Exhibit 96.3

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary May 17, 2023 Prepared for: Prepared by: Warrior Met Coal, Inc. MARSHALL MILLER & ASSOCIATES, INC. 16243 Highway 216 582 Industrial Park Road Brookwood, Alabama 35444 Bluefield, Virginia 24605 www.mma1.com

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Statement of Use and Preparation This Technical Report Summary (TRS) was prepared for the sole use of Warrior Met Coal, Inc. (Warrior Met) and its affiliated and subsidiary companies and advisors. Copies or references to information in this report may not be used without the written permission of Warrior. The report provides a statement of coal resources and coal reserves for Warrior Met, as defined under the United States Securities and Exchange Commission (SEC). The statement is based on information provided by Warrior Met and reviewed by various professionals within Marshall Miller & Associates, Inc. (MM&A). MM&A professionals who contributed to the drafting of this report meet the definition of Qualified Persons (QPs), consistent with the requirements of the SEC. The information in this TRS related to coal resources and reserves is based on, and fairly represents, information compiled by the QPs. At the time of reporting, MM&A?s QPs have sufficient experience relevant to the style of mineralization and type of deposit under consideration and to the activity they are undertaking to qualify as a QP as defined by the SEC. Certain information set forth in this report contains ?forward-looking information?, including production, productivity, operating costs, capital costs, sales prices, and other assumptions. These statements are not guarantees of future performance and undue reliance should not be placed on them. The assumptions used to develop forward-looking information and the risks that could cause the actual results to differ materially are detailed in the body of this report. MM&A hereby consents (i) to the use of the information contained in this report dated December 31, 2022, relating to estimates of coal resources and coal reserves controlled by Warrior Met,(ii) to the use of MM&A?s name, any quotation from or summarization of this TRS in Warrior Met?s SEC filings, and (iii) to the filing of this TRS as an exhibit to Warrior Met?s SEC filings. This report was prepared by: Qualified Person: /s/ Marshall Miller & Associates, Inc. May 17, 2023 MARSHALL MILLER & ASSOCIATES, INC. 1

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Table of Contents Statement of Use and Preparation 1 Table of Contents 2 1 Executive Summary 8 1.1 Property Description .8 1.2 Ownership .9 1.3 Geology 10 1.4 Exploration Status .11 1.5 Operations and Development 11 1.6 Mineral Resource .12 1.7 Mineral Reserve .12 1.8 Capital Summary 13 1.9 Operating Costs 14 1.10 Economic Evaluation .16 1.10.1 Cash Flow Analysis .18 1.10.2 Sensitivity Analysis .19 1.11 Permitting .19 1.12 Conclusion and Recommendations .20 2 Introduction 21 2.1 Registrant, Terms of Reference, and Scope of Work .21 2.2 Information Sources 21 2.3 Personal Inspections 22 2.4 Updates to Previous TRS .22 3 Property Description .23 3.1 Location .23 3.2 Titles, Claims or Leases 24 3.3 Mineral Rights .24 3.4 Encumbrances .25 3.5 Other Risks 25 4 Accessibility, Climate, Local Resources, Infrastructure and Physiography .26 4.1 Topography, Elevation, and Vegetation .26 4.2 Access and Transport .26 4.3 Proximity to Population Centers 27 4.4 Climate and Length of Operating Season 27 4.5 Infrastructure 27 MARSHALL MILLER & ASSOCIATES, INC. 2

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 5 History .29 5.1 Previous Operation 29 5.2 Previous Exploration 29 6 Geological Setting, Mineralization and Deposit .29 6.1 Regional, Local and Property Geology .29 6.2 Mineralization .31 6.3 Deposits .31 7 Exploration .33 7.1 Nature and Extent of Exploration .33 7.1.1 Summary of Exploration Data 33 7.2 Non-Drilling Procedures and Parameters 36 7.3 Drilling Procedures 36 7.4 Hydrogeology 36 7.4.1 Introduction .36 7.4.2 Summary of Hydrogeologic Findings .37 7.5 Geotechnical Data .38 8 Sample Preparation Analyses and Security .38 8.1 Prior to Sending to the Lab .38 8.2 Lab Procedures .39 8.3 Opinion of Qualified Person 39 9 Data Verification .40 9.1 Procedures of Qualified Person 40 9.2 Limitations 41 9.3 Opinion of Qualified Person 41 10 Mineral Processing and Metallurgical Testing 42 10.1 Testing Procedures 42 10.1.1 M-Series Holes .42 10.1.2 NR5-Series Holes 42 10.1.3 S-Series Holes 43 10.2 Warrior Met’s Current Exploration Procedures 43 10.3 Quality Assessment .43 10.4 Derivation of Product Yield .44 10.5 Relationship of Tests to the Whole .46 10.6 Lab Information 47 10.7 Relevant Results, Metallurgical Quality .47 10.8 Pertinent Results and Opinion of the Qualified Person .48 MARSHALL MILLER & ASSOCIATES, INC. 3

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 11 Mineral Resource Estimates .49 11.1 Assumptions, Parameters and Methodology 50 11.1.1 Statistical Analysis for Classification 51 11.2 Qualified Person’s Estimates .53 11.3 Qualified Person’s Opinion .53 12 Mineral Reserve Estimates .54 12.1 Assumptions, Parameters and Methodology 54 12.2 Qualified Person’s Estimates .55 12.3 Qualified Person’s Opinion .56 13 Mining Methods and Mine Plan Design 57 13.1 Geotechnical and Hydrologic Aspects of Mine Design 57 13.1.1 Horizontal Stress .57 13.1.2 Pillar Design .57 13.1.3 Hydrogeology 57 13.2 Production Rates 58 13.3 Mining Related Requirements .59 13.4 Required Equipment and Personnel .59 14 Processing and Recovery Methods 60 14.1 Description or Flowsheet 60 15 Infrastructure .61 15.1 Mine Ventilation 61 15.2 Methane .61 15.3 Materials Handling 62 15.4 Seam Access .62 15.5 Surface Infrastructure 62 15.5.1 Preparation Plant & Materials Handling Infrastructure .62 15.5.2 Clean Coal Transportation .63 15.5.3 Water Supply 63 15.5.3.1 Potable Water .64 15.5.4 Power .64 16 Market Studies 64 16.1 Market Description 64 16.2 Price Forecasts .64 16.3 Contract Requirements .65 17 Environmental Studies, Permitting and Plans, and Social and Community Impacts 66 17.1 Results of Studies .66 MARSHALL MILLER & ASSOCIATES, INC. 4

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 17.2 Requirements and Plans for Waste Disposal .66 17.2.1 Disposal Methods and Design Concepts .66 17.2.2 Life-of-Mine Storage Requirements 66 17.2.3 Storage Areas 67 17.2.4 Control of Proposed Storage Areas .67 17.2.5 Refuse Permitting .67 17.3 Permit Requirements and Status .68 17.4 Local Plans, Negotiations or Agreements 68 17.5 Mine Closure Plans 69 17.6 Qualified Person’s Opinion .69 18 Capital and Operating Costs .69 18.1 Capital 69 18.2 Operating Cost .71 18.3 Capex & Opex Summary Tables 72 19 Economic Analysis 73 19.1 Assumptions, Parameters and Methods .73 19.2 Results .76 19.3 Sensitivity 78 19.4 Economic Analysis Summary .79 20 Adjacent Properties 79 20.1 Information Used .79 21 Other Relevant Data and Information 79 22 Interpretation and Conclusions 80 22.1 Conclusion .80 22.2 Project Risk Assessment .80 22.2.1 Assumptions and Limitations .81 22.2.2 Methodology 81 22.2.3 Development of the Risk Matrix 82 22.2.3.1 Quantification of Risk Likelihood and Severity of Impact 82 22.2.4 Categorization of Risk Levels and Color Code Convention 84 22.2.5 Summary of Residual Risk Ratings .84 22.2.6 Risk Factors 85 22.2.6.1 Geological and Coal Resource .85 22.2.6.1 Environmental .86 22.2.6.2 Regulatory Requirements .87 22.2.6.3 Market and Transportation .87 MARSHALL MILLER & ASSOCIATES, INC. 5

