to detect conductive graphitic lithologies beneath overburden and the Athabasca sandstone. EM surveys still form the principal geophysical exploration tool, although the technologies currently used differ from the initial programs (e.g., fixed and moving loop) and have led to the targeting of many programs that have ultimately resulted in many new discoveries in the region during follow‐up drilling of anomalies.

 

20

 

Principal target areas for diamond drilling in the areas on and surrounding the Property targeted systematic drilling of major faults with known associated mineralization, including the Rabbit Lake, Telephone, Seal and Wolf Lake Faults, and concentrated areas of drilling in geologically and geochemically prospective areas (e.g., Vixen Lake‐Dragon Lake). Most diamond drilling campaigns have been initially targeted based on ground geophysical surveys and follow‐up to reverse circulation drilling anomalies. Reverse circulation drilling in 646 drillholes (9,062 m total) was conducted in several programs completed principally between 1976 and 1982 as a grid‐based testing of overburden and sandstone covering portions of central and northern parts of the Property. These programs aided in the definition of the location and depth of the Athabasca unconformity and allowed evaluation of geological and geochemical environments and located uranium anomalies in overburden and bedrock (Rhys, 2002).

 

5.4

Historical Mineral Resource Estimates

 

No mineral resource estimates exist for the Property that comply with S-K 1300. UEX completed previous mineral resources estimates for the Property under the Canadian National Instrument 43-101 in 2009, 2011 and 2021.

 

5.5

Historical Production

 

There has been no production completed on this Property to date.

 

 

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21

 

6.

GEOLOGICAL SETTING AND MINERALIZATION

 

6.1

Regional Geology

 

The Property is just east of the eastern margin of the Athabasca Basin. It is underlain by Paleoproterozoic metasedimentary gneiss and Archean granitic gneiss basement rocks of the Hearne Province (Figure 6‑1).

 

The basement rocks of the Property (Figure 6‑2) are within the Cree Lake zone of the Early Proterozoic Trans-Hudson orogenic belt. The Cree Lake zone is composed of Archean gneiss and overlying Early Proterozoic or Archean supracrustal rocks (Bickford et al., 1994), both of which are affected by amphibolite to locally, granulite facies metamorphism. The Cree Lake zone is further subdivided into three transitional lithotectonic domains, of which the Property lies within the Wollaston Domain. The central belt, the Mudjatik domain, is composed primarily of Archean granitic gneiss, often as domal bodies, which are separated by discontinuous zones of migmatitic, pelitic gneiss and mafic granulite (Lewry and Sibbald, 1980; Sibbald, 1983). The Wollaston Domain to the east is composed of a basal sequence of biotite-quartz-feldspar +/- graphite pelitic gneiss, which overlies domes of Archean granitoid gneiss in the Mudjatik domain and which is contiguous with pelitic gneiss sequences in the Mudjatik Domain (Wallis, 1971). The basal pelitic gneiss is structurally overlain successively by:

 

i.

massive to weakly foliated meta-arkose, and

 

ii.

quartzite with interlayered amphibolite and calcareous meta-arkose (Wallis, 1971; Sibbald, 1983).

 

The age of the Wollaston Group is poorly constrained. Zircons from various paragneiss units that yield ages between 2550-2700 Ma establish a maximum age of the group, but these dates may represent detrital zircons derived from an older source (Annesley et al., 1996). A minimum age is given by 1840-1850 Ma granitic sills and bodies that intrude the sequence (Figure 6‑1, Figure 6‑2, Figure 6‑3, Figure 6‑4, & Figure 6‑5).

 

 

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image05.jpg

 

Figure 61: Regional Geology Setting

 

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image06.jpg

 

Figure 62: Horseshoe-Raven Local Area Stratigraphy

 

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At least two major phases of syn-metamorphic deformation affect rocks in the Wollaston and Mudjatik domains. Early, layer-parallel gneissosity (S1) is widespread and is the first recognizable structural fabric in the area (Wallis, 1971). However, no associated major folds have been identified with this event (Sibbald, 1983). This early fabric is overprinted and transposed by northeast-trending penetrative foliation (S2) that is axial planar to upright, tight folds having variably northeast and southwest plunging axes (Wallis, 1971).

 

image07.jpg

 

Figure 63: Geological Sketch Map of the Athabasca Basin. The eastern Athabasca Basin is defined as that part of the basin east of the Snowbird tectonic zone and is shown in reference to the major basement domains and stratigraphy of the Athabasca Basin, after Card et al. 2007, Portella and Annesley (2000), Ramaekers et al. (2007) and Thomas et al. (2002).

 

The Mudjatik and Wollaston domains are affected by amphibolite to locally granulite facies metamorphism (M1) that accompanied D1 deformation, defining the main thermotectonic pulse of the Hudsonian orogeny. U-Pb zircon and monazite age dating indicates Hudsonian peak metamorphism occurred between approximately 1830-1800 Ma in the Wollaston and Mudjatik domains (Annesley et al., 1996). It was accompanied by the intrusion of grey, commonly porphyritic granite sills and by subsequent anatectic K-feldspar-quartz-biotite pegmatite sills (Annesley et al., 1996). A second metamorphic pulse may have accompanied D2 deformation between 1775-1795 Ma.

 

To the west of the Property, the folded Archean to Early Proterozoic metamorphic sequence is unconformably overlain by flat-lying to gently inclined quartz-rich sandstone of the Athabasca Group. U-Pb dates of authigenic apatite cement and Rb-Sr dating of the paleoweathered zone at the base of the sandstone suggest a depositional age of between 1600-1700 Ma (Cumming et al., 1987).

 

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image08.jpg

 

Figure 64: A) Idealized cross-section through the eastern Cree Lake zone, suggesting the possible structural relationship between Archean basement and Paleoproterozoic metasedimentary cover during the early stages of Hudsonian deformation (after Tran, 2001); B) Geological cross-section through the Athabasca Basin (after Ramaekers, 1990; Ramaekers et al. 2007). For location see Figure 6-3.

 

Two dominant, post-metamorphic fault orientations occur in the region (Wallis, 1971). Concordant northeast-trending, semi-brittle and brittle reverse faults occur throughout the region. North-south trending, sinistral strike slip faults which represent western splays and parallel structures of the major Tabbernor fault system are also common.

 

6.2

Geology of the Horseshoe-Raven Property: Distribution of Lithologies

 

Lithologies and foliation of the Wollaston Domain rocks of the Property trend northeast with predominantly moderate to steep southeast dips, although northwest dips occur as the result of the broad synform that is the host to uranium mineralization at the Property.

 

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6.3

Pre-Athabasca Lithologies on the Hidden Bay Property: Wollaston Group

 

A consistent sequence of gneiss and schist is developed in the Wollaston Group outward from granitic domes in the region. Primary sedimentary structures have generally been obliterated by regional metamorphism, but rare compositional grading of graphite and biotite-garnet rich lamina that may represent relict graded bedding face away from the Collins Bay Dome and suggest that the sequence is upright (Rhys, 2002).

 

6.3.1

Lower Pelitic Gneiss

 

Lowermost lithologies of the Wollaston Group in the Property area comprise metapelitic gneiss and interlayered meta-arkose that surround, and directly overlie, the Collins Bay and McClean Lake domes (Sibbald, 1983). It is composed of biotite-quartz-feldspar +/- garnet +/- cordierite +/- graphite +/- sillimanite metapelitic gneiss and schist, with subordinate bands of graphite schist and calc-silicate units. Interlayers of fine- to medium-grained, weakly foliated biotite meta-arkose are often abundant. The lower pelitic sequence is variable in thickness; its apparent thickness in the area of the Property is greater than one km, and in some areas greater than three km, although structural repetition due to internal folding may significantly accentuate that thickness. Although it may occur throughout the sequence, graphite gneiss is particularly abundant in lower parts of the unit, particularly in its basal 50 m, where gneiss containing >5% disseminated fine-grained, and foliated graphite is common. Discontinuous calcsilicate and carbonate units occur throughout the pelitic gneiss unit.

 

6.3.2

Meta-Arkose Unit

 

Massive to weakly foliated biotite-quartz-feldspar meta-arkose and calcareous meta-arkose overlies and interfingers with the lower pelitic unit of the Wollaston Group (Sibbald, 1983). Thickness of the unit varies along strike; it has an apparent thickness of one to four km in the area of the Property. The meta-arkose unit forms a northeast-trending aeromagnetic high due to the presence of disseminated magnetite and pyrrhotite.

 

Meta-arkose consists of granoblastic intergrowths of medium- to fine-grained plagioclase, microcline, quartz, biotite and hornblende. Diopside, hornblende and calcite/dolomite are abundant in compositional layers locally, and disseminated pyrite, magnetite, pyrrhotite and locally chalcopyrite are common accessory minerals. Alignment of biotite defines foliation. The unit is commonly homogenous and lacks well-developed gneissosity, although gross compositional layering is common.

 

Meta-arkose is frequently replaced by pervasive pale green to pale pink or white albitepyroxene-amphibole-quartz alteration, previously termed “plagioclasite” (Sibbald, 1983; Appleyard, 1984). Large areas of stratabound to locally discordant, massive albite-rich lithologies occur in meta-arkose north of the Rabbit Lake fault near the Rabbit Lake pit and to the northeast and southwest for up to several kilometers. This alteration style is often manifested in biotite meta-arkose as a series of coalescing, to pervasive irregular, anastomosing replacement veinlets and stringers of albite that are cored by diopside and hornblende (Appleyard, 1984). The veinlets coalesce to form massive domains of polygonal, granoblastic medium-grained albite with coarse disseminated grains and local stringers of diopside. The plagioclasite may have formed due to metasomatic interaction of meta-arkose units with adjacent carbonate and possible evaporite units to the south during peak metamorphism (Appleyard, 1984). Plagioclasite units show a spatial relationship to some uranium deposits (e.g. Rabbit Lake), but this may be an indirect relationship since the mineralization may instead be preferentially localized in calc-silicate and carbonate units to which the plagioclasite is spatially related.

 

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6.3.3

Carbonate and Calc-Silicate Units at the top of the Meta-Arkose Sequence

 

At the top of the meta-arkose sequence to the north of the Property at the Rabbit Lake deposit, and for several kilometers east and west along strike, impure dolomitic marble forms a continuous 20 to 180 m thick unit near the top of the meta-arkose sequence. The marble is pale grey to white or pink in color, and commonly contains disseminated, or compositional layers of pyroxene, amphibole, serpentine, scapolite and graphite. Above the marble unit, several hundred meters of interlayered meta-arkose and calc-silicate cap the meta-arkose unit in the Rabbit Lake pit area and form a transition from the meta-arkose sequence to the overlying Hidden Bay assemblage. Dolomitic marble with associated calc-silicates is also present in the Property area in the same stratigraphic position as at Rabbit Lake (Wallis, 1971).

 

6.3.4

Hidden Bay Assemblage

 

The Hidden Bay Assemblage (Wallis, 1971; quartzite-amphibolite unit of Sibbald, 1983) is the host rocks for the Horseshoe and Raven Deposits and forms the uppermost portions of the Wollaston Group. The unit is characterized by sillimanite quartzite, calcareous meta-arkose/quartzite and amphibolite, with interlayered pelitic gneiss near its base. It occurs south of the Rabbit Lake deposit and is probably >1.5 km in true thickness (Sibbald, 1983). The Hidden Bay Assemblage in the study area is composed of, from bottom to top (Sibbald, 1983; Wallis, 1971): (i) a basal member of interlayered meta-arkose and pyroxene-amphibole-biotite +/- dolomite +/- scapolite calc-silicate, several hundred meters thick, the “hanging wall gneiss” of the Rabbit Lake pit (Hoeve and Sibbald, 1978), (ii) biotite-quartz-feldspar gneiss, in part graphitic, with interleaved biotite-sillimanite gneiss that is approximately 500 m thick, and (iii) approximately one km or more of sillimanite-biotite-feldspar bearing massive, fine- to medium-grained quartzite interlayered with amphibolite that is up to several hundred meters thick near the base of the quartzite unit and with pale green, laminated, diopside-bearing calcareous meta-arkose higher in the sequence (Figure 6‑5).

 

6.3.5

Granitic Rocks and Other Igneous Lithologies in the Region

 

Igneous rocks in the region include possible Archean domes and several generations of granite and pegmatite sills, dykes and stocks that intrude the Wollaston Group.

 

6.3.6

The Collins Bay and McClean Lake Domes: Possible Archean Basement

 

North of the Property, the McClean Lake and Collins Bay domes mark the transition from the Wollaston to the Mudjatik domains. They are composed of massive, grey biotite granite to tonalite that is medium- to fine-grained and generally equigranular. K-feldspar and/or irregularly shaped to round, ragged quartz phenocrysts are locally present. 10-15% fine-grained biotite flakes and approximately 20-25% quartz are ubiquitous. The intrusions may be foliated within 10 to 50 m of their contacts, with foliation defined by the alignment of biotite grains. Garnet is a local constituent, and sillimanite-rich patches and blebs are common near contacts. Regional aeromagnetic maps indicate spatial variations in the magnetic signature of the Collins Bay Dome that suggest the presence of more than one intrusive phase. The core of the dome forms a broad positive magnetic anomaly while parts of its margins are magnetically indistinguishable from the surrounding gneiss sequence. Annesley et al. (1995, 1996) report Archean U-Pb zircon ages for tonalitic gneiss on the margins of the McClean Lake dome.

 

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6.3.7

Granite Sills and Dykes in the Wollaston Group

 

Sills of equigranular, medium-grained grey to white biotite granite occur throughout the Wollaston Group. They commonly form leucosomes and sills less than 10 m thick in pelitic gneiss, but they may obtain a thickness of more than 100 m. K-feldspar and pink to red garnet locally occur as phenocrysts. Samples collected from several granite sills in the area have yielded U-Pb zircon dates ranging between 1804-1815 Ma (T. Krogh in Annesley et al., 1995).

 

6.3.8

Granitic Gneiss in Quartzite of Hidden Bay Assemblage

 

South of the Horseshoe and Raven deposits, several sill-like bodies of biotite-bearing granitic or quartz monzonite gneiss that are up to several hundred meters thick occur in quartzite. These bodies have been dated at 2620 +/- 9 Ma by U-Pb zircon methods (Annesley and Madore, 1991). Their Archean age has prompted Annesley and Madore (1991) and Hubregtse and Duncan (1991) to interpret these lithologies as an Archean granite that forms the basement to the Wollaston Group. However, these bodies occur in the Hidden Bay Assemblage, the highest inferred stratigraphic level of the Wollaston Group, and would thus require both reinterpretation and revision of the entire Wollaston Group stratigraphy and the presence of complex tectonic interleaving. Alternatively, (i) the granite gneiss may represent a recrystallized metasedimentary unit (Wallis, 1971) and thus the age may be from detrital zircons, (ii) the zircons may represent xenocrysts in a younger intrusion, or (iii) the granite bodies may intrude the Wollaston Group, and if so, provide a minimum Archean age for the group.

 

 

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image09.jpg

 

Figure 65: Horseshoe-Raven Property Local Geology

 

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6.3.9

Pegmatite Sills and Dykes

 

Coarse-grained K-feldspar-quartz-biotite +/- tourmaline (schorl) +/- garnet pegmatite sills and dykes are common throughout the Wollaston group, especially in the lower portions of the sequence. Sills are typically 0.3 m to 20 m wide. The largest pegmatite body recognized to date in the area is 200 m thick and several hundred meters long; it occurs in lowermost parts of the Wollaston Group at the Eagle Point mine (Rhys, 1999), where it is host to much of the mineralization. At least four generations of pegmatite occur in the region, ranging from pre- and syn-metamorphic, syn-D2 sills, to less abundant late dykes. Pegmatite bodies in the area are locally radioactive and often contain minor quantities of U and Th-bearing minerals.

 

6.3.10

Post-Metamorphic Sediments: Athabasca Sandstone

 

West and north of the Property is the quartz sandstone and conglomerate of the Athabasca Group that unconformably overlies the metamorphosed basement rocks and, except where disrupted by faulting effects, dips gently to the west as the basin thickens. The eastern boundary of the basin is erosional but is in part influenced by post-Athabasca faulting. Several outliers occur in the Hidden Bay property area (Ramaekers, 1983). U-Pb dates of 1650-1700 Ma obtained from apatite cement in the Athabasca Group by Cumming and Krstic (1992) provide a minimum age for the inception of sedimentation in the Athabasca Basin.

 

The Athabasca Group is composed mainly of orthoquartzite with a clay-rich matrix and a variable hematite content. Beds of quartz clast conglomerate occur frequently. Four marine transgressive sequences, overlying one thick fluvial regressive wedge (Manitou Falls Formation) are recognized in the Athabasca Group (Ramaekers, 1983). Diagenetic effects include quartz overgrowths on and minor pressure solution of the detrital quartz grains (Ramaekers ,1976). Some clay may be detrital, but clay minerals have replaced framework grains of biotite and feldspar. Diagenetic interstitial clays are usually composed of a mixture of dickite, illite and kaolinite (Hoeve and Quirt, 1985). Purple hematite impregnates the matrix through much of the sequence, often forming bands, and red and purple leisegang rings.

 

6.3.11

Paleoweathering/Saprolite at the Top of the Basement Rocks

 

Widespread argillic alteration occurs in basement metamorphic rocks beneath the Athabasca sandstone that lies to the east and north of the Property. Thickness is variable, but typically ranges from 10 m to 40 m. This is limited at the Property, as the paleo-unconformity has been eroded and only the lower parts of the paleoweathering profile can be intermittently observed. The alteration is similar in geochemistry, mineralogy and zoning to that observed today in lateritic profiles, and consequently, has been commonly interpreted as a saprolitic (paleoweathering) profile related to pre-Athabasca erosion of the gneiss sequence (e.g. Hoeve and Sibbald, 1978). Alternatively, it could be related to the reaction of oxidized diagenetic fluids in the Athabasca sandstone with underlying basement rocks, or a superposition of both processes (D. Rhys et al., 2008). This sub-Athabasca alteration zone is referred to as “paleoweathering alteration” here, even though a post-Athabasca timing is possible. Argillic alteration associated with uranium mineralization is superimposed on this alteration.

 

The “paleoweathering” alteration often displays a vertical zonation in mineralogy and texture. At the top of the alteration profile, in basement rocks immediately beneath the unconformity, a white zone of intense kaolinite alteration is commonly developed within zero to five metres below the unconformity, followed downward by a hematitic, oxidized red zone, containing kaolinite +/- illite, which in turn gradationally overlies a reduced green zone containing illite and Fe-Mg trichlorite, which then grades into fresh rock at depth (Quirt, 1990). Graphite is often completely to partially depleted in the oxidized, generally kaolinite-bearing red zone, and metamorphic minerals are clay altered with chlorite, illite and kaolinite.

 

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6.4

Structural Setting of the Horseshoe-Raven Property

 

6.4.1

Penetrative Deformation and Folding

 

Rocks on the Property are affected by at least two significant phases of Hudsonian penetrative deformation (D1 and D2) that are manifested as widespread penetrative tectonic fabrics. No strain asymmetry (i.e. rotational shear strain) can be determined from drill core or outcrop observations of D1 or D2 planar and linear fabrics that would indicate the presence of syn-Hudsonian shear zones in the Property area. Younger features include at one or more generations of phase of open folds (D3, D4?) and semi-brittle to brittle faults.

 

6.4.2

D1 Deformation

 

The earliest recognizable deformation is manifested by ubiquitous gneissic compositional layering (S1) and a parallel shape fabric defined by alignment of peak metamorphic minerals (Wallis, 1971; Sibbald, 1983). S1 foliation strikes northeast with moderate southeast dips, and is parallel to, and in part defined by lithologies including compositional layers and granitic leucosomes. S1 is defined by unstrained peak metamorphic minerals but is also overgrown by porphyroblasts of garnet and cordierite, which contain inclusion trails aligned parallel to S1 (Wallis, 1971; Rhys, 1998). These relationships suggest that M1 peak metamorphism was synchronous with, but outlasted, D1 deformation and the formation of S1 foliation (Wallis, 1971). No major folds associated with the S1 foliation were positively identified in the study area. However, tight to isoclinal minor F1 folds are common in the drill core, suggesting the presence of larger F1 folds to which these are parasitic.

 

6.4.3

D2 Deformation

 

D2 deformation is manifested by megascopic and minor folds (F2 folds), which have significantly influenced the map patterns of lithologies in the area, and by the development of S2 foliation, which is axial planar to F2 folds of S1/gneissosity and lithologies. S2 is inhomogenously developed and varies from an intense foliation that overprints and transposes S1 to a spaced cleavage that is only developed in the hinge zones of F2 folds. Where it is intense, S2 transposes S1 and consequently the two foliations are locally coplanar and indistinguishable. In some units, S2 also forms a spaced crenulation cleavage that is defined by re-oriented domains of S1 and by the alignment of new unstrained metamorphic minerals. S2 commonly wraps around garnet, cordierite, amphibole and pyroxene porphyroblasts and biotite and sillimanite porphyroblasts are commonly crenulated by minor F2 folds. These relationships indicate that D2 occurred after the earliest recognizable amphibolite grade (M1) metamorphic peak that accompanied the formation of S1. The presence of biotite porphyroblasts aligned parallel to S2 locally occurring in pressure shadows adjacent to garnet, cordierite, pyroxene and pyrite porphyroblasts and in D2 fold hinges, overgrowing earlier metamorphic assemblages and S1, suggests that a pulse of probable amphibolite-grade metamorphism (M2) accompanied D2. A mineral lineation (L2) may be developed at the intersection of S1 and S2, defined by the alignment of long axes of amphiboles, biotite, elliptical cordierite porphyroblasts and sillimanite bundles. It is often parallel to F2 fold axes (Rhys, 2002).

 

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D2 fabrics and folds are developed inhomogeneously in both intensity and orientation. Near Wollaston Lake, minor F2 folds have subvertical to steep east-dipping dipping axial planes and fold axes generally plunge to the northeast. To the southwest, in the vicinity of the Horseshoe-Raven deposit, F2 axial planes and local S2 axial planar cleavage are generally shallower, and generally dip moderately to the east. This latter area is dominated by a series of inclined to overturned megascopic folds with southeasterly dipping axial planes that have wavelengths of 0.3-2 km and shallow northeast plunging fold axes that form the major map patterns in the Hidden Bay Assemblage. At a regional scale, D2 folds are noncylindrical, exhibit domal outlines and fold axes that have variable northeast and southwest plunges. Elliptical D2 folds are in part localized around granite domes, but variable fold axis plunges also occur in other areas. The parallelism of L2 elongation lineation with D2 fold axes suggests that significant stretching was accomplished parallel to the fold axes during folding, suggesting that the D2 folds may represent sheath-type folds (Rhys, 2002).

 

6.5

Mineralization

 

Uranium mineralization in the Athabasca Basin is generally of Helikian age. Geochronological studies have determined that most deposits were formed in a restricted time interval between 1330-1380 Ma (Cumming and Krstic, 1992), and as early as 1590 Ma at the Millennium Deposit and 1521 Ma at the McArthur River Mine with ages of remobilization near 1350 Ma. The deposits generally occur at the unconformity between the lowermost Athabasca Group and the underlying crystalline basement rocks. They are commonly localized to the intersection of faults and the unconformity, or at a paleotopographic basement ridge.

 

Two major types of unconformity-related uranium orebody types have been identified in the Athabasca Basin. The first is polymetallic mineralization (uranium + Ni, Co, Cu, Mo, Zn, Pb, and As) mainly within the Athabasca Group sandstones, at the unconformity and locally upwards along steeply dipping faults (“perched mineralization”). Deposits of this type are associated with a paleotopographic ridge of basement rocks, often controlled by strike-slip faults (Cigar Lake Mine, Midwest Deposit). The second major type is a monomineralic mineralization (uranium oxides) structurally controlled by reverse faults affecting sandstone and basement (McArthur River Mine, Sue C Deposits).

 

Deposits within the Athabasca Basin are typically surrounded by alteration haloes that in the sandstones is dominated by silicification, hematization, precipitation of drusy quartz and argillization (illitization and chloritization) with massive quartz dissolution and intense fracturing; and in the basement, hydrothermal alteration consisting of illitization, chloritization and the development of dravite, which is superimposed upon and commonly obliterates the previous retrograde and regolithic alterations.

 

Post-Athabasca tectonic events have resulted in structural disruptions in the Athabasca Group and the Wollaston Group stratigraphy. These events are accompanied by hydrothermal alteration and associated uranium mineralization in both the Athabasca sandstone and basement. Primary targets for uranium mineralization are faulted graphitic zones in the metasedimentary basement that have been subjected to post-Athabasca reactivation, as well as in structurally disrupted sandstone and along the unconformity. Structural reactivation allowed for channeling of significant volumes of oxidized uraniferous fluids through a reduced environment, especially along, and proximal to packages of graphitic pelitic rocks. This allowed for the deposition of uranium at an oxidization-reduction front. Within the Property area, these post-Athabasca events have a north-east, north and north-west trend (Rhys, 2002).

 

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6.6

Local Geology of the Horseshoe and Raven Deposits

 

6.6.1

Host Lithologies to the Horseshoe and Raven Deposits

 

The Horseshoe and Raven Deposits are hosted by the Hidden Bay Assemblage, which occurs within a complex northeast trending D2 synclinorium that sits structurally above and south of the underlying meta-arkose unit of the Daly River subgroup. The synclinorium is cored by quartzite that is succeeded outward concentrically from the core of the folds by other components of the Hidden Bay Assemblage, which include a mixed sequence of calc-arkose, additional quartzite, locally graphitic sillimanite-bearing pelitic schist and amphibolite (Figure 6‑5). While no Athabasca Sandstone is present above the Horseshoe and Raven Deposits since it has been eroded from the local area, sandstone outliers that occur to the southeast of the deposits and the local presence of paleoweathering in some drillholes south of the deposit area suggest that the sub-Athabasca unconformity was present just above the current surface.

 

6.6.2

Structural Setting - Metamorphic Structural Architecture

 

Lithologies in the Horseshoe and Raven areas outline several significant, upright open D2 (F2) folds in the local area (Figure 6‑5). These folds have steep to moderate, southeasterly dipping axial planes and horizontal to shallow northeast plunging fold axes. A D2 timing is indicated since the folds affect both primary lithologic layering as well as lithology parallel S1 penetrative foliation. A spaced, vertical to southeast dipping S2 foliation is axial planar to the folds and locally crenulates older S1 foliation. No older, D1 folds were identified and, if they are present, they are similarly to be isoclinal and difficult to recognize but could have caused lateral and vertical thickness variations in host lithologies.

 

Principal folds in the immediate deposit areas include the Horseshoe anticline and adjacent Raven syncline. The Horseshoe anticline is cored by amphibolites south of the Raven Deposit and plunges to the northeast, where arkosic quartzite occurs in the hinge area in the Horseshoe Deposit (Figure 6‑5). Similarly, to other D2 folds in the area, this fold is non-cylindrical and varies in plunge, shallowing to the northeast, where it plunges very shallowly to sub horizontally to the northeast in the Horseshoe Deposit area. The adjacent Raven syncline, with its axial trace 250 m to 550 m northwest of the Horseshoe anticline, has a nearly horizontal fold axis and is cored along its length by arkosic quartzite forming the top of the local metamorphic stratigraphy. Uranium mineralization in both the Horseshoe and Raven Deposits is elongate parallel to the trend and plunge of these folds and at Raven preferentially exploits the core of the syncline, while at Horseshoe, mineralization extends between these two folds obliquely crossing the folded sequence.

 

Few significant offsets of lithologies occur in the Horseshoe and Raven Deposit areas and outside of clay alteration zones associated with uranium mineralization, lithologies are competent and generally lack any significant faulting.

 

6.6.3

Mineralization

 

Based upon the recommendations of the authors of the 2009 Report, the Horseshoe and Raven deposits were wireframed using a cut-off of 0.02% U3O8. The new wireframe shells encompass all of the subzones that were originally utilized for the 2009 Report for both the Horseshoe and Raven deposits. Using a lower cut off for the wireframe has resulted in the subzones being contained within the newly modeled ore shell. The mineralization at the Horseshoe Deposit has been defined over a strike length of approximately 800 m and occurs at depths between 100 m to 450 m below surface. Mineralization occurs in several stacked and shallow plunging shoots that generally follow the fold axis of a gently folded arkose-quartzite package. Uranium mineralization is often best developed along the zones of dilation developed along bedding.

 

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The Raven Deposit has been defined since 2005, by drilling for and by UEX, over a strike length of approximately 1000 m. Mineralization is developed mainly at consistent depths of between 100 m and 300 m below surface. The uranium mineralization is an elongate and east-northeast trending zone. Minor zones may extend upward to within a few tens of metres of surface, but these are not consistently present along the length of the deposit as it is currently defined by drilling. Mineralization is localized along the trace of the Raven syncline, particularly along the southeastern limb of the fold, and is developed extending downward from the base of the folded calc-arkose unit into the underlying quartzite and arkosic quartzite with no significant plunge.

 

Similar to Horseshoe, mineralization at Raven occurs in hematitic altered areas, which surround a steep to moderate southeast dipping zone of clay alteration, which obliquely crosses the southeastern, dominantly shallow northwest dipping limb of the Raven syncline. The structural position of the mineralization is consequently the same as Horseshoe with respect to the folded metamorphic stratigraphy. The clay alteration zone also shallows in dip to the east through the deposit, although it does not attain the shallow dips of the eastern Horseshoe clay alteration zone. It may also be controlled by pre- or syn-alteration/mineralization faulting, as evidenced by clay gouge seams up dip from the projection of the principal clay zone. Potential for offset lithologies across the clay zone at Raven is not as pronounced as it is at Horseshoe, with lithologic contacts often showing little or no significant deflection across the trace of the clay zone.

 

Uranium mineralization in the Horseshoe and Raven Deposits occurs along an east-northeast trending zone of illite-Mg-chlorite clay alteration that is developed over at least 2.5 km strike length extending along the southeast flank of the Raven syncline. Mineralization in each deposit surrounds, or is developed along, the generally southeast dipping clay alteration zone in multiple, generally shallow dipping lenses of disseminated and vein-like pitchblende-uranophane-boltwoodite mineralization that is associated with red-brown hematite alteration.

 

The two deposits are separated by approximately 0.5 km, laterally between which clay alteration is continuous and often intense, but in which widely-spaced historical holes have intersected only anomalous radioactivity.

 

6.7

Athabasca Uranium Deposits

 

The Property is within the eastern Athabasca uranium district, one of the most prolific uranium producing districts in the world. UEX’s Raven and Horseshoe Deposits are situated on the Property that is adjacent to the Hidden Bay property. There are a number of deposits in the area surrounding the Property. UEX’s West Bear property to the south hosts both the West Bear Uranium Deposit and the West Bear Cobalt-Nickel Deposit. There are five past or currently producing mines to the north of the Property on the adjacent Rabbit Lake property (Rabbit Lake, A-zone, B-zone, D-zone, and Eagle Point). North of the adjacent Hidden Bay property are the Sue and JEB deposits on the McClean Lake property (Jefferson et al., 2007). Production is on hiatus at the Rabbit Lake property, and has ceased at the McClean Lake operation, with the mill currently processing ore from the Cigar Lake Operation.