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 22.2.6.4 Mining Plan 88 23 Recommendations .93 24 References 93 25 Reliance on Information Provided by Registrant 93 FIGURES (IN REPORT) Figure 1-1: Blue Creek Project Location Map . 9 Figure 1-2: Generalized Stratigraphic Column of Warrior Basin Sequence with Mary Lee Coal Zone Highlighted in red (after Pashin, 2005) . 10 Figure 1-3: Initial Investment Capital ($000) 14 Figure 1-4: OPEX . 16 Figure 1-5: Blue Creek Production and Revenue 17 Figure 1-6: After-tax Cash Flow Summary (000) . 18 Figure 1-7: Sensitivity of NPV 19 Figure 3-1: Blue Creek Project Location Map . 23 Figure 6-1: Geologic Column of the Mary Lee – Blue Creek Sequence . 30 Figure 6-2: Generalized Geologic Profile Indicating Dominant Overburden Lithologies 33 Figure 7-1: Drill Hole Location Map . 35 Figure 15-1: Approximate Location of Plant and Various Infrastructure . 63 Figure 18-1: Initial Investment Capital ($000) . 70 Figure 18-2: OPEX 72 Figure 19-1: Blue Creek Production and Revenue 77 Figure 19-2: After-tax Cash Flow Summary (000) . 78 Figure 19-3: Sensitivity of NPV 79 TABLES (IN REPORT) Table 1-1: Coal Resources Summary as of December 31, 2022 . 12 Table 1-2: Coal Reserves Summary, Specific to Mining Areas A through E1, (Marketable Sales Basis) as of December 31, 2022 13 Table 1-3: Inflation Factors 15 Table 1-4: Life-of-Mine Tonnage, P&L before Tax, and EBITDA . 17 Table 2-1: Information Provided to MM&A by Warrior Met . 21 Table 10-1: Yield, Clean Ash and Sulfur (1.5 SG), Eastern Mining Areas A Through D . 44 Table 10-2: Yield, Clean Ash and Sulfur (1.5 SG), Eastern Mining Area E1 . 44 Table 10-3: Washability for the Mary Lee, Blue Creek, and Combined Seam (Excluding Middleman), Dry Basis, Mining Areas A Through D . 45 Table 10-4: Washability for the Mary Lee, Blue Creek, and Combined Seam (Excluding Middleman), Dry Basis, After Yield and Ash Adjustment; Mining Areas A Through D . 46 Table 10-5: Metallurgical Characteristics 48 Table 10-6: Summary of Wash Recovery Assumptions . 48 Table 11-1: General Reserve and Resource Criteria 50 MARSHALL MILLER & ASSOCIATES, INC. 6

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Table 11-2: Statistical Analysis of Drill Hole Data Spacing 52 Table 11-3: Coal Resources Summary as of December 31, 2022 53 Table 12-1: Coal Reserves Summary, Specific to Mining Areas A through E1, (Marketable Sales Basis) as of December 31, 2022 56 Table 13-1: Blue Creek Production Forecast Summary 59 Table 14-1: 5 Years of Projected Wash Yields for Blue Creek 61 Table 16-1: Adjusted Pricing . 65 Table 17-1: Currently Active Permits 68 Table 18-1: Inflation Factors . 71 Table 18-2: Estimated Coal Production Taxes and Sales Costs 71 Table 18-3: Project LOM Major Cost Line Items – Opex 72 Table 22-1: Probability Levels of Risks and Corresponding Values . 82 Table 22-2: Consequence Level Table 83 Table 22-3: Risk Matrix . 84 Table 22-4: Residual Risk Assessment Matrix 85 Table 22-5: Geological and Coal Resource Risk Assessment (Risks 1 and 2) . 86 Table 22-6: Environmental (Risks 3 and 4) . . 87 Table 22-7: Regulatory Requirements (Risk 5) 87 Table 22-8: Market (Risk 6) 88 Table 22-9: Transportation (Risk 7) . 88 Table 22-10: Methane Management (Risk 8) . 89 Table 22-11: Mine Fires (Risk 9) . 89 Table 22-12: Availability of Supplies and Equipment (Risk 10) 90 Table 22-13: Labor – Work Stoppage (Risk 11) . 90 Table 22-14: Labor – Retirement (Risk 12) 91 Table 22-15: Construction Delays and Cost Overruns (Risk 13) . 91 Table 22-16: Permitting Delays (Risk 14) . 92 Table 22-17: Select, Isolated Parcels of Uncontrolled Mineral (non-BLM lease) within Mine Plan (Risk 15) . 92 Table 22-18: Select, Isolated Parcels of Uncontrolled Mineral (BLM lease) within Mine Plan (Risk 16) 92 Appendices A . Table B . Market Memorandum Provided by Warrior Met MARSHALL MILLER & ASSOCIATES, INC. 7

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 1 Executive Summary 1.1 Property Description Warrior Met Coal, Inc. (Warrior Met) authorized Marshall Miller & Associates, Inc. (MM&A) to prepare this Technical Report Summary (TRS) of its controlled coal reserves, located at its Blue Creek (BC) property in northern Tuscaloosa County, Alabama (the Property). The mine is currently being developed with seam access (shaft & slope installation) underway. The report provides a statement of coal resources and coal reserves for Warrior Met, as defined under the United States Securities and Exchange Commission (SEC) standards. Coal resources and coal reserves are herein reported in metric units of measurement and are rounded to millions of tonnes (Mt). The property is located in northwestern Alabama, approximately 27 miles north of the city of Tuscaloosa and 36 miles west of the city of Birmingham in the southern region of the US. Highway 69 North bisects the property controlled by Warrior Met. Figure 1-1 displays the property’s location. Warrior Met currently controls approximately 30,000 total acres of mining rights associated with the Project (the Property), approximately 85 percent of which are leased from various entities and individuals. Specific to resource and reserve areas, Warrior Met controls approximately 17,000 acres of property, approximately 82-percent of which is leased from various entities and individuals. Based upon the current layout of the mine, the acquisition of additional leases will be required in the eastern and western portions of the Property, including leases from private entities and individuals, as well as a significant number of federally owned tracts from the Bureau of Land Management (BLM). To mitigate risk associated with the BLM tracts, MM&A has assisted Warrior in developing a mine plan for the property which excludes the BLM tracts. This is not presented in the TRS, but it is important to note that financial modeling associated with this alternative mine plan showed favorable economics absent the BLM tracts, albeit at a reduced tonnage. MARSHALL MILLER & ASSOCIATES, INC. 8

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Figure 1-1: Blue Creek Project Location Map Note: Coordinates/Gridlines are shown in the NAD27 Alabama West coordinate system. 1.2 Ownership The Property was formerly controlled by Jim Walter Resources (Walter), the predecessor company of Warrior Met. Walter acquired the majority of its mineral rights for the Blue Creek property in 2010 through its purchase of Chevron Mining, Inc. (Chevron)-owned coal assets located in Alabama. Warrior Met acquired mineral rights and mining operations from Walter in 2016, including two active operating longwall mines (Mine No. 4 and Mine No. 7), located south and southeast of the Project. Reserves and resources associated with these adjacent properties are not included in this report but are issued under separate cover. Figure 1-1 outlines the location of the Property in relation to Warrior’s adjacent properties. MARSHALL MILLER & ASSOCIATES, INC. 9

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 1.3 Geology Operations at the Blue Creek Mine Complex will extract the Mary Lee and Blue Creek coal beds by longwall mining methods. The strata of economic interest for this TRS belong to the Pennsylvanian-age Mary Lee Coal Group or Zone and the subject seams are the principal coal seams of interest within that formation for the present evaluation. Due to the high value of this coal, it has been extensively mined in the region. The Blue Creek Project is among the first in the region to target the higher volatile portion of the basin, with existing and former operations in the basin generally targeting the low and mid volatile coal zones. The seam is situated below drainage throughout the Property and will be accessed by mine shafts and/or slopes. Figure 1-2: Generalized Stratigraphic Column of Warrior Basin Sequence with Mary Lee Coal Zone Highlighted in red (after Pashin, 2005) MARSHALL MILLER & ASSOCIATES, INC. 10

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Warrior Met expects that market placement at BC will largely be based upon the High-Volatile A Indices (HVA). The mine’s production will fit with high-volatile A parameters, so it is anticipated that market placement will be generally priced according to the HVA. 1.4 Exploration Status Since as early as 1957, the Property has been extensively explored by means of: continuous coring and analytic testing, rotary drilling, ongoing drilling associated with coalbed methane (CBM) production, and by downhole geophysical logging methods. The majority of the data was acquired or generated by previous owners of the Property. These sources comprise the primary data used in the evaluation of the coal resources and coal reserves identified on the Property. MM&A examined the data available for the evaluation and incorporated all pertinent information into this TRS. Where data appeared to be anomalous or not representative, that data was excluded (or not honored) from the digital databases and subsequent processing by MM&A. Ongoing exploration has been carried out by Warrior Met since acquiring the Property, and Warrior Met’s recently acquired exploration data (through December 2022) has been consistent with past drilling activities. 1.5 Operations and Development Due to its coal reserve and seam characteristics, the Project will utilize longwall mining methods. The mine plan presented in this TRS utilizes a single longwall supported by continuous mining units. Warrior is considering an alternative mine plan which would increase tonnage via production from two longwall units. This alternative mine plan is not considered as part of this TRS. The mine will produce coal that is suitable for export into the high volatile-A metallurgical coal markets. Run-of-mine coal will be transported to the surface via a slope, the development of which is currently underway. A service shaft and hoist, both also currently being developed, will serve as the primary means of transportation of miners, supplies, and equipment to the coal mine. An additional fan (exhaust) shaft will be required for mine ventilation, and a third shaft (primary intake) will be required to support longwall production. Bleeder shafts will be installed in each longwall district. Run-of-mine coal will be processed in a new preparation plant with a capacity of 1,800 raw-tons-per-hour (1,633 raw tonnes-per-hour). Final plant design and equipment selection is still underway. MM&A’s assessment of coal quality information suggests that the operation will be capable of producing a 10-percent ash, sub-1-percent sulfur, high volatile-A coking coal in Resource and Reserve areas tagged as A through D. Clean coal production will be transported to a newly constructed barge loadout on the Black Warrior River via an overland conveyor. The development schedule set forth in this TRS allows for initial continuous miner development to start in year 2025, with longwall mining commencing in year 2027. At a steady state, the mine will produce between 3 and 4 million tonnes (Mt) of coal annually and employ approximately 375 employees. MARSHALL MILLER & ASSOCIATES, INC. 11

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 1.6 Mineral Resource A coal resource estimate was prepared as of December 31, 2022, for the Blue Creek Project, summarized in Table 1-1. Resources presented in Table 1-1 include both resources inclusive of reserve and resources exclusive of reserve. Resources inclusive of reserve serve (See Areas A, B, C, D and E1 on detailed appendix tables) serve as the basis for the life-of-mine plan and cost model developed at the pre-feasibility level to support reserves which are stated in this report. Resources exclusive of reserve represent those coal tonnes on the western portion of the property which are not yet considered for reserve status (See “Areas E2 and E3” on detailed table in the Appendix). It is Warrior Met’s intention to elevate tonnage within Area E to be compliant with the 2021 SEC Standards in the future via an ongoing exploration drilling campaign. Resources represent in-place coal tonnages exclusive of the interburden, but inclusive of any high-ash partings within the Mary Lee and Blue Creek coal seams. As such, in-situ tonnages and quality as presented in Table 1-1 reflect the inclusion of high-ash partings which are ultimately removed after mining during coal preparation. Table 1-1: Coal Resources Summary as of December 31, 2022 Coal Resource (Dry Tonnes, In Situ, Mt) Resource Quality (Dry) Seam Measured Indicated Inferred Total Ash% Sulfur% VM% Inclusive of Reserves Mary Lee 19.0 13.5 0.0 32.5 ——Blue Creek 50.5 28.4 0.0 78.9 —— Total 69.5 41.9 0.0 111.4 13.8 0.8 30 Exclusive of Reserves 0.0 Mary Lee 0.0 12.8 0.0 12.8 ——Blue Creek 0.0 26.5 0.0 26.5 —— Total 0.0 39.2 0.0 39.2 19.0 1.5 31 Grand Total 0.0 69.5 81.1 0.0 150.7 —— Note 1: For A through E1, Resource tonnes are inclusive of reserve tonnes since they include the in-situ tonnes from which recoverable coal reserves are derived. Note 2: For E2 and E3, Resource tonnes are exclusive of reserve tonnes since they include the in-situ tonnes for which no recoverable reserve tonnes have been estimated. Note 3: Coal resources are reported on a dry basis, inclusive of high-ash partings which are ultimately removed during coal preparation. Surface moisture and inherent moisture are excluded. Note 4: Coal resource quality reported on a raw, weight-averaged basis. Totals may not add due to rounding. 1.7 Mineral Reserve In areas A through E1, the resource estimate has been used as the basis for this reserve calculation, which utilizes a reasonable pre-feasibility level analysis, a life-of-mine (LOM) mine plan and practical recovery factors. Such factors include a mine recovery of 63 percent derived from an engineered mine plan, the consideration of out-of-seam and in-seam dilution material, an effective a wash recovery of 61 percent and the consideration of moisture factors. Projected mine recovery for Blue Creek in comparison to Warrior’s active mines is lower due to faults present in the reserve area which were considered when designing the mine plan. Production modeling was completed with an effective start date of July 1, 2025. MARSHALL MILLER & ASSOCIATES, INC. 12

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Factors that would typically preclude conversion of a coal resource to coal reserve, include the following: inferred resource classification; absence of coal quality; poor mine recovery; lack of access; geological encumbrances associated with overlying and underlying strata; seam thinning; structural complications; and insufficient exploration have all been considered. Reserve consideration excludes those portions of the resource area which exhibit the aforementioned-geological and operational encumbrances. Proven and probable coal reserves were derived from the defined in-situ coal resource considering relevant processing, economic (including technical estimates of capital, revenue and cost), marketing, legal, environmental, socioeconomic, and regulatory factors. The proven and probable coal reserves on the Property are summarized below in Table 1-2. Table 1-2: Coal Reserves Summary, Specific to Mining Areas A through E1, (Marketable Sales Basis) as of December 31, 2022 Demonstrated Coal Reserves (Wet Tonnes, Washed or Direct Shipped, Mt) Wash By Reliability Category By Control Type Quality (Dry Basis) Recovery Seam Proven Probable Total Owned Leased Option Ash% Sulfur% VM% % Mary Lee 11.4 7.9 19.3 3.1 13.9 2.3 12.8 0.9 31 Blue Creek 31.4 17.5 48.9 8.1 35.7 5.1 8.4 0.6 32 61% Total 42.8 25.4 68.2 11.1 49.7 7.4 10.2 0.7 32 Note 1: Marketable reserve tonnes are reported on a moist basis, including a combination of surface and inherent moisture. The combination of surface and inherent moisture is modeled at 10-percent, comparable to Warrior Met’s current product moisture at its operating mines. Actual product moisture is dependent upon multiple geological factors, operational factors, and product contract specifications. Note 2: Wash recovery is based on LOM planning and reflects projected plant recovery after the consideration of out-of-seam dilution. Wash recover is not stated on a seam-by-seam basis, as the Mary Lee and Blue Creek seams are mined together – allocation of dilution material on a seam-by-seam basis would introduce confusion with regards to wash recovery. Detailed reserve tables (see Appendix) show projected in-seam wash recovery on a seam-by -seam basis, absent dilution assumptions. Note 3: Coal Reserves are based upon sales assumptions provided to MM&A by Warrior and were relied upon by MM&A. Financial modeling assumes sales prices of approximately $116.37/tonne (FOB-mine) in 2025, increasing to a long-term price of approximately $150.37/tonne. See Chapter 16 for further details on marketing assumptions. Totals may not add due to rounding. In summary, the Project includes a total of 68.2 Mt (moist basis) of marketable coal reserves as of December 31, 2022. Of that total, 63 percent are proven, and 37 percent are probable. There are 11.1 Mt of owned coal reserves, 49.7 Mt of leased coal reserves and 7.4 Mt of reserve associated with lease options. All the reserves are considered suitable for the metallurgical coal market. 1.8 Capital Summary Warrior Met and MM&A have collaborated to develop a capital expenditure (CAPEX) forecast. MM&A assumes that major equipment rebuilds occur over the course of each machine’s operating life. All the equipment presented for use in the Project is standard well-proven equipment, used in numerous mines throughout the United States. No prototypes or experimental pieces of equipment are included. The initial investment, defined as the CAPEX from project inception through the first year of longwall production is summarized in Figure 1-3. MARSHALL MILLER & ASSOCIATES, INC. 13

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Figure 1-3: Initial Investment Capital ($000) Note: Capital figures are based upon MM&A’s best estimates and are supported by a combination of MM&A’s experience in comparable projects & comparable quotations. Such level is sufficient to meet the criteria of a pre-feasibility level financial assessment. At Warrior Met’s request more Capital has been front-loaded into 2023 and 2024 to mitigate the risk of extended lead times impacting timely delivery of the equipment. Beyond the Initial Investment of $671 million, excluding sunk cost through December 31, 2022, CAPEX is necessary for sustaining production. This includes rebuilds and replacement of equipment, mine development and multiple bleeder, intake and return shafts. Based on a previous detailed study of a mine in the basin, with pricing increased by 16% to reflect recent inflation trends, and a review of Warrior Met’s spending patterns, sustaining capital has been estimated at $11.00 per tonne. No efficiency or production increase projects have been included as they will be analyzed on a stand-alone basis when considered. To reflect typical spending patterns, based on production winding down, sustaining capital is reduced to 75% in 2052, 50% in 2053 and eliminated in 2054, the final year of production. 1.9 Operating Costs MM&A used a combination of historical information and detailed operating cost estimates from a recent study of a property in the region. Where necessary, operating costs were adjusted to reflect differences between this mine and the studied mine. Hourly labor rates and salaries were based upon regional information and expectations. Fringe-benefit costs were developed for vacation and holidays, federal and state unemployment insurance, retirement, workers’ compensation and pneumoconiosis, casualty and life insurance, healthcare, and bonuses. A cost factor for mine supplies was developed that relates expenditures to mine advance rates for roof-control costs. Other mine-supply costs are typically related to factors such as feet of section advance, ROM tonnes mined, and days worked. Other factors were developed for maintenance and repair costs, rentals, mine power, outside services and other direct mining costs. MARSHALL MILLER & ASSOCIATES, INC. 14

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Utilizing this process, costs were calculated at 2022 levels, then to reflect recent inflation trends multipliers were applied to each category. Table 1-3 provides the inflation factors used to escalate the costs from 2022 to 2023. Table 1-3: Inflation Factors Multipliers Labor 3.0% Benefits 3.0% Fuel & Lube 100.0% Parts 14.5% Surface Contractors 17.5% Capital 16.0% Operating costs factors were developed for the coal preparation plant processing, refuse handling, and coal loading. These were also subject to the multipliers in Table 1-3. Property taxes and insurance and bonding were calculated based on regional information and experience at Warrior Met’s other mines. Appropriate royalty rates were assigned for production from leased coal lands, and sales related taxes were calculated for state severance taxes, the federal black lung excise tax, and federal and state reclamation fees. A summary of the operating costs for the Property is provided in Figure 1-4. MARSHALL MILLER & ASSOCIATES, INC. 15