 

35

 

These deposits named above collectively comprise different varieties of the unconformity associated uranium deposit type described by Jefferson et al. (2007), Ruzicka (1996) and previous workers. All are spatially related to the sub-Athabasca unconformity in the region, and are generally interpreted to result from interaction of oxidized diagenetic-hydrothermal fluids with either reduced basement rocks as is the case at the Property, and/or with reduced hydrothermal fluids along faults extending upward toward the unconformity in underlying basement rocks beneath the unconformity (e.g. Hoeve and Quirt, 1985). The common occurrence of uranium mineralization in the area, and associated alteration that overprints the regional signature of the Athabasca sandstone, indicates a post-Athabasca (<1,700 Ma) timing for uranium mineralization in the region. U-Pb age dates obtained from uraninite mineralization in deposits throughout the Athabasca Basin support a principal phase of mineralization between 1,600-1,500 Ma with a potential second event between 1,460-1,350 Ma and potential later periods of reworking indicated by younger ages (Fayek et al., 2002; Alexandre et al., 2003; Cumming and Krstic, 1992).

 

Uranium deposits in the area form three different, although commonly spatially related, types of unconformity type uranium deposits (Figure 6‑6).

 

6.7.1

Sandstone-Hosted Deposits

 

Sandstone-hosted deposits developed at, or just above, the Athabasca unconformity in Athabasca sandstone along the trace of north-east trending faults. These deposits occur in sandstone in the footwall wedge to graphite-bearing graphitic gneiss overthrust on Athabasca sandstone (e.g. Collins Bay A, B and D-zones), or in gradational drops/humps in the unconformity above graphite-rich lithologies and faults (e.g. Sue A/B West Bear, McClean Lake). They are generally associated with non-calcareous graphitic and biotite gneiss. Mineralization occurs in pods and disseminations in intense hematite-clay-chlorite alteration, locally overprinting spatially associated breccias and zones of intense clay alteration that sit directly above mineralization in sandstone. Common structural sites include bends and steps in fault systems, or five to 20 m humps in the unconformity that may reflect the interaction of graphitic shear zones with faults of different orientations. These deposits are sometimes called complex deposits due to the poly-minerallic nature of the ore (i.e. U +/- Ni, Co, As, Pb) and are characterized by assemblages of Ni and Ni-Co arsenides and sulpharsenides that accompany uranium mineralization.

 

6.7.2

Basement-Hosted Deposits

 

Basement-hosted deposits within or surrounding fault zones in predominantly non-calcareous gneiss. These deposits are exemplified by Eagle Point and Sue C/CQ, which are composed of veins, disseminations and pods that link or replace faults in or near graphitic bearing gneiss. Veins frequently occur in extensional fractures that may link individual faults (Sue CQ, Telephone zone), or occur in en-echelon steps in faults (Eagle Point). Unlike unconformity deposits described above, these deposits typically lack arsenide and sulpharsenide minerals in mineralized zones. Mineralization is composed of discrete pitchblende veins, planar replacements of fine-grained nodular pitchblende + clays, or undulating pitchblende/uraninite-bearing redox fronts surrounding clay veins and faults. A variation on this deposit type occurs at Horseshoe-Raven, where uranium mineralization occurs in hematitic redox fronts and veins surrounding large, semi-tabular clay alteration zones that are cored by probable faults. Horseshoe and Raven differ, however, from other basement deposits in the region in that they lack spatially associated graphitic gneiss units or carbonaceous fault zones, and consequently the average grade of the deposits is lower than its peers in the Athabasca Basin, but still comparable to average uranium deposit grades worldwide.

 

36

 

Basement-hosted deposits associated with hydrothermal breccias in calcareous gneiss adjacent to northeast-trending faults. The only example of an orebody of this type in the area is the Rabbit Lake deposit and the largest basement-hosted unconformity deposits in the Alligator River district of northern Australia are closely comparable. The Rabbit Lake deposit occurs perched above the Rabbit Lake Fault at its intersection with the North-South Fault, which is part of the Dragon Lake Tabbernor-type fault system. Mineralization occurs on the margins of a large hydrothermal, chlorite-matrix breccia body that affects dolomitic marble and adjacent lithologies, and that may have formed during dissolution collapse of the carbonate, forming a highly permeable zone. High- grade mineralization is superimposed on the northeastern margins of the breccia and associated silicification/dravitization along the trace of the North-South Fault.

 

 

[The remainder of this page is intentionally left blank.]

 

37

 

 

image10.jpg

 

Figure 66: Types of Unconformity-Type Uranium Deposits

 

Schematic cross section through the Sue zones, McClean Lake property showing two different styles of uranium mineralization. View is to the north, from Baudemont et al., (1993). The diagram illustrates the spatial association of basement (B-type) and unconformity (A-type) mineralization on parallel mineralized trends and the distribution of associated argillic alteration. Mineralization is developed in graphitic gneiss units that contain concordant faults.

 

 

[The remainder of this page is intentionally left blank.]

 

38

 

7

EXPLORATION

 

Exploration conducted on the Horseshoe-Raven claim and the surrounding Hidden Bay property by Cameco for UEX between 2002 and 2005 under the exploration management service agreement and UEX as the operator after 2005, consisted of mainly diamond drilling and various geophysical surveys. Diamond drilling in the Horseshoe and Raven area during these periods is documented in Section 10.

 

Other forms of exploration conducted by, or on behalf of, UEX include several types of ground and airborne geophysical surveys, which are summarized below, and ground geochemical (soil) surveys, using conventional and partial extraction (MMI) techniques and reconnaissance surveys that were conducted to the south of the Horseshoe and Raven Deposits and to the northwest in the Vixen Lake area (Kos, 2004).

 

7.1

Geophysics in the Horseshoe and Raven Deposit Area

 

Several airborne and ground geophysical surveys that have been conducted since UEX acquired the Hidden Bay property cover all or parts of the Horseshoe and Raven Deposit areas. These include:

 

VTEM airborne EM surveys that were conducted between 2004 and 2006 over most of the Property area by Geotech Ltd. of Aurora, Ontario (Irvine, 2004; Cristall, 2005; Witherly, 2007; Cameron and Eriks, 2008b), which cover the Horseshoe and Raven areas.

 

Airborne radiometric and magnetic surveys were conducted in June 2008 by Geo Data Solutions Inc. of Laval, Quebec, which cover much of the Hidden Bay property. More detailed, northwest trending and 50 m spaced flight lines were conducted over the Horseshoe and Raven Deposit areas to aid in the identification of magnetic and radiometric patterns that could reflect both near-surface projection of mineralization and/or prospective faults potentially hosting mineralization.

 

A RESOLVE airborne EM and magnetic survey was conducted over selected parts of the Property by Fugro Airborne Surveys Corporation of Mississauga, Ontario, including Horseshoe-Raven and West Bear, in 2005 (Cameron and Eriks, 2008a). This outlined in particular the distribution of folded graphitic gneiss, which occurs to the southwest of the Raven Deposit and that could focus faulting that may control uranium mineralization.

 

A widely-spaced ground EM (Moving Loop) survey was conducted across the Horseshoe and Raven area in February – March 2002 by Quantec Geoscience Inc. of Porcupine, Ontario (Goldak and Powell, 2003). Like the RESOLVE survey, this identified EM targets in the local area mainly associated with graphitic gneiss to the south and west outside of the immediate area of the deposits.

 

These surveys have provided further insight into the geological setting of the deposits, including identification of the location of potentially controlling faults and folding of favourable host lithologies (e.g. graphitic gneiss and competent quartzite-rich host rocks near faults) that may influence the position of mineralization.

 

39

 

In addition to the geophysical surveys summarized above, which were mainly of a regional nature, a detailed direct current resistivity (induced polarization) survey was carried out over the Horseshoe and Raven Deposits as well as the surrounding area by Peter E. Walcott and Associates Limited between October and December 2006 (Walcott and Walcott, 2008). The survey was conducted along 16 lines at an azimuth of 160° spaced at 200 m over and extending beyond areas of known uranium mineralization at Horseshoe and Raven. Measurements of apparent resistivity were made along these lines using the pole-dipole technique employing a 100 m dipole and taking one-half to one-tenth separation readings at half spacing intervals.

 

Airborne radiometric and magnetic surveys were conducted in June 2008 by Geo Data Solutions Inc. of Laval, Quebec, which cover much of the Hidden Bay and Horseshoe-Raven properties. More detailed, northwest trending and 50 m spaced flight lines were conducted over the Horseshoe and Raven Deposit areas to aid in the identification of magnetic and radiometric patterns that could reflect both near-surface projection of mineralization and/or prospective faults potentially hosting mineralization.

 

7.2

Drilling in the Horseshoe and Raven Deposit Area

 

Drilling on the Property dates to the 1970s and was undertaken in a number of campaigns until mid-2009 (Figure 7‑1). All the historical drillholes targeted uranium mineralization and prospects. Between 1973 and 2009, a total of 951 diamond drilling boreholes (263,388 m) and 160 reverse circulation boreholes (2,118 m) were drilled through the Property by, Gulf, Eldorado, Cameco, and UEX, summarized in Table 7‑1. From mid-2009 to 2012, UEX drilled 105 diamond drillholes for 28,315 m.

 

Exploration/resource drilling completed at the Horseshoe and Raven Deposits post-2009 will be expanded upon below along with comments where necessary about the historical procedures that were followed on the Property at that time.

 

A review of the procedures, described below, respecting the core sizes, and procedures for logging and recording of core recoveries are considered standard industry practices and provide an acceptable basis for the geological and geotechnical interpretation of the deposits leading to the estimation of mineral resources and economic evaluation of the deposits. The QPs have no reason to believe that the listed procedures were not followed. The QPs interviewed one of the geotechnicians that worked on the Property during this period to gain an understanding of the processes and procedures followed by the UEX field team during these programs, which corresponded to the procedures and descriptions outlined below. The QPs believe that the historical data is accurate for the purposes of this TRS.

 

 

[The remainder of this page is intentionally left blank.]

 

40

 

 

image11.jpg

 

Figure 71: Horseshoe and Raven Drillhole Collars

 

41

 

 

Table 71: Summary of Drilling on the Horseshoe-Raven Property

 

 

Type

 

Meters*

 

Year

Total

DDH

RC

Sonic

Total

DDH

RC

Sonic

Company

1972

15

15

   

2,701

2,701

   

Gulf

1973

26

26

   

6,593

6,593

   

Gulf

1974

141

141

   

32,331

32,331

   

Gulf

1975

84

84

   

21,763

21,763

   

Gulf

1976

156

32

124

 

9,402

7,861

1,541

 

Gulf

1977

11

11

   

2,159

2,159

   

Gulf

1978

39

3

36

 

1,233

655

578

 

Gulf

1984

1

1

   

82

82

   

Eldorado

1985

7

7

   

542

542

   

Eldorado

2002

3

3

   

1,350

1,350

   

Cameco**

2003

1

1

   

314

314

   

Cameco**

2004

4

4

   

648

648

   

Cameco**

2005

44

44

   

12,811

12,811

   

UEX

2006

27

27

   

8,617

8,617

   

UEX

2007

210

210

   

67,777

67,777

   

UEX

2008

232

232

   

63,261

63,261

   

UEX

2009

110

110

   

33,923

33,923

   

UEX

2009***

19

19

   

5,406

5,406

   

UEX

2011

76

76

   

20,011

20,011

   

UEX

2012

10

10

   

2,898

2,898

   

UEX

Total

1,216

1,056

160

 

293,821

291,702

2,119

   

* Rounded to the nearest metre

** Cameco Operated on behalf of UEX

***After cut-off for July 2009 Resource report

 

7.2.1

Historical Drilling by Gulf in the Horseshoe and Raven Area

 

After initial discovery of the Raven Deposit, Gulf drilled a total of 53,329 m in 212 diamond drillholes over the Horseshoe and Raven Deposits between 1972 and 1978 (note Table 7‑1 tabulates totals for the whole Property, not just the deposit). Drillhole spacing of the Gulf holes is variable across the deposits, but generally varies from 30 m to 90 m and averages approximately 60 m in areas of mineralization. Historical collar locations of the Gulf drillholes are presented in Figure 7‑1. The Gulf drilling data has not been used in this resource estimate.

 

Eldorado, Cameco and UEX drilled a total of 639 boreholes for a total of 189,325 m through and around the Horseshoe and Raven deposits. Some of these holes were regional tests to assess for other pods of mineralization given their favourable geology, structure and geophysical signature. As of April 2009, the drillholes to that date comprised the basis for the database for the 2009 Palmer and Fielder Horseshoe and Raven Mineral Resource estimates.

 

7.3

Drilling (Mid-2009 – 2012)

 

During the summer of 2009 after the updated mineral resource estimate was published, 19 drillholes totaling 5,406 m were completed to test targets peripheral to the Horseshoe and Raven deposits for possible extension of mineralization and to assess nearby geophysical and geological targets (Table 7‑2). Winter drilling in 2011 was 13 drillholes for 3,553.6 m to test for additional uranium targets adjacent to the known Horseshoe and Raven deposits. Drilling in the summer of 2011 consisted of mainly definition and step-out drilling in the Raven deposit and several infill drillholes at the Horseshoe Deposit for a total of 16,457 m in 63 drillholes. Drilling in the winter of 2012 (Figure 7‑2) targeted a regional conductor package south of the deposits with 10 holes for 2,898 m.

 

 

[The remainder of this page is intentionally left blank.]

 

42

 

 

image12.jpg

 

Figure 72: Recent Historical Drilling on the Horseshoe-Raven Property

 

43

 

 

Table 72: Summary of Drilling by UEX on the Horseshoe-Raven Project

 

Borehole ID

Azimuth

Dip

Length
(m)

Easting*
(m)

Northing*
(m)

Elevation
(m)

Year

HU-359

305

-45

300.0

573861.0

6447179.0

439.0

2009

HU-360

305

-45

300.0

574161.0

6447471.0

440.0

2009

HU-361

305

-77

270.0

574532.2

6447161.5

438.0

2009

HU-362

90

-45

291.0

574642.0

6446778.0

429.0

2009

HU-363

305

-63

639.0

574779.8

6446803.8

426.0

2009

HU-364

309

-46

537.0

574288.3

6446496.3

425.0

2009

HU-365

305

-45

399.0

573992.0

6446067.5

422.0

2009

HU-366

125

-45

324.0

574355.7

6446069.1

422.0

2009

HU-367

305

-65

489.5

574355.7

6446069.1

422.0

2009

RU-217

350

-65

81.0

573326.0

6446327.0

428.0

2009

RU-218

350

-90

72.0

573326.2

6446326.8

428.0

2009

RU-219

350

-65

81.0

573295.7

6446321.4

430.0

2009

RU-220

195

-90

72.0

573295.7

6446321.0

430.0

2009

RU-221

350

-65

81.0

573355.8

6446300.0

426.0

2009

RU-222

350

-90

72.0

573268.0

6446300.0

430.0

2009

RU-223

350

-72

411.0

573235.2

6446293.0

431.0

2009

RU-224

350

-58

549.0

573012.0

6446063.0

431.0

2009

RU-225

350

-51

222.0

572386.0

6446140.0

464.0

2009

RU-226

350

-74

219.0

572429.0

6446241.0

465.0

2009

VU-001

305

-52

400.0

571641.0

6446864.0

436.0

2009

VU-002

305

-45

366.0

571687.0

6447121.0

436.0

2009

VU-003

305

-60

549.0

571370.0

6446775.0

436.0

2009

VU-004

305

-61

391.0

571125.0

6446701.0

436.0

2009

HR-001

305

-48

299.0

573651.5

6446977.7

438.0

2011

HR-002

305

-47

300.0

572439.5

6447179.8

475.0

2011

HR-003

305

-47

299.0

571473.5

6446417.0

458.0

2011

HR-004

125

-45

388.0

571270.7

6446339.0

452.0

2011

HR-005

305

-49

90.6

575330.4

6445170.0

409.0

2011

HR-006

305

-45

309.0

575322.6

6445174.0

408.0

2011

HR-007

125

-45

313.0

570921.6

6446188.8

447.0

2011

HR-008

125

-50

67.0

570820.0

6445940.0

452.0

2011

HR-009

125

-60

69.0

570820.0

6445940.0

452.0

2011

HR-010

305

-60

122.0

570500.6

6445852.7

439.0

2011

HR-011

305

-75

464.0

570482.4

6445867.9

438.0

2011

HR-012

305

-70

411.0

570095.2

6445671.0

437.0

2011

HR-013

305

-70

422.0

570547.0

6446061.8

437.0

2011

HU-368

0

-60

270.0

573963.6

6446655.8

428.0

2011

HU-369

300

-60

231.0

574223.9

6446811.8

432.0

2011

HU-370

42

-61

381.0

574111.5

6446864.5

431.0

2011

HU-371

330

-80

393.0

574435.7

6446801.3

427.0

2011

HU-372

90

-57

402.0

574472.0

6446928.4

431.0

2011

HU-373

305

-90

30.0

573893.7

6446334.3

427.0

2011

RU-227

353

-90

321.0

573381.4

6446459.8

431.0

2011

RU-228

353

-60

291.0

573333.8

6446538.0

432.0

2011

RU-229

353

-60

270.0

573482.9

6446604.1

433.0

2011

RU-230

353

-60

222.0

573417.3

6446588.5

436.0

2011

RU-231

313

-60

219.0

573535.2

6446660.2

439.0

2011

RU-232

317

-60

291.0

573615.7

6446654.1

428.0

2011

RU-233

353

-50

291.0

573331.5

6446565.2

434.0

2011

RU-234

353

-60

291.0

573335.7

6446516.6

432.0

2011

RU-235

313

-60

282.0

573572.3

6446622.4

431.0

2011

 

44

 

Borehole ID

Azimuth

Dip

Length
(m)

Easting*
(m)

Northing*
(m)

Elevation
(m)

Year

RU-236

353

-60

294.0

573338.2

6446490.4

431.0

2011

RU-237

313

-60

336.0

573622.5

6446578.6

427.0

2011

RU-238

353

-60

282.0

573437.9

6446528.9

432.0

2011

RU-239

0

-60

270.0

573489.0

6446540.4

432.0

2011

RU-240

313

-60

328.0

573666.6

6446527.8

426.0

2011

RU-241

353

-60

330.0

573512.8

6446473.8

428.0

2011

RU-242

316

-70

317.0

573711.3

6446638.4

427.0

2011

RU-243

351

-73

270.0

573307.8

6446470.4

430.0

2011

RU-244

352

-65

249.0

573307.8

6446470.4

430.0

2011

RU-245

313

-60

252.0

573720.8

6446715.0

428.0

2011

RU-246

353

-60

252.0

573260.4

6446420.8

432.0

2011

RU-247

2

-56

162.0

573047.8

6446441.2

448.0

2011

RU-248

0

-54

261.0

573290.0

6446426.5

433.0

2011

RU-249

340

-61

150.0

572686.6

6446378.8

460.0

2011

RU-250

353

-64

222.0

573214.9

6446480.7

434.0

2011

RU-251

338

-73

339.0

572776.3

6446267.0

451.0

2011

RU-252

348

-68

222.0

673186.7

6446475.1

436.0

2011

RU-253

340

-62

339.0

572736.3

6446230.9

450.0

2011

RU-254

359

-86

300.0

573018.8

6446371.9

444.0

2011

RU-255

352

-59

351.0

572626.0

6446218.2

457.0

2011

RU-256

353

-84

300.0

572988.9

6446383.5

447.0

2011

RU-257

354

-67

180.0

572829.7

6446387.8

455.0

2011

RU-258

351

-73

297.0

573347.7

6446476.5

431.0

2011

RU-259

351

-60

282.0

573347.7

6446477.1

431.0

2011

RU-260

351

-56

321.0

572591.9

6446213.8

459.0

2011

RU-261

285

-50

306.0

572825.3

6446351.7

450.0

2011

RU-262

56

-57

351.0

572942.3

6446490.0

456.0

2011

RU-263

172

-58

201.0

572986.9

6446373.6

446.0

2011

RU-264

350

-70

150.0

573041.6

6446411.0

447.0

2011

RU-265

0

-74

159.0

573328.0

6446471.4

430.0

2011

RU-266

351

-90

54.0

572856.3

6446788.7

473.0

2011

RU-267

351

-90

45.0

572637.5

6445755.9

453.0

2011

RU-268

355

-59

347.0

572530.1

6446191.6

460.0

2011

RU-269

351

-90

201.0

573565.5

6446118.1

422.0

2011

RU-270

351

-90

30.0

573562.4

6446126.4

423.0

2011

RU-271

351

-90

201.0

573348.0

6446027.9

420.0

2011

RU-272

360

-64

342.0

572870.3

6446277.3

444.0

2011

RU-273

353

-85

282.0

573260.4

6446420.8

432.0

2011

RU-274

5

-77

276.0

573046.7

6446412.4

446.0

2011

RU-275

339

-75

309.0

572811.4

6446316.3

449.0

2011

RU-276

336

-83

291.0

572829.7

6446387.8

455.0

2011

RU-277

353

-77

318.0

572874.3

6446342.2

449.0

2011

RU-278

336

-67

216.0

572829.7

6446387.8

455.0

2011

RU-279

354

-67

210.0

572867.5

6446386.9

453.0

2011

RU-280

180

-86

318.0

572921.5

6446404.3

451.0

2011

RU-281

348

-75

237.0

572890.5

6446381.4

450.0

2011

RU-282

350

-72

318.0

572549.6

6446293.9

462.0

2011

RU-283

349

-77

204.0

572919.4

6446418.5

452.0

2011

HR-014

313.1

-72

288.0

574205.7

6444616.0

288.0

2012

HR-015

310.9

-72

288.0

574359.8

6444749.0

288.0

2012

HR-016

315.0

-72

291.0

574907.0

6445340.0

291.0

2012

HR-017

307.4

-72

291.0

575152.3

6445676.0

291.0

2012

HR-018

302.9

-74

291.0

575302.2

6445803.0

291.0

2012

 

45

 

Borehole ID

Azimuth

Dip

Length
(m)

Easting*
(m)

Northing*
(m)

Elevation
(m)

Year

HR-019

302.8

-72

291.0

575532.4

6445841.0

291.0

2012

HR-020

305.7

-72

291.0

575060.4

6445465.0

291.0

2012

HR-021

304.9

-72

286.5

574885.8

6445057.0

286.5

2012

HR-022

295.8

-72

289.4

574659.5

6445005.0

289.4

2012

HR-023

305.0

-70

291.0

574380.6

6445036.0

291.0

2012

Total

   

30,025**

       

*  The North American Datum of 1983, zone 13N.

** Rounded up

 

Representative uranium assay results from the drilling campaigns after the July 2009 Resource report are summarized in Table 7‑3. These programs when drilled on the deposit confirmed continuity of mineralization or bounded mineralization down dip. Where mineralization was confirmed, it was determined that it would add incremental pounds to the deposits (Eriks and Hasegawa, 2014).

 

Table 73: Assay Results Mid-2009 through 2012

 

 

Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

HO-001

241.6

248.9

7.3

0.067

-

-

-

-

HO-002

246.5

250.0

3.5

0.114

-

-

-

-

HO-003

224.3

229.9

5.6

0.095

-

-

-

-

 

233.2

239.8

6.6

0.551

-

-

-

-

HO-004

184.1

201.5

17.4

0.332

-

-

-

-

 

222.3

230.6

8.3

0.377

-

-

-

-

HO-006

243.5

246.5

3.0

0.117

-

-

-

-

HO-007

232.5

237.9

5.4

0.255

-

-

-

-

HO-008

118.7

120.4

1.7

0.137

-

-

-

-

 

199.1

226.0

26.9

0.096

-

-

-

-

HO-009

149.9

153.1

3.2

2.557

-

-

-

-

HO-014

174.9

179.9

5.0

0.101

-

-

-

-

 

204.6

205.9

1.3

0.206

-

-

-

-

 

150.3

160.9

10.6

0.109

-

-

-

-

HO-015

168.3

174.5

6.2

0.102

-

-

-

-

 

186.6

200.0

13.4

0.305

-

-

-

-

HO-016

209.0

220.2

11.2

0.162

-

-

-

-

 

233.2

236.0

2.8

0.105

-

-

-

-

 

159.4

183.5

24.1

0.015

-

-

-

-

HS-001

228.0

231.6

3.6

0.076

-

-

-

-

 

239.3

249.9

10.6

0.014

-

-

-

-

 

258.5

260.6

2.1

0.177

-

-

-

-

HU-006

166.9

183.3

16.4

0.25

-

-

-

-

HU-007

163.6

175.7

12.1

0.39

-

-

-

-

HU-008

155.9

178.5

22.6

0.14

-

-

-

-

 

184.5

188.0

3.5

0.1

-

-

-

-

HU-009

190.9

192.0

1.1

0.2

-

-

-

-

HU-010

111.0

114.0

3.0

0.1

-

-

-

-

 

261.2

263.0

1.8

0.08

-

-

-

-

HU-011

240.7

243.6

2.9

0.19

-

-

-

-

 

253.3

258.5

5.2

0.72

-

-

-

-

HU-012

179.0

191.7

12.7

0.14

-

-

-

-

 

196.3

199.5

3.2

0.13

-

-

-

-

HU-013

239.0

242.6

3.6

0.34

-

-

-

-

 

46

 

 

  Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

168.7

169.5

0.8

0.28

-

-

-

-

HU-014

179.9

181.7

1.8

0.38

-

-

-

-

 

207.9

209.6

1.7

0.13

-

-

-

-

HU-015

180.0

194.2

14.2

0.52

-

-

-

-

 

199.6

213.9

14.3

3.97

201.5

213.9

12.4

4.53

HU-016        

204.8

208.2

3.4

10.3

         

204.8

205.4

0.6

22.17

HU-018

109.1

116.6

7.8

0.08

-

-

-

-

 

245.1

261.2

10.6

0.17

-

-

-

-

 

93.9

95.6

1.7

0.14

-

-

-

-

 

205.7

210.0

4.3

0.15

-

-

-

-

 

220.5

221.4

0.9

0.18

-

-

-

-

HU-019

225.8

229.6

3.8

0.13

-

-

-

-

 

252.7

253.8

1.1

0.53

-

-

-

-

 

259.0

261.7

2.7

0.48

-

-

-

-

 

276.0

279.5

3.5

0.29

-

-

-

-

 

284.5

285.5

1.0

0.23

-

-

-

-

HU-020

279.7

297.6

17.9

0.26

-

-

-

-

 

301.0

301.7

0.7

0.22

-

-

-

-

HU-021

310.0

313.0

3.0

0.16

-

-

-

-

 

318.7

320.5

1.8

0.11

-

-

-

-

 

208.5

247.5

39.0

0.41

-

-

-

-

HU-022

257.6

258.2

0.6

0.31

-

-

-

-

 

325.2

325.6

0.3

0.33

-

-

-

-

HU-023

174.0

176.8

2.8

0.17

-

-

-

-

HU-024

307.5

343.8

35.2

0.21

-

-

-

-

HU-025

166.5

173.3

6.8

0.07

-

-

-

-

 

209.1

210.3

1.2

0.16

-

-

-

-

HU-026

317.2

318.0

0.9

0.14

-

-

-

-

HU-027

309.6

311.7

2.1

0.34

-

-

-

-

HU-028

185.6

201.6

16.0

0.32

191.8

193.4

1.6

2.55

         

192.7

193.1

0.4

5.31

HU-029

188.0

194.0

6.0

0.06

-

-

-

-

 

205.7

209.3

3.6

0.06

-

-

-

-

HU-030

188.0

198.5

10.5

0.21

-

-

-

-

 

246.9

247.9

1.1

1.02

-

-

-

-

HU-032

193.8

200.6

6.8

0.58

-

-

-

-

HU-033

177.0

194.0

17.0

0.49

190.3

193.4

3.1

1.9

         

193.0

193.4

0.4

5.93

HU-034

170.7

187.2

16.5

0.07

-

-

-

-

HU-036

223.5

226.1

2.6

1.08

-

-

-

-

 

238.0

246.5

8.5

0.16

-

-

-

-

HU-037

181.0

194.4

13.4

0.74

181.0

184.9

3.9

1.97

         

184.3

184.9

0.6

5.27

 

211.3

212.3

1.0

0.79

-

-

-

-

HU-038

199.5

219.8

20.3

0.37

199.5

200.5

1.0

3.9

 

136.9

139.4

2.5

0.29

-

-

-

-

HU-039

150.6

163.4

12.8

0.63

162.8

163.4

0.6

7.55

 

204.5

205.9

1.4

0.16

-

-

-

-

 

236.3

238.3

2.0

0.18

-

-

-

-

HU-040

262.0

272.4

10.4

0.15

-

-

-

-

 

290.5

304.4

13.9

0.12

-

-

-

-

HU-041

183.5

190.3

6.8

0.08

-

-

-

-

 

212.8

214.0

1.2

0.22

-

-

-

-

 

156.6

161.4

4.8

0.05

-

-

-

-

 

179.4

189.7

10.3

1.49

183.8

187.1

3.3

4.27

HU-043        

184.2

184.7

0.5

10.59

 

240.9

243.6

2.7

0.17

-

-

-

-

 

260.8

262.4

1.6

0.09

-

-

-

-

 

297.9

298.4

0.5

0.19

-

-

-

-

 

47

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

158.3

159.0

0.7

0.43

-

-

-

-

HU-044

178.3

179.4

1.1

0.11

-

-

-

-

 

207.0

235.9

28.9

0.21

220.1

226.0

5.9

0.67

 

253.5

268.7

15.2

0.09

-

-

-

-

 

163.0

164.3

1.3

0.3

-

-

-

-

HU-045

 

 

 

 

172.0

172.8

0.8

1.94

  172.0 191.0 19.0 0.58

175.4

179.7

4.3

0.9

         

190.0

191.0

1.0

2.72

 

117.9

119.0

1.1

0.14

-

-

-

-

 

151.4

153.4

2.0

0.07

-

-

-

-

 

207.7

208.6

0.9

0.2

-

-

-

-

HU-046

234.1

234.4

0.3

0.21

-

-

-

-

 

237.9

239.3

1.4

0.1

-

-

-

-

 

242.1

243.5

1.4

0.07

-

-

-

-

 

254.3

267.4

13.1

0.14

-

-

-

-

 

272.2

273.1

0.9

0.12

-

-

-

-

HU-047

247.0

249.0

2.0

0.14

-

-

-

-

 

279.0

294.0

15.0

0.23

-

-

-

-

 

110.6

111.8

1.2

0.12

-

-

-

-

 

127.5

129.3

1.8

0.09

-

-

-

-

HU-048

135.2

139.7

4.5

0.06

-

-

-

-

 

154.5

157.6

3.1

0.07

-

-

-

-

 

253.9

256.5

2.6

0.39

-

-

-

-

HU-049

180.9

197.3

16.4

0.21

-

-

-

-

HU-050

274.7

276.4

1.7

0.06

-

-

-

-

 

297.7

322.3

24.6

0.38

306.6

321.1

14.5

0.56

HU-051

175.0

198.0

23.0

0.31

197.0

197.5

0.5

5.66

HU-052

228.9

253.3

24.4

0.11

-

-

-

-

 

258.5

259.5

1.0

0.15

-

-

-

-

HU-053

131.2

132.5

1.3

0.09

-

-

-

-

 

152.7

154.0

1.3

0.15

-

-

-

-

 

249.0

254.7

5.8

0.3

-

-

-

-

HU-054

265.9

267.4

1.5

0.09

-

-

-

-

 

273.3

287.0

13.7

0.17

-

-

-

-

 

300.3

308.8

8.5

0.18

-

-

-

-

 

137.5

139.5

2.0

0.06

-

-

-

-

HU-056

161.8

170.3

8.5

0.09

-

-

-

-

 

221.8

228.3

6.5

0.4

-

-

-

-

HU-057

135.0

140.0

5.0

0.07

-

-

-

-

 

163.0

165.0

2.0

0.09

-

-

-

-

 

254.9

260.1

5.2

0.13

-

-

-

-

HU-058

264.0

264.7

0.7

0.09

-

-

-

-

 

267.6

269.2

1.6

0.18

-

-

-

-

 

307.0

322.4

15.4

0.1

-

-

-

-

HU-060

119.3

120.1

0.8

0.12

-

-

-

-

HU-061

156.9

183.5

26.6

0.5

162.5

173.9

11.4

0.99

 

250.8

252.6

1.8

0.45

-

-

-

-

 

269.1

284.0

14.9

0.14

-

-

-

-

HU-062

299.2

304.1

4.9

0.07

-

-

-

-

 

323.7

330.2

6.5

0.06

-

-

-

-

 

338.2

340.7

2.5

0.13

-

-

-

-

HU-063

322.4

383.3

60.9

0.18

-

-

-

-

 

48

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

281.0

292.0

11.0

0.2

-

-

-

-

 

312.4

314.0

1.6

0.11

-

-

-

-

HU-065

331.3

331.9

0.6

0.34

-

-

-

-

 

402.6

420.3

17.7

0.61

407.1

420.3

13.2

0.8

         

408.4

413.6

5.2

1.58

HU-066

151.0

171.0

20.0

0.12

-

-

-

-

 

264.5

275.0

10.5

0.06

-

-

-

-

HU-067

300.0

301.0

1.0

0.1

-

-

-

-

 

325.0

328.0

3.0

0.07

-

-

-

-

 

363.0

369.5

6.5

0.11

-

-

-

-

HU-068

181.2

184.3

3.1

0.08

-

-

-

-

 

239.0

240.6

1.6

0.35

-

-

-

-

HU-069

421.0

421.3

0.3

0.19

-

-

-

-

 

111.2

111.6

0.4

0.23

-

-

-

-

 

116.1

117.3

1.2

0.08

-

-

-

-

HU-070

120.4

123.8

3.4

0.05

-

-

-

-

 

131.0

133.0

2.0

0.05

-

-

-

-

 

217.3

223.6

6.3

0.08

-

-

-

-

HU-071

245.6

246.5

0.9

0.3

-

-

-

-

 

278.3

280.5

2.2

0.23

-

-

-

-

 

285.0

288.0

3.0

0.06

-

-

-

-

HU-072

326.5

328.0

1.5

0.17

-

-

-

-

 

333.1

344.0

10.9

0.43

-

-

-

-

 

401.0

410.4

9.4

0.09

-

-

-

-

HU-075

257.5

259.0

1.5

0.47

-

-

-

-

HU-080

153.3

154.0

0.7

0.16

-

-

-

-

 

265.1

267.0

1.9

0.51

-

-

-

-

 

279.8

280.2

0.4

0.33

-

-

-

-

HU-081

315.0

324.8

9.8

0.5

-

-

-

-

 

334.0

343.0

9.0

0.14

-

-

-

-

 

401.0

407.0

6.0

0.17

-

-

-

-

 

411.0

412.0

1.0

0.06

-

-

-

-

 

163.0

164.0

1.0

0.32

-

-

-

-

HU-083

170.5

173.2

2.7

0.2

-

-

-

-

 

177.4

177.7

0.3

0.25

-

-

-

-

 

182.5

186.6

4.1

0.8

183.0

183.4

0.4

4.37

HU-084

178.8

193.3

14.5

0.15

-

-

-

-

 

197.0

198.0

1.0

0.06

-

-

-

-

 

264.0

266.0

2.0

0.08

-

-

-

-

HU-085

288.0

326.5

38.5

0.21

304.9

314.5

9.6

0.35

 

333.5

335.0

1.5

0.09

-

-

-

-

HU-087

279.0

280.0

1.0

0.6

-

-

-

-

 

207.3

207.8

0.5

0.09

-

-

-

-

 

209.3

210.0

0.7

0.07

-

-

-

-

 

220.6

232.6

12.0

0.13

-

-

-

-

HU-088

264.4

269.8

5.4

0.26

-

-

-

-

 

286.3

289.1

2.8

0.07

-

-

-

-

 

291.4

294.7

3.3

0.08

-

-

-

-

 

297.1

335.3

38.2

0.22

323.5

330.8

7.3

0.55

 

201.3

213.4

12.1

0.17

-

-

-

-

HU-089

243.2

243.6

0.4

0.13

-

-

-

-

 

251.0

256.0

5.0

0.05

-

-

-

-

 

263.8

270.0

6.2

0.37

-

-

-

-

HU-090

149.0

151.0

2.0

0.1

-

-

-

-

 

310.5

314.0

3.5

0.12

-

-

-

-

 

173.3

174.5

1.2

0.09

-

-

-

-

HU-091

187.0

194.0

7.0

0.39

-

-

-

-

 

221.0

223.1

2.1

0.21

-

-

-

-

 

49

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

162.0

164.0

2.0

0.11

-

-

-

-

HU-092

215.0

227.0

12.0

0.15

-

-

-

-

 

243.0

245.5

2.5

0.28

-

-

-

-

 

289.0

291.0

2.0

0.07

-

-

-

-

HU-093

179.6

202.6

23.0

0.83

180.9

181.4

0.5

10.26

         

196.6

197.6

1.0

4.86

 

249.0

254.6

5.6

0.15

-

-

-

-

HU-094

259.2

274.0

14.8

0.09

260.5

262.5

2.0

0.28

 

293.7

295.4

1.7

0.16

-

-

-

-

HU-095

217.6

221.8

4.2

0.1

-

-

-

-

 

224.7

226.0

1.3

0.92

-

-

-

-

 

140.6

142.0

1.4

0.15

-

-

-

-

HU-096

172.0

174.0

2.0

0.06

-

-

-

-

 

181.6

186.0

4.4

0.13

-

-

-

-

 

99.5

107.0

7.5

0.11

-

-

-

-

HU-097

119.0

121.0

2.0

0.24

-

-

-

-

 

141.0

141.8

0.8

0.19

-

-

-

-

HU-098

194.0

219.4

25.4

0.22

209.5

219.4

9.9

0.41

 

236.7

243.5

6.8

0.4

236.7

258.0

21.3

0.19

HU-099

182.3

190.6

8.3

1.86

185.1

188.2

3.1

4.2

 

153.0

184.5

31.5

0.35

162.8

164.0

1.2

3.45

HU-100        

171.4

173.0

1.6

2.13

 

194.0

196.0

2.0

0.27

-

-

-

-

HU-101

162.1

184.4

22.3

0.82

169.0

171.3

2.3

1.91

         

176.0

178.2

2.2

3.87

 

196.5

203.5

7.0

0.91

-

-

-

-

HU-102

223.0

244.0

21.0

0.68

229.0

234.5

5.5

1.57

 

256.0

264.0

8.0

0.1

-

-

-

-

 

231.0

236.6

5.6

0.18

-

-

-

-

HU-103

275.0

278.0

3.0

0.39

-

-

-

-

 

300.0

307.0

7.0

0.06

-

-

-

-

 

320.6

332.0

11.4

0.37

-

-

-

-

 

136.8

138.8

2.0

0.1

-

-

-

-

 

140.3

141.8

1.5

0.08

-

-

-

-

HU-104

147.8

149.6

1.8

0.06

-

-

-

-

 

151.6

169.5

17.9

0.12

-

-

-

-

 

177.3

178.4

1.1

0.12

-

-

-

-

 

196.3

200.6

4.3

0.09

-

-

-

-

 

135.0

141.0

6.0

0.05

-

-

-

-

HU-105

152.5

154.0

1.5

0.22

-

-

-

-

 

236.0

237.9

1.9

0.08

-

-

-

-

HU-106

180.8

185.1

4.3

2.2

-

-

-

-

 

211.5

213.7

2.2

0.12

-

-

-

-

HU-107

296.0

327.0

31.0

0.18

-

-

-

-

 

352.4

353.3

0.9

0.16

-

-

-

-

HU-108

251.8

266.8

15.0

0.32

-

-

-

-

 

317.8

319.8

2.0

0.11

-

-

-

-

 

272.8

274.8

2.0

0.06

-

-

-

-

HU-109

277.6

328.0

50.4

0.18

-

-

-

-

 

286.0

298.6

12.6

0.34

-

-

-

-

 

363.0

373.0

10.0

0.12

-

-

-

-

 

172.0

173.5

1.5

0.06

-

-

-

-

HU-110

186.0

189.0

3.0

0.09

-

-

-

-

 

266.0

267.5

1.5

0.07

-

-

-

-

 

275.5

276.5

1.0

0.37

-

-

-

-

 

50

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

HU-111

163.5

183.9

20.4

0.36

179.2

183.9

4.7

1.27

 

204.6

206.7

2.1

0.42

-

-

-

-

HU-112

237.0

238.0

1.0

0.21

-

-

-

-

 

242.8

258.9

16.1

0.31

-

-

-

-

 

 

 

 

 

256.5

259.0

2.5

1.78

HU-113 256.5 271.9 15.4 0.73

266.4

271.9

5.5

1.2

         

270.2

271.6

1.4

3.33

HU-114

225.8

227.5

1.7

0.08

-

-

-

-

 

230.2

235.5

5.3

0.28

-

-

-

-

HU-115

299.7

302.0

2.3

0.1

-

-

-

-

HU-114

311.4

312.9

1.5

0.08

-

-

-

-

HU-116

139.7

140.3

0.6

0.26

-

-

-

-

 

304.7

310.0

5.3

0.2

-

-

-

-

 

 

 

 

 

264.7

266.2

1.5

0.59

HU-117 264.7 329.7 65.0 0.16

273.2

286.8

13.6

0.27

         

319.4

327.0

7.6

0.37

HU-118

170.9

187.0

16.1

0.34

180.2

187.0

6.8

0.68

 

192.0

195.0

3.0

0.07

-

-

-

-

 

246.0

248.3

2.3

0.22

-

-

-

-

HU-119

273.3

274.2

0.9

0.11

-

-

-

-

 

290.0

346.4

56.4

0.22

291.8

302.3

10.5

0.36

 

131.6

132.8

1.2

0.39

-

-

-

-

 

172.2

174.7

2.5

0.08

-

-

-

-

HU-120

178.2

179.0

0.8

0.14

-

-

-

-

 

194.6

195.9

1.3

0.23

-

-

-

-

 

207.1

207.5

0.4

0.3

-

-

-

-

HU-121

266.0

269.0

3.0

0.09

-

-

-

-

HU-121

345.0

347.3

2.3

0.22

-

-

-

-

HU-122

199.4

199.9

0.5

0.25

-

-

-

-

HU-123

285.0

317.0

32.0

0.26

296.7

308.6

11.9

0.51

HU-124

208.2

208.7

0.5

0.25

-

-

-

-

HU-126

190.5

213.6

23.1

0.65

199.9

205.0

5.2

1.89

HU-129

187.2

190.4

3.2

0.36

-

-

-

-

HU-130

288.9

304.9

16.0

0.64

298.4

304.1

5.7

1.15

 

252.5

269.5

17.0

0.25

-

-

-

-

HU-131

277.0

279.0

2.0

0.1

-

-

-

-

 

290.0

290.6

0.6

0.18

-

-

-

-

 

300.0

307.0

7.0

0.1

-

-

-

-

 

272.6

274.6

2.0

0.14

-

-

-

-

HU-132

290.0

291.3

1.3

0.08

-

-

-

-

 

314.7

319.3

4.6

0.14

-

-

-

-

HU-133

254.2

298.0

43.8

0.28

-

-

-

-

 

136.4

138.2

1.8

0.08

-

-

-

-

 

211.0

213.4

2.4

0.14

-

-

-

-

134

225.0

226.8

1.8

0.16

-

-

-

-

 

243.9

281.5

37.6

0.65

248.6

280.3

31.7

0.75

         

272.2

278.3

6.1

3

 

278.0

278.6

0.6

0.2

-

-

-

-

HU-135

286.9

299.4

12.5

0.1

-

-

-

-

 

358.0

361.5

3.5

0.05

-

-

-

-

 

257.5

279.0

21.5

0.27

257.5

262.0

4.5

0.75

HU-136

295.0

296.0

1.0

0.25

-

-

-

-

 

302.5

313.0

10.5

0.36

-

-

-

-

 

325.0

326.0

1.0

0.21

-

-

-

-

HU-137

225.8

231.7

5.9

0.25

-

-

-

-

 

259.3

260.7

1.4

0.67

-

-

-

-

 

51

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

266.7

269.6

2.9

0.25

-

-

-

-

HU-138

282.9

310.0

27.1

0.34

289.5

295.8

6.3

0.98

 

333.6

335.3

1.7

0.06

-

-

-

-

HU-139

187.2

191.9

4.7

0.05

-

-

-

-

 

200.6

212.0

11.4

0.32

-

-

-

-

HU-140

179.0

187.2

8.2

0.2

-

-

-

-

HU-143

319.5

321.8

2.3

0.1

-

-

-

-

 

327.3

329.0

1.7

0.4

-

-

-

-

 

136.8

138.5

1.7

0.1

-

-

-

-

HU-144

238.6

276.0

37.4

0.47

253.0

259.2

6.2

1.08

         

268.9

276.0

7.1

1

HU-145

157.6

167.6

10.0

0.06

-

-

-

-

 

196.0

201.3

5.3

0.1

-

-

-

-

HU-146

148.4

156.5

8.1

0.11

-

-

-

-

 

207.8

214.8

7.0

0.17

-

-

-

-

HU-147

276.0

277.1

1.1

0.17

-

-

-

-

 

281.1

303.3

22.2

0.22

-

-

-

-

HU-150

233.8

239.7

5.9

0.26

-

-

-

-

 

250.6

260.0

9.4

0.18

-

-

-

-

 

107.8

109.5

1.7

0.07

-

-

-

-

 

132.8

134.5

1.7

0.11

-

-

-

-

HU-151

225.9

236.0

10.1

0.12

-

-

-

-

 

257.5

262.0

4.5

0.31

-

-

-

-

 

273.0

273.9

0.9

0.14

-

-

-

-

HU-152

244.8

247.3

2.5

0.28

-

-

-

-

 

153.7

156.7

3.0

0.06

-

-

-

-

HU-153

281.0

299.0

18.0

0.12

-

-

-

-

 

311.9

315.5

3.6

0.26

-

-

-

-

 

331.1

333.9

2.8

0.44

-

-

-

-

HU-155

307.0

322.5

15.5

0.19

-

-

-

-

HU-156

168.8

187.0

18.2

1.01

-

-

-

-

HU-157

285.5

320.4

34.9

0.13

-

-

-

-

HU-158

257.1

265.7

8.6

0.21

-

-

-

-

 

306.6

330.0

23.4

0.34

317.2

317.7

0.5

3.83

HU-159

389.6

390.6

1.0

0.11

-

-

-

-

 

270.0

280.9

10.9

0.07

-

-

-

-

 

287.5

293.0

5.5

0.07

-

-

-

-

HU-160

313.4

314.5

1.1

0.09

-

-

-

-

 

440.5

443.2

2.7

0.12

-

-

-

-

 

452.5

463.2

10.7

0.14

-

-

-

-

 

130.0

131.5

1.5

0.14

-

-

-

-

HU-161

247.7

249.0

1.3

0.11

-

-

-

-

 

279.0

292.8

13.8

0.45

287.8

288.7

0.9

5.19

HU-162

131.3

133.8

2.5

0.1

-

-

-

-

 

220.7

221.8

1.1

0.4

-

-

-

-

HU-163

301.0

302.7

1.7

0.16

-

-

-

-

 

326.5

348.0

21.5

0.29

329.5

337.2

7.7

0.58

 

155.4

164.0

8.6

0.08

-

-

-

-

HU-164

245.2

247.0

1.8

0.09

-

-

-

-

 

263.0

266.5

3.5

0.1

-

-

-

-

 

276.5

284.0

7.9

0.21

-

-

-

-

HU-166

291.5

303.0

11.5

0.15

-

-

-

-

 

319.0

325.0

6.0

0.07

-

-

-

-

HU-167

243.0

244.0

1.0

0.15

-

-

-

-

HU-168

286.6

335.8

49.2

0.12

286.6

293.0

6.4

0.24

 

52

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

HU-169

320.5

326.5

6.0

0.3

-

-

-

-

HU-170

309.8

312.6

2.8

0.42

-

-

-

-

HU-171

235.3

236.9

1.6

0.33

-

-

-

-

 

309.8

333.9

24.1

0.31

-

-

-

-

 

243.0

250.8

7.8

0.07

-

-

-

-

 

258.2

258.7

0.5

0.09

-

-

-

-

HU-173

271.0

273.3

2.3

0.17

-

-

-

-

 

287.0

296.6

9.6

0.21

-

-

-

-

 

305.0

309.5

4.5

0.07

-

-

-

-

 

319.6

329.0

9.4

0.08

-

-

-

-

 

116.3

120.5

4.2

0.1

-

-

-

-

 

136.0

137.0

1.0

0.19

-

-

-

-

HU-175

183.3

185.4

2.1

0.07

-

-

-

-

 

211.5

230.0

18.5

0.12

-

-

-

-

 

252.1

276.4

24.3

0.25

252.1

255.4

3.3

0.66

         

267.2

268.7

1.5

1.35

HU-177

400.4

402.5

2.1

0.09

-

-

-

-

 

130.8

131.6

0.8

0.14

-

-

-

-

HU-178

275.2

276.3

1.1

0.19

-

-

-

-

 

281.5

291.3

9.8

0.35

288.7

290.3

1.6

1.02

 

216.0

217.4

1.4

0.09

-

-

-

-

HU-180

220.8

221.7

0.9

0.08

-

-

-

-

 

244.1

252.4

8.3

0.1

-

-

-

-

 

261.0

279.6

18.6

0.32

-

-

-

-

HU-182

172.7

183.0

10.3

0.87

-

-

-

-

 

106.9

112.7

5.8

0.17

-

-

-

-

HU-183

115.9

117.0

1.1

0.2

-

-

-

-

 

240.9

243.0

2.1

0.09

-

-

-

-

 

269.3

275.3

6.0

0.22

-

-

-

-

HU-184

181.5

195.8

14.3

0.28

-

-

-

-

HU-185

182.4

186.7

4.3

0.31

-

-

-

-

HU-188

166.2

173.3

7.1

0.25

-

-

-

-

HU-189

164.5

166.0

1.5

0.12

-

-

-

-

 

176.9

188.0

11.1

0.18

-

-

-

-

 

96.2

97.7

1.5

0.15

-

-

-

-

HU-190

120.5

127.1

6.6

0.15

-

-

-

-

 

192.5

194.1

1.6

0.19

-

-

-

-

HU-192

166.0

167.0

1.0

0.13

-

-

-

-

 

192.5

194.5

2.0

0.2

-

-

-

-

HU-193

176.0

176.8

0.8

0.2

-

-

-

-

 

200.1

201.9

1.8

0.78

-

-

-

-

HU-193

206.5

207.2

0.7

0.45

-

-

-

-

 

146.0

149.0

3.0

0.1

-

-

-

-

HU-194

153.0

156.5

3.5

0.6

-

-

-

-

 

179.0

180.5

1.5

0.49

-

-

-

-

HU-195

195.7

196.6

0.9

0.43

-

-

-

-

HU-197

135.0

138.2

3.2

0.22

-

-

-

-

 

155.0

157.0

2.0

0.11

-

-

-

-

HU-198

166.8

168.5

1.7

0.07

-

-

-

-

 

209.8

210.4

0.6

0.73

-

-

-

-

HU-199

111.8

125.0

13.2

0.21

-

-

-

-

 

205.8

206.7

0.9

0.38

-

-

-

-

 

99.5

100.0

0.5

0.65

-

-

-

-

HU-200

140.0

142.0

2.0

0.13

-

-

-

-

 

221.7

230.2

8.5

0.15

-

-

-

-

HU-201

214.7

216.0

1.3

0.19

-

-

-

-

 

53

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

HU-205

167.9

168.8

0.9

0.54

-

-

-

-

HU-208

243.7

248.0

4.3

0.12

-

-

-

-

 

288.5

302.1

13.6

0.23

-

-

-

-

HU-209

210.5

211.3

0.8

2.81

-

-

-

-

 

137.0

138.5

1.5

0.12

-

-

-

-

HU-212

211.0

212.6

1.6

0.39

-

-

-

-

 

243.0

245.6

2.6

0.08

-

-

-

-

 

252.8

272.4

19.6

0.34

-

-

-

-

HU-213

135.8

136.9

1.1

0.17

-

-

-

-

 

131.2

132.2

1.0

0.64

-

-

-

-

HU-214

137.9

139.5

1.6

0.87

-

-

-

-

 

171.3

173.0

1.7

0.18

-

-

-

-

 

122.0

123.4

1.4

0.08

-

-

-

-

 

237.0

245.2

8.2

0.16

-

-

-

-

HU-216

257.0

259.0

2.0

0.12

-

-

-

-

 

274.6

285.0

10.4

0.22

-

-

-

-

 

320.0

320.6

0.6

0.21

-

-

-

-

HU-217

187.4

205.5

18.1

0.29

-

-

-

-

HU-220

122.0

156.0

34.0

0.27

-

-

-

-

 

134.9

137.0

2.1

0.12

-

-

-

-

HU-221

278.5

281.5

3.0

0.09

-

-

-

-

 

286.7

307.6

20.9

0.16

-

-

-

-

HU-223

104.5

131.1

26.6

0.23

-

-

-

-

HU-225

155.7

162.8

7.1

0.39

-

-

-

-

 

183.3

184.2

0.9

0.77

-

-

-

-

HU-226

185.8

189.3

3.5

0.36

-

-

-

-

HU-228

132.0

135.0

3.0

0.05

-

-

-

-

 

142.0

143.0

1.0

0.21

-

-

-

-

HU-232

184.0

184.8

0.8

0.36

-

-

-

-

 

204.5

207.2

2.7

0.37

-

-

-

-

HU-235

167.0

185.0

18.0

0.1

-

-

-

-

 

120.4

123.0

2.6

0.2

-

-

-

-

HU-240

191.0

194.2

3.2

0.18

-

-

-

-

 

200.0

205.4

5.4

0.05

-

-

-

-

 

211.3

212.0

0.7

0.69

-

-

-

-

HU-242

192.0

193.8

1.8

2.84

-

-

-

-

HU-246

236.8

237.6

0.8

0.42

-

-

-

-

 

131.7

134.0

2.3

0.09

-

-

-

-

HU-247

175.0

177.0

2.0

0.07

-

-

-

-

 

206.6

216.2

9.6

0.81

-

-

-

-

 

199.0

200.3

1.3

0.13

-

-

-

-

HU-249

206.0

207.5

1.5

0.13

-

-

-

-

 

215.7

216.3

0.6

0.65

-

-

-

-

HU-252

224.3

225.5

1.2

0.07

-

-

-

-

HU-254

199.5

203.3

3.8

0.81

-

-

-

-

 

208.3

209.7

1.4

0.7

-

-

-

-

HU-257

290.4

291.5

1.1

0.13

-

-

-

-

 

296.4

296.9

0.5

0.38

-

-

-

-

 

318.3

319.5

1.2

0.1

-

-

-

-

HU-259

322.7

323.9

1.2

0.46

-

-

-

-

 

340.2

340.7

0.5

0.3

-

-

-

-

HU-269

128.6

129.2

0.6

0.499

-

-

-

-

HU-270

173.5

179.1

5.6

0.358

178.7

179.1

0.4

4.197

HU-281

211.9

213.2

1.3

0.234

-

-

-

-

HU-282

166.7

174.3

7.6

0.885

172.6

174.3

1.7

3.048

HU-283

296.2

297.1

0.9

0.629

-

-

-

-

 

54

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

HU-284

133.5

171.2

37.7

0.073

155.4

157.4

2.0

0.378

 

183.2

185.0

1.8

0.081

-

-

-

-

HU-286

189.0

196.3

7.3

0.457

191.0

192.0

1.0

1.58

 

207.0

207.6

0.6

0.506

-

-

-

-

 

160.7

162.4

1.7

0.094

-

-

-

-

HU-287

255.0

258.0

3.0

0.058

-

-

-

-

 

285.0

285.7

0.7

0.391

-

-

-

-

HU-288

178.0

186.0

8.0

0.229

-

-

-

-

 

232.0

239.7

7.7

0.58

232.0

233.9

1.9

1.492

 

315.9

317.5

1.6

0.196

-

-

-

-

HU-289

 

 

 

 

354.9

358.7

3.8

1.28

  350.1 373.1 23.0 0.567

355.8

356.5

0.7

4.598

         

369.1

372.8

3.7

1.903

         

369.6

370.2

0.6

5.706

HU-291

143.8

178.0

34.2

0.225

-

-

-

-

 

172.4

178.0

5.6

0.395

-

-

-

-

HU-292

276.5

277.5

1.0

0.117

-

-

-

-

 

331.5

332.0

0.5

1.486

-

-

-

-

HU-294

212.7

214.4

1.7

0.088

-

-

-

-

 

154.5

155.5

1.0

0.134

-

-

-

-

HU-295

174.6

179.0

4.4

0.129

-

-

-

-

 

287.0

287.4

0.4

1.191

-

-

-

-

 

296.4

296.8

0.4

0.495

-

-

-

-

HU-296

191.2

195.0

3.8

0.108

-

-

-

-

 

274.5

276.1

1.6

0.358

-

-

-

-

 

281.9

285.0

3.1

0.055

-

-

-

-

HU-297

292.4

294.0

1.6

0.198

-

-

-

-

 

308.1

333.1

25.0

0.176

-

-

-

-

 

339.5

344.0

4.5

0.135

-

-

-

-

 

346.2

347.5

1.3

1.493

-

-

-

-

HU-298

374.0

377.0

3.0

0.05

-

-

-

-

 

392.5

397.2

4.7

0.178

-

-

-

-

HU-300

303.8

305.6

1.8

0.085

-

-

-

-

 

313.6

314.9

1.3

0.147

-

-

-

-

HU-301

153.2

191.0

37.8

0.098

186.9

189.2

2.3

0.792

 

 

 

 

 

342.5

345.5

3.0

0.814

HU-302 342.5 384.0 41.5 0.258

357.9

358.6

0.7

3.985

         

377.0

384.0

7.0

0.449

 

413.5

414.5

1.0

0.154

-

-

-

-

HU-304

158.9

164.0

5.1

0.068

-

-

-

-

 

184.0

185.8

1.8

0.092

-

-

-

-

HU-305

224.0

225.5

1.5

0.111

-

-

-

-

 

261.5

266.5

5.0

0.089

-

-

-

-

 

94.0

99.0

5.0

0.105

-

-

-

-

HU-306

133.0

140.5

7.5

0.104

-

-

-

-

 

218.0

219.0

1.0

0.137

-

-

-

-

 

152.6

154.7

2.1

0.111

-

-

-

-

HU-307

166.7

168.3

1.6

0.08

-

-

-

-

 

177.1

189.0

11.9

0.055

-

-

-

-

HU-308

126.3

167.0

41.2

0.066

-

-

-

-

 

267.0

284.3

17.3

0.078

-

-

-

-

 

317.8

325.6

7.8

0.073

-

-

-

-

HU-310

341.0

352.0

11.0

0.089

-

-

-

-

 

363.0

364.0

1.0

0.22

-

-

-

-

HU-311

166.6

181.6

15.0

0.082

-

-

-

-

 

254.1

256.0

1.9

0.366

-

-

-

-

 

55

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

110.3

116.0

5.7

0.111

-

-

-

-

HU-314

166.0

169.0

3.0

0.067

-

-

-

-

 

177.0

179.0

2.0

0.061

-

-

-

-

 

300.0

303.0

3.0

0.093

-

-

-

-

HU-315

323.7

325.0

1.3

0.079

-

-

-

-

 

377.6

378.2

0.6

0.656

-

-

-

-

 

168.0

176.0

8.0

0.187

-

-

-

-

HU-316

225.0

225.4

0.4

0.406

-

-

-

-

 

248.5

249.5

1.0

0.291

-

-

-

-

 

289.2

291.0

1.8

0.067

-

-

-

-

 

145.0

146.0

1.0

0.212

-

-

-

-

HU-317

157.6

157.9

0.3

0.891

-

-

-

-

 

174.7

181.7

7.0

0.071

-

-

-

-

HU-319

214.0

216.4

2.4

0.106

-

-

-

-

HU-320

385.0

386.0

1.0

0.111

-

-

-

-

HU-321

151.0

172.0

21.0

0.068

-

-

-

-

HU-323

211.0

213.0

2.0

0.107

-

-

-

-

 

179.6

180.2

0.6

0.248

-

-

-

-

HU-324

362.5

363.7

1.2

0.315

-

-

-

-

 

379.6

399.2

19.6

0.22

396.1

399.2

3.1

1.089

HU-327

273.4

275.2

1.8

0.084

-

-

-

-

 

357.0

358.0

1.0

0.413

-

-

-

-

HU-328

361.0

362.0

1.0

0.146

-

-

-

-

 

396.9

397.8

0.9

0.151

-

-

-

-

HU-329

33.0

33.7

0.7

0.613

-

-

-

-

 

41.0

43.1

2.1

0.23

-

-

-

-

HU-330

344.5

345.2

0.7

0.443

-

-

-

-

HU-331

295.5

321.0

25.5

0.192

295.5

297.0

1.5

1.517

HU-332

265.0

268.0

3.0

0.096

-

-

-

-

 