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Figure 1-4: OPEX *The LOM model and associated economic analysis is intended to prove the economic viability of the subject coal tonnage, allowing controlled tons to be classified as “reserve”. The development of costs incorporates a combination of Warrior Met’s historical performance and MM&A’s knowledge of mine productivity and cost structures for comparable operations. 1.10 Economic Evaluation The pre-feasibility financial model prepared for this TRS was developed to test the economic viability of the coal resource area. The results of this financial model are not intended to represent a bankable feasibility study, required for financing of any current or future mining operations contemplated for the Warrior Met property, but are intended to establish the economic viability of the estimated coal reserves. Economic models include non-controlled tons which are expected to be acquired by Warrior Met. Cash flows are simulated on an annual basis based on projected production from the coal reserves. The discounted cash flow analysis presented herein is based on an effective date of January 1, 2023. On an un-levered basis, the NPV of the real cash flow after taxes represents the Enterprise Value of the Property. The cash flow, excluding debt service, is calculated by subtracting direct and indirect operating expenses and capital expenditures from revenue. Direct costs include labor, operating supplies, maintenance and repairs, facilities, costs for materials handling, coal preparation, refuse disposal, coal loading, reclamation, and general and administrative costs. Indirect costs include statutory and legally agreed upon fees related to direct extraction of the mineral. The indirect costs are the Federal black lung tax, Federal and State reclamation taxes, property taxes, coal production royalties, and income taxes. MARSHALL MILLER & ASSOCIATES, INC. 16

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Table 1-4 shows LOM tonnage, P&L, and EBITDA for Blue Creek. Table 1-4: Life-of-Mine Tonnage, P&L before Tax, and EBITDA Tonnes Pre-Tax P&L P&L EBITDA EBITDA (000) ($000) per Tonne ($000) per Tonne Blue Creek 103,824 $8,126,461 $78.27 $9,817,952 $94.56 Note 1: The LOM model includes tonnages contained within adverse tracts which are not included in reserve estimates. Note 2: The LOM model does not consider resources exclusive of reserves on the western portion of the property. Note 3: The LOM model and associated economic analysis is intended to prove the economic viability of the subject coal tonnage, allowing controlled tons to be classified as “reserve”. The exercise should not be construed to represent a valuation of Warrior Met’s holdings. Long-term cash flows incorporate forward-looking market projections which are expected to vary over time based upon historic volatility of coal markets. The development of costs incorporates a combination of Warrior Met’s historical performance and MM&A’s knowledge of mine productivity and cost structures for comparable operations. As shown in Table 1-4, Blue Creek has positive EBITDA over the LOM. Overall, the operation shows positive LOM P&L and EBITDA of $8.1 billion and $9.8 billion, respectively. Warrior Met’s Blue Creek annual production and revenue are shown in Figure 1-5 and the Mine’s after-tax cash flow summary in constant dollars, excluding debt service, is shown in Figure 1-6 below. Figure 1-5: Blue Creek Production and Revenue Note 1: The LOM model includes a portion of tonnage contained within adverse tracts which are not included in reserve estimates. Note 2: The LOM model and associated economic analysis is intended to prove the economic viability of the subject coal tonnage, allowing controlled tons to be classified as “reserve”. The exercise should not be construed to represent a valuation of Warrior Met’s holdings. Long-term cash flows incorporate forward-looking market projections which are expected to vary over time based upon historic volatility of coal markets. The development of costs incorporates a combination of Warrior Met’s historical performance and MM&A’s knowledge of mine productivity and cost structures for comparable operations. MARSHALL MILLER & ASSOCIATES, INC. 17

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Figure 1-6: After-tax Cash Flow Summary (000) Note 1: The LOM model includes a portion of tonnage contained within adverse tracts which are not included in reserve estimates. Note 2: The LOM model and associated economic analysis is intended to prove the economic viability of the subject coal tonnage, allowing controlled tons to be classified as “reserve”. The exercise should not be construed to represent a valuation of Warrior Met’s holdings. Long-term cash flows incorporate forward-looking market projections which are expected to vary over time based upon historic volatility of coal markets. The development of costs incorporates a combination of Warrior Met’s historical performance and MM&A’s knowledge of mine productivity and cost structures for comparable operations. Consolidated cash flows are driven by annual sales tonnage, which starts at 3.73 million tonnes in 2027, the first year of longwall production and averages 3.75 million tonnes per year from 2027 to 2053 the final full year of production. Projected consolidated revenue averages approximately $560.2 million per year during the period 2027 to 2053. Revenue totals $15.5 billion for the property’s life. Consolidated cash flow from the operation is positive throughout the projected operating period, with the exception of mine development years 2022 through 2026 and the post-production years, due to end-of-mine reclamation spending. Consolidated cash flow from the operation averages approximately $259.6 million per year from 2027 to 2053 and totals $6.5 billion over the mine life. Capital expenditures, excluding sunk cost through December 31, 2022, total $1.7 billion over the property’s life. 1.10.1 Cash Flow Analysis Cash flow after tax, but before debt service, generated over the life of the property was discounted to NPV at a 9% discount rate, which represents Warrior’s typical WACC. On an un-levered basis, the NPV of the property cash flows represents the Enterprise Value of the property and amounts to $1.5 billion. The pre-feasibility financial model prepared for the TRS was developed to test the economic viability of each coal resource area. The NPV estimate was made for the purpose of confirming the economics for MARSHALL MILLER & ASSOCIATES, INC. 18

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary classification of coal reserves and not for purposes of valuing Warrior Met or its BC assets. The mine plan was not optimized, and actual results of the operation may be different, but in all cases, the mine production plan assumes the property is under competent management. 1.10.2 Sensitivity Analysis Sensitivity of the NPV results to changes in the key drivers is presented in the chart below. The sensitivity study shows the NPV at the 9% discount rate when Base Case sales prices, operating costs, production, plant yield and capital costs are increased and decreased +/- 10%. A critical case combining Sales price and operating cost was also done reflecting the combined effect of plus 10% operating cost with -10% sales price to -10% operating cost and +10% sales price. Figure 1-7: Sensitivity of NPV 1.11 Permitting Warrior Met reports that it was successful in obtaining MSHA approval in March 2021 for the Slurry Impoundment No.1 facility. This facility will have approximately 1,200 acre-ft of beginning capacity and will support the mine for the first 4 years of production. An Army Corps of Engineers (ACOE) 404 Individual Permit is being prepared for 2023 submittal. Once ACOE review is underway, the SMCRA permit will be updated to reflect the addition of the fine refuse disposal facility. MARSHALL MILLER & ASSOCIATES, INC. 19

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Warrior Met reports that it has completed the initial design of a coarse refuse disposal area which will provide approximately 10,000,000 cubic yards of initial capacity, which should accommodate up to the first 7 years of production. The coarse refuse area is in the advanced stages of permitting and is anticipated to be fully permitted in mid-2023. If a situation were to arise where the fine refuse disposal facility permitting was delayed, the coarse refuse disposal facility could be converted to a combined coarse refuse storage facility and accept coarse and dewatered tailings. Additional mine permits which are currently in place include those from: Alabama Surface Mining Commission (ALSMC); Alabama Department of Environmental Management (ADEM); United States Army Corps of Engineers (USACE); and MSHA. All of the currently approved permits have been renewed as needed and remain in good standing. The existing Surface Mine Control and Reclamation Act (SMCRA) permit will require a minor revision to accommodate revised surface infrastructure plans which have changed since the Project’s inception. 1.12 Conclusion and Recommendations Sufficient data have been obtained through various exploration and sampling programs to support the geological interpretations of seam structure and thickness for coal horizons situated on the subject. The data are of sufficient quantity and reliability to reasonably support the coal resource and coal reserve estimates in this TRS. The geological data and pre-feasibility study, which considers mining plans, revenue, and operating and capital cost estimates are sufficient to support the classification of coal reserves provided herein. As of the writing of this report, Warrior Met is currently conducting core drilling on the Property, and a sustained program of continued exploration is recommended, as well as acquisition of additional geophysical data available from the State Oil & Gas Board of Alabama. Mine development is underway, including the installation of the mine’s slope and various shafts. Warrior Met is aware of potential geotechnical and hydrogeological encumbrances related to faulting, including those associated with the slope development. This geologic evaluation conducted in conjunction with the preliminary feasibility study concludes that the 68.2 Mt of marketable underground coal reserves identified on the Property are economically mineable under reasonable expectations of: continued acquisition of mining rights within future mine plan areas, future market prices for metallurgical coal products, estimated operation costs, and capital expenditures. MARSHALL MILLER & ASSOCIATES, INC. 20