277.4

278.0

0.6

0.198

-

-

-

-

 

138.0

140.2

2.2

0.077

-

-

-

-

HU-333

147.0

156.0

9.0

0.068

-

-

-

-

 

168.5

175.5

7.0

0.05

-

-

-

-

 

186.5

196.5

10.0

0.051

-

-

-

-

HU-334

185.0

188.0

3.0

0.06

-

-

-

-

HU-337

102.0

104.0

2.0

0.055

-

-

-

-

HU-339

45.4

46.4

1.0

0.354

-

-

-

-

HU-341

216.0

218.0

2.0

0.07

-

-

-

-

HU-343

203.7

208.0

4.3

0.134

-

-

-

-

 

223.0

225.0

2.0

0.059

-

-

-

-

HU-345

180.0

182.0

2.0

0.058

-

-

-

-

HU-347

107.0

109.0

2.0

0.118

-

-

-

-

 

180.0

185.0

5.0

0.064

-

-

-

-

HU-348

143.5

147.0

3.5

0.077

-

-

-

-

 

108.9

111.3

2.4

0.115

-

-

-

-

 

162.0

166.3

4.3

0.144

-

-

-

-

 

213.9

215.4

1.5

0.199

-

-

-

-

 

253.4

256.6

3.2

0.687

-

-

-

-

 

264.6

265.6

1.0

0.153

-

-

-

-

 

274.6

276.0

1.4

0.18

-

-

-

-

HU-349

303.0

308.6

5.6

0.183

-

-

-

-

 

332.6

334.9

2.3

0.053

-

-

-

-

 

348.0

349.0

1.0

0.108

-

-

-

-

 

355.0

356.8

1.8

0.244

-

-

-

-

 

372.5

376.0

3.5

0.061

-

-

-

-

 

387.0

390.0

3.0

0.196

-

-

-

-

 

433.0

438.0

5.0

0.076

-

-

-

-

 

476.0

503.0

27.0

0.068

-

-

-

-

 

56

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

HU-350

178.5

189.5

11.0

0.078

-

-

-

-

 

71.0

72.0

1.0

0.032

-

-

-

-

 

120.0

124.0

4.0

0.076

-

-

-

-

HU-361

133.0

136.0

3.0

0.107

-

-

-

-

 

133.4

135.5

2.1

0.14

-

-

-

-

 

220.5

223.0

2.5

0.034

-

-

-

-

HU-365

271.0

272.0

1.0

0.023

-

-

-

-

 

176.0

188.0

12.0

0.177

184.0

188.0

4.0

0.279

 

213.0

227.0

14.0

0.054

-

-

-

-

HU-368

232.0

233.0

1.0

0.123

-

-

-

-

 

240.0

245.0

5.0

0.182

-

-

-

-

 

259.5

263.0

3.5

0.072

-

-

-

-

HU-369

206.5

208.5

2.0

0.352

-

-

-

-

 

318.0

319.0

1.0

0.104

-

-

-

-

HU-370

332.0

364.0

32.0

0.098

-

-

-

-

 

332.5

340.0

7.5

0.199

-

-

-

-

 

273.5

285.0

11.5

0.055

-

-

-

-

HU-371

299.5

302.0

2.5

0.092

-

-

-

-

 

319.0

330.0

11.0

0.495

321.0

325.0

4.0

1.143

         

321.5

322.5

1.0

3.295

RU-001

84.0

88.8

4.8

0.13

-

-

-

-

 

114.8

170.0

55.2

0.09

-

-

-

-

 

89.3

91.5

2.2

0.8

-

-

-

-

 

106.4

106.8

0.4

2.13

-

-

-

-

 

124.9

139.5

14.6

0.08

-

-

-

-

RU-002

143.5

144.3

0.8

0.18

-

-

-

-

 

148.0

149.6

1.6

0.11

-

-

-

-

 

205.4

210.7

5.3

0.11

-

-

-

-

 

222.7

231.7

9.0

0.12

-

-

-

-

RU-003

197.8

218.0

20.2

0.1

-

-

-

-

 

107.0

134.0

27.0

0.16

109.2

113.0

3.8

0.49

RU-004        

130.0

133.5

3.5

0.39

 

138.0

140.0

2.0

0.07

-

-

-

-

RU-005

97.6

99.0

1.4

0.09

-

-

-

-

 

224.9

238.2

13.3

0.25

-

-

-

-

 

94.4

95.4

1.0

0.1

-

-

-

-

RU-007

111.0

117.0

6.0

0.12

-

-

-

-

 

220.4

224.2

3.8

0.08

-

-

-

-

 

232.0

236.6

4.6

0.11

-

-

-

-

RU-009

185.0

193.0

8.0

0.06

-

-

-

-

RU-010

151.3

158.3

7.0

0.11

-

-

-

-

 

63.2

64.2

1.0

0.13

-

-

-

-

RU-011

70.2

72.2

2.0

0.15

-

-

-

-

 

155.2

157.7

2.5

0.06

-

-

-

-

RU-012

104.9

150.5

45.6

0.09

117.2

117.8

0.6

1.8

 

200.0

228.5

28.5

0.08

-

-

-

-

 

191.2

193.2

2.0

0.06

-

-

-

-

RU-013

213.7

216.3

2.6

0.15

-

-

-

-

 

287.1

287.7

0.6

0.18

-

-

-

-

RU-014

129.0

134.6

5.6

0.45

-

-

-

-

 

192.0

194.0

2.0

0.12

-

-

-

-

 

78.2

79.0

0.8

0.22

-

-

-

-

 

95.0

95.6

0.6

0.19

-

-

-

-

 

100.6

136.8

36.2

0.09

-

-

-

-

RU-015

148.1

150.4

2.3

0.19

-

-

-

-

 

161.0

164.0

3.0

0.07

-

-

-

-

 

197.0

200.0

3.0

0.06

-

-

-

-

 

228.0

236.3

8.3

0.15

-

-

-

-

 

240.3

244.0

3.7

0.06

-

-

-

-

 

57

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

RU-016

163.2

165.1

1.9

0.24

-

-

-

-

RU-017

214.4

220.8

6.4

0.11

-

-

-

-

 

231.0

235.5

4.5

0.36

-

-

-

-

RU-018

79.7

81.4

1.7

0.13

-

-

-

-

 

104.9

105.9

1.0

0.1

-

-

-

-

RU-020

121.2

129.6

8.4

0.1

-

-

-

-

 

188.6

194.6

6.0

0.08

-

-

-

-

RU-021

193.0

194.0

1.0

0.56

-

-

-

-

 

199.0

200.0

1.0

0.1

-

-

-

-

 

150.4

156.0

5.6

0.11

-

-

-

-

RU-022

195.9

199.0

3.1

0.06

-

-

-

-

 

203.5

205.0

1.5

0.11

-

-

-

-

 

214.4

215.0

0.6

0.12

-

-

-

-

RU-023

222.0

226.1

4.1

0.51

225.3

226.1

0.8

1.73

 

95.7

97.2

1.5

0.06

-

-

-

-

RU-024

101.5

102.0

0.5

0.09

-

-

-

-

 

109.0

129.0

20.0

0.07

-

-

-

-

 

183.3

222.0

38.7

0.06

-

-

-

-

RU-025

151.4

185.0

33.6

0.1

152.1

152.9

0.8

0.99

 

226.6

231.5

4.9

0.15

-

-

-

-

 

116.8

122.0

5.2

2.98

118.5

120.0

1.5

7.99

RU-026        

119.5

120.0

0.5

19.45

 

134.5

138.0

3.5

0.1

-

-

-

-

 

151.0

152.0

1.0

0.18

-

-

-

-

 

73.2

73.4

0.2

0.96

-

-

-

-

RU-027

102.6

112.1

9.5

0.2

-

-

-

-

 

217.7

227.6

9.9

0.05

-

-

-

-

RU-028

219.5

221.5

2.0

0.06

-

-

-

-

RU-029

112.1

125.4

13.3

0.08

-

-

-

-

 

188.0

193.8

5.8

0.14

-

-

-

-

RU-030

87.5

90.0

2.5

0.13

-

-

-

-

 

136.4

136.7

0.3

0.67

-

-

-

-

RU-031

162.7

164.1

1.4

0.17

-

-

-

-

RU-032

184.5

186.0

1.5

0.84

-

-

-

-

RU-033

105.7

107.3

1.6

0.52

-

-

-

-

 

104.0

106.0

2.0

0.77

-

-

-

-

RU-035

151.5

153.1

1.6

0.08

-

-

-

-

 

195.2

199.1

3.9

0.08

-

-

-

-

 

218.0

219.0

1.0

0.13

-

-

-

-

 

106.5

113.0

6.5

0.15

-

-

-

-

RU-036

118.0

155.5

37.5

0.13

-

-

-

-

 

258.0

260.0

2.0

0.08

-

-

-

-

RU-037

97.4

103.5

6.1

0.18

-

-

-

-

 

132.0

135.0

3.0

0.07

-

-

-

-

 

121.5

122.5

1.0

0.17

-

-

-

-

RU-038

127.0

128.5

1.5

0.43

-

-

-

-

 

163.3

164.5

1.2

1.23

-

-

-

-

RU-039

93.2

97.8

4.6

0.14

-

-

-

-

RU-040

91.5

93.5

2.0

0.28

-

-

-

-

 

138.8

144.5

5.7

0.08

-

-

-

-

RU-041

197.7

199.0

1.3

0.64

-

-

-

-

 

212.0

218.8

6.8

0.09

-

-

-

-

 

58

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

108.5

112.5

4.0

0.07

-

-

-

-

 

120.5

121.5

1.0

0.11

-

-

-

-

RU-042

162.0

178.5

16.5

0.13

-

-

-

-

 

291.5

297.0

5.5

0.12

-

-

-

-

 

303.0

303.5

0.5

0.23

-

-

-

-

 

104.8

106.7

1.9

0.13

-

-

-

-

RU-043

213.6

221.3

7.7

0.43

-

-

-

-

 

214.1

216.6

2.8

0.76

-

-

-

-

RU-045

125.6

128.0

2.4

0.07

-

-

-

-

 

105.5

129.5

24.0

0.13

-

-

-

-

 

141.5

153.0

11.5

0.11

-

-

-

-

RU-047

184.0

187.5

3.5

0.46

-

-

-

-

 

254.0

256.0

2.0

0.15

-

-

-

-

 

266.0

273.0

7.0

0.09

-

-

-

-

 

113.5

151.5

38.0

0.18

-

-

-

-

RU-048

132.0

139.5

7.5

0.42

-

-

-

-

 

164.5

168.5

4.0

0.11

-

-

-

-

 

177.5

188.5

11.0

0.14

-

-

-

-

RU-051

95.3

96.3

1.0

0.2

-

-

-

-

 

111.3

121.3

10.0

0.34

118.1

120.1

2.0

0.9

RU-052

118.0

120.0

2.0

0.08

-

-

-

-

 

125.5

130.5

5.0

0.07

-

-

-

-

RU-054

252.5

257.4

4.9

0.17

-

-

-

-

RU-055

108.0

111.0

3.0

0.11

-

-

-

-

 

195.0

205.0

10.0

0.09

-

-

-

-

RU-056

218.0

224.0

6.0

0.09

-

-

-

-

RU-057

172.0

174.0

2.0

0.19

-

-

-

-

 

103.0

125.5

22.5

0.16

-

-

-

-

RU-058

143.0

147.0

4.0

0.09

-

-

-

-

 

167.0

189.5

22.5

0.07

-

-

-

-

 

71.0

71.5

0.5

0.36

-

-

-

-

RU-060

141.4

150.0

8.6

0.08

-

-

-

-

 

164.5

166.1

1.6

0.06

-

-

-

-

 

206.0

208.5

2.5

0.06

-

-

-

-

 

212.0

213.0

1.0

0.15

-

-

-

-

RU-063

231.7

234.6

2.9

0.05

-

-

-

-

 

242.7

243.6

0.9

0.12

-

-

-

-

 

246.0

253.0

7.0

0.08

-

-

-

-

 

139.1

140.5

1.4

0.1

-

-

-

-

 

142.6

143.9

1.3

0.08

-

-

-

-

RU-064

145.9

153.4

7.5

0.09

-

-

-

-

 

158.0

163.0

5.0

0.09

-

-

-

-

 

187.9

204.3

16.4

0.09

-

-

-

-

RU-065

209.0

213.0

4.0

0.09

-

-

-

-

 

218.7

223.0

4.3

0.1

-

-

-

-

RU-067

153.7

155.7

2.0

0.13

-

-

-

-

 

188.0

195.5

7.5

0.1

-

-

-

-

RU-068

108.0

130.2

22.2

0.09

-

-

-

-

 

207.2

210.0

2.8

0.07

-

-

-

-

RU-069

205.0

205.5

0.5

0.39

-

-

-

-

 

179.1

180.1

1.0

0.53

-

-

-

-

RU-070

194.5

199.2

4.7

0.11

-

-

-

-

 

225.5

226.7

1.2

0.21

-

-

-

-

 

63.0

64.0

1.0

0.54

-

-

-

-

 

113.0

114.0

1.0

0.2

-

-

-

-

RU-071

121.0

141.0

20.0

0.09

-

-

-

-

 

146.0

147.0

1.0

0.2

-

-

-

-

 

167.0

178.0

11.0

0.3

-

-

-

-

 

185.0

186.0

1.0

0.35

-

-

-

-

 

59

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

164.1

165.3

1.2

0.25

-

-

-

-

RU-072

182.5

186.4

3.9

0.12

-

-

-

-

 

192.5

194.2

1.7

0.23

-

-

-

-

RU-073

162.3

165.1

2.8

0.1

-

-

-

-

 

121.0

143.0

22.0

0.07

-

-

-

-

RU-075

160.0

161.0

1.0

0.19

-

-

-

-

 

169.0

184.5

15.5

0.09

-

-

-

-

 

268.3

269.0

0.7

0.19

-

-

-

-

 

62.7

64.0

1.3

0.08

-

-

-

-

RU-076

127.0

128.6

1.6

0.07

-

-

-

-

 

148.0

149.1

1.1

0.1

-

-

-

-

 

154.4

156.2

1.8

0.26

-

-

-

-

RU-077

93.0

101.0

8.0

0.21

-

-

-

-

RU-078

106.3

111.6

5.3

0.12

-

-

-

-

 

197.0

199.8

2.8

0.09

-

-

-

-

 

117.7

120.5

2.8

0.05

-

-

-

-

 

133.0

137.0

4.0

0.07

-

-

-

-

RU-079

141.8

144.5

2.7

0.09

-

-

-

-

 

160.0

169.0

9.0

0.07

-

-

-

-

 

188.0

196.0

8.0

0.07

-

-

-

-

 

223.0

225.0

2.0

0.12

-

-

-

-

RU-080

129.9

132.5

2.6

0.1

-

-

-

-

 

216.3

219.6

3.3

0.21

-

-

-

-

 

32.1

33.1

1.0

0.25

-

-

-

-

RU-081

110.4

113.6

3.2

0.17

-

-

-

-

 

129.5

133.5

4.0

0.07

-

-

-

-

RU-083

123.0

132.0

9.0

0.08

-

-

-

-

 

93.5

96.9

3.4

0.08

-

-

-

-

RU-084

102.0

109.8

7.8

0.05

-

-

-

-

 

127.9

128.9

1.0

0.1

-

-

-

-

 

157.2

165.3

8.1

0.22

-

-

-

-

 

98.0

111.5

13.5

0.17

-

-

-

-

RU-087

133.0

138.0

5.0

0.06

-

-

-

-

 

237.0

245.5

8.5

0.21

-

-

-

-

 

42.0

44.1

2.1

0.33

-

-

-

-

RU-090

68.6

69.1

0.5

0.16

-

-

-

-

 

120.4

122.7

2.3

0.36

-

-

-

-

 

131.6

132.7

1.1

0.27

-

-

-

-

 

152.5

167.0

14.5

0.1

-

-

-

-

RU-091

187.0

198.0

11.0

0.16

-

-

-

-

 

210.0

220.0

10.0

0.07

-

-

-

-

 

186.3

186.6

0.3

0.86

-

-

-

-

RU-092

194.0

198.3

4.3

0.39

-

-

-

-

 

209.4

212.6

3.2

0.09

-

-

-

-

 

217.6

222.3

4.7

0.08

-

-

-

-

RU-093

65.3

67.3

2.0

0.16

-

-

-

-

 

103.7

117.8

14.1

0.08

-

-

-

-

 

87.6

88.2

0.6

0.26

-

-

-

-

 

97.5

100.5

3.0

0.13

-

-

-

-

 

113.0

118.5

5.5

0.07

-

-

-

-

RU-094

125.0

126.5

1.5

0.08

-

-

-

-

 

137.0

146.5

9.5

0.1

-

-

-

-

 

227.0

228.5

1.5

0.07

-

-

-

-

 

241.0

245.0

4.0

0.09

-

-

-

-

 

260.0

263.0

3.0

0.09

-

-

-

-

 

60

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

117.0

154.3

37.3

0.38

120.4

129.8

9.4

0.82

RU-095

160.8

162.2

1.4

0.13

-

-

-

-

 

185.4

186.1

0.7

0.4

-

-

-

-

RU-096

183.0

185.0

2.0

0.16

-

-

-

-

 

188.0

191.0

3.0

0.06

-

-

-

-

RU-097

58.8

61.6

2.8

0.06

-

-

-

-

 

178.6

181.5

2.9

0.07

-

-

-

-

RU-098

93.9

95.2

1.3

0.18

-

-

-

-

 

124.4

125.0

0.6

0.17

-

-

-

-

RU-099

107.0

108.5

1.5

0.32

-

-

-

-

 

158.4

179.0

20.6

0.07

-

-

-

-

RU-100

89.7

92.5

2.8

0.05

-

-

-

-

 

234.3

241.8

7.5

0.07

-

-

-

-

 

117.5

125.0

7.5

0.15

-

-

-

-

RU-103

157.0

164.0

7.0

0.51

-

-

-

-

 

193.5

194.0

0.5

0.31

-

-

-

-

 

206.5

208.0

1.5

0.16

-

-

-

-

RU-104

79.0

80.9

1.9

1.04

-

-

-

-

RU-105

226.1

236.2

10.1

0.24

-

-

-

-

 

244.2

250.9

6.7

0.18

-

-

-

-

RU-109

131.7

143.0

11.3

0.31

-

-

-

-

RU-113

101.3

102.6

1.3

0.18

-

-

-

-

 

150.8

151.5

0.7

0.17

-

-

-

-

RU-115

226.0

231.2

5.2

0.14

-

-

-

-

 

254.0

258.7

4.7

0.19

-

-

-

-

RU-116

78.7

79.4

0.7

0.21

-

-

-

-

RU-118

117.1

136.9

19.8

0.52

-

-

-

-

 

151.9

153.2

1.3

0.08

-

-

-

-

 

159.9

165.7

5.8

0.08

-

-

-

-

RU-120

174.3

176.1

1.8

0.07

-

-

-

-

 

182.7

191.5

8.8

0.12

-

-

-

-

 

203.4

203.9

0.5

0.29

-

-

-

-

RU-121

308.2

315.2

7.0

0.06

-

-

-

-

RU-122

88.8

92.2

3.4

0.15

-

-

-

-

RU-123

129.1

133.8

4.7

0.11

-

-

-

-

 

280.6

304.0

23.4

0.08

-

-

-

-

 

143.3

146.0

2.7

0.07

-

-

-

-

RU-125

156.0

156.8

0.8

0.13

-

-

-

-

 

259.3

260.4

1.1

0.47

-

-

-

-

 

279.9

281.0

1.1

0.28

-

-

-

-

 

153.0

155.7

2.7

0.09

-

-

-

-

RU-126

170.9

178.0

7.1

0.09

-

-

-

-

 

313.0

314.0

1.0

0.11

-

-

-

-

 

271.0

272.8

1.8

0.07

-

-

-

-

 

275.4

279.7

4.3

0.15

-

-

-

-

RU-128

287.3

288.4

1.1

0.27

-

-

-

-

 

305.0

308.0

3.0

0.07

-

-

-

-

 

322.3

322.9

0.6

0.26

-

-

-

-

 

106.0

119.1

10.9

0.14

-

-

-

-

RU-130

136.7

137.2

0.5

1.29

-

-

-

-

 

144.6

149.0

4.4

0.16

-

-

-

-

RU-132

91.0

105.0

14.0

0.21

-

-

-

-

 

116.4

119.0

2.6

1.76

-

-

-

-

 

61

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

70.5

71.5

1.0

0.3

-

-

-

-

 

91.0

94.5

3.5

0.05

-

-

-

-

RU-135

99.5

100.5

1.0

0.17

-

-

-

-

 

123.0

131.0

8.0

0.15

-

-

-

-

 

145.0

150.0

5.0

0.05

-

-

-

-

 

144.0

147.0

3.0

0.06

-

-

-

-

RU-136

153.0

155.0

2.0

0.13

-

-

-

-

 

232.0

233.3

1.3

0.09

-

-

-

-

RU-138

198.9

200.6

1.7

0.11

-

-

-

-

 

70.0

74.0

4.0

0.64

-

-

-

-

RU-139

101.0

103.0

2.0

0.12

-

-

-

-

 

109.0

112.0

3.0

0.11

-

-

-

-

 

127.0

128.0

1.0

0.68

-

-

-

-

RU-141

80.0

88.0

8.0

0.08

-

-

-

-

RU-142

203.6

207.0

3.4

0.18

-

-

-

-

 

57.5

64.7

7.2

0.06

-

-

-

-

 

71.0

77.6

6.6

0.15

-

-

-

-

RU-143

87.0

94.2

7.2

0.07

-

-

-

-

 

99.0

103.8

4.8

0.05

-

-

-

-

 

208.8

233.3

24.5

0.21

-

-

-

-

RU-144

113.5

114.0

0.5

0.05

-

-

-

-

 

118.5

119.0

0.5

0.07

-

-

-

-

RU-146

106.5

108.0

1.5

0.09

-

-

-

-

 

132.0

134.0

2.0

0.71

-

-

-

-

RU-150

187.5

189.0

1.5

0.17

-

-

-

-

RU-152

209.5

210.5

1.0

0.12

-

-

-

-

RU-156

68.4

69.4

1.0

0.19

-

-

-

-

RU-157

115.0

139.1

24.1

0.24

-

-

-

-

RU-159

251.9

258.9

7.0

0.1

-

-

-

-

RU-160

110.0

119.0

9.0

0.05

-

-

-

-

 

232.3

237.3

5.0

0.133

-

-

-

-

RU-161

260.4

261.5

1.1

0.343

-

-

-

-

 

270.4

271.5

1.1

0.276

-

-

-

-

 

140.7

143.0

2.3

0.092

-

-

-

-

RU-162

221.3

223.0

1.7

0.103

-

-

-

-

 

231.7

234.0

2.3

0.748

-

-

-

-

RU-163

137.3

145.0

7.7

0.09

-

-

-

-

RU-164

115.8

121.2

5.4

0.222

-

-

-

-

 

132.0

133.5

1.5

0.065

-

-

-

-

 

296.2

298.0

1.8

0.06

-

-

-

-

RU-167

309.0

313.0

4.0

0.068

-

-

-

-

 

321.4

322.3

0.9

0.12

-

-

-

-

 

93.0

94.0

1.0

0.195

-

-

-

-

RU-168

102.0

103.0

1.0

0.115

-

-

-

-

 

252.5

253.5

1.0

0.098

-

-

-

-

 

275.8

282.4

6.6

0.166

275.8

276.1

0.3

2.24

 

163.0

169.2

6.2

0.191

-

-

-

-

RU-169

187.8

190.0

2.2

0.079

-

-

-

-

 

201.0

219.4

18.4

0.425

214.3

217.4

3.1

1.095

RU-170

188.8

190.7

1.9

0.098

-

-

-

-

 

204.4

205.4

1.0

0.105

-

-

-

-

 

149.0

151.0

2.0

0.072

-

-

-

-

RU-171

157.0

158.2

1.2

0.098

-

-

-

-

 

215.0

218.0

3.0

0.241

-

-

-

-

 

225.9

226.5

0.6

0.362

-

-

-

-

 

73.0

76.0

3.0

0.063

-

-

-

-

RU-172

88.0

111.0

23.0

0.141

-

-

-

-

 

209.0

217.0

8.0

0.083

-

-

-

-

 

62

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

96.5

98.0

1.5

0.117

-

-

-

-

RU-174

106.5

108.0

1.5

0.199

-

-

-

-

 

243.0

251.0

8.0

0.084

-

-

-

-

RU-175

144.7

174.7

30.0

0.108

-

-

-

-

RU-177

216.0

244.0

28.0

0.06

-

-

-

-

 

105.0

108.5

3.5

0.072

-

-

-

-

 

146.0

149.0

3.0

0.132

-

-

-

-

RU-179

171.0

194.0

23.0

0.169

-

-

-

-

 

221.0

228.0

7.0

0.298

-

-

-

-

 

240.0

243.5

3.5

0.074

-

-

-

-

RU-181

286.2

303.0

16.8

0.085

-

-

-

-

RU-182

185.0

187.0

2.0

0.078

-

-

-

-

 

212.4

223.0

10.6

0.066

-

-

-

-

 

173.5

174.5

1.0

0.11

-

-

-

-

RU-185

189.0

191.5

2.5

0.232

-

-

-

-

 

347.5

354.0

6.5

0.082

-

-

-

-

RU-186

134.5

138.5

4.0

0.046

-

-

-

-

 

63.8

75.0

11.2

0.212

63.8

68.1

4.3

0.483

 

99.0

114.0

15.0

0.087

-

-

-

-

RU-187

133.0

137.0

4.0

0.067

-

-

-

-

 

165.0

172.0

7.0

0.119

-

-

-

-

 

195.0

203.0

8.0

0.096

-

-

-

-

RU-189

165.4

167.0

1.6

0.277

-

-

-

-

RU-191

212.0

214.0

2.0

0.053

-

-

-

-

RU-192

123.5

127.0

3.5

0.147

-

-

-

-

 

158.5

183.5

25.0

0.12

-

-

-

-

RU-193

165.0

166.8

1.8

0.115

-

-

-

-

RU-194

225.0

227.0

2.0

0.122

-

-

-

-

 

258.0

260.5

2.5

0.046

-

-

-

-

 

145.0

146.0

1.0

0.204

-

-

-

-

RU-195

165.5

168.0

2.5

0.1

-

-

-

-

 

190.5

192.0

1.5

0.8

-

-

-

-

 

202.0

220.5

18.5

0.052

-

-

-

-

RU-197

132.0

144.0

12.0

0.138

-

-

-

-

 

206.0

208.0

2.0

0.215

-

-

-

-

RU-199

177.0

180.0

3.0

0.068

-

-

-

-

 

189.8

190.3

0.5

0.733

-

-

-

-

RU-200

311.0

315.8

4.8

0.081

-

-

-

-

RU-202

96.5

98.0

1.5

0.152

-

-

-

-

 

117.0

118.0

1.0

0.161

-

-

-

-

 

149.0

151.0

2.0

0.054

-

-

-

-

RU-206

232.2

242.5

10.3

0.228

233.4

237.1

3.7

0.474

 

295.5

300.0

4.5

0.12

-

-

-

-

RU-207

260.8

288.0

27.2

0.062

-

-

-

-

RU-209

153.0

155.0

2.0

0.059

-

-

-

-

 

228.5

231.5

3.0

0.075

-

-

-

-

 

163.0

164.0

1.0

0.695

-

-

-

-

RU-211

188.5

189.5

1.0

0.1

-

-

-

-

 

199.0

208.0

9.0

0.064

-

-

-

-

RU-213

109.3

116.0

6.7

0.038

-

-

-

-

 

220.5

221.0

0.5

0.364

-

-

-

-

RU-219

45.0

48.0

3.0

0.035

46.0

47.0

1.0

0.087

RU-225

179.5

180.5

1.0

0.061

-

-

-

-

 

183.4

192.6

9.2

0.062

187.2

191.6

4.4

0.107

 

63

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

RU-226

112.0

113.0

1.0

0.04

-

-

-

-

 

138.4

143.0

4.6

0.12

-

-

-

-

RU-228

116.5

117.5

1.0

0.119

-

-

-

-

 

156.0

158.5

2.5

0.081

-

-

-

-

RU-234

170.0

171.5

1.5

0.081

-

-

-

-

 

209.0

210.0

1.0

0.149

-

-

-

-

RU-237

217.6

218.9

1.3

1.053

-

-

-

-

RU-239

120.0

122.5

2.5

0.081

-

-

-

-

RU-243

108.0

125.5

17.5

0.274

111.0

114.5

3.5

0.631

 

 

 

 

 

118.5

121.6

3.1

0.761

RU-246 117.0 137.5 20.5 0.445

128.0

137.5

9.5

0.666

         

131.0

133.1

2.1

1.676

RU-248

127.9

145.5

17.6

0.414

141.5

145.0

3.5

0.937

RU-251

248.5

249.0

0.5

0.282

-

-

-

-

 

301.7

303.0

1.3

0.127

-

-

-

-

RU-252

181.0

184.0

3.0

1.492

-

-

-

-

 

96.0

114.5

18.5

0.119

104.3

107.5

3.2

0.579

RU-254

132.0

153.0

21.0

0.125

137.0

143.0

6.0

0.196

 

209.5

214.0

4.5

0.158

-

-

-

-

 

259.4

260.0

0.6

0.182

-

-

-

-

RU-255

293.8

294.5

0.7

0.159

-

-

-

-

RU-256

99.8

105.0

5.2

0.34

99.8

102.0

2.2

0.602

 

220.0

231.0

11.0

0.111

-

-

-

-

RU-260

238.0

249.0

11.0

0.23

243.0

249.0

6.0

0.383

 

254.0

257.5

3.5

0.055

-

-

-

-

RU-261

264.5

276.0

11.5

0.091

-

-

-

-

 

294.5

297.0

2.5

0.128

-

-

-

-

 

114.5

116.5

2.0

0.106

-

-

-

-

RU-262

126.5

136.0

9.5

0.05

-

-

-

-

 

269.0

284.0

15.0

0.128

-

-

-

-

 

282.5

284.0

1.5

0.838

-

-

-

-

RU-268

150.0

153.0

3.0

0.108

-

-

-

-

 

306.5

307.0

0.5

0.245

-

-

-

-

 

188.5

189.0

0.5

0.262

-

-

-

-

RU-272

279.0

286.6

7.6

0.125

-

-

-

-

 

297.0

301.0

4.0

0.073

-

-

-

-

 

88.5

92.5

4.0

0.063

-

-

-

-

RU-273

153.0

155.0

2.0

0.055

-

-

-

-

 

169.0

171.0

2.0

0.062

-

-

-

-

RU-274

106.5

115.0

8.5

0.049

-

-

-

-

 

202.0

214.0

12.0

0.06

-

-

-

-

RU-275

263.0

276.0

13.0

0.097

-

-

-

-

RU-276

211.5

225.0

13.5

0.226

211.5

214.0

2.5

0.552

         

223.0

225.0

2.0

0.812

RU-277

258.0

265.0

7.0

0.117

-

-

-

-

 

283.0

286.5

3.5

0.058

-

-

-

-

RU-279

82.0

106.0

24.0

0.206

86.5

92.5

6.0

0.37

         

101.0

106.0

5.0

0.345

RU-280

135.0

137.0

2.0

0.131

-

-

-

-

RU-281

64.5

66.0

1.5

1.538

65.0

65.5

0.5

3.26

 

176.0

178.0

2.0

0.108

-

-

-

-

RU-282

202.0

209.0

7.0

0.07

-

-

-

-

RV-001

115.1

118.8

3.7

0.181

-

-

-

-

RV-002

144.9

146.8

1.9

0.086

-

-

-

-

RV-004

236.7

238.4

1.7

0.109

-

-

-

-

RV-005

283.2

286.2

3.0

0.083

-

-

-

-

 

64

 

    Higher Grade Intervals Within Lower
Grades Intersections

Borehole
ID

From*

To*

Length*

%U3O8

From

To

Length

%U3O8

 

39.0

39.2

0.2

1.29

-

-

-

-

RV-006

45.9

46.2

0.3

0.64

-

-

-

-

 

105.4

106.0

0.6

0.219

-

-

-

-

 

72.8

74.6

1.8

0.079

-

-

-

-

RV-007

81.2

82.3

1.1

0.391

-

-

-

-

 

281.5

283.5

2.0

0.059

-

-

-

-

 

292.2

306.4

14.2

0.16

-

-

-

-

 

211.5

212.4

0.9

0.347

-

-

-

-

RV-008

216.5

218.0

1.5

0.137

-

-

-

-

 

235.6

239.5

3.9

0.084

-

-

-

-

RV-011

97.5

125.4

25.6

0.142

-

-

-

-

 

142.1

148.0

5.9

0.179

-

-

-

-

RV-012

131.8

133.4

1.6

0.132

-

-

-

-

 

150.8

151.7

0.9

0.197

-

-

-

-

RV-016

149.9

150.4

0.5

0.36

-

-

-

-

RV-017

177.3

178.7

1.4

0.14

-

-

-

-

 

200.1

200.6

0.5

1.27

-

-

-

-

RV-018

181.6

182.7

1.1

0.188

-

-

-

-

RV-019

224.0

236.2

12.2

0.187

-

-

-

-

RV-020

234.7

243.0

8.3

0.229

-

-

-

-

 

250.3

251.3

1.0

0.111

-

-

-

-

RV-021

273.2

279.1

5.9

0.101

-

-

-

-

RV-023

91.1

94.5

3.4

0.117

-

-

-

-

 

148.1

149.4

1.3

0.11

-

-

-

-

RV-024

169.6

171.1

1.5

0.138

-

-

-

-

 

185.0

192.0

7.0

0.274

-

-

-

-

 

203.3

207.2

3.9

0.262

-

-

-

-

 

114.9

116.6

1.7

0.217

-

-

-

-

RV-025

154.5

164.0

9.5

0.062

-

-

-

-

 

206.9

225.0

17.9

0.118

-

-

-

-

 

177.3

180.2

2.9

0.061

-

-

-

-

RV-026

197.7

200.5

2.8

0.25

-

-

-

-

 

215.7

224.0

8.3

0.126

-

-

-

-

 

238.0

255.4

17.4

0.13

-

-

-

-

RV-027

251.0

252.6

1.6

0.136

-

-

-

-

 

262.1

264.4

2.3

0.118

-

-

-

-

 

7.4

Core Handling, Drillhole Surveys and Logistical Considerations during the Mid-2009 – 2012 Drilling Programs

 

The summer 2009 drilling program in the Horseshoe and Raven areas were performed by Driftwood Diamond Drilling Ltd. of Smithers, B.C., Canada. The 2011 winter drill program was completed by Lantech Drilling Services Inc. of Dieppe, New Brunswick, while the summer program was completed by Graham Brothers Drilling Ltd (“Graham Brothers”), of Fosston, Saskatchewan. Drilling in the winter of 2012 was completed by Graham Brothers. Drill programs were typically run with two rigs operating on a full-time basis during the summer-fall (June to November) and winter (January to April) seasons.