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 2 Introduction 2.1 Registrant, Terms of Reference, and Scope of Work This report was prepared for the sole use of Warrior Met Coal, Inc. and its affiliated and subsidiary companies and advisors. The report provides a statement of coal resources and coal reserves for Warrior Met, as defined under the United States Securities and Exchange Commission (SEC) standards. The report provides a statement of coal reserves for Warrior Met. Exploration results and resource calculations were used as the basis for the mine planning and the preliminary feasibility study completed to determine the extent and viability of the reserve. Coal resources and coal reserves are herein reported in metric units of measurement and are rounded to millions of metric tonnes (Mt). 2.2 Information Sources The technical report is based on information provided by Warrior Met and reviewed by MM&A’s professionals, including geologists, mining engineers, civil engineers, and environmental scientists. MM&A’s professionals hold professional registrations and memberships which qualify them as Qualified Persons in accordance with SEC guidelines. Sources of data and information are listed below in Table 2-1: Table 2-1: Information Provided to MM&A by Warrior Met Report Category Information Provided by Warrior Met Section Geologic data including digital databases and original source data including Geological geologist logs, driller’s logs, geophysical logs. 9.1 Database of coal quality information supplemented with original source Coal Quality laboratory sheets where available. 10.1 Mining Historical productivities and manpower projections. 13 Coal Preparation Flow Sheet descriptions information related to coal processing. 14 Historical and budgetary operating cost information used to derive cost drivers Costs for reserve financial modeling 18 Note: While the sources of data listed in Table 2-1 are not exhaustive, they represent a significant portion of information which supports this TRS. MM&A reviewed the provided data and found it to be reasonable prior to incorporating it into the TRS. The TRS contains “forward-looking information” including forecasts of productivity and annual coal production, operating and capital cost estimates, coals sales price forecasts, the assumption that Warrior Met will continue to acquire necessary permits, and other assumptions. The TRS statements and conclusions are not a guarantee of future performance and undue reliance should not be placed on them. The ability of Warrior Met to recover the estimated coal reserves is dependent on multiple factors beyond the control of MM&A including, but not limited to geologic factors, mining conditions, regulatory approvals, and changes in regulations. In all cases, the plans assume the Property is under competent management. MARSHALL MILLER & ASSOCIATES, INC. 21

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Warrior Met engaged MM&A to conduct a coal reserve evaluation of the BC coal property as of December 31, 2022. For the evaluation, the following tasks were to be completed: > Process the information supporting the estimation of coal resources and reserves into geological models; > Develop life-of-reserve mine (LOM) plans and a financial model; > Hold discussions with Warrior Met company management; and > Prepare and issue a Technical Report Summary providing a statement of coal reserves which would include: —A description of the mines and facilities. —A description of the evaluation process. —An estimation of coal resources and reserves with compliance elements as stated under the new SEC Guidelines which became effective for the first fiscal year that commenced on or after January 1, 2022. 2.3 Personal Inspections MM&A is very familiar with the Blue Creek property, having provided a variety of services since 1991 (including geophysical logging) to the present, and a QP involved in this TRS has conducted multiple site visits to the property. Most recently, MM&A visited the site in March of 2022. 2.4 Updates to Previous TRS This TRS reflects an update to a TRS, published in early 2022 to reflect resources and reserves as of December 31, 2022. Material revisions reflected in this TRS include: 1. Pre-feasibility level financial model updates to reflect inflationary driven cost (operating and capital) increases. 2. Updated market analysis. 3. Bifurcation of Resources in Area E into Areas E1, E2, and E3 and the conversion of the controlled portions of Area E1 to a probable reserve. 4. Incorporation of exploration drilling information obtained in calendar year 2022 and subsequent updates to geological models. MARSHALL MILLER & ASSOCIATES, INC. 22

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 3 Property Description 3.1 Location The Project is located in Tuscaloosa County, in northwestern Alabama, approximately 27 miles north of the city of Tuscaloosa and 36 miles west of the city of Birmingham in the southern region of the US. Highway 69 North bisects the Property. Figure 3-1 displays the Project’s location. Figure 3-1: Blue Creek Project Location Map Note: Coordinates/Gridlines are shown in the NAD27 Alabama West coordinate system. MARSHALL MILLER & ASSOCIATES, INC. 23

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary The BC Property is adjoined by two nearby longwall mining operations that have extracted coal from the same Mary Lee and Blue Creek seams: > Shoal Creek on the east > Mine No. 4 on the south BC reserves and resources are located in two principal areas and five (5) blocks or areas: > Resource (Inclusive of Reserve) & Associated Reserve: —Area A —Area B —Area C —Area D —Area E1 > Western Resource (Exclusive of Reserve), No Corresponding Reserve — Area E2 —Area E3 3.2 Titles, Claims or Leases MM&A has not carried out a separate title verification for the coal property and has not verified leases, deeds, surveys or other property control instruments pertinent to the subject resources. Warrior Met has represented to MM&A that it controls the mining rights to the reserves as shown on its property maps, and MM&A has accepted these as being a true and accurate depiction of the mineral rights controlled by Warrior Met. 3.3 Mineral Rights Warrior Met, through its predecessor Walter, acquired the majority of its mineral rights for the Blue Creek property in 2010 through its purchase of the Chevron-owned coal assets located in Alabama. At the time of purchase, this acquisition included the North River longwall mine operating in the Pratt seam (which has since been divested). Since this acquisition, Warrior Met has strategically purchased and leased mineral and surface rights (and other tracts with options to lease) to further assemble the Project. Currently, Warrior Met has mineral rights on over 17,000 acres associated with the resource and the vast majority of surface rights needed for the planned facilities. Total mineral control, including those tracts not characterized as resource or reserve, is approximately 30,000 acres. In comparison to its active operations, reserves associated with the BC mine plan include relatively more adverse mineral control parcels, although mineral control acquisitions associated with the initial mining districts at BC are largely complete. Warrior Met has employed a similar strategy of obtaining MARSHALL MILLER & ASSOCIATES, INC. 24

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary leases as needed to support the near future mining at its active operations—as such, MM&A honored mine planning for controlled reserve delineation in areas with intermittent control at BC. Adverse tons are not included in reserve tabulations but are included in financial modeling under the assumption that their leases will be obtained by Warrior Met. Some additional coal leases are required to fully assemble the Property; however, with the exception of the Federal Bureau of Land Management (BLM), there does not appear to be notable risk to obtaining additional leases in a time frame consistent with the proposed project schedule. To mitigate risk associated with the BLM tracts, MM&A has assisted Warrior in developing a mine plan for the property which excludes the BLM tracts. This is not presented in the TRS, but it is important to note that financial modeling associated with this alternative mine plan showed favorable economics absent the BLM tracts, albeit at a reduced tonnage. It is of important note that tracts categorized as “owned” represent those in which Warrior Met owns a percentage of tract’s mineral rights. In addition to Warrior Met, other parties and entities own various portions of the “owned” tracts mineral rights. Additionally, the “leased” category includes those tracts in which Warrior Met leases a percentage of the tract’s mineral rights. By assignment, as part of the Study, MM&A has not completed a review of the major leases. Due to confidentiality, only general facts related to the major leases are noted. The majority of the coal leases have an identical initial term of 20 years from the date of execution with an additional 20-year lease term extension. A portion of the coal leases have 10-year term extensions. Certain leases have performance terms related to mining execution. The leases can be extended so long as mining operations are being conducted on the leased premises. The leases are then held by a series of earned production royalty payments. The annual minimum royalty is reduced by the amount of earned production royalty paid on mined coal. All annual minimum royalty payments are recoupable against any earned royalty due under the coal leases on a lease-by-lease basis. The royalty rates for the BC project are estimated to be 8.0% of the sales revenue FOB the mine after deduction of all transportation and loading costs between the mine and the vessel. By assignment, MM&A has not independently verified property boundaries specific to each lease; however, MM&A has reviewed Warrior Met-supplied boundary mapping. 3.4 Encumbrances No Title Encumbrances are known. By assignment, MM&A has not completed query related to Title Encumbrances. 3.5 Other Risks There is always risk involved in property control. Warrior Met has had their legal teams examine the deeds and title control in order to minimize the risk. Historically, property control has not posed any challenges related to Warrior Met’s operations. A significant portion of uncontrolled tracts which must MARSHALL MILLER & ASSOCIATES, INC. 25

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary be obtained by Warrior Met in order to execute the mine plan presented herein are owned by the Federal Government’s Bureau of Land Management (BLM). Regionally, operators (including Warrior Met’s predecessors) have experienced a successful track record of obtaining mining rights to BLM properties. In comparison to its active operations, the BC project carries an elevated level of risk with regards to property control based upon its intermittent control in areas outside of the initial longwall mining districts. 4 Accessibility, Climate, Local Resources, Infrastructure and Physiography 4.1 Topography, Elevation, and Vegetation The Property is located in the physiographic region of northern Alabama within the Black Warrior (BWB) Basin region of the US. The area is rugged upland of moderate topography with more than 200 feet of relief adjacent to major streams. The area is dissected by streams that flow to the southeast and eventually to the Black Warrior River. A major drainage within the Property is Big Yellow Creek and its two tributaries, Little Yellow Creek and Four Mile Creek. The upland topographic features are controlled by lithology, with large flat surfaces formed by underlying sandstone with steeper slopes formed by weathered shale and siltstones. Maximum relief within the Property is approximately 460 feet with elevation ranging from 260 feet above mean sea level (MSL) along banks of the Big Yellow River to 720 feet along the top of the flat ridges. 4.2 Access and Transport General access to the Project complex is very good via State Route 69 which traverses the central portion of the Property from southwest to northeast. State Route 69 is a well maintained, paved, two-lane road with Interstate access in close proximity to both the north and south. SR-69 directly intersects Interstates 59 and 20 approximately 30 miles to the south at Tuscaloosa and intersects Interstate 22 about 23 miles to the north (with Birmingham about 40 miles to the east). Direct access to the preparation and coal handling facilities, as well as the supply yard at the mine slope is off of County Route 46 (Brandon School Road) which runs southeast to northwest through the Property from State Route 69. Brandon School Road is also a paved two-lane road, and these facilities lie within about 2.5 miles of the intersection with SR-69. The deep mine’s portal and shaft facilities lie along an unimproved road approximately one-quarter mile off of SR-69. All of the initial facilities are in close proximity to high quality, public roads and lie within 3 miles of each other. A multitude of coalbed methane (CBM) and gas well roads bisect the Property providing exceptional surface access to areas overlying the mineral boundaries. The closest rail transport for the proposed mine site is a rail line located approximately 8 miles to the northwest at the intersection of Brandon School Road and County Route 30 near the town of Berry. MARSHALL MILLER & ASSOCIATES, INC. 26

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary River transport with barge loadout facilities is available approximately 10 miles to the southeast of the proposed plant facilities on the Black Warrior River. In order to access additional coal markets, a new unit train rail loadout is also being considered. With the aforementioned rail access being at Berry, options are being considered to either bring rail to the preparation plant for on-site train loading or to install an overland conveyor to the existing rail for off-site train loading. The rail project has not been considered in the economic analysis presented in this TRS. It is anticipated that coal will be shipped into the seaborne metallurgical markets. As part of a commercial real estate transaction with Alabama State Port Authority in 2014, Warrior Met secured expansion capacity of the McDuffie Terminal to accommodate planned production. 4.3 Proximity to Population Centers The Property lies in close proximity to two large population centers. The city of Tuscaloosa lies approximately 27 miles south and Birmingham lies about 36 miles east of the proposed mine site. The Tuscaloosa and Birmingham metropolitan areas have populations of approximately 250 thousand and 1.2 million respectively (as of July 2018). Both areas have large industrial and manufacturing bases with employers such as Honda, Michelin and Mercedes-Benz having production facilities in the area. The city of Birmingham is home to the Birmingham-Shuttlesworth International Airport which handles close to 3-million passengers annually. 4.4 Climate and Length of Operating Season The typical climate in this portion of Alabama is rather humid but temperate. The average annual temperature is 66 degrees Fahrenheit. The climate is hot during the summer when temperatures are typically in the 90-degree Fahrenheit range and cool during the winter when temperatures are typically in the upper 40-degree Fahrenheit range. The warmest month is generally July, and the coldest month is generally January. Alabama receives on average 56 inches of rainfall per year. The area is somewhat prone to severe thunderstorms resulting in occasional tornado activity and the inland effects of seasonal hurricanes. Seasonal variations in climate typically do not affect underground mining in the area, however, weather events could potentially impact the efficiency of surface and preparation plant operations on a very limited basis. 4.5 Infrastructure Infrastructure in the area surrounding the Blue Creek site is very diverse, well established and robust due to the large populations and current industrial activity in the surrounding metropolitan areas of Birmingham and Tuscaloosa. All of the primary infrastructure that the mine will need to operate (power, water, transportation/roads) is available with reasonable access requirements. Below is a list of the regional infrastructure near the proposed Blue Creek operation: MARSHALL MILLER & ASSOCIATES, INC. 27

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Electrical Power The immediate area contains numerous coal-fired power plants producing base-load electricity. Major transmission and distribution lines are located within the area of interest. Alabama Power is the local utility which will provide electricity for the Project. Water and Sewer Public water is available locally through Oakman Water Works, Inc. No public sewer systems are available. Roads The area is serviced by an extensive network of well-maintained, federal, state and county highways in close proximity to the proposed mine site. Railroads A major commercial railroad is located along the western edge of the area of interest. Barge The Black Warrior River, located east of the Property, provides a means of barge transportation. Airports Birmingham-Shuttlesworth International Airport is located approximately 40 miles to the east. Mining Service Providers, The Property is well serviced by major mining equipment manufacturers, Equipment Manufacturers rebuild facilities, and mine supply vendors. Specialized mining service and Supply Companies providers including slope, shaft, and preparation plant construction companies are located in the immediate area. Hospitals – Ambulance, There are numerous fully functioning hospitals (including major trauma Med Flights centers) within a 50-mile radius of the area of interest. The area is serviced by a network of public and private ambulance and helicopter medical flight providers. Emergency Services – Fire, There are numerous fire departments and emergency medical service (EMS) Police providers within a 50-mile radius of the proposed mine site. The area is well serviced by a large network of federal, state and local law enforcement agencies with central dispatch and communications systems, including emergency 911 services. Schools The region has a well-developed public education network consisting of federal, state and local government-backed schools as well as privately funded schools. These include elementary, middle, and high schools, as well as technical and vocational schools. College/University The region contains numerous colleges and universities as well as well-established mining universities and training centers. Namely, the University of Alabama is located in the city of Tuscaloosa and offers scientific and engineering degrees. MARSHALL MILLER & ASSOCIATES, INC. 28

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 5 History 5.1 Previous Operation The Property has gone through multiple ownership changes throughout its history. Prior to Warrior Met, the Property was controlled by Walter, which acquired the rights to the Property in 2010 through purchase from Chevron. Exploration and development efforts have been ongoing throughout the tenures of various owners. Although this particular project site has no operational history of its own, the region in general has a long, successful history of mining similar projects. There are currently four operating underground longwall operations mining the Mary Lee and Blue Creek seams on adjacent properties. Warrior Met operates two of the four mines, one of which utilizes two independent longwalls for coal production. 5.2 Previous Exploration The Property has been extensively explored as early as 1957 by subsurface drilling efforts carried out by numerous entities, most of which were completed prior to acquisition by Warrior Met including: Tennessee Coal, Iron & Railroad Company; U.S. Steel; The Pittsburgh & Midway (P&M) Coal Mining Company/Chevron; and Walter. The majority of the drilling was accomplished by means of conventional core hole exploration and air rotary drilling with geophysical logging for CBM wells. 6 Geological Setting, Mineralization and Deposit 6.1 Regional, Local and Property Geology The Black Warrior coal basin (BWB), which encompasses the subject Property, is a foreland basin covering approximately 23,000 square miles (59,570 square kilometers) of northwestern and central Alabama. The basin extends approximately 230 miles from west to east and 188 miles from north to south. The BWB lies within the Cumberland Plateau portion of the Appalachian Highlands and contains Pennsylvanian System (300 million years) sedimentary coal-bearing strata of the Upper Pottsville Formation. Metallurgical coal deposits in northern Alabama are divided into three coal fields; the Black Warrior, the Cahaba, and the Coosa, of which the Black Warrior is the largest in both size and productivity. Of the coal groups within the BWB, historically the most dominant is the Mary Lee group (see Figure 6-1). This sequence is “tagged” or identified with a 4-digit numeric system that generally includes the following strata (in descending stratigraphic order): > 7200 / 7300 – New Castle (typically present as Upper and Lower benches), 30 to 50 feet above the Mary Lee seam MARSHALL MILLER & ASSOCIATES, INC. 29

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary > 7400 – Mary Lee seam > 7450 – Middleman (rock parting) > 7480 – Rider seam (not always present) – included as part of the Middleman > 7490 – Parting between the Rider and Blue Creek seams (not always present) – included as part of the Middleman > 7500 – Blue Creek seam > 7600 – Jagger seam, where present, typically a few feet to tens of feet below the Blue Creek; however, may locally become part of the mineable section with the overlying Blue Creek seam. Figure 6-1: Geologic Column of the Mary Lee – Blue Creek Sequence MARSHALL MILLER & ASSOCIATES, INC. 30