 

All of the drilling during these programs has been with NQ size core (48 mm core diameter).

 

65

 

7.4.1

Drillhole Field Locations and Surveys

 

After completion of drilling, the drillhole collar locations are marked in the field with two metre high wooden pickets, which are visible in all seasons. The pickets are labelled with a permanent aluminum tag with the hole name, dip, azimuth and depth and clearly flagged with high visibility flagging tape.

 

Proposed hole collars are located in the field by chaining along grid lines from existing collars or located by a hand-held GPS unit. The proposed and completed collars are surveyed internally by UEX personnel with a hand-held Thales ProMark™3 GPS for preliminary interpretations. Independent checks have been completed on collar locations twice using Tri-City Surveys Ltd. (“Tri-City”), of Kindersley, Saskatchewan. Tri-City used a 5800/Trimble R8 Model 2 hand-held GPS with GNSS. Tri-City also relocated and surveyed the 2005 Cameco drillhole collars. The UEX and Tri-City collar readings are compared and, if any significant differences are noted, the Tri-City reading is re-surveyed; otherwise, it is adopted as the final collar reading.

 

Horseshoe and Raven were drilled on two separate, local project drilling grids. The Raven grid is rotated approximately 10° clockwise from the UTM WGS 84 (Zone 13) grid north and the Horseshoe grid is rotated approximately 35° anti-clockwise from the UTM WGS 84 (Zone 13) grid north. Surveying, however, is conducted in UTM grids.

 

LiDAR (Light Detection and Ranging), an optical remote sensing technology used primarily for typical digital terrain modelling (“DTM”), was flown over the Horseshoe-Raven and West Bear portions of the Hidden Bay property in August 2007, by LiDAR Services International of Calgary, Alberta. The LiDAR survey was performed to accurately determine the surface landforms in the Property areas and forms a cross check to the digital elevations of the surveyed drillhole collars. A surface DTM was created from the LiDAR and the collar locations were verified in Datamine. Drillhole collars with greater than one metre elevation difference were reviewed.

 

7.4.2

Downhole Surveys

 

Downhole surveys were routinely collected on all holes using the Reflex EZ-Shot® tool at approximately every 25 m to 50 m downhole spacing in the 2006-2009 drilling at Horseshoe and Raven and were also collected during the 2005 drilling program, which was managed by Cameco (Lemaitre and Herman, 2006). Reflex EZ- Shot® is an electronic single shot instrument that measures six parameters in one single shot reading azimuth, inclination, magnetic tool face angle, gravity roll angle, magnetic field strength and temperature. These readings are transcribed onto a paper ticket book. Azimuth was recorded in magnetic north and then adjusted to true north with a correction factor of 10.2° of current magnetic declination added to the measured azimuth. This data was then entered in the drill logging database, with corrections if required. On some occasions, the magnetic field was outside of tolerance, and in this case, the measurement was ignored. The error rate where the azimuth had to be removed was 0.57% of all surveys and 0.3% of surveys had transcription errors which were resolved by UEX. Data is exported from the drill logging database and then imported into Datamine, where the drillholes are viewed in plan and section for accuracy.

 

7.4.3

Drill Core Handling Procedures

 

At the drill rig, core is removed from the core barrel by the drillers and placed directly in wooden core boxes that are a standard 1.5 m long and a nominal 4.5 m capacity. Individual drill runs are identified with small wooden blocks, where the depth (metres) is recorded. Diamond drill core is transported at the end of each drill shift to an enclosed core-handling facility at the Raven camp on the Property. In general, the core handling procedures at the drill site are carried out to industry standard.

 

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7.4.4

Core Recovery

 

Every hole is measured from the start of the hole to the bottom to determine core recovery or block marking errors and for reference metre marks. Core recovery is determined by measuring the recovered core length and dividing this by the downhole drilled interval. Core loss is recorded routinely both on the core boxes and during core logging.

 

The QPs have reviewed core loss over all mineralized domains. Core recoveries through the mineralized subzones in the Horseshoe and Raven Deposits are generally very high, with 100% recovery common, even in mineralized intervals. Significant core loss has occurred mainly in the proximal non-mineralized clay alteration haloes to the deposit and in the oxidized zone below the overburden. Overall core recovery for the drillhole database is approximately 97%.

 

7.4.5

Drill Core Logging

 

All of the surface holes were geologically logged and sampled by UEX field personnel. All holes were logged in accordance with the UEX legend (Table 7‑4) and geological logging procedure. Geological logging includes the detailed recording of lithology, alteration, mineralization, structure, veining and core recovery. Upon completion of logging a hole, the data is reviewed on a set of working cross-sections for dynamic interpretation of the geology and mineralization. The logging was completed under the guidance of the site senior geologist at the time. Logging data was entered in digitally into Lagger 3D Exploration (“Lagger”), developed by North Face Software, on laptop computers. Lagger can enter and edit drillhole and sample data and has a custom library of UEX geological codes to standardize the logging legend (Table 7‑4).

Principal lithologic units in the Horseshoe and Raven area, QZIT, CARK, ARKQ, SPLO, AMPH and CALC are described in Section 6. Many other units listed below are present on the Hidden Bay property, but not in the vicinity of the deposits.

 

Table 74: UEX Lithology Legend

 

Codes

UEX name

Description

OB

Overburden

Overburden

CONG

Conglomerate

Conglomerate: maximum grain size >4mm

MDST

Mudstone

Mudstone

SDST

Sandstone

Sandstone: grain size 0.065-4 mm

SLST

Siltstone

Siltstone

UX

Uranium mineralization

Uranium mineralization

CLAY

Clay

Clay alteration: hydrothermal or paleoweathering, protolith uncertain

GOUG

Fault gouge

Fault gouge: unconsolidated cataclasite, clay matrix breccia, precurser lithology is unclear

LOST

Lost core

Lost core

AMPH

Amphibolite

>80% dark green to black amphibole; often massive to crudely banded.

ARKS

Meta-arkose

Massive to weakly foliated or weakly gneissic feldspar > quartz-rich meta-sandstone, with weak to undeveloped gneissic compositional layering. Generally lower biotite content than semipelites

ARKQ

Arkosic Quartzite

Arkosic Quartzite: >30% feldspar, finer grained, more easily altered than the QZIT, specific to Raven Horseshoe area

CALC

Calc-silicate gneiss

Compositionally layered) with amphibole-pyroxene +/- garnet and psammitic (meta-arkosic) layers; may contain dolomite

CARK

Calc-arkose

Arkosic rock with calc-silicate bands (where ARKS>CALC)

DIAB

Diabase

Fine grained mafic dykes with sharp contacts, equigranular, post-metamorphic

DIOR

Diorite

Mafic equigranular, usually medium-grained feldspar with biotite or amphibole-bearing intrusion; usually foliated

DOLO

Dolomite

Grey to cream or pink, usually banded to laminated dolomite-rich unit often with calc-silicate, graphite, or arkosic lamina

GABR

Gabbro

Mafic equigranular, usually medium-grained feldspar + pyroxene +/- amphibole-bearing intrusion; usually foliated

GRAN

Granite

K-feldspar-quartz-biotite granite, massive to foliated; usually medium grained, non-porphyritic; pink to grey

GRGN

Granitic gneiss

Impure granitic gneiss with foliated granitic and other compositional bands

PEGM

Pegmatite

Coarse-grained K-feldspar-quartz-biotite pegmatite; also inludes quartz-dominant pegmatites

PLAG

Plagioclasite

Albite-pyroxene +/- amphibole metasomatic unit after meta-arkose; may contain coarse pyroxene and resemble an intrusion; gradational contacts

PEL0

Pelitic gneiss or schist

Biotite quartz feldspar +/- garnet +/- sillimanite gneiss or schist (>50% biotite for schist) with >25% combined biotite, garnet, and/or sillimanite

PEL1

"

As above, 1-5% graphite

PEL2

"

As above, 5-20% graphite

PEL3

"

As above, >20% graphite

SPL0

Semi-pelitic gneiss

Biotite quartz feldspar gneiss with <25% combined biotite, garnet, sillimanite, often with abundant pegmatitic segregations

SPL1

"

As above, 1-5% graphite

SPL2

"

As above, 5-20% graphite

SPL3

"

As above, >20% graphite

PYRX

Pyroxenite

>80% pyroxene, up to 20% amphibole; often massive to crudely banded. Grains up to 1.5 cm in diameter.

QZIT

Quartzite

Pale grey to white, massive quartz rich meta-sandstone with >80% quartz, and subsidiary feldspar +/- biotite

QZPL

Quartz-rich pelite

Quartz-rich pelite

QV

Quartz Vein

Quartz vein >20cm (+ or - carbonate) NB: Clearly not pegmatoid related

 

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The primary purpose of a logging system is to provide a standard process for the geological logging procedures on the Hidden Bay exploration project.

 

The legend was developed to increase the amount and quality of geological data being collected and allow flexibility with data collection, so geologists can record all the information required without having to record one type of data at the expense of other data. The legend aims to simplify the interpretation of drillhole data and reduce the number of rock codes in the database to a manageable level.

 

The logging system is broken down into a series of tablets that are used to record the various forms of data required. These tablets include Lithology, Alteration/Paleoweathering, Veining/Structure and Veining/Structure Orientation Data. Each of the individual tablets is treated in isolation, such that geologists can refine the data being recorded depending on the types of geological data required for the specific task, e.g. resource definition, grade control and regional exploration.

 

A core reference library has been established on site and good communication between geologists allows for a consistent approach to geological logging. All core is routinely wet down and digitally photographed as a permanent record of the lithological history, in addition to the geological log, with a Canon Powershot A610 digital camera.

 

A review by the QPs of the Cameco logs and scissor holes of the 2005 Cameco drilling indicates that the geological information is complete and of good quality. The Cameco drillholes were logged using a similar legend under the guidance of Roger Lemaitre, P.Geo., from Cameco. Drillholes completed under the direction of Cameco in 2005 were also re-logged by UEX personnel in summer 2008 to standardize coding and logging data, to perform a second check on sampling intervals and to conduct infill sampling, where necessary.

 

7.4.6

Geotechnical Logging

 

All geotechnical logging was completed by, or under the supervision of, Golder personnel with the Saskatoon, Saskatchewan and Mississauga, Ontario offices. All selected holes were logged geotechnically in accordance with the UEX Geotechnical Protocol developed by Golder. A selection of holes were logged with RQD, which is the percent of total core length recovered in solid pieces greater than 10 cm in length that correlates with fracture density. Numerous holes were tested for intact rock strength using a rating system based on hammer blows, fracture count per run and detailed total core recovery.

 

During 2007 and 2008, Golder personnel came to the site and conducted intact rock strength measurements on HQ core using a point load testing machine. Throughout the drill seasons, Golder has also conducted detailed geotechnical assessments of drill core. Logging was completed using the Q rock mass rating system. The QPs have not reviewed the results of the Golder assessments and cannot provide an assessment of the quality assurance (“QA”)/quality control (“QC”) procedures or interpret the results of the Q rock mass rating results.

 

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In winter 2007/2008, Golder surveyed a series of holes in the Horseshoe area using a downhole televiewer. The aim of this was to determine geotechnical properties directly above the mineralized zones and around the peripheries of the deposit.

 

7.4.7

Radiometric Probing of Drillholes

 

Downhole radiometric probing (gamma logging) with in-hole probing instruments is a routine task undertaken on all holes drilled at the Horseshoe and Raven projects. In uranium exploration, probing is integral in accurately detecting gamma radiation downhole which directly correlates to mineralized zones, since these probes can quantitatively measure radioactivity caused by the atomic decay of uranium. Using in-house correlation formulas determined from comparing geochemical sampling with probe data, the concentration of uranium in situ can be determined. The probe data is used to determine a uranium equivalent intersection which is used for planning of follow-up drillholes and to correlate intervals in the core boxes to guide geochemical sampling. A detailed radiation measurement is taken every 10 cm downhole and 10 cm up hole by passing a probe continuously down the drillhole immediately after its completion and measuring in situ radioactivity.

 

The probes are calibrated before each drill program at the SRC’s test pit facility in Saskatoon, Saskatchewan. The probing equipment was tested using a known low-grade radioactive source in the field before and after the probing of each hole to ensure that the equipment was functioning properly before and after the in-hole probing occurs. The radiometric logging was performed using a Mount Sopris Model 4MXA/1000 500 m winch, or Model 4MXC/1000 1000 m winch and MGX II Model 5MCA/PMA digital encoder. A Mount Sopris Modified Triple Gamma Probe consisting of a 2SMA-1000 Sonic Modem section (#3460 or #3461) and 2GHF-1000 Triple Gamma Probe section (#3431 or #3458) was used to probe all holes. Data was acquired using MSLog Version 7.43, a Mount Sopris computer recovery program. Data from the probe is then used to correlate mineralized zones with the drill core and identify zones for sampling and geochemical assay. A second check is to scan the drill core with a hand-held SPP2 scintillometer or a RS-120/125 super scintillometer. Detailed radiometric measurements are taken every 10 cm on the core in mineralized zones and recorded on the core and in accordance with standard procedure. At times, there are some discrepancies with the downhole probe interval and the core due to stretch in the winch cable, the counter wheel icing up or a differing zero depth between the core and the probe data.

 

The detailed radiometric readings from the hand-held scintillometer on the drill core are used as a guide by the geologist for geochemical sampling. The geologist marks the intervals on the individual sample and the sample numbers and location are recorded in drill logs.

 

7.4.8

Relationship between Sample Length and True Thickness

 

Since the orientations of drillholes in the deposit vary, and the morphology of mineralized zones has variable orientation across the two deposits, the relationship of geochemical sample length in drillholes to the true thickness of mineralization is also variable. At both deposits, the steep orientation of most drillholes crosses the lens-shaped mineralized zones at or near to true thickness. The five metre to 30 m spaced drilling density, and geological confidence in the mineralization extent orientation and morphology has enabled 3D wireframe modelling of both deposits which accommodates for variations in sample length to local orientation of drillholes and mineralized zones.

 

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7.4.9

Hydrogeology

 

The Horseshoe and Raven Deposits are located adjacent to and east of the margin of the Athabasca Basin. The stratigraphy of the Athabasca Basin rocks consist of saturated sandstones, both from primary and secondary porosity and is a very porous aquifer. As the Property resides outside the Athabasca Basin, in crystalline metamorphic rocks, there is no anticipated hydrogeological concerns for mining identified at this time and is not considered material or relevant to the Property. As such, the QPs have not included the characterization of the hydrogeological environment in this TRS.

 

 

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8

SAMPLE PREPARATION, ANALYSES AND SECURITY

 

Due to the historical nature of the time period of when this data and information were collected, the QPs have reviewed the descriptions of procedures for sample collection, preparation, security and analyses for this Property as provided by UEX/UEC in the exploration reports, in conjunction with interviews of some of the personnel responsible for data collection and agree that the work was completed to industry standards. The QPs have checked these work descriptions against UEX’s assessment reports from 2009 and 2011 and have found them to be identical. The QPs are confident that the descriptions provided in this section are accurate for the time that the data was collected. Mr. Barsi and Mr. Hamel reviewed the geochemistry sample intervals from selected drillholes during their site visit in June of 2021, but given the number of holes drilled on the deposit it was not possible to review the sample intervals for all drill holes. No errors or inconsistencies were found during this review. Where appropriate, the authors have updated the sample totals for the data collected in the latter half of 2009 and all of 2011.

 

A review of the procedures (described below) of the sampling method and approach used by UEX at the time indicates that they are of an industry standard, and provide an acceptable basis for the geological interpretation of the deposits leading to the estimation of mineral resources and economic evaluation of the deposits.

 

8.1

Horseshoe and Raven Geochemical Sample Collection

 

Drill core sampling for geochemical assay is the primary sampling method. A combination of radiometric responses from hand-held scintillometer readings on drill core and recognition of visibly mineralized or altered areas guided sampling. Sampling has been conducted continuously across mineralized intervals within the mineralized zones. Samples were also collected from the non-mineralized core for at least several metres above and below mineralized intersections to confirm the location of the mineralization boundaries for each mineralized zone. In the case of multiple zones of mineralization in a hole, the internal non-mineralized section was generally sampled to provide a more continuous profile. In June 2008, UEX implemented a program of sampling weakly and non-mineralized core to clearly bracket mineralization with a nominal two metres of sampling below 0.02% U3O8 and any broad zones of internal waste were sampled. Re-sampling of holes was conducted at this time where previously sampled intervals were deemed too restricted in extent.

 

A representative length check on selective sample intervals was conducted on all of the HU and RU holes up until March 31, 2008. A total of 16,756 m of core was sampled representing 24,049 samples averaging 0.7 m in length. Sample intervals range from 0.1 m to 3.0 m with 261 samples or one percent of the total dataset greater or equal to 1.2 m in length. Note this excludes non-routine blanks and standards. Typically, the broader intervals were sampled over areas of low core recovery. An extra 1,635 samples, each approximately 10 cm in length, underwent spectral analysis with PIMA and were assayed with a full multi-element suite to spectrally and geochemically profile the alteration signature of the deposit. As of April 2009, the entire UEX drilled Horseshoe and Raven database includes 46,667 selective sample records and 3,002 systematic sample records (these numbers include routine standards and blanks). There have been 3,587 systematic sample records added to the database from July 2009 through 2011.

 

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After core logging, all drill core marked for sampling is split longitudinally to obtain a representative half core sample for geochemical analysis. Splitting of core samples was undertaken by employees of UEX at the Raven Camp. Samples are split dry and not cut, using an electric hydraulic press with a “knife” and “V-block”. The splitter and sample trays are vacuumed clean to prevent contamination between each sample. One-half of the core was placed in a clear plastic sample bag, the bag top is rolled down and then securely taped to prevent any sample loss. Once a sample is split and placed in a sample bag, an additional level of QC is introduced where the radioactivity of the sample is measured by a SPP-2 scintillometer. These samples are then placed in approved pails and then sent to SRC Geoanalytical Laboratory for assaying. The second half is retained for geological documentation and record purposes and remains in the core box. A sample tag with the sample number is stapled into the core box to mark the location of the sample interval. All mineralized sections are kept in permanent wooden racks for easy access and review. After each hole is sampled, the splitting tent is cleaned to prevent hole to hole contamination and to minimize the amount of background radiation from dust.

 

A small representative portion of drill core has had the second half of the core removed for specific gravity and dry bulk density testing and some intersections have been taken for detailed metallurgical testing. The three HQ holes were bulk sampled for metallurgical testing and, as a result, no remaining core is available.

 

No inherent sampling biases exist in the longitudinal splitting of the core and sample processes are consistent from season to season. It is the opinion of the QPs that the samples are of good quality, representative and no material factors that may have resulted in sample biases. The sample data has been verified through correlation of probe, detailed radiometric SPP2 readings and a detailed assay comparison and QA/QC program.

 

8.2

Drillhole Sampling Quality and Representativeness

 

The sampling methods and approach employed by UEX/UEC at the Horseshoe and Raven Deposits meet industry standards. The sampling of outlying targets was not reviewed by QPs but was carried out using the same protocols. There are no drilling, sampling, or recovery (core loss) factors that, in the opinion of the QPs, could materially impact the accuracy and reliability of the results. Sample locations and lengths are selected to appropriately represent mineralization distribution, with breaks between sample intervals made between obvious changes in geology or mineralization distribution. As a result, the sampling is considered to consistently represent the appropriate length and quantity of mineralization to determine a representative uranium grade independent of mineralization style.

 

All laboratory analyses of drilling samples for UEX, except for select check sampling, were conducted by the SRC. The SRC has an ISO/IEC 17025:2005 accredited quality management system (Scope of Accreditation #537), from the Standards Council of Canada (SRC, 2007). SRC’s Geoanalytical Laboratory is located at 125-15 Innovation Blvd., Saskatoon, Saskatchewan. The SRC laboratories are accredited by the Canadian Association for Laboratory Accreditation Inc. The SRC is independent of UEX or UEC.

 

Once the samples have arrived in Saskatoon, all elements of sample preparation are completed by employees of the SRC’s Geoanalytical lab. When samples arrive at the lab, no employee, officer, director, or associate of UEX/UEC, is or has been involved in any aspect of sample preparation and analysis. In the QPs’ opinion, the sample preparation, security and analytical procedures meet industry standards.

 

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8.3

Shipping and Security

 

Radioactive samples, mainly drill core, are shipped within Canada in compliance with pertinent federal regulations regarding their transport and handling. UEX has developed a procedure to detail requirements for exploration staff and others to ensure nuclear substances are shipped in compliance with regulatory requirements.

 

The transportation instructions are provided for the shipment of Dangerous Good Class 7, Radioactive Materials. Each shipment must meet all regulatory requirements of the Transportation of Dangerous Goods.

 

The samples are held in approved containers that are sealed with secure lids and meet the requirements of the CNSC Packaging and Transport of Nuclear Substances Regulations. Each shipping container is weighed and the level of the radioactivity is measured in compliance with the transportation of dangerous goods regulations to determine total activity of the container. The sealed shipping containers are temporarily stored outside the core shacks at the Raven Camps. Once a week, the shipment of radioactive samples is transported by road from the camp directly to SRC’s lab in Saskatoon. The pails are shipped in a closed vehicle under the exclusive use rules by our carrier, J.P. Enterprises Inc., based in La Ronge, Saskatchewan. In the authors’ opinion, there is little chance of tampering of samples as they are shipped directly to the lab from the camps.

 

8.4

Geochemical Analyses

 

8.4.1

Analytical Procedures

 

The resource data set uses U3O8 assay by ICPOES as the primary analytical method and ICP Total Digestion for lower grade samples (<1,000 parts per million (“ppm”) U).

 

On arrival at the SRC laboratory, all samples are received and sorted into their matrix types and received radioactivity levels. The samples are then dried overnight at 80°C in their original bags and then jaw crushed until 60% of the material is less than mm in size. A 100 g sub sample is split using a riffler, which is then ground (either puck and ring grinding mill or an agate grind) until 90% is minus 106 μm. The grinding mills are cleaned between sample using steel wool and compressed air, or in the case of clay rich samples, silica sand is used. The pulp is transferred to a labelled plastic snap top vial.

 

The samples are tested using validated procedures by trained personnel. All samples are digested prior to analysis by ICP and fluorimetry. All samples are subjected to multi-suite assay analysis, which includes U, Ni, Co, As, Pb by total and partial digestions. During initial phases of exploration, assaying using three separate digestions methods were tested: Boron, Partial and Total. In early winter 2007, routine analysis of Boron was discontinued. Boron analyses exist for 73 holes up to HU-053 and RU-020, and for drillholes completed during the 2005 program, which was managed by Cameco.

 

Total digestions are performed on an aliquot of sample pulp. The aliquot is digested to dryness on a hotplate in a Teflon beaker using a mixture of concentrated HF:HNO3:HClO4. The residue is dissolved in dilute HNO3 (SRC, 2007). Partial digestions are performed in an aliquot of sample pulp. The aliquot is digested in a mixture of concentrated HNO3: HCl in a hot water bath then diluted to 15 ml with DI water. Fluorimetry is used on low uranium samples (<100 ppm) as a comparison for ICPOES uranium results. Uranium is determined on the partial digestion. An aliquot of digestion solution is pipetted into a 90% Pt, 10% Rh dish and evaporated. A NaF/LiK pellet is placed on the dish, fused on a special propane rotary burner and then cooled to room temperature.

 

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The SRC Geoanalytical laboratory reports uranium values in ppm. In order to convert the uranium values to weight percent U3O8, the reported values were divided by a conversion factor of 10,000 and then multiplied by another conversion factor of 1.17924.

 

The reader is referred to the SRC’s website (http://www.src.sk.ca/) for more details regarding the analytical techniques and sample handling procedures.

 

8.4.2

SRC Geoanalytical Laboratories U3O8 Method Summary

 

All samples are received and entered into the Laboratory Information Management System (“LIMS”). In the case of uranium assay by ICPOES for UEX, a pulp is already generated from the first phase of preparation and assaying (discussed above). UEX routinely assays every sample above 1,000 ppm Uranium via ICP Total Digestion with ICPOES (Inductive Coupled Plasma – Optical Emission Spectrometry) Uranium assay. A 1,000 mg of sample is digested for one hour in an HCl: HNO3 acid solution. The totally digested sample solution is then made up to 100 ml and a 10-fold dilution is taken for the analysis by ICPOES. Instruments were calibrated using certified commercial solutions. The instruments used were Perkin Elmer Optima 300DV, Optima 4300DV or Optima 5300DV. The detection limit for U3O8 by this method is 0.001%. SRC management has developed QA procedures to ensure that all raw data generated in-house is properly documented, reported and stored to meet confidentiality requirements. All raw data is recorded on internally controlled data forms. Electronically generated data is calculated and stored on computers. All computer-generated data is backed up on a daily basis. Access to samples and raw data is restricted to authorized SRC Geoanalytical personnel at all times. All data is verified by key personnel prior to reporting results. Laboratory reports are generated using SRC’s LIMS.

 

8.4.3

Laboratory Audits

 

Two detailed laboratory audits were completed on the primary laboratory, SRC in Saskatoon, by UEX personnel. A laboratory audit was conducted on September 24, 2007, and a follow-up review on June 5, 2008. The laboratory audit covered all aspects of the sample preparation and analytical process. The review is documented with an appropriate action plan for non-compliance or suggested action items. SRC and UEX have established an open relationship where the external QA/QC program and their interpretation of the laboratory’s internal QC program are discussed on a regular basis.

 

8.5

Uranium Equivalent Grades

 

In late March 2009, logged mineralized intersections from two drillholes, which had not been sampled, were involved in a fire that destroyed the core splitting shack. The core, as per procedures, had been logged, photographed and had detailed SPP2-RS120/125 scintillometer radiometric readings collected every 10 cm on the core, prior to the incident. The drillholes had also been radiometrically probed.

 

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A total of 228 samples were lost from the Raven and Horseshoe areas. All HU-344 samples and a portion of HU-347 were lost for a total of 92 samples at Horseshoe Northeast. The majority of RU-205 samples and a portion of RU-197 were lost for a total of 136 samples lost at Raven West. RU-197 did not intersect any of the interpreted mineralized subzones. Probe grades indicate that these holes intersected lower grade portions of the deposits.

 

This TRS did not use equivalent probe grades for any of the lost holes in the resource calculation.

 

8.6

Dry Bulk Density Samples

 

In order to obtain bulk density estimates, UEX has taken a large selection of samples for dry bulk density measurement. These samples are systematically selected from different mineralized zones and a proportionately valid sample distribution of all rock types and alteration types, including different intensities of clay alteration.