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary The BWB is bound by the Alabama Valley and Ridge, Highland Rim, and East Gulf Coastal Plain physiographic providences. The southwestern and southeastern margins of the basin are terminated by frontal thrust faulting of the Ouachita and Appalachian orogeny. The basin has regionally southwestward dipping strata that are overlain by Cretaceous and Tertiary age deposits. The major structural feature within the basin is the Sequatachie anticline, which trends northeast to southwest between the Arkadelphia and Coalburg synclines. Structurally, coal horizons are typically characterized as gently dipping to the southwest and contain minor folds. However, the regional trend has locally been significantly modified by the presence of a prominent structural feature referred to as the Wiley Dome (with relief of several hundreds of feet), which is present on the Blue Creek property, between the east and west areas of the mine plan. A smaller scale fold referred to as the Whitson anticline is present north of the Wiley dome. Faulting is widespread across the basin with high-angle, scissor-type normal faults and fault grabens common, which are typically oriented in a southeast to northwest alignment. Vertical displacement typically varies from only a few feet to as much as 350 feet. Multiple published and in-house reports have been compiled and examined during the course of this evaluation, and subsequently compared with the data shown on the base-of-seam structure for the Blue Creek seam. While faulting on the subject property generally reflects the same regional southeast to northwest pattern, a zone of inferred low-angle faulting (originally identified from a US Steel 1983 report) has been identified on the Property, nearly perpendicular to the regional fault orientation. The dip of this low-angle fault zone has been estimated at approximately 30 to 35 degrees, in contrast to the nearly vertical faults identified elsewhere in the basin. Prior studies as well as recent exploration on the Property have identified locations where the subject coal beds are locally faulted and replaced by fault gouge. The orientation of the low-angle fault zone is northeast-to-southwest and is located on the north side of the Wiley Dome; mine areas A and B are separated by this fault zone. 6.2 Mineralization Regional coal rank in the BWB generally ranges from a low-volatile coal in the southeastern portion of the basin to a high-volatile coal to the northwest. Due to the value of the Mary Lee and Blue Creek seams in the low- to medium-volatile coking coal market at its active Mine No. 4 and Mine No. 7 operations (and adjoining mines) to the south and east of the Property, the subject coal seams have been extensively mined in the region. Laboratory data for the Blue Creek Project indicates a typically high volatile (greater than 31% volatile matter) bituminous coal product. Based on analysis of coal samples, the Mary Lee and Blue Creek seams on the Property are considered a high-volatile metallurgical-grade coal product. 6.3 Deposits Sediments of the Upper Pottsville Mary Lee coal zone are Lower Pennsylvanian in age and comprised of cyclic sequences (refer to Figures 1-2 above and 6-2 below) including: sandstone, siltstone/sandy MARSHALL MILLER & ASSOCIATES, INC. 31

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary shale, shale (and occasional marine shale zones), and coal. Located within the middle of the Black Warrior Basin stratigraphic sequence, the Mary Lee and Blue Creek horizon is situated below drainage throughout the Property and is accessible by slope and shafts. General lithologic characteristics of the are described below: > The New Castle seam is present approximately 15 to 50 feet above the Mary Lee seam. > Lithologic composition of the roof strata varies throughout the Property, consisting primarily of a coarsening-upward sequence of shale or sandy shale, with occasional sandstone channels located within the immediate or main roof of the Mary Lee seam. > Although rare, areas where sandstone occupies the immediate roof of the Mary Lee seam have been observed from drilling records, where scouring of the seam may occur locally. Where sandstone channels are present within 4 to 6 feet above the Mary Lee (roof bolt horizon), there is potential for increased drawrock conditions and roof instability beneath the sandstone/shale contact. > The Mary Lee typically averages 1.75 feet within the eastern mine plan area of the Property; and 1.25 feet in the western area. The Mary Lee seam is the lithologically more consistent of the two seams in terms of thickness; however, it generally thins to the west in Area E. Areas where the Mary Lee seam is absent are inferred to more often be associated with structurally faulted horizons than to depositional factors. > The composition of the stratum comprising the Middleman is highly variable and consists of shale, carbonaceous shale, or fireclay, to sandy shale; from a few inches to over 3.0 feet, averaging 1.0 feet to 1.5 feet in thickness. > The Blue Creek seam, which represents the better metallurgical quality of the two seams and typically averages 4.35 feet within the eastern mine plan area of the Property; and 2.65 feet in the western area. The Blue Creek seam is subject to more erratic and abrupt thickness variation than the overlying Mary Lee seam. Reasons for this are not entirely clear but may be the result of: seam splitting; channel incision; differential compaction; presence of contemporaneous (“growth”) faults; or other paleographic factors present during or subsequent to deposition of the Blue Creek paleoswamp. The Blue Creek is typically thicker in the eastern portions of the Property and thins or splits to the west. > The combined thickness of the Mary Lee – Blue Creek typically averages 7.0 feet within the eastern mine plan area of the Property; and 5.0 feet in the western area. Areas within mine plan projections where the combined thickness of the Mary Lee – Blue Creek horizon are less than a minimum cutting height are generally rare, and where this occurs, roof (and/or floor) strata are expected to be excavated as out-of-seam dilution (OSD). > Compositional variability and thickness of the floor strata underlying the Blue Creek seam typically occurs within a coarsening-downward sequence varying from: very soft, thick fireclay within the immediate floor, to sandy fireclay, shale, sandy shale, and finally sandstone within the first three MARSHALL MILLER & ASSOCIATES, INC. 32

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary feet below the seam. Fireclay varies in thickness, from less than a foot to more than 10 feet. Due to inherently high clay content, this stratum is typically moisture-sensitive and may degrade when exposed to water accumulation on the mine floor. Figure 6-2: Generalized Geologic Profile Indicating Dominant Overburden Lithologies 7 Exploration 7.1 Nature and Extent of Exploration Exploration information has largely been collected, analyzed, and summarized by personnel from previous owners of the Property, Warrior Met, and their consultants. Vertical drilling has been the sole method of collecting exploration information since the seam does not outcrop within or near the Property, and there has been no mining on the Property. Spacing and quantity of exploratory drill holes is generally sufficient to define the coal resource within the Property. Initial exploration on the Project was entirely by drilling to collect data for delineation of coal and CBM resources. As a general practice, continuous core hole exploration is physically logged by a professional geologist while CBM holes are geophysically logged. Geophysical information from CBM wells was obtained by Warrior Met’s predecessor from the Geological Survey of Alabama Oil and Gas Board (GSA) and used to determine seam thickness and elevation. 7.1.1 Summary of Exploration Data MM&A was provided with the core hole records or summary information from geophysical logs as summarized below as of December 31, 2022. MARSHALL MILLER & ASSOCIATES, INC. 33

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary > Total number of holes: 1,257 drill holes utilized for mapping purposes. > Total footage: 1,899,000 feet. > Hole depths: ranging from 835 feet to 2,275 feet, averaging 1,525 feet. > Depth to top of Mary Lee seam: ranging from 810 feet to 1,615 feet, averaging 1,255 feet. > A small group of drilling records was identified and categorized as “not honored” for various reasons (poor recovery, faulted, etc.), and as such were ignored for mapping purposes. Additional discussion is provided below in Section 9.1. Much of the coal quality information provided to MM&A consisted of previously summarized data in the form of Microsoft® Excel spreadsheets in an Adobe® PDF (PDF) format. Where available, scanned copies of coal quality sheets and summary reports were also provided. The most recent drill hole quality data (2022) were derived from exploration activity on the Property. Bulk sample analyses obtained from adjacent mines were made available as was one bulk sample from two combined drill holes from which multiple wedged samples were obtained. Extensive exploration in the form of subsurface drilling has been carried out on the Property by numerous entities, most of whose efforts were completed prior to acquisition by Warrior Met. Diamond core, rotary, and CBM drilling are the three primary types of exploration on the Property. Data for correlation and mining conditions are derived from core descriptions and geophysical logging (e-logging). The location of the drilling is shown on the maps included within this report. The concentration of exploration varies across the Property, with the proposed underground mining areas having the highest concentration of drill holes. Drilling on the Property is typically sufficient for delineation of potential underground mineable benches. The M-series and S-series core holes were typically logged by professional geologists, while the remaining core hole data comes from simplified driller’s logs, which often lack specific details regarding geotechnical conditions and specific geology, making correlations and floor and roof conditions difficult to determine. Geophysical logging (e-logging) techniques, by contrast, document specific details useful for geologic interpretation and mining conditions. Mapping of future mining conditions is derived from data-compiled from a variety of past and present exploration programs, but projections and assumptions can be made within a reasonable degree of certainty. Due to the long history of exploration by various parties on the Property, a wide variety of survey techniques exist for documentation of data point locations. Many of the older exploration drill holes appear to have been located by survey. However, some holes appear to have been approximately located using USGS topography maps or other methods which are less accurate. Therefore, discretion had to be used regarding the accuracy for the location and ground surface elevation of some of these older drill holes. In instances where a drill hole location (or associated coal seam elevations) appeared to be inconsistent with the overall structural trend (or surface topography for surface-mineable areas), the data point was not honored for geological modeling. Others with apparently minor variances were MARSHALL MILLER & ASSOCIATES, INC. 34

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary adjusted and then used by MM&A. Moreover, MM&A compiled topographic map files from the USDA website, using 1-meter resolution LIDAR Digital Elevation Models (DEM’s). Locations of all drill holes on the Property are shown on Figure 7-1 below. Figure 7-1: Drill Hole Location Map MARSHALL MILLER & ASSOCIATES, INC. 35

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 7.2 Non-Drilling Procedures and Parameters Aside from exploration-based drilling and drilling associated with gas development, no additional information specific to the subject reserve’s thickness and quality characteristics is available. The coal reserve is approximately 1,200 to 1,300 feet below drainage across the Property, eliminating the potential of any outcrop examination. Information from mines on adjacent properties does provide some indication regarding anticipated structural trends and thickness continuity. Such parameters have been considered by MM&A in this TRS. 7.3 Drilling Procedures Core drilling methods utilize NX-size (21/ inch) or similar-sized core cylinders to recover core samples, 8 which can be used to delineate geologic characteristics, and for coal quality testing. In addition to the core holes, rotary drilled holes also exist on most of the Property. Data for the rotary drilled holes are mainly derived from downhole geophysical logs, which are used to interpret coal and rock thickness and depth since logging of the drill cuttings is not reliable. CBM holes are always logged geophysically, and the resulting interpreted data are incorporated into the geological model. Exploratory drilling generally requires drilling to depths from 800 to 1,600 feet to penetrate the target coal seams on the Property. A wide variety of core-logging techniques have been implemented on the Property. For many of the core holes, the primary data source is a generalized lithology description by the driller, while others were logged by a professional geologist. These drilling logs were provided to MM&A as a geological database. MM&A geologists were not involved in the production of original core logs but did perform a basic check of information within the provided database. 7.4 Hydrogeology 7.4.1 Introduction The hydrogeologic aspects of the project area have been assessed based on previous hydrogeologic study specific to the area, permitting documents, geologic logging records, and experience from other mines in the region. The assessment focuses on the potential for groundwater inflow to the proposed mine. As the majority of available geologic and hydrogeologic information is contained in Areas A, B, C and D, the current hydrogeological summary is most relevant to these areas but may also be applicable to Area E. Water quality data associated with the Mary Lee and Blue Creek coal horizons in the project area is not available. As such, water quality expectations specific to groundwater inflow to the mine have not been addressed. In general, the results of the current evaluation suggest that the quantity of groundwater inflow to the proposed mine is not likely to cause significant concern in most areas. Previous hydrogeologic assessment of the subject area and regional experience identifies that larger and persistent fracture MARSHALL MILLER & ASSOCIATES, INC. 36

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary zones, often those with high angle or vertical faults and fractures, have the greatest potential to convey larger volumes of water into the mine, especially in areas affected by longwall mining subsidence. While there are numerous larger faults and fracture zones identified in the project area, the current mine plan significantly avoids major areas of hydrogeologic concern identified via previous hydrogeologic assessment of the Project. 7.4.2 Summary of Hydrogeologic Findings In general, the proposed mining is not expected to experience mine-wide, extensive water inflow issues, and in fact, most of the mine may be expected to be relatively dry. However, zones of significant faulting and fracturing do exist in the project area, and experiences in other mines in the region do suggest that the potential for significant water inflow via faults and fracture zones coupled with longwall mining-induced fractures does exist, especially where there is potential for interaction with surface water features. The current mine plan layout avoids the majority of potentially problematic areas, as designated by a previous assessment by others. The available hydrogeologic information for the project area indicates that significant water inflow to the mine is more likely to be associated with areas where longwall mining approaches areas of natural faulting and fracturing. In addition, water inflows in such areas are likely to be enhanced by proximity and connection of the combination of longwall mining-induced fractures and natural fractures to surface water bodies that may recharge water into the system. As a result, future drilling activity (core drilling or rotary bit) should include collection of fracture orientation and fracture frequency data. Data collection should include downhole geophysical techniques that allow for in situ measurement of discontinuity orientations. In addition, any core holes drilled should be logged with specific attention given to fracture characteristics, including frequency, orientation, weathering, and infilling. Given the vertical nature of a significant portion of the known fractures, angled drilling may be required to intersect and define the fracture zones. As mining approaches known fracture and fault zones, the extent, character, and water-bearing potential of the zones should be investigated. Such investigations may include combinations of angled drilling, downhole geophysics, and hydraulic conductivity testing. While many of the major faults and fracture zones have been identified, the extent to which fracturing extends from the mapped lines is unknown and may vary by area. Previous investigation suggests that relatively intense jointing may extend out to approximately 200 feet on either side of some faults, with the most intense fracturing only extending to approximately five feet on each side of known faults. As previously mentioned, the current assessment does not address the expected chemical quality of water to be encountered in the proposed mine. Groundwater quality data at the Mary Lee and Blue Creek horizon does not appear to be available. Future exploration activities should consider collection of water samples from the proposed mine horizon, if possible, to provide an initial means for evaluation. Future groundwater quality investigation should include analyses for metals (e.g., iron, manganese, and select “trace” metals), major ions (ex: chloride, sodium, sulfate, magnesium, calcium, MARSHALL MILLER & ASSOCIATES, INC. 37

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary and potassium), pH, Total Suspended Solids (TSS), Total Dissolved Solids (TDS), and Specific Conductance (SC). Recent guidance from the United States Environmental Protection Agency (USEPA) suggests that coal mine operations with discharges having SC values greater than 300 microsiemens per centimeter (µS/cm) should be closely monitored and operations with discharges of greater than 500 µS/cm should be required to take mitigative action. The guidance is not law and enforcement of such standards is unknown. 7.5 Geotechnical Data Geotechnical data specific to the expected mine horizon is somewhat limited and has not been systematically collected as part of the mineral exploration drilling process. However, a report completed by Park (1989) contains site-specific laboratory and core logging geotechnical information for seven holes centrally located within the proposed mine area. Available data includes laboratory results for roof and floor rock and coal, for specific gravity, Uniaxial Compressive Strength (UCS), elastic modulus, Poisson’s Ratio, angle of internal friction, and cohesion. Core logging geotechnical data includes Rock Quality Designation (RQD) values for the roof and floor of the proposed mine. Additional UCS values, estimated from Point Load Tests (PLT), are also available for one additional hole located along Little Yellow Creek. The available data suggests that the proposed mine area may have the potential for some mine floor instability. Incorporation of additional geotechnical data collection via core drilling and downhole geophysics is recommended. Pillar sizing and design for the proposed mine is similar to that of Warrior Met’s two nearby active mines, and consistent with region-specific design equations initially developed in the 1980’s. The stability of the current pillar designs has also been verified using the Analysis of Coal Pillar Stability (ACPS) software. The pillar design incorporates a yield pillar concept that may mitigate some of the potential floor heave concerns. 8 Sample Preparation Analyses and Security 8.1 Prior to Sending to the Lab All of the coal samples have been obtained from the Property by subsurface exploration using core drilling techniques. The protocol for preparing and testing the samples has varied over time and is not well documented for the older holes drilled on the Property. Typical core-drilling sampling methods for coal in the United States involves drilling through the seam, removing the core from the barrel, describing the lithology, wrapping the sample in a plastic sleeve and placing it lengthwise into a covered core box, marking hole ID and depth intervals on each box and lid, and allowing the core to be delivered to a laboratory in correct stratigraphic order, with original moisture content. This process has been the norm for both historical practices at Warrior Met’s active and depleted operations and ongoing exploration activities at the Blue Creek property. MARSHALL MILLER & ASSOCIATES, INC. 38

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary This work is typically performed by the supervising driller, geologist, or company personnel. Samples are most often delivered to the company after each shift or acquired by company personnel or representatives. Most of the coal core samples were obtained by previous or current operators on the Property. MM&A did not participate in the collection, sampling and analysis of the core samples. However, it is reasonable to assume, given the consistency of quality from previous operators, that these samples were generally collected and processed under industry best practices. This assumption is based on MM&A’s familiarity with the operating companies and the companies used to perform the analyses. 8.2 Lab Procedures Coal-quality testing has been performed over many years by operating companies using different laboratories and testing regimens. Some of the samples have raw analyses and washabilities on the full seam (with coal and rock parting layers co-mingled) and are mainly useful for characterizing the coal quality for projected production from underground mining. Other samples have coal and rock analyzed separately, the results of which can be manipulated to forecast underground mining quality. Care has been taken to use only those analyses that are representative of the coal quality parameters for the appropriate mining type for each sample. Standard procedure upon receipt of core samples by the testing laboratory is to: 1) log the depth and thickness of the sample; then 2) perform testing as specified by a representative of the operating company. Each sample is then analyzed in accordance with procedures defined under American Society for Testing and Materials (ASTM) standards including, but not limited to washability (ASTM D4371); ash (ASTM D3174); sulfur (ASTM D4239); Btu/lb. (ASTM D5865); volatile matter (ASTM D3175); Free Swell Index (FSI) (ASTM D720). While not confirmed by MM&A, it is assumed that best practices and ASTM (or equivalent standards at the time of testing) were utilized in laboratory quality testing. 8.3 Opinion of Qualified Person Based upon the consistency of quality information derived from multiple historical and ongoing exploration campaigns, MM&A finds the security protocols of past an ongoing exploration to be sufficient for resource and reserve documentation. Warrior Met’s geology staff reports that it currently manages all exploration-based logistics, including core/channel sampling logging, transportation of material to the requisite laboratories, and the population/security of samples and appropriate laboratory forms. Currently, Central Lab handles the majority of coal analytical procedures related to exploration. Occasionally, Coal Tech (Pittsburgh, PA) will also analyze samples. Procedures utilized by Warrior Met are aligned with typical protocols used in the coal industry. MARSHALL MILLER & ASSOCIATES, INC. 39

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 9 Data Verification 9.1 Procedures of Qualified Person MM&A reviewed the Warrior Met supplied digital geologic database, consisting of data records which include drill hole and coal quality information for holes that lie