 

Prior to September 1, 2008, a total of 2,615 samples from 33 holes underwent dry bulk density testing from Horseshoe and Raven. There were 1,845 samples from 33 Horseshoe (HU) holes and 770 samples from four Raven (RU) holes.

 

A further 1,109 samples, with a particular emphasis on the Raven Deposit, underwent dry bulk density testing during the period from September to June 2009, bringing the total number to 3,724 analyses. There are now results for 2,198 samples from 39 Horseshoe holes and 1,526 samples from 19 Raven holes with good spatial and lithological spread.

 

Average dry bulk density for Horseshoe and Raven lithologies is 2.48 g/cm3. The density statistics by rock type are listed in Table 8‑1 and Table 8‑2 for Horseshoe and Raven, respectively.

 

No further density sampling was completed past May 2009, as the current amount of information was sufficient for resource estimation.

 

Table 81: Horseshoe Bulk Density (g/cm3) Statistics Grouped by Lithology

 

HORSESHOE

Rock

Count

Mean

Median

Minimum

Maximum

ARKQ/S

1455

2.47

2.5

1.45

3.14

CARK

66

2.73

2.75

2.34

2.86

CLAY

12

1.88

1.78

1.33

2.45

DIAB/DIOR

14

2.71

2.73

2.27

2.85

GOUG

2

1.98

1.98

1.75

2.21

PEGM

94

2.37

2.41

1.89

2.65

PEL0

7

2.41

2.38

2.22

2.64

QZIT

450

2.53

2.55

2.02

2.83

SPL0

6

2.57

2.53

2.44

2.75

UX

92

2.49

2.49

1.75

2.95

Total

2198

2.48

2.52

1.33

3.14

 

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Table 82: Raven Bulk Density (g/cm3) Statistics Grouped by Lithology

 

RAVEN

Rock

Count

Mean

Median

Minimum

Maximum

ARKQ

301

2.43

2.51

1.11

2.64

BX

10

1.98

1.99

1.74

2.32

CARK

413

2.44

2.42

1.98

2.93

GRAN

17

2.32

2.4

1.64

2.58

PEGM

53

2.41

2.44

1.58

2.89

PEL0

61

2.56

2.62

1.92

2.76

QZIT

632

2.54

2.55

1.44

2.65

SPL0

39

2.50

2.5

2.24

2.67

Total

1526

2.48

2.53

1.11

2.93

 

8.6.1

Analytical Methods

 

Dry bulk density samples were collected from half-split core retained in the core box after geochemical sampling, since the dry bulk density process requires wax coating of the samples, which would affect the geochemical analysis. An approximately seven cm to 15 cm piece of half split core was submitted for each analysis. Samples were tagged and placed in sample bags on site, then shipped to SRC. Once received by SRC, samples are weighed dry and then covered in an impermeable barrier and then reweighed. The samples are then submersed in room temperature water and reweighed. The dry bulk density is calculated and reported.

 

As shown in Figure 8‑1 below, there is no correlation between grade and dry bulk density. The regression curve is flat. However, above 3% U3O8, there is a small inflection associated with a weak positive correlation between U3O8 grade dry bulk densities.

 

There is a strong negative correlation with logged proportions of clay in the core and bulk density. Table 8‑3 details the uranium grade ranges and specific gravity. Those samples not assayed for uranium are typically sitting distal to mineralization in less altered rock.

 

Table 83: Average Dry Bulk Densities (g/cm3) by Grade Bins

 

U3O8% Grade range

Number of samples

SG average

U3O8%average

Not assayed

539

2.58

Barren

Assay to 0.05%

1,885

2.47

0.02%

0.05% to 0.1%

385

2.47

0.07%

0.1% to 1%

770

2.45

0.33%

>1%

145

2.48

2.26%

TOTAL

3,724

2.48

0.21%

 

 

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image15.jpg

 

Figure 81: Logarithmic Plot of Dry Bulk Density versus Uranium Grade in Corresponding Geochemical Samples

 

SRC has conducted 170 repeat analyses whereby in each batch at least one sample is repeated in every 40 samples. The repeats for this period were completed at a ratio of one repeat to 14 routine samples. All repeats passed the internal QC limit of +/- 0.02 g/cm3. The sample repeats have a strong positive correlation for both the period prior to September 2008 (Figure 8‑2) and the period from September 2008 to June 2009 (Figure 8‑3).

 

image16.jpg

 

Figure 82: Quantile - Quantile Plot of Laboratory Bulk Density Replicated for Batches Submitted for all Seasons Prior to September 2008

 

 

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77

 

image17.jpg

 

Figure 83: Quantile - Quantile Plot of Laboratory Bulk Density Replicated for Batches Submitted between September 2008 and June 2009

 

As a check, prior to September 2008 a total of 52 samples, or one in 50, underwent wet bulk density measurements in parallel with dry bulk density measurement. The average wet density of the selected sample was 2.61 g/cm3 and the difference between the corresponding dry densities averaging 2.53 g/cm3 is 2.8%. One known standard, a piece of granite, was used for the wet density measurements and the three results were in the acceptable range of 2.71 g/cm3 +/- 0.01 g/cm3.

 

During the period from September 2008 to June 2009, a total of 51 samples, or one in 22, underwent wet density measurements in parallel with the dry bulk density measurement. The average wet density of the selected samples was 2.54 g/cm3 and the difference between the corresponding dry densities, which average 2.47 g/cm3, is 2.8%.

 

One known standard, a piece of granite, was used for the wet density measurements and the 11 results were in the acceptable range of 2.71 g/cm3 +/- 0.01 g/cm3.

 

8.7

Summary

 

All samples were prepared and analyzed at SRC, an ISO 17025 accredited laboratory. In the opinion of the QPs, the sample preparation, security and analytical procedures for all assay data meet industry standards for QC and QA and are adequate for use in mineral resource estimation.

 

 

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78

 

 

Table 84: Number of Samples for Each Deposit by Year

 

Horseshoe Sample Data

Year

Number of

Samples

Total Sample Length for Year

Percent of Total Data for Resource

1974

38

40.4

0.2

2005

866

394.68

3.6

2006

2031

1145.47

8.4

2007

11576

8252.43

48.1

2008

5051

4087.6

21.0

2009

3894

3662.3

16.2

2009

135

128.7

0.6

2011

472

361.6

2.0

Total

24063

18073.18

 

Raven Sample Data

Year

Number of

Samples

Total Sample Length for Year

Percent of Total Data for Resource

2005

1577

853.6

7.3

2007

4485

3366.55

20.9

2008

7305

5671.6

34.0

2009

5116

4619.83

23.8

2009

159

136.6

0.7

2011

2821

2433.3

13.1

Total

21463

17081.48

 

 

8.7.1

Verifications of Analytical Quality Control Data

 

As part of UEX’s quality improvement programs (“UEX Batch Acceptance Procedure”), a rigorous QA/QC program was implemented during the 2007 summer drilling program and continues to be followed. All drill core samples are submitted to the SRC laboratories in Saskatoon for geochemical analysis. Inserted into each drill core sample batch submitted to SRC are a total of 20 samples for analysis. 16 samples are sawed half-core drill samples and four QA samples, which include a blank, a duplicate and two standard samples. The standard samples inserted into each batch are a commercially available standard (certified reference material), a blank, a field duplicate and a round robin pulp. Results are documented in Table 8‑5 and Table 8‑6. Most drillholes at both the Horseshoe and Raven Deposits that were completed under the management of UEX have been completed under this program. Prior to the implementation of this program, only blank samples were submitted routinely throughout the 2006 and early 2007 drilling programs. Additional QA/QC samples have been taken from the drillholes that were drilled prior to the UEX Batch Acceptance Procedure being implemented to improve the confidence in the earlier sampling. SPP2 radiometric readings have also been compared to the geochemical assays and a good correlation was noted.

 

79

 

To the knowledge of QPs from UEX, the same QA samples implemented in 2007 continued to be followed during the summer 2009 and 2011 drilling programs. However, review of the sample information in the sample database collected during the 2009 through 2011 programs did not indicate which samples were field duplicates and standards. As a result, Table 8‑7 includes only lab inserted standards and duplicates and does not include the number of field duplicates.

 

Table 85: Summary of the Horseshoe and Raven QC Results for the Reporting Period 2005 to September 2008 (Baldwin, 2009)

 

QA/QC Sample

Number

Outside

Percentage Outside of
Tolerance

CG515 standard (ICP)

2016

0

0%

Blanks (ICP)

1033

6

0.60%

Field Duplicates

228

11

5% (outside of 30%)

Laboratory Replicates

1098

0

0%

Laboratory Replicates (ICPOES)

404

1

0.20%

BL-2 (ICP) standard

210

0

0%

BL-3 (ICP) standard

180

0

0%

BL-4 (ICP) standard

334

0

0%

BL-4A (ICP) standard

232

0

0%

UEX08 (ICP) standard

9

0

0%

BL-1 (ICPOES) standard

17

0

0%

BL-2 (ICPOES) standard

255

0

0%

BL-2A (ICPOES) standard

159

0

0%

BL-3 (ICPOES) standard

259

0

0%

BL-4 (ICPOES) standard

332

3

1%

BL-4A (ICPOES) standard

615

0

0%

BL-5 (ICPOES) standard

7

0

0%

ICP vs ICPOES assay

4,575

3

0.10%

 

 

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80

 

 

Table 86: Summary of the Horseshoe and Raven QC Results for the Reporting Period September 2008 to June 2009 (Baldwin, 2009)

 

QA/QC Sample

Number

Outside

Percentage Outside of
Tolerance

CG515 standard (ICP)

879

0

0%

Blanks (ICP)

261

1

0.40%

Field Duplicates

30

3

10% (outside of 30%

Lab Replicates (ICP)

516

0

0%

Lab Replicates (ICPOES)

116

0

0%

BL-2 (ICP) standard

5

0

0%

BL-4A (ICP) standard

520

1

0.20%

UEX08 (ICP) standard

516

5

1.00%

BL-2 (ICPOES) standard

16

0

0%

BL-2A (ICPOES) standard

25

0

0%

BL-3 (ICPOES) standard

6

0

0%

BL-4A (ICPOES) standard

251

0

0%

UEX08 (ICPOES) standard

144

1

0.70%

ICP vs ICPOES assay

696

4

0.6% (outside 10%

 

In all cases, results outside of acceptable limits have been followed up through checking results from the batch with the laboratory or having the analysis repeated. In the case of the error repeating, the core was re-split and the new sample submitted for analysis.

 

Analysis of standards for the period from 2005 to September 2008 indicates that results were acceptable (within three standard deviations from the mean) for 100% of 965 standards submitted via U ppm ICP Total Digestion and 1,641 or 99.8% of the 1,644 standards submitted via the ICPOES U3O8 assay technique. Assay comparisons between three different assay techniques revealed a strong positive correlation for U ppm and U3O8.

 

Analysis of standards for the period from September 2008 to June 2009 indicates that results were acceptable (within three standard deviations from the mean) for 1913 or 99.6% of 1,920 standards submitted via U ppm ICP Total Digestion and 441 of the 442 standards submitted via the ICPOES U3O8 assay technique. Assay comparison between different assay techniques revealed a strong positive correlation for U ppm and U3O8.

 

Laboratory replicates correspond to a pulp analyzed in replicate as part of the laboratory’s internal QC measures to ensure reproducibility of assay results over time. Replicates also serve as a validation tool for batches with identified problems in either standards or blanks. The laboratory replicates are found to be in acceptable limits with a correlation coefficient close to one (R2> 0.999) and have very low dispersion for ICP and ICPOES analytical techniques.

 

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Table 87: Summary of Horseshoe and Raven QC Results for the Reporting Period July 2009 to 2011

 

QA/QC Sample

Number

Outside

Percentage Outside of
Tolerance

Lab (ICP) Replicates

160

0

0%

Lab (ICPOES) Replicates

58

0

0%

CG515 (ICP) Standard

23

0

0%

CAR110 (ICP) Standard

223

0

0%

BL-2 (ICP) Standard

13

9*

1.7%

BL-2 (ICPOES) Standard

14

0

0%

BL-2A (ICPOES) Standard

13

0

0%

BL-3 (ICP) Standard

3

0

0%

BL-3 (ICPOES) Standard

20

0

0%

BL-4A (ICP) Standard

34

0

0%

BL-4A (ICPOES) Standard

55

0

0%

UEX08 (ICP) Standard

49

0

0%

UEX08 (ICPOES) Standard

49

0

0%

 

*One standard was outside of the tolerance limits by 1.7% the rest were less than 1%.

 

image18.jpg

 

Figure 84: Control Chart for Reference Material CG51509* analyzed for Uranium at SRC

 

*The lower limit for this standard in the QC data information is less than two. In order to plot the data, the lower limit was changed to 0.5 and samples that returned values of less than two were changed to 1.5.

 

82

 

image19.jpg

 

Figure 85: Control Chart for Reference Material CAR110 analyzed for Uranium at SRC

 

image20.jpg

 

Figure 86: Control Chart for Reference Material BL-2a analyzed for %U3O8 at SRC

 

83

 

image21.jpg

 

Figure 87: Control Chart for Reference Material BL-3* analyzed for Uranium and %U3O8 at SRC

 

*Uranium Total values were converted to %U3O8 and plotted on the same graph.

 

image22.jpg

 

Figure 88: Control Chart for Reference Material BL-4a* analyzed for Uranium and %U3O8 at SRC

 

*Uranium Total values were converted to %U3O8 and plotted on the same graph.

 

84

 

image23.jpg

 

Figure 89: Control Chart for Reference Material UEX08* analyzed for Uranium and %U3O8 at SRC

 

*Uranium Total values were converted to %U3O8 and plotted on the same graph.

 

image24.jpg

 

Figure 810: Control Chart for Reference Material UEX02* analyzed for Uranium and %U3O8 at SRC

 

*Uranium Total values were converted to %U3O8 and plotted on the same graph.

 

85

 

 

Analysis of standards for the period July 2009 to 2011 indicates that results were acceptable (within three standard deviations from the mean) for 335 or 98% of 345 standards submitted via U ppm ICP Total Digestion and 151 of the 151 standards submitted via the ICPOES U3O8 assay technique (Figure 8‑4, Figure 8‑5, Figure 8‑6, Figure 8‑7, Figure 8‑8, Figure 8‑9, & Figure 8‑10).

 

The laboratory replicates are found to be in acceptable limits with a correlation coefficient close to one (R2 > 0.999) and have very low dispersion for ICP and ICPOES analytical techniques (Figure 8‑11, Figure 8‑12, Figure 8‑13, & Figure 8‑14).

 

Upon review of the geochemical sampling for mid-2009 and all of 2011, UEX was unable to discern which samples were the field duplicates. This is likely due to the fact that the database from that period which stored all the Horseshoe and Raven data did not specifically and discretely identify field duplicates and no current staff at UEX was able to use that database to separate out field duplicates. UEX also investigated the 2009 and 2011 assessment reports for this data, and it was not reported separately there either. The QPs are confident that the field duplicates were collected between 2009 and 2011 after having conversations with a geotechnician who split the samples and was responsible for running the sample shack, though his knowledge of the database is negligible.

 

86

 

image25.jpg

 

Figure 811: XY Chart for Lab Replicates Analyzed for Uranium at SRC 2009

 

image26.jpg

 

Figure 812: RPD Chart for Lab Replicates Analyzed for Uranium at SRC 2009

 

87

 

image27.jpg

 

Figure 813: XY Chart for Lab Replicates Analyzed for Uranium SRC 2011

 

image28.jpg

 

Figure 814: RPD Chart for Lab Replicates Analyzed for Uranium SRC 2011

 

 

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88

 

9

DATA VERIFICATION

 

9.1

Qualified Person Data Verification

 

In order to verify that the data in the historical UEX database was acceptable for the Horseshoe and Raven Mineral Resource Estimates, the QPs reviewed the data from logging through to the final database. The assay data file from the database was checked against the Golder assay database from 2009 by randomly selecting drillholes and comparing results. No differences were found from the current assay database and the 2009 database. The recent historical drilling was checked against the assay files obtained from SRC, UEX’s primary laboratory. The data verification was carried out by Nathan Barsi (P.Geo.) with assistance from Chris Hamel (P.Geo.) and Susan Biss (P.Geo.), UEX’s Land and Geodatabase Administrator.

 

In the database, there are a total of 715 drillholes: 404 for Horseshoe and 311 for Raven. This includes 96 new drillholes, which have been added to the database since the completion of the previous estimates for Horseshoe and Raven in July 2009. These include 28 drillholes in Horseshoe and 68 drillholes in Raven drilled in summer 2009 and 2011. The QPs are confident that the assays database is up to date and correct.

 

9.2

Database Verification

 

Exploration work completed by UEX between 2005 and 2012 was conducted using documented procedures and protocols involving extensive exploration data verifications and validation. During drilling, experienced UEX geologists implemented industry standard best practices designed to ensure the reliability and trustworthiness of the exploration data.

 

UEX monitored the analytical QC data on a regular basis. Failures of QC samples were investigated, and appropriate actions taken, including re-assaying of samples within batches containing a failure. Results from re-assayed batches replace the original assay of the failed batch.

 

Data verification was carried out on the resource estimation database, along with data and information from the drilling programs, radiometric probing of the drillholes, geological logging information, core recovery and sampling and the geochemical database. This consisted of verifying for selected holes that:

 

 

Drillhole ID is unique.

 

 

Sample ID is unique.

 

 

Individual drillhole records must all be related to one unique Hole ID.

 

 

Data intervals do not overlap in space.

 

 

Selective core intervals were checked and corroborated against drillhole logging.

 

 

Sample intervals do not extend past the end of hole depth.

 

 

Downhole radiometric probing data correlate in space and pattern with scintillometer data.

 

 

End of hole depth is consistent with drill log information.

 

 

Core photos exist and corroborate the drillhole logging.

 

 

Drilling date, hole size, and casing length are consistent with the drill logs.

 

89

 

UEX staff members (Chris Hamel, P.Geo., Nathan Barsi, P.Geo. and Susan Biss., P.Geo.) carried out the database audit and adjustments. Audits on collar, collar survey, downhole survey, casing, core recovery, density, geochemistry, sample measurements, geology, alteration and structure data were carried out. Inconsistencies and errors in the database were verified and corrected. A random selection of drillholes were resurveyed during the site visit to ensure accuracy. No errors were found by the QPs during a review of this database.

 

9.3

Logging and Sampling Procedure Review

 

During the QPs site visit, the logging and sampling procedure were reviewed against the historical drill logs and were found to be consistent as those described in Section 7.

 

9.4

Collar Position

 

During the QPs site visit, four drillhole collars were surveyed using Trimble R12 equipment by Mr. Hamel. The surveys were taken when the GPS indicated a minimum of one metre accuracy. The QP’s surveys were then compared to the collar positions in the UEX database. No significant differences were found between the survey collar positions provided by UEX and the GPS surveys complete by the QPs (Table 9‑1).

 

Table 91: Raven Collars, Comparison between QP's GPS and UEX Database

 

BHID

2021 Survey

Original

Difference

 

Y

X

Z

Y

X

Z

Y

X

Z

RU-053

6446314.8

572964.7

442.1

6446311.9

572967.3

441.0

2.8

-2.6

1.1

RU-079,-083

6446315.1

572913.0

446.8

6446313.6

572914.3

446.0

1.5

-1.4

0.8

RU-111,-112

6446382.8

572888.9

450.3

6446382.8

572887.7

450.0

0.0

1.2

0.3

RU-272

6446278.7

572868.6

444.2

6446277.3

572870.3

444.0

1.4

-1.6

0.2

 

9.4.1

Downhole Surveys, Collar and Lithology Review

 

Prior to conducting the mineral resource estimate, the downhole survey and lithology data were checked against the original survey files and logs and against the 2009 database used for the previous estimates. The QPs checked the validity of the modelling database against the digital lithology log sheets and downhole survey data supplied that existed in the previous resource estimate. No errors were noted in the new data and the minor differences between the old and new databases were due to updated information. The QPs exported all data from the UEX database and found it to be the same as the 2009 database by conducting spot checks of the current database against the 2009 database. Visual checks of the drillhole traces were completed in 3D. The new database was used in the resource estimation contained in this TRS.

 

In-hole downhole surveys for the UEX Horseshoe and Raven drillholes included dip and azimuth readings obtained from a Reflex EZ-Shot® downhole survey tool. The digital readings from this instrument are recorded on paper logs and corrected to true north prior to input into the database.

 

During the verification for the previous estimates a total of 1,208 entries in the survey data file were checked against the paper logs. No errors were found in the new drillhole database since the errors were corrected in 2009.

 

No significant discrepancies were noted in lithologies when comparing the core to the drill logs during the site visits.

 

90

 

The July 2009 downhole survey data from UEX database was checked against the original survey file by randomly selecting five holes from Horseshoe and three from Raven. The verification of survey data was conducted by visual checking of the database against original documents. The QPs visually compared the drillhole traces that were constructed in 3D, with the current database against the 2009 database and no discrepancies were found.

 

The lithology data from UEX database was checked against original log by randomly selecting three drillholes at Horseshoe and three at Raven. No errors were found.

 

9.5

Assay and Bulk Densities Databases

 

The assay and bulk densities databases were rigorously checked in the 2009 resource report by Palmer and Fielder. All samples were cross checked with the original assay certificates from the lab. They were found to be appropriate for use in mineral resource estimation. This database was ‘locked in time’ by the previous resource estimate. Mr. Barsi compiled a current assay and densities database and checked it against the 2009 database and found no differences, except for the addition of the new assay data from mid-2009 and 2011. There were no additional density measurements added to the database.

 

The QPs checked the 2009 and 2011 data against the original SRC assay results sheets and found no differences.

 

Since no additional bulk density data was collect past the July 2009 resource report, the QPs are satisfied with this data set and for its use in resource estimation.

 

9.6

Independent Samples

 

The QPs have independently verified the findings of the independent samples taken by Golder by reviewing the original assay values and the assay values obtained by Golder. The QPs agree with Golder’s summary below.

During the site visits in 2007 and 2008, a total of 15 samples were collected from the remaining half core for Horseshoe and Raven and submitted to SRC for assay analysis. These samples are to provide an independent verification of U3O8, mineralization on the Horseshoe and Raven Deposits. Each sample was analyzed by total digestion ICP Analysis. The assay values for the Golder samples compared to the UEX original samples are provided in Table 9‑2. Differences in the assay’s values are probably due to the sample size difference between the Golder samples and the UEX samples. The Golder samples for Horseshoe and Raven were between seven cm and 16 cm in length, whereas the UEX samples average was 70 cm. The samples do confirm the presence of U3O8, mineralization at Horseshoe and Raven deposits.

 

91

 

 

Table 92: Independent Samples taken by Golder at Horseshoe and Raven

 

Golder

Original

Sample Id

U3O8 (%)

Sample Id

U3O8 (%)

G79037

0.100

87855

2.110

G79038

0.933

65068

0.348

G79040

0.295

69154

0.395

G79041

1.438

62657

0.520

G79042

4.339

89598

7.600

G019190

1.179

2007-901

0.528

G019191

5.742

G-2008-111

1.650

G019192

2.334

G-2008-145

1.880

G019193

2.134

G-2008-73

1.860

G019194

0.011

2007-1964

0.015

G019195

0.947

2007-1404

0.849

G013038

0.971

2007-1826

0.977

G013039

0.004

2007-1826

0.015

G013040

0.002

2007-397

0.002

G013041

6.732

2007-227

1.780

G013042

0.498

2007-1961

0.238

 

9.7

Conclusion

 

The QPs verification indicates that the logging, sampling, shipping, sample security assessment, analytical procedures, inter-laboratory assay validation and validation by different techniques are comparable to industry standard practices.

 

The QPs recommend an additional check assay sampling program be instituted should the Company implement the recommendation to conduct an updated IA with an economic analysis that would increase the number of check assays for a higher degree of confidence in the summer 2009 and 2011 assay data. It is important to note that these holes were all infill holes and returned values that were within expected ranges for the mineralization that was being confirmed with closer spaced drill centres. The summer 2009 and 2011 data only represent 7.88% of the total assay sample population. Completing these check assays will eliminate future but very minor QA/QC concerns over this subpopulation of assays.

 

The databases are considered acceptable for Mineral Resource estimation of the Horseshoe and Raven Deposits.

 

9.8

QP Comments

 

In the opinion of the QPs, the sample collection, preparation, security, and analytical procedures for all assay data for the historical data and the summer 2009 and 2011 drill programs comply with industry standards and are adequate to support mineral resource estimation. This data has been compiled in one current database. The QPs believe that the samples were collected properly, are representative of the material intersected in the holes and hence are representative of the Horseshoe and Raven deposits and can be used to estimate mineral resources in this Technical Report.

 

A review of the QA/QC program and results by the QPs indicate that the program meets industry standards and the data is sufficient for resource estimation.

 

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10

MINERAL PROCESSING AND METALLURGICAL TESTING

 

Metallurgical test work was completed on the Horseshoe and Raven deposits between 2006 and 2009. The details and analysis of the completed work outlined in this section was provided to the QPs by the Company and is found in:

 

Palmer, K., and Fielder, B., 2009. Technical Report on the Hidden Bay Property, Saskatchewan, Canada, Including Updated Mineral Resource Estimates for Horseshoe and Raven Deposits. Report by Golder Associates Ltd to UEX.

 

Doerksen, G., Melis, L., Liskowich, M., Murphy, B., Palmer, K., and Pilotto, D., 2011. Preliminary Assessment Technical Report on the Horseshoe and Raven Deposits, Hidden Bay Project Saskatchewan, Canada. Report by SRK Consulting (Canada) Inc. to UEX.

 

A summary of the metallurgical work reported in the Doerksen et al (2011) is found below.

 

Metallurgical testing for UEX’s Hidden Bay project included test work on the Horseshoe-Raven deposits. Test work, completed at SGS Canada Inc.’s Lakefield Research facility in Lakefield, Ontario (SGS Lakefield) under the direction of Melis Engineering Ltd., was completed in 2009 on Horseshoe-Raven mineralization. The SGS Canada Lakefield Research facility is recognized across the mining industry as a global leader in metallurgical analysis.

 

Based on supporting metallurgical test work, process recoveries are estimated to be 95%.

 

Horseshoe-Raven test composites were prepared from assay rejects and from purpose-drilled HQ core. The elemental analyses of the composites showed that the Horseshoe and Raven uranium deposits are relatively low in deleterious elements such as arsenic, molybdenum, selenium and base metals. Five uranium carriers were identified, uraninite, boltwoodite, uranophane, coffinite and minor amounts of carnotite.

 

The Horseshoe-Raven composites were categorized as medium in hardness from the perspective of SAG milling, with an average SPI value of 69 minutes. The ball mill Bond Work Indices were all within a tight range of 16.1 to 17.7 kWh/t with an average value of 16.7 kWh/t, showing very little variation across the deposits and characterizing the Horseshoe-Raven mineralization as moderately hard for ball mill grinding.

 

Leach test results confirmed the Horseshoe-Raven mineralization is easily leached under relatively mild atmospheric leach conditions. Leach extractions of 98% or greater can be achieved for the Horseshoe and Raven mineralization under atmospheric leach conditions using a mesh-of-grind K80 (80% passing size) of approximately 145 µm, a leach temperature of 50ºC, a free acid concentration of 10 g H2SO4/L, representing an acid consumption of 45 kg H2SO4/t, an ORP of 500 mV, representing a sodium chlorate consumption of 0.6 kg NaClO3/t, and a leach retention time of eight to 12 hours. An overall uranium recovery of 95% was used in this study for all the cash flow analysis. Mine optimization work used 96% uranium extraction, prior to finalization of the recovery estimate.

 

93

 

 

The pregnant leach solution and residue from a Horseshoe bulk leach test were retained to generate waste raffinate and leach residue for waste treatment testing. The specific gravity of the generated tailings was measured at 2.59 t/m3. The tailings K80 was 136 µm and the K50 (50% passing size) was 54 µm.

 

Tailings supernatant aging tests resulted in elevated levels of radium and molybdenum in the supernatant. This was expected, and confirms that, like all uranium tailings supernatant, excess tailings water would be re-used and/or treated in the mill process and waste treatment circuits under normal operating conditions.

 

The concentrations of uranium (0.015 mg/L), arsenic (0.0067 mg/L), molybdenum (0.0115 mg/L), radium 226 (0.02 Bq/L) and selenium (0.009 mg/L) obtained in treated effluent are below typical regulatory limits set by the provincial and federal governments.

 

This TRS assumes that run of mine (“ROM”) material will be trucked to the Rabbit Lake processing facility for treatment. It is assumed that a toll treatment agreement could be reached with Cameco, the owner of the Rabbit Lake plant, which would allow Hidden Bay mineralization to be processed at an average rate of 1,000 tpd. It is also assumed that the Rabbit Lake facility would provide toll tailings deposition for the Hidden Bay ROM material.

 

 

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94

 

11

MINERAL RESOURCE ESTIMATE

 

11.1

Introduction

 

The Mineral Resource Estimate presented herein represents the first mineral resource evaluation prepared for the Horseshoe and Raven Deposits in accordance with S-K 1300.

 

Prior to UEC’s acquisition of UEX, the uranium deposits on the Property had previous resource estimates completed in accordance with Canadian National Instrument 43-101 requirements, as UEX was previously governed by Canadian regulations. UEC will not be disclosing those previous estimates in the TRS, as they did not comply with S-K 1300.

 

The mineral resource model prepared in this TRS by the QPs considers 404 core boreholes (128,180 m) drilled by UEX during the period of 2005 through 2009, and 2011 for the Horseshoe deposit and 311 core boreholes (82,205 m) for the Raven Deposit. The resource estimation work was completed by Mr. Nathan Barsi, P.Geo. (APEGS # 15012) under the supervision of Mr. Roger Lemaitre P.Eng., P.Geo. (APEGS #10647) who is an appropriate QP as this term is defined in S-K 1300. The effective date of the Mineral Resource Statement is October 31, 2021.

 

This section describes the resource estimation methodology and summarizes the key assumptions considered by the QPs. In the opinion of the QPs, the resource evaluation reported herein is a reasonable representation of the global uranium mineralization found at the Horseshoe and Raven Deposits at the current level of sampling. The mineral resources were estimated in conformity with the CRIRSCO classification criteria for an Indicated Mineral Resource and the requirements of S-K 1300. Mineral resources are not mineral reserves and have not demonstrated economic viability. There is no certainty that all or any part of the mineral resource will be converted into mineral reserve.

 

The database used to estimate the Horseshoe and Raven mineral resources consists of all the drill data compiled by UEX up to the end of the 2012. This database has been validated by the QPs. The QPs are of the opinion that the current drilling information is sufficiently reliable to interpret with confidence the boundaries for uranium mineralization and that the assay data is sufficiently reliable to support mineral resource estimation.

 

Datamine Studio RM software was used to construct the geological solids, prepare assay data for geostatistical analysis, construct the block model, estimate metal grades and tabulate mineral resources. Microsoft Excel was used for geostatistical analysis.

 

11.2

Mineral Resource Estimation Methodology

 

The mineral resources reported herein were estimated using an inverse-distance squared interpolated block modelling approach informed from core borehole data constrained within uranium mineralization wireframes for both deposits. The geological model of the mineralization represents distinct irregularly shaped pods that are mappable continuously from borehole to borehole. The solid used to constrain the block model was defined using a traditional wireframe interpretation constructed from explicit modelling and sectional interpretation of the drilling data using a 0.02% U3O8 threshold. This threshold grade for the deposit modelling was used as it defined the margins and continuity of the uranium mineralization at the Horseshoe and Raven Deposits. Constructing a singular wireframe envelope for both deposits supersedes the 28 subzones for the Horseshoe Deposit and the 16 subzones from the Raven Deposit. However, in the resource estimate presented below, only blocks in the block model that exceeded the COG of 0.05% U3O8 were included in the estimate.

 

95

 

The evaluation of the mineral resources involved the following procedures:

 

Database compilation and verification.

 

Construction of 3D wireframe models for the boundaries of the uranium mineralization using a 0.02% U3O8 threshold.

 

Data extraction and processing (capping), and statistical analysis.

 

Selection of estimation strategy and estimation parameters.

 

Block modelling and grade estimation.

 

Validation.

 

Preparation of the Mineral Resource Estimate.

 

11.3

Resource Database

 

All exploration data available to evaluate the mineral resources for the Horseshoe and Raven deposits are listed in Table 11‑1. These holes were drilled by UEX in 2005 through 2009 and 2011. These drillholes pierce the mineralization wireframe or are within the immediate vicinity of it.

 

Table 111: Horseshoe and Raven Deposits Exploration Drillholes

 

Horseshoe Deposit

# of Drillholes

Metres

Series of Holes

404

128,180

HO-001 - H-016, HR-001 - HR-013, HS-001, HU001-HU-373, HU-318A

Raven Deposit

# of Drillholes

Metres

Series of Holes

311

82,206

RV-001 - RV-028, RU-001 - RU-283

 

All drillhole collar locations were surveyed by Total station DGPS at the time of their completion.

 

UEX exported all the relevant borehole sampling data for the mineral estimation as CSV files from the DHLogger database, and Mr. Barsi imported it into Datamine Studio RM. The QP performed the following validation steps:

 

checked minimum and maximum values for each quality value field and confirmed/edited those outside of expected ranges;

 

checked for gaps, overlaps and out of sequence intervals in assays tables; and

 

there were very few intervals that needed to be adjusted since the previous resource database was used. The QP spot checked records against the previous database with the current database and found no errors or anomalies.

 

After these measures were implemented, no errors were found in the database. The QP is satisfied that the database is useable for mineral resource estimation.

 

96

 

11.4

Geological Modelling

 

Detailed descriptions of the geological characteristics of the Horseshoe and Raven deposits are outlined in Section 6.6. Given the shape of the two deposits, the QPs considered that any future mining of the deposits would likely be by underground cut-and-fill mining methods, as it is one of the most selective underground mining methods in use and suitable for the extraction of non-tabular mineralized bodies. The Horseshoe Deposit dips moderately to the south and has a distinct plunge of mineralization to the northeast following dilational zones between the bedding planes of individual stratigraphic units. The Raven Deposit is more tabular and dips moderately to the southeast.

 

Due to the distribution of mineralization in each deposit, the continuity of each of the deposits was determined on a section-by-section basis during the process of generating the wireframes. Continuity of mineralization was established by a QP between holes within each individual section and then determined from section to section spaced at 25 m intervals. Sections were setup for each of the two deposits to be perpendicular to the controlling structure. The singular wireframes for both deposits were modeled independently of the stratigraphic units by creating wireframes interpolated from the mineralization assays. Every effort was made to exclude any material below the threshold grade of 0.02% U3O8, but in some cases samples below cut-off would have to be included to achieve the goal of a singular wireframe for each deposit, especially in situations when mineralization occurred along strike of such areas on the adjacent sections that exceeded the threshold grade. The singular strings that bounded the mineralization on each section generally follow the dip/orientation of the previous wireframed subzones resulting in strings that are generally irregular versions of lenticular, tabular and vein-like horizons. Once the strings outlining the mineralization on each section were completed, they were joined together to create a singular wireframe defined within the diamond drillhole pattern (Figure 11‑1, Figure 11‑2, Figure 11‑3, & Figure 11‑4). The authors have determined that given the density of drilling of both deposits that there would be areas between the sections within the wireframe that were not mineralized, given that the continuity of mineralization on each section was previously established. The wireframes show the deposits to be anastomosing bodies that are contiguous from section to section when appropriate. This is not surprising given that the mineralization is mostly a disseminated style with areas of higher grade being more vein type controlled. The Horseshoe wireframe dips moderately to the southeast and has a distinct plunge to the mineralization progressing from the southwest to northeast. The Raven wireframe is more tabular and dips moderately to the southeast. Upon completion of the wireframes, the assay sample database was trimmed to samples that only fall within the mineralized wireframe.

 

The continuity of the mineralization on each section and between sections was compared to the interpolated block model developed and described in Sections 11.8, 11.8, 11.10 and 11.11 below. As shown in Figures 11.9 and 11.10, good correlation between mineralized holes was observed and the interpolated block grades matched assay grades closely.

 

97

 

image30.jpg

 

Figure 111: Horseshoe Wireframe Plan View (Looking Down)

 

image31.jpg

 

Figure 112: Horseshoe Wireframe Isometric View (Looking NNE)

 

98

 

image32.jpg

 

Figure 113: Raven Wireframe Plan View (Looking Down)

 

image33.jpg

 

Figure 114: Raven Wireframe Isometric View (Looking NNE)

 

11.5

Specific Gravity

 

Specific gravity measurements were obtained by dry bulk density at the assay laboratory as part of the routine assaying protocol. A total of 2,198 specific gravity measurements were taken within the various stratigraphic units and in all types of alteration on the Horseshoe deposit, while 1,526 samples were taken on the Raven deposit. Due to the spatial location of the specific gravity measurements and the lack of correlation between the measurements and the metal content, a uniform specific gravity was applied to the uranium mineralization wireframes of 2.48 (Figure 11‑5 and Figure 11‑6) and (Table 11‑2 and Table 11‑3).

 

99

 

image34.jpg

 

Figure 115: Horseshoe Density vs U3O8

 

Table 11‑2: Horseshoe Density Statistics

 

Horseshoe Density Statistics

Mean

2.48

Standard Error

0

Median

2.52

Mode

2.54

Standard Deviation

0.15

Sample Variance

0.02

Kurtosis

10.98

Skewness

-2.44

Range

1.81

Minimum

1.33

Maximum

3.14

Sum

5461.39

Count

2198

 

100

 

image36.jpg

 

Figure 11‑6: Raven Density vs U3O8

 

 

[The remainder of this page is intentionally left blank.]

 

 

101

 

 

Table 11‑3: Raven Density Statistics

 

Raven Density Statistics

Mean

2.48

Standard Error

0

Median

2.53

Mode

2.57

Standard Deviation

0.18

Sample Variance

0.03

Kurtosis

8.47

Skewness

-2.24

Range

1.82

Minimum

1.11

Maximum

2.93

Sum

3780.93

Count

1526

 

11.6

Composites

 

Assays were composited to one metre lengths, which is the 80th percentile of the lengths contained within the mineralized wireframe. The minimum composite length allowed is 0.15 m. The compositing method chosen in Datamine Studio RM is the one whereby all samples are included in one of the composites. This is achieved by adjusting the composite length but trying to keep the length as close as possible to one metre. Compositing had the effect of slightly reducing the coefficient of variation.

 

11.7

Capping

 

Basic statistics, histograms and cumulative probability plots for each metal were applied to determine appropriate capping grades. A QP capped the Horseshoe assays at 10% and the Raven assays at 1.88% after generating cumulative probability plots. These are illustrated in Figure 11‑7 and Figure 11‑8. Basic statistics for the uranium assays, composited assays, composite assays trimmed to inside the wireframe, and composite assays trimmed to the wireframe with capping applied, are summarized in Table 11‑4. A QP used the composite assayed that were capped and trimmed to the uranium wireframe assays to complete the block model estimations for each deposit.

 

 

[The remainder of this page is intentionally left blank.]

 

 

102

 

image38.jpg

 

Figure 117: Log Probability Plot for Horseshoe Composite and Trimmed Assays

 

[The remainder of this page is intentionally left blank.]

 

 

103

 

image39.jpg

 

Figure 118: Log Probability Plot for Raven Composite and Trimmed Assays

 

Table 11‑4: Basic Statistics for Mineralized Wireframes at Horseshoe and Raven

 

Horseshoe and Raven Deposits

Deposit

Sample Count

Minimum

Maximum

Mean

Standard Deviation

Coefficient of Variation

Capped Count

Assays

Horseshoe

24068

0

20.4

0.1

0.449

4.5

-

Raven

21463

0

18.8

0.047

0.214

4.51

-

Comp. Assays

Horseshoe

23755

0

20.4

0.1

0.449

4.48

-

Raven

20983

0.0001

18.8

0.048

0.211

4.42

-

Comp. Trim. Assays

Horseshoe

14976

0

20.4

0.152

0.556

3.66

-

Raven

12177

0.0001

18.8

0.076

0.27

3.55

-

Trim. Cap. Assays

Horseshoe

14976

0

10

0.15

0.513

3.42

8

Raven

12177

0.0001

1.88

0.073

0.184

2.53

42

 

104

 

 

11.8

Block Model Definition

 

As a starting point, the QPs followed the block size criteria set forth in the 2009 Report, with a block size of five by five by 2.5 m for the mineralized wireframe. The QPs visually checked the blocks in both 2D and 3D and deemed it appropriate to use the existing block criteria as referenced above. Sub-cells, at 0.25 m resolution, were used to respect the geology of the modelled wireframe. Sub-cells were assigned the same grade as the parent cell. The block model was rotated on the Z-axis to honor the orientation of the mineralization. The characteristics of the final block model are summarized in Table 11‑5.

 

Table 115: Horseshoe and Raven Deposits Block Model Specifications

 

Horseshoe Deposit

Lenses

Axis

Block Size (m)

 

Number

Rotation

Rotation

   

Parent

Sub-cell

Origin* of Cells Angles Priority

 

X

5

0.25

555,740

128

-

-

All

Y

5

0.25

6,415,140

30

-

-

 

Z

2

0.25

330

40

345

1

Raven Deposit

Lenses

Axis

Block Size (m)

 

Number

Rotation

Rotation

   

Parent

Sub-cell

Origin* of Cells Angles Priority

 

X

5

0.25

555,740

128

-

-

All

Y

5

0.25

6,415,140

30

-

-

 

Z

2

0.25

330

40

345

1

* UTM grid (NAD 83 datum)

 

11.9

Search Ellipsoid

 

The QPs chose search ellipsoids based on the controls of mineralization at both deposits. The X-axis was the long axis as it is parallel to the main trend of the axial plane that controls mineralization. The Y-axis was rotated to match the general dip of the units. The Z-axis was most restrictive to limit spreading/smearing of material between zones of higher-grade mineralization (Table 11‑6).

 

Table 116: Search Ellipse Parameters for Horseshoe and Raven Estimation

 

Horseshoe Deposit

R1x

R1y

R1z

Angle1

Angle1

Angle1

Axis

Axis

Axis

(m)

(m)

(m)

1

2

3

1

2

3

15

15

10

335

-40

0

3

1

3

Raven Deposit

R1x

R1y

R1z

Angle1

Angle1

Angle1

Axis

Axis

Axis

(m)

(m)

(m)

1

2

3

1

2

3

25

25

10

345

-40

0

3

1

3

1 The rotation angles are shown in Datamine RM convention.

 

105

 

11.10

Estimation Strategy

 

Table 11‑7 summarizes the general estimation parameters used for the uranium estimation. Grade estimation used an inverse distance weighting a squared estimation algorithm and three passes informed by composited, capped and trimmed to wireframe assays. The first pass was the most restrictive in terms of search radii required. Successive passes usually populate areas with less dense drilling, using less restrictive data requirements (Table 11‑8). Upon completion of the estimation, the QPs reviewed the resource estimate at each cross-section to visually ensure that the estimation was representative of the assay grades where the drillhole pierces/passes through the wireframe. For the first estimation pass, assays from at least five samples were required to estimate a block, though most blocks used the maximum numbers or assays allowable if it could get them.

 

Table 117: Estimation Parameters for Horseshoe and Raven Deposits

 

Horseshoe Deposit

                         

Parameter

 

1st

Pass

   

2nd Pass

   

3rd Pass

 

Interpolation method

 

ID2

   

ID2

   

ID2

 

Search range X (relative to ellipse)

 

1X

   

1X

   

1X

 

Search range Y (relative to ellipse)

 

1X

   

1X

   

1X

 

Search range Z (relative to ellipse)

 

1X

   

1X

   

1X

 

Minimum number of Assays

    5       3       3  

Maximum number of Assays

    10       12       24  

Raven Deposit

Parameter

 

1st

Pass

   

2nd Pass

   

3rd Pass

 

Interpolation method

 

ID2

   

ID2

   

ID2

 

Search range X (relative to ellipse)

 

1X

   

2X

   

4X

 

Search range Y (relative to ellipse)

 

1X

   

2X

   

4X

 

Search range Z (relative to ellipse)

 

1X

   

2X

   

4X

 

Minimum number of Assays

    5       3       3  

Maximum number of Assays

    24       24       24  

 

 

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106

 

 

Table 118: Volume Estimated per Pass for Each Deposit

 

Horseshoe Deposit

Lenses

 

Estimation

   

Volume

   

Percent

 
   

Pass

   

Estimation

   

Estimated

 

 

    1       196,577       70 %
All      2       81,913       29 %
      3       1187       1 %

Raven Deposit

Lenses

 

Estimation

   

Volume

   

Percent

 
   

Pass

   

Estimation

   

Estimated

 

 

    1       303,772       88 %
All      2       39,005       11 %
      3       1159       1 %

 

11.11

Block Model Validation

 

The resulting block models for both the Horseshoe and Raven Deposits were validated by:

 

Comparison of block model volumes to volumes within solids.

 

Visual comparison of colour-coded block model grades with drillhole grades on section and plan plots.

 

Comparison of block model grades and drillhole grades using swath plots.

 

11.11.1

Block Volume/Solid Volume Comparison

 

The block model volumes were compared to the wireframe volumes (Table 11‑9). Both deposits returned nearly identical volumes for the block models versus the wireframes. The very small variation in volume is likely from using cubes to fill a complex irregular shape.

 

Table 119: Wireframe Volume vs Block Model Volume

 

Horseshoe

Wireframe Volume (m3)

Block Model Volume (m3)

4,495,576

4,495,127

Raven

Wireframe Volume (m3)

Block Model Volume (m3)

5,174,080

5,174,176

 

11.11.2

Visual Validation of Sections

 

The visual comparisons of block model grades with composite grades for both deposits show a reasonable correlation between the values. No significant discrepancies were apparent from each section that was reviewed. Examples of this process can be seen in Figure 11‑9 and Figure 11‑10.

 

107

 

 

image46.jpg

 

Figure 119: Horseshoe Visual Check of Drillhole Grades against Block Grades (Section Orientation of 335°)

 

 

[The remainder of this page is intentionally left blank.]

 

108

 

image47.jpg

 

Figure 1110: Raven Visual Check of Drillhole Grades against Block Grades (Section Orientation of 345°)

 

11.11.3

Swath Plots

 

Swath plots (Figure 11‑11 & Figure 11‑12) have been generated for the block model grades versus the drillholes assays for each wireframe. In general, the swath plots show a good correlation between drillholes and ID2 values. There are a few instances where the swath plot has discrete peaks that weakly correlate, but that is likely due to the irregular morphology of the deposits as it progresses along the X direction. The swath plots show that the block model is not exaggerating the localized high-grade uranium assays and was used as confirmation that the model is not over-estimating uranium grades.

 

109

 

 

image48.jpg

 

 

Figure 1111: Horseshoe Swath Plot in the X Direction

 

image49.jpg

 

Figure 1112: Raven Swath Plot in the X Direction

 

110

 

 

11.11.4

Validation Author Statement

 

Validation checks confirm that the block estimates are a reasonable representation of the informing data considering the current level of geological and geostatistical understanding of the Property.

 

11.12

Mineral Resource Classification

 

Block model quantities and grade estimates were classified according to the CRIRSCO classification criteria for an Indicated Mineral Resource and the requirements of S-K 1300 by Mr. Nathan Barsi, P.Geo. (APEGS#15012) under the supervision of Mr. Roger Lemaitre P.Eng., P.Geo. (APEGS #10647).

 

The CRIRSCO definition for an Indicated Mineral Resource in the 2017 SME Guide is:

 

“A Mineral Deposit or part of a deposit may be classified as an Indicated Mineral Resource in a Public Report when the nature, quality, amount, and distribution of data are such as to allow the Competent Person determining the Mineral Resource to confidently interpret the geological framework and to assume physical continuity of mineralization. Confidence in the estimate is sufficient to allow the appropriate application of technical and economic parameters to prepare incremental mine plans (typically annual or phases) and production schedules and to enable an evaluation of economic viability. Overall confidence in the estimates is high, while local confidence is reasonable. The Competent Person should recognize the importance of the Indicated Mineral Resource class to the advancement of the project. An Indicated Mineral Resource estimate is of sufficient quality to support detailed technical and economic studies leading to Probable Mineral Reserves which can serve as the basis for major development decisions.

 

In assessing continuity between points of observation, the Competent Person should consider the likely cut-off grade and geometric limits that would be used to prepare incremental (e.g., annual or phased) mine plans.

 

The 2017 SME Guide goes on to state that in regard to the QP’s choice for the appropriate class of mineral resource that for indicated resources:

 

“Confidence in the estimate is sufficient to allow the appropriate application of technical and economic parameters to prepare incremental plans (typically annual or phased) and production schedules and to enable an evaluation of economic viability.

 

The QPs are satisfied that the geological modelling honors the current geological information and knowledge. The location of the samples and the assay data are sufficiently reliable to support resource evaluation. The sampling information was acquired by core drilling with pierce points between seven metres and 30 m apart, but generally at 10 m across section and 25 m along strike. The QPs are confident that it has modelled the overall spatial location of the uranium mineralization and that it is representative of the controls. Preliminary metallurgical data has been collected and has been disclosed in the relevant section. The QPs consider all block estimates within the mineralized lenses to satisfy the classification CRIRSCO criteria for an Indicated Mineral Resource.

 

111

 

The COG used to determine resources was calculated to be 0.05% U3O8 by the QPs.

 

The QPs determined COG by considering a cut-and-fill underground mining method for the two deposits. The mining parameters used to determine COG are listed in Table 11‑10. The limitations associated with typical cut-and-fill mining processes require that all rock present within a mineralized zone be mined and removed from the mining stope regardless of whether or not that portion of rock is mineralized, partially mineralized or is considered to be waste rock. Thus, the cost to mine mineralized rock is equivalent to the cost of mining waste rock. In a cut-and-fill underground mining scenario, waste rock must be removed.

 

Processing, water treatment, general and administrative costs, along with mining and milling recoveries using heap leach extraction, were estimated for the Horseshoe and Raven deposits. The uranium price of US$50/lb was used and is considered reasonable given the range of spot uranium prices reported by industry price expert TradeTech between June 30, 2022 and this TRS’ effective date of October 31, 2022. An exchange rate of C$1.00 to US$0.79 was used.

 

As the cost of mining waste rock and mineralized rock are the same in cut-and-fill underground extraction, marginal COGs are determined exclusively from the processing, water treatment and general and administrative costs.

 

The marginal COG was determined using the formula:

 

COG = Processing+Water Treat+G&A+ Mining Mineralization-Mining Waste in Cost per tonne
Uranium Price (in CAD$ per t) x total recovery

 

Criteria related to calculating COG is presented in Table 11‑10.

 

 

[The remainder of this page is intentionally left blank.]

 

112

 

Table 1110: Cut-Off Grade Determination

 

Assumptions

 

Uranium Price

$

52.00  

USD/lb U3O8

 
 

$

114,639  

USD/t U3O8

 
 

$

157,040  

CAD/t U3O8

 
         

Mining Recovery

95.0%

     

Processing Recovery

95.0%

     

Total Recovery

90.3%

     
         

USD Exchange

C$1.00 =

 

$

 0.73  

US

 

Mining, Processing and General Administrative Costs

 

Mining Mineralization - Mining Waste*

 

$

-  

Processing/Water Treatment

 

$

48.89  

General and Administrative

 

$

22.20  
 

Total

 

$

71.09  

 

Marginal Cut-Off Grade

 

Cut-Off Grade =

Processing Costst + Mining Costs Mineralization - Mining Costs Waste

 

Uranium Price (CAD$/t) x Total Recovery

   

Cut-Off Grade =

0.05%     U3O8

 

* In Cut-and-Fill Mining, cost to Mine Mineralization = cost to Mine Waste

t Processing Costs in equation include water treatment and general and administrative costs

 

Only blocks within the wireframe model that exceeded the COG of 0.05% U3O8 were included in the resource estimate.

 

Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the mineral resources will be converted into mineral reserve. The QPs are unaware of any environmental, permitting, legal, title, taxation, socio-economic, marketing and political or other relevant issues that may materially affect the mineral resources.

 

The Mineral Resource Estimate for the Horseshoe and Raven Deposits is presented in Table 11‑11.

 

Table 1111: Horseshoe and Raven Deposits Mineral Resource Estimates

 

Horseshoe Deposit Uranium Resource

Deposit

Category

Quantity (Tonnes)

Average Grade U3O8 (%)

Total lbs U3O8

Horseshoe

Indicated

4,982,500

0.215

23,594,000

Raven Deposit Uranium Resources

Deposit

Category

Quantity (Tonnes)

Average Grade U3O8 (%)

Total lbs U3O8

Raven

Indicated

5,370,000

0.117

13,832,400

*Mineral resources are not mineral reserves and have not demonstrated economic viability. There is no certainty that all or any part of the mineral resource will be converted into mineral reserve. All figures are rounded to reflect the relative accuracy of the estimates. Resources were estimated using a COG of 0.05% U3O8.

 

11.13

Grade Sensitivity Analysis

 

The mineral resource model is relatively sensitive to the selection of the reporting uranium COG. To illustrate this sensitivity, the quantities and grade estimates are presented in Table 11‑12 at various COGs. The reader is cautioned that the figures presented in this table should not be misconstrued with a Mineral Resource Statement. The tables are only presented to show the sensitivity of the block model estimate to the selection of U3O8 COG.

 

113

 

Table 1112: Global Block Model Quantities and Grade Estimates at Various U3O8 Cut-Off Grades

 

Horseshoe Grade Sensitivity Analysis

Cut-Off

Indicated Blocks

Grade

Volume / Quantity

 

Grade

U3O8

Volume

Tonnage

 

U3O8

(%)

(m3)

(tonnes)

 

(%)

0.01

4,113,990

10,202,696

 

0.119

0.02

3,415,704

8,470,945

 

0.140

0.05

2,009,077

4,982,512

 

0.215

0.10

1,196,033

2,966,088

 

0.313

0.15

866,315

2,148,462

 

0.386

0.20

628,722

1,559,230

 

0.466

0.25

468,775

1,162,562

 

0.548

0.30

372,190

923,032

 

0.620

0.35

300,907

746,250

 

0.689

0.40

238,923

592,530

 

0.771

Raven Grade Sensitivity Analysis

Cut-Off

Indicated Blocks

Grade

Volume / Quantity

 

Grade

U3O8

Volume

Tonnage

 

U3O8

(%)

(m3)

(tonnes)

 

(%)

0.01

5,013,261

12,432,888

 

0.066

0.02

4,117,590

10,211,623

 

0.077

0.05

2,165,334

5,370,028

 

0.117

0.10

867,706

2,151,912

 

0.186

0.15

439,339

1,089,560

 

0.250

0.20

244,018

605,165

 

0.312

0.25

149,652

371,138

 

0.368

0.30

93,338

231,479

 

0.424

0.35

60,029

148,873

 

0.481

0.40

40,251

99,822

 

0.534

 

The sensitivity analysis indicates that a large portion of the resource for the deposits are lower grade pounds.

 

11.14

Resource Uncertainty and Prospect of Economic Extraction

 

As shown in Table 11‑12, the tonnage of the mineral resource estimate is very sensitive to changes in COG. As COG was determined using marginal operating costs, uranium prices of US$50.00/lb U3O8, mining recovery of 95%, and milling recovery of 95%, these sources of uncertainty could have a material impact on the tonnage of the total indicated resources presented in Table 11‑11. As uranium prices are currently highly volatile, a significant decrease in uranium prices could have a significant decrease in the total tonnage of the indicated resources. Additional metallurgical heap leach extraction studies would be required to provide additional certainty to the metallurgical recovery before economic studies could be completed.

Sampling, drilling methods, data processing and handling, geological modeling and the estimation method used are not considered to be well constrained and understood and likely would not have a material impact on the tonnage of the indicated resources presented in Table 11‑11.

It is the opinion of the QPs that all issues related to the technical and economic factors that are likely to influence the prospect of economic extraction can be resolved with further work. The uncertainty of some of these factors may be resolved with the recommended work program outlined below in Section 23.

 

 

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12

MINERAL RESERVE ESTIMATES

 

As this TRS in considered an IA, there are no mineral reserves for the Property.

 

 

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115

 

13

MINING METHODS

 

As this TRS in considered an IA, detailed mining methods have not been determined for the Property.

 

 

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116

 

14

PROCESS AND RECOVERY METHODS

 

As this TRS in considered an IA, detailed process and recovery methods have not been determined for the Property.

 

 

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117

 

15

INFRASTRUCTURE

 

As this TRS in considered an IA, detailed infrastructure plans have not been determined for the Property.

 

 

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118

 

16

MARKET STUDIES

 

As this TRS in considered an IA, detailed market studies have not been completed for the Property.

 

 

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119

 

17

ENVIRONMENTAL STUDIES, PERMITTING, PLANS, NEGOTIATIONS OR AGREEMENTS WITH LOCAL INDIVIDUALS OR GROUPS

 

As this TRS in considered an IA, detailed environmental studies, plans, negotiations or agreements with local individuals or groups have not been completed for the Property.

 

 

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18

CAPITAL AND OPERATING COSTS 

 

As this TRS in considered an IA, detailed capital and operating cost studies have not been completed for the Property.

 

 

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19

ECONOMIC ANALYSIS

 

As this TRS in considered an IA, an economic analysis has not been completed for the Property.

 

 

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122

 

20

ADJACENT PROPERTIES

 

There are no applicable adjacent properties to the Horseshoe and Raven Deposits.

 

 

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123

 

21

OTHER RELEVANT DATA AND INFORMATION

 

There is no other known relevant data and information at this stage of the project.

 

 

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22

INTERPRETATION AND CONCLUSIONS

 

The singular wireframe constructed by the current QPs was developed using the former authors’ subzones for each deposit as a guide. The alternate section definition and the distribution of the drillholes and assays resulted in the majority of the subzones being truncated by the newly interpreted singular wireframes around the margin of the two deposits.

 

The Horseshoe Deposit is estimated to contain an indicated resource of 23,594,000 lbs U3O8 with an average grade of 0.215% U3O8 at a COG of 0.05% U3O8. The Raven Deposit is estimated to contain an indicated resource of 13,832,400 lbs U3O8 with an average grade of 0.117% U3O8 at a COG of 0.05% U3O8. No inferred resources have been estimated for either deposit.

 

The Raven deposit’s contained uranium in indicated resources in this estimate is increased by 0.1% along with the average grade increase at a cut-off of 0.05% U3O8 when compared to the combined indicated and inferred resources reported in the 2009 Report. The objective of the 2011 drill program at the Raven deposit was to confirm continuity of mineralization. The very small increase in resources estimated at the Raven deposit in this TRS, as well as the corresponding slight increase in grade is partly the result of the results of the 2011 drill program.

 

This updated mineral resource will be able to be used for any future development work on the Property given that all the drillhole data has been included and disclosed at effective date of this TRS.

 

The total tonnage of the mineral resource estimate presented above is very sensitive to changes in COG, and thus changes to marginal operating costs, uranium prices, mining recovery and milling recovery. As uranium prices are currently highly volatile, a significant decrease in uranium prices could have a significant decrease in the total tonnage of the indicated resources. Additional metallurgical heap leach extraction studies would be required to provide additional certainty to the metallurgical recovery before economic studies could be completed.

 

Most issues related to the technical and economic factors that are likely to influence the prospect of economic extraction can be resolved with further engineering work.

 

 

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23

RECOMMENDATIONS

 

The QPs’ recommendations are as follows:

 

23.1

Preliminary Economic Assessment

 

Given that the Horseshoe and Raven resource is in the indicated category, it is recommended than an IA with economic parameters be completed in order to determine the potential economics and viability of mining the Horseshoe and Raven Deposits. This document would determine whether the projects warrant advancing to a pre-feasibility study. Completing the economic parameters for an IA is estimated to cost CAD $150,000 - $200,000.

 

23.2

Additional Field Duplicate Sampling

 

During the proposed IA work recommended in Section 22, it is recommended that UEC undertake an additional sampling program to supplement the summer 2009 to 2011 assay data as the field duplicate data could not be easily segregated and validated from the assay database. The QPs are confident that field duplicate samples were taken, but taking additional samples would eliminate any doubt of the validity of the data and eliminate future but very minor QA/QC concerns over this subpopulation (7.88% of the total sample database) as part of any future preliminary economic assessment, as recommended in Section 26.1.

 

It is recommended to take approximately 500 samples across both deposits, as this would be approximately 2% of the sample population to date. The majority of the costs associated with an additional sampling program would be analytical costs, as the sample pulps from the original assay sample pulps may still be available from the laboratory. If the samples are available, the estimated cost of an additional sampling program would be CAD $25,000. If they are not available, the cost would increase by approximately 33%, as new samples would have to be collected from the historical drill core the next time an exploration program is active at the Raven camp where the core is stored. This would cost approximately CAD $35,000.

 

23.3

Advanced Metallurgy

 

Preliminary metallurgy was completed for the 2009 and 2011 technical reports. Additional metallurgical work was completed in 2015, focusing on the viability of using uranium heap leach recovery. It is recommended that UEC advance the heap leach metallurgical testing to the next phase by completing additional compositing of representative samples from the Horseshoe and Raven deposits to continue developing the parameters for recovering the mineralized material in a sellable product. A recommend minimum of six tonnes of material is required for this work. The cost of completing this work would be CAD $2,350,000, and is broken down in the Table 23‑1.

 

126

 

 

Table 231: Cost Break Down of Metallurgical Drill Program

 

Description

 

Total (C$ 000s)

   

Direct Costs

               

Personnel

    220          

Field Equipment Costs

    30          

Analysis

    80          

Travel and Transport

    15          

Miscellaneous

    5          

Subtotal

            350  

Contractor Costs

               

Diamond Drilling

    1,500          

Camp Costs

    400          

Other Contractor

    100          

Subtotal

            2,000  

Total

            2,350  

 

 

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127

 

24

REFERENCES

 

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Andrade, N., 1983a. Project 564, South Block, Compilation and economic geology. Eldorado Resources Ltd., internal company report, 206 pages.

 

Andrade, N., 1983b. North Block, Compilation and economic geology. Eldorado Resources Ltd., internal company report, 217 pages.

 

Annesley, I.R., and Madore, C., 1991. The Wollaston Group and its underlying Archean basement. Final Report, SRC Publication R-1230-4-C-91.

 

Annesley, I., Madore, C., and Portella, P., 2005. Geology and thermotectonic evolution of the western margin of the Trans-Hudson orogen: evidence from the eastern sub- Athabasca basement, Saskatchewan. Canadian Journal of Earth Sciences, v. 42, p. 573-597.

 

Annesley, I.R., Madore, C., Quirt, D., Shi, r., and Dyck, J., 1995. Wollaston Eagle Project: Segment 1 Report. Saskatchewan Research Council Publication No. R-1230-16-C-95, 132 pages, plus appendices.

 

Annesley, I.R., Madore, C., Shi, R., Quirt, D., Dyck, J., Hajnal, Z., and Reilkoff, B., 1996. Wollaston Eagle Project: Segement 2 Report. Saskatchewan Research Council Publication No. R-1420-5-C-96, 184 pages, plus appendices.

 

Appleyard, E.C., 1984. The origin of plagioclasite in the vicinity of the Rabbit Lake uranium deposit; in Summary of Investigations, Saskatchewan Geological Survey, Saskatchewan Energy and Mines, Misc. Report 84-4, pp. 68-71.

 

Baldwin, D., 2009. Horseshoe and Raven Deposits, QAQC Summary Report for the Period September 2008 to June 2009, internal report to UEX, 27 pages.

 

Baudemont, D., Piquard, J.P., Ey, F., and Zimmerman, J., 1993. The Sue uranium deposits, Saskatchewan, Canada. Exploration and Mining Geology, Vol. 2, No. 3, pp. 179-202.

 

Bickford, M.E., Collerson, K.D., and Lewry, J.F., 1994. Crustal history of the Rae and Hearne provinces, southwestern Canadian Shield, Saskatchewan: constraints from geochronologic and isotopic data. Precambrian Research, v. 68, pp. 1-21.

 

Cameron, K., and Eriks, S., 2008a. Hidden Bay uranium project: Report on fall 2005 airborne resolve survey and results. UEX Corporation, assessment report, 25 pages.

 

Cameron, K., and Eriks, S., 2008b. Hidden Bay uranium project: Report on winter 2006 airborne VTEM survey and results. UEX Corporation, assessment report, 52 pages.

 

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Cristall, J., 2005. Interpretation of the 2004 VTEM Electromagnetic Survey Tent-Seal, Post- Landing, Cunning Bay, West Rabbit Fault and West Bear Areas. Cameco Corporation, internal report to UEX Corporation, 17 pages plus appendices.

 

Cumming, G.L., and Krstic, D., 1992. The age of unconformity-related uranium mineralization in the Athabasca Basin, northern Saskatchewan. Canadian Journal of Earth Science, Vol. 29, pp. 1623-1639.

 

DiPrisco, G., 2008. Mineralogical characterization of U-rich drill core samples from the Horseshoe-Raven project, Northern Saskatchewan. Unpublished report to UEX Corporation, 19 pages.

 

Doerksen, G., Melis, L., Liskowich, M., Murphy, B., Palmer, K., and Pilotto, D., 2011. Preliminary Assessment Technical Report on the Horseshoe and Raven Deposits, Hidden Bay Project Saskatchewan, Canada. Report by SRK Consulting (Canada) Inc. to UEX Corporation.

 

Eldorado Resources Ltd., 1986. Uranium Resource Status Summary as of Dec. 31, 1986.Internal Report.

 

Eriks, S. 2012. Hidden Bay Project, Horseshoe Deposit Report on Summer 2009 Activities and Results, Saskatchewan. UEX Corporation, assessment report.

 

Eriks, S., Hasegawa, L. 2014. Hidden Bay Project, Horseshoe Deposit Report on Summer 2011 Activities and Results, Saskatchewan. UEX Corporation, assessment report.

 

Fayek, M., Harrison, T.M., Ewing, R.C., Grove, M., and Coath, C.D., 2002. O and Pb isotope analyses of uranium minerals by ion microprobe and U-Pb ages from the Cigar Lake deposit; Chemical Geology, v. 185, p. 205-225.

 

Forand, L., 1995. Rabbit Lake joint venture 1995 annual exploration report. Cameco Corporation, internal company report, 119 pages, plus appendices.

 

Forand, L., 1999. Rabbit Lake joint venture 1998 annual exploration activities report. Cameco Corporation, internal company report, 58 pages, plus appendices.

 

Forand, L., and Nimeck, G., 1992. Rabbit Lake exploration joint venture, annual report, 1992 exploration activities, CBS 6802, 6761, 6785-6789, 6804. Cameco Corporation, internal company report, 56 pages plus appendices.

 

Forand, L., Nimeck, G., and Wasyliuk, K., 1994. Rabbit Lake exploration joint venture, 1994 annual exploration report volume 1 of 2. Cameco Corporation, internal company report, 87 pages.

 

Foster, S., Wasyliuk, K., and Powell, B., 1997. Rabbit Lake joint venture 1997 exploration program. Cameco Corporation, 72 pages, plus appendices.

 

Goldak, D and Powell, B., 2003. Report on the 2002 Geophysical Activities, Horseshoe-Raven and Telephone Lake Grids, Mineral Dispositions S-106961, S-106962, and S-106981, NTS 64 L/4 and 64 L/5, Assessment Report submitted to Saskatchewan Industry and Resources, Cameco Corporation, 11 pages, plus appendices.

 

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Gyorfi, I., Hajnal, Z., White, D.J., Takacs, E., Reilkoff, B., Annesley, I.R., Powell, B., Koch, R., 2007. High-resolution seismic survey from the McArthur River region: contributions to mapping of the complex P2 uranium ore zone, Athabasca Basin, Saskatchewan. In EXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta,(ed.) C.W. Jefferson and G. Delaney; Geological Survey of Canada, Bulletin 588 (also Saskatchewan Geological Society, Special Publication 18; Geological Association of Canada, Mineral Deposits Division, Special Publication 4), pp. 397-412.

 

Hasegawa, L., Eriks, S. 2014. Hidden Bay Project, Horseshoe Deposit Report on Winter 2011 Activities and Results, Saskatchewan. UEX Corporation, assessment report.

 

Hasegawa, L., Musienko, E. 2015. Hidden Bay Project, Horseshoe Deposit Report on Winter 2012 Activities and Results, Saskatchewan. UEX Corporation, assessment report.

 

Healey, C.M., and Ward, D.M., 1988. Cameco statement of ore reserves and mineral resources. Cameco Corporation, internal company report.

 

Hoeve, J., and Quirt, D.H., 1985. A stationary redox front as a critical factor in the formation of high-grade, unconformity type uranium ores in the Athabasca Basin, Saskatchewan, Canada. Bulletin Mineralogique, Volume 110, pp. 157-171.

 

Hoeve, J., and Sibbald, T.I.I., 1978. On the genesis of Rabbit Lake and other unconformity- type uranium deposits in northern Saskatchewan, Canada. Economic Geology, Vol. 73, pp. 1450-1473.

 

Hubregtse, J.J., and Duncan, B., 1991. Geological evaluation and petrography of the Raven Lake area and the Horseshoe-Raven Deposit area. Cameco Corporation, consultant’s report, 36 pages plus appendices.

 

Irvine, R., 2004. VTEM survey for UEX Corporation, Points North, Saskatchewan, Project 460. UEX Corporation, assessment report, 23 pages.

 

Jefferson, C., Thomas, D.J., Gandhi, S.S., Ramaekers, P., Delaney, G., Brisbin, D., Cutts, C., Portella, P., and Olson, R.A., 2007. Unconformity associated uranium deposits of the Athabasca Basin, Saskatchewan and Alberta. Geological Survey of Canada, Bulletin 588, p. 23-67.

 

Jones, B.E., 1980. The geology of the Collins Bay uranium deposit, Saskatchewan. Canadian Institute of Mining and Metallurgy, Bulletin 73, 818, pp. 90-94.

 

Kos, C., 2004. West Bear Mitchell Area 2004 MMI Survey (M-Solution) and Boulder Sampling Survey. Cameco Corporation, report UEX Corporation.

 

Lemaitre, R., 2006. 2005 Resource Estimate of the West Bear Deposit, Cameco Corporation, report prepared for UEX Corporation. 54 pages plus appendices, filed on SEDAR.

 

Lemaitre, R., and Herman, T., 2003. Hidden Bay project: 2002 and 2003 exploration report. Cameco Corporation, exploration report to UEX Corporation, 107 pages plus appendices.

 

Lemaitre, R., and Herman, T., 2006. Hidden Bay project: 2005 diamond drilling report. Cameco Corporation, exploration report to UEX Corporation, 97 pages plus appendices.

 

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Lewry, J.F., and Sibbald, T.I.I., 1980. Thermotectonic evolution of the Churchill Province in northern Saskatchewan. Tectonophysics, v. 68, pp. 45-82.

 

McCready, K., 2007. U3O8 Method Summary. SRC Geoanalytical Laboratories, 2 pages. Ogryzlo, P.S., 1984. Project 564, South Block summary of activities 1984. Eldorado Resources Ltd., internal company report, 42 pages, plus appendices.

 

Ogryzlo, P.S., 1985. Project 564, South Block summary of activities 1985. Eldorado Resources Ltd., internal company report, 29 pages, plus appendices.

 

Ogryzlo, P.S., 1987. Project 602, Saskatchewan Mineral Venture, South Block fall program. Eldorado Resources Ltd., internal company report, 20 pages, plus appendices.

 

Ogryzlo, P.S., 1987. Project 602, Saskatchewan Mineral Venture, South Block winter program. Eldorado Resources Ltd., internal company report, 38 pages, plus appendices.

 

Ogryzlo, P.S., 1988. Project 602, Saskatchewan Mineral Venture, South Block. Eldorado Resources Ltd., internal company report, 36 pages, plus appendices.

 

Palmer, K.J., 2007. December 2007 Mineral resource estimate, West Bear Deposit. Golder Associates Ltd., report to UEX Corporation dated December 11, 2007, 4 pages.

 

Palmer, K.J., 2008. Technical Report on the Horseshoe and Raven Deposits, including a Mineral Resource estimate for the Horseshoe Deposit, Hidden Bay Property, Saskatchewan, Canada, Report to UEX Corporation, filed on SEDAR.

 

Palmer, K.J. and Fielder, B., 2009. Technical Report on the Hidden Bay Property, Saskatchewan, Canada, including a Mineral Resource Estimate for the Horseshoe, Raven and West Bear Deposits, Report to UEX Corporation, filed on SEDAR.

 

Powell, B., 1996. Assessment report Rabbit Lake project, Rhino Lake property 1996, geophysical program CBS 7252, S105327, S105328. Cameco Corporation, internal company report, 10 pages.

 

Quirt, D.H., 1990. Mineral deposit studies: Horseshoe-Raven uranium deposits, Project 3.12. Saskatchewan Research Council, 65 pages, plus appendices.

 

Ramaekers, P., and Dunne, C.E., 1976. Geology and geochemistry of the eastern margin of the Athabasca basin in Uranium in Saskatchewan, ed. C.E. Dunne, Saskatchewan Geological Society, Special Paper 3, pg. 297-322.

 

Ramaekers, P., Jefferson, C.W., Yeo, G.M., Collier, B., Long, D.G.F, Drever, G., McHardy, S., Jiricka, D., Cutts, C., Wheatley, K., Catuneanu, O., Bernier, S., Kupsch, B., and Post, R.T., 2007. Revised geological map and stratigraphy of the Athabasca Group, Saskatchewan and Alberta in EXTECH IV: Geology and uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta. (ed.).

 

Rhys, D. A., 2002. Geological Report on the Hidden Bay Property, Wollaston Lake Area, Northern Saskatchewan, report prepared for UEX Corporation by Panterra Geoservices Inc., p. 84, filed on SEDAR.

 

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Rhys, D. A., and Ross, K.V., 1999. Structural setting and controls on uranium mineralization, Collins-Bay Rabbit Lake Fault system, Wollaston Lake to Thorburn Lake, northern Saskatchewan. Panterra Geoservices Inc., consulting report for Cameco Corporation, 278 pages.

 

Rhys, D. A., Horn, L., Baldwin, D., and Eriks, S. 2008. Technical Report on the Geology of, and Drilling Results from, the Horseshoe and Raven Uranium Deposits, Hidden Bay Property, Northern Saskatchewan, 131 pages, filed on SEDAR.

 

Rhys, D. A., Eriks, S. 2011. Hidden Bay Project, Horseshoe Deposit Report on Fall 2008 Activities and Results, Saskatchewan. UEX Corporation, assessment report.

 

Rhys, D. A., Eriks, S. 2012. Hidden Bay Project, Horseshoe Deposit Report on Winter 2009 Activities and Results, Saskatchewan. UEX Corporation, assessment report.

 

Ruzicka, V., 1996. Unconformity-associated uranium in Geology of Canadian mineral deposit types, ed. O.R. Eckstand, W.D. Sinclair and R.I. Thorpe, Geological Survey of Canada, Geology of Canada, no. 8, pp. 197-210.

 

Sibbald, T.I.I., 1983. Geology of the crystalline basement, NEA/IAEA Athabasca test area in Uranium Exploration in Athabasca Basin, Saskatchewan, Canada, ed. E.M. Cameron, Geological Survey of Canada, Paper 82-11, pp. 1-14.

 

Sopack, V.J., de Carle, A., Wray, E.M., and Cooper, B. 1983. Application of lithogeochemistry to the search for unconformity-type uranium deposits in the Athabasca Basin in Uranium Exploration in the Athabasca Basin, Saskatchewan, Canada, ed. E.M. Cameron, Geological Survey of Canada, Paper 82-11, pp. 191-205.

 

SMEGAC,     2016.  Mineral Exploration Guidelines for Saskatchewan. http://saskmining.ca/ckfinder/userfiles/files/BMP%20August%202016_Draft.pdf, 137 pages.

 

SRC, 2007. Quality Assurance Report for UEX for the period 2006 – 2007. SRC Geoanalytical Laboratories, 12 pages.

 

SRC Website, 2021. Analytical techniques and sample handling procedures https://www.src.sk.ca/sites/default/files/files/resource/SRC_Geoanalytical_Services_S chedule_2019_FINAL%20web.pdf#page=11.

 

Studer, D., 1984. Project 565, Centre Block, Compilation and economic geology. Eldorado Resources Ltd., internal company report, 135 pages, plus appendices.

 

Studer, D., 1986. Project 565, Centre Block, Summary of activities 1985. Eldorado Resources Ltd., internal company report, 53 pages, plus appendices.

 

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Studer, D., 1989. Saskatchewan Mineral Venture, South Block. Cameco Corporation, internal company report, 32 pages, plus appendices.

 

Studer, D., and Gudjurgis, P., 1985. Project 565, Centre Block, Summary of activities 1984. Eldorado Resources Ltd., internal company report, 80 pages, plus appendices.

 

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Walcott, A., and Walcott, P., 2008. A geophysical report on resistivity surveying, Horseshoe- Raven property, Athabasca Basin, Northern Saskatchewan. Unpublished report for UEX Corporation, 16 pages.

 

Wallis, R.H., 1971. The geology of the Hidden Bay area, Saskatchewan. Saskatchewan Department of Mineral Resources, Report 137, 76 pages.

 

Whitford, K.G., 1971. Exploration report, Permit 8, northern Saskatchewan. Gulf Minerals Canada Ltd., internal report.

 

Witherly, K., 2007. Report on Processing and Analysis of VTEM 30 Hz EM and Magnetics Data, Hidden Bay Project, Athabasca Basin, Saskatchewan. Internal company report prepared by Condor Consulting of Lakewood, Colorado for UEX Corporation.

 

 

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RELIANCE ON OTHER EXPERTS

 

The QPs are partially relying upon the Opinion of Title dated September 7, 2021 by Robertson Stromberg LLP, titled “UEX Corporation - Review of Certain Mineral Dispositions”, wherein section IV Item 3 it is stated that they are of the opinion that UEX is holder of 100% interest on the Horseshoe Raven claim. The QPs are in part relying upon this report as assurance of equity in the title of the claim. The equity stated in the report is consistent with the records indicated by UEX. This reliance applies to Section 3.3.

 

The metallurgical testing and recovery information presented in Section 10 was supplied to the QPs by the Registrant, as UEX had completed an initial metallurgical study in 2011.

 

The basis for the processing/water treatment and general and administrative costs provided by the Registrant, who completed a scoping level engineering analysis report of the Property using a heap leach recovery method and cut-and-fill mining. The QPs used the costs provide by the Registrant that were dated in 2016 and inflated the costs using the Canadian Consumer Price Index to equivalent costs as of December 31, 2021. The inflated costs were used to help determine the resource estimate COG.

 

 

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26

DATE AND SIGNATURE PAGES

 

This TRS titled "2022 Technical Report on the Horseshoe-Raven Project, Saskatchewan" with an effective date of October 31, 2022, and dated December 30, 2022, was prepared and signed by the following authors:

 

 

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135

 

 

CERTIFICATE OF QUALIFIED PERSON

 

To accompany the report entitled: 2022 Technical Report on the Horseshoe-Raven Project, Saskatchewan with an effective date of October 31, 2022, and a signature date of December 30, 2022.

 

I, Christopher Hamel, do hereby certify that:

 

 

1)

I am Vice President Exploration, Canada with the firm of UEC Corporation with an office at Unit 200, 3530 Millar Avenue, Saskatoon, Saskatchewan, Canada.

 

 

2)

I am a graduate of the University of Saskatchewan in 2001, where I obtained a B.Sc. Geology. I have practiced my profession continuously since June 2001. I have been registered as a Professional Geoscientist since 2010. My experience that is relevant to the scope of this Technical Report is:

 

 

Exploration Manager for UEX Corporation from January to September 2021, Vice President, Exploration from October, 2021 to December 1, 2022, and Vice President Exploration, Canada from December 1, 2022 to present, where I guide field teams in the planning and execution of field programs and perform generative and evaluative work for the company. In these roles, I am the senior technical person of responsibility in the company.

 

 

Chief Geologist for UEX Corporation July 2017 to January 2021, where I supported field activities and performed generative and evaluative work for the company. In this role, I was a senior person of technical responsibility in the company.

 

 

Contract Geologist for UEX Corporation from January 2017 to June 2017, where I participated in the execution of the Christie Lake field program and performed property evaluation and regional compilation work. In this role, I was depended upon for significant participation and decision making.

 

 

Contract Geologist for Forum Uranium November 2016, where I participated in an exploration program to explore for uranium in Saskatchewan.

 

 

District Geologist, Cameco Corporation from April 2012 to October 2016, where I was regional management in support of multiple exploration project teams. I helped to design, implement, and allocate exploration budgets between projects to advance uranium exploration field programs in Saskatchewan, which included uranium discoveries on the Read Lake, Mann Lake, and Hughes Lake projects. I helped plan and oversee the drill program to evaluate the uranium resource at Cigar Lake Phase II. In this role, I was in a senior technical position of responsibility.

 

 

Project Geologist, Cameco Corporation from April 2008 to March 2012, where I was responsible for the project-level management of uranium exploration programs in northern Saskatchewan at the Rabbit Lake and McArthur River mine sites. My work at Rabbit Lake included the discovery and delineation of a new zone of mineralization at Eagle Point. My work at McArthur River was focused on the on-going evaluation of the P2 trend north and south from the mine workings. During this time, I was in a position of responsibility and was depended upon for significant participation and decision-making.

 

136

 

 

Geologist III for Cameco Corporation from Nov 2006 to Jan 2008, where I was responsible for uranium exploration projects in northern Saskatchewan, including what is now the LaRocque East property, the Dawn Lake property including evaluation drilling at the Tamarack Deposit and drilling at the Wolf Lake Zone on the Studer Option Property. This role is transitionary, moving a person from a role involving independent judgement to a role of participation and decision-making.

 

 

Geologist II, Cameco Corporation from April 2004 to March 2008, where I participated in the successful execution and management of uranium field exploration programs, including evaluation drilling at the Tamarack Deposit and  exploration drilling at the Dawn Lake “11” and “14” zones on the Dawn Lake property and participated in exploration in Cameco’s Australian projects. This role requires the exhibition of independent judgement and occasionally decision-making with respect to the execution of exploration programs.

 

 

Exploration Geologist for DeBeers Canada Exploration June 2001 to March 2004, where I participated in and managed exploration programs to explore for, delineate and evaluate diamond deposits in Northwest Territory, Nunavut and Saskatchewan.

 

 

3)

I am a Professional Geoscientist registered with the Association of Professional Engineers & Geoscientists of Saskatchewan (APEGS#12985) since June 2010.

 

 

4)

I have personally inspected the subject project and was on site on between June 9 to 17, 2021.

 

 

5)

I have read the definition of “qualified person” set out in Subpart 1300 of Regulation S-K (S-K 1300) and certify that by reason of my education, professional registration and relevant work experience, I fulfill the requirements to be a “qualified person” for the purposes of S-K 1300.

 

 

6)

I have had no involvement with the subject property prior to my employment at UEX Corporation.

 

 

7)

As of the date of this certificate, to the best of my knowledge, information and belief, this technical report contains all scientific and technical information that is required to be disclosed to make the technical report not misleading.

 

 

 

Dated at Saskatoon, Saskatchewan, this 30th day of December, 2022.

 

 

Saskatoon, Saskatchewan

 

/s/ Christopher Hamel

 
December 30, 2022

Christopher Hamel, P.Geo. (APEGS#12985)

Vice President Exploration, Canada
UEC Corporation

 

137

 

 

CERTIFICATE OF QUALIFIED PERSON

 

To accompany the report entitled: 2022 Technical Report on the Horseshoe-Raven Project, Saskatchewan with an effective date of October 31, 2022, and a signature date of December 30, 2022.

 

I, Nathan Barsi, do hereby certify that:

 

1)

I am the District Geologist with the firm of UEX Corporation with an office at Unit 200, 3530 Millar Avenue, Saskatoon, Saskatchewan, Canada.

 

2)

I am a graduate of the University of Saskatchewan in 2007, where I obtained a B.Sc. Geology. I have practiced my profession continuously since May 2007. I have been registered as a Professional Geoscientist since 2015. My experience that is relevant to the scope of this Technical Report is:

 

 

District Geologist, UEX Corporation from October 2021 to present, where I am regional management in support of multiple exploration project teams. I helped to design, implement, and allocate exploration budgets between projects to advance uranium and cobalt nickel exploration field programs in Saskatchewan that included Christie Lake, Hidden Bay, and West Bear. In this role, I am in a senior technical position of responsibility.

 

 

Senior Geologist, UEX Corporation from January 2021 to October 2021, where I managed the West Bear and Hidden Bay exploration projects and lead the team that discovered the Michael Lake Cobalt and Nickel zone. I completed in house mineral resource estimates for various properties. In this role, I am in a senior technical position of responsibility.

 

 

Project Geologist for, UEX Corporation from 2018 to January 2021, where I was responsible for the project-level management of uranium exploration programs in northern Saskatchewan. I was responsible for managing and exploration on the West Bear Project from discovery of the maiden Cobalt Nickel Resource (2018) to resource definition drilling and mineral resource modelling and estimation of the deposits (2019). I also completed generative work for future drill programs on multiple projects in the Athabasca Basin and filled in as the Project Geologist for Christie Lake. During this time, I was in a position of responsibility and depended upon for significant participation and decision-making.

 

 

Contract Geologist, UEX Corporation from December 2016 to December 2017, where I participated in exploration program for uranium on the Christie Lake project.

 

 

Project Geologist, Cameco Corporation from April 2014 to October 2016, where I was responsible for the management of uranium field exploration programs in northern Saskatchewan. During this time, I was in a position of responsibility and depended upon for significant participation and decision-making.

 

 

Geologist III, Cameco Corporation from 2014 to 2011 Millennium, where I was responsible for uranium exploration projects in northern Saskatchewan, including mineral resource and geotechnical drilling at the Millennium deposit. In 2011, I worked in the Alligator River Uranium Field in the Northern Territory of Australia. I was an integral part of the exploration team that found the Angularli unconformity uranium deposit and developed further follow up targets with the team. This role is transitionary, moving a person from a role involving independent judgement to a role of participation and decision-making.

 

138

 

 

Geologist II, Cameco Corporation from 2011 to 2009, where I participated in the successful execution and management of uranium field exploration programs at the Centennial Deposit in the Athabasca Basin and the Otish Project in the Otish Basin in Quebec. I toured and reviewed the Matoush deposit model in the Otish Basin, a style of mineralization that was atypical of an unconformity or basement-hosted deposit. This role requires the exhibition of independent judgement and occasionally decision-making with respect to the execution of exploration programs.

 

 

Geologist I, Cameco Corporation from 2009 to 2007, where I participated in the successful execution and management of uranium field exploration programs, including resource drilling at the Millennium Deposit and Tamarack Deposit and exploration drilling at the surrounding property of the Millennium Deposit, Rabbit Lake Mine and Dawn Lake projects. I toured mining and milling facilities at Mcclean Lake Mine and Rabbit Lake Mine and have observed unconformity and basement uranium mineralization in mining stopes and pit walls.

 

3)

I am a professional Geoscientist registered with the Association of Professional Engineers & Geoscientists of Saskatchewan (APEGS#15012) since March of 2015.

 

4)

I have personally inspected the Horseshoe-Raven Project site and was on site on between June 9 to 17, 2021.

 

5)

I have not been involved with the Horseshoe-Raven Project prior to my employment at UEX Corporation.

 

6)

I have read the definition of “qualified person” set out in Subpart 1300 of Regulation S-K (S-K 1300) and certify that by reason of my education, professional registration and relevant work experience, I fulfill the requirements to be a “qualified person” for the purposes of S-K 1300.

 

7)

As of the date of this certificate, to the best of my knowledge, information and belief, this Technical Report contains all scientific and technical information that is required to be disclosed to make the Technical Report not misleading.

 

 

Dated at Saskatoon, Saskatchewan, this 30th day of December, 2022.

 

Saskatoon, Saskatchewan

 

/s/ Nathan Barsi

 
December 30, 2022

Nathan Barsi, P.Geo. (APEGS#15012)

District Geologist, Canada
UEC Corporation

 

139

 

 

CERTIFICATE OF QUALIFIED PERSON

 

To accompany the report entitled: 2022 Technical Report on the Horseshoe-Raven Project, Saskatchewan with an effective date of October 31, 2022, and a signature date of December 30, 2022.

 

I, Roger Lemaitre, P.Geo. P.Eng., do hereby certify that:

 

1)

I am the former President and Chief Executive Officer of UEX Corporation (“UEX”) with an office at Unit 200, 3530 Millar Avenue, Saskatoon, Saskatchewan, Canada.

 

2)

I am a graduate of Queens University in 1992, where I obtained a B.Sc. (Applied) in Geological Engineering.

 

3)

I am graduate of McGill University in 1994, where I obtained an M.Sc. (Applied) in Geology – Mineral Resources and Exploration.

 

4)

I am a graduate of Athabasca University, where I obtained a Masters of Business Administration in 2011.

 

5)

I have been registered as a Professional Engineer continuously since 1997. I have been a registered Professional Engineer with the Association of Professional Engineers & Geoscientists of Saskatchewan since January 6, 1999 (APEGS #10647). Previously, I was registered as a Professional Engineer with Professional Engineers Ontario (former PEO #910472317) between March 11, 1997 and March 13, 2002.

 

6)

I have been a registered Professional Geoscientist with the Association of Professional Engineers and Geoscientists of Saskatchewan since January 6, 1999 (APEGS #10647).

 

7)

I have practiced my profession continuously since 1992. My experience that is relevant to the scope of this Technical Report includes direct involvement in generating, managing and conducting: (i) exploration activities, including the collection, supervision and review of geological, mineralization, exploration and drilling data; (ii) geological modeling; (iii) sampling, sample preparation, assaying and other resource-estimation related analyses; (iv) completion of quality control and quality assurance studies; and (v) mineral resource estimation for uranium, cobalt-nickel, zinc-lead and zinc-copper projects in Canada and worldwide. I am currently president and CEO of UEX, where since 2014 I have been responsible for managing UEX’s Athabasca uranium project portfolio and have been actively involved in review of UEX’s independent resource estimates of the West Bear Co-Ni Deposit and the Christie Lake Project, as well as the completion of internal mineral resource estimates during the evaluation of two acquisition opportunities. Prior to my role at UEX, I have had involvement with various other uranium and nickel projects, including acting as President and CEO of URU Metals Limited (“URU”), where I was responsible for URU’s uranium projects in Niger, Sweden and Canada and nickel projects in South Africa, and acting in various roles for Cameco Corporation (“Cameco”), including as director of worldwide exploration, where I was responsible for supervising Cameco’s global exploration portfolio, during which time I was responsible for the evaluation of uranium projects by conducting internal resource estimates on eleven global uranium deposits for potential acquisition by Cameco and the completion of the internal resource estimate of the Angularli deposit.

 

8)

I have personally been involved in managing drill programs for the Horseshoe-Raven Project between 2002 and 2005 and since have inspected the subject project and visited the property several times in 2019. I last visited the Horseshoe-Raven Site to inspect core and outcrop related to the Horseshoe and Raven Deposits on July 23 through July 26, 2019. I was able to examine, along with the UEX technical team, the key features of the Horseshoe-Raven deposit geology and mineralizing processes in drill core.

 

140

 

9)

I have read the definition of “qualified person” set out in Subpart 1300 of Regulation S-K (S-K 1300) and certify that by reason of my education, professional registration and relevant work experience, I fulfill the requirements to be a “qualified person” for the purposes of S-K 1300.

 

10)

As of the date of this certificate, to the best of my knowledge, information and contains all scientific and technical information that is required to be disclosed to make the Technical Report Summary not misleading.

 

 

Dated at Saskatoon, Saskatchewan, this 30th day of December, 2022.

 

 

Saskatoon, Saskatchewan

 

/s/ Roger Lemaitre

 
December 30, 2022

Roger Lemaitre, P.Geo. (APEGS#10647)

Former President and CEO, Canada
UEX Corporation

 

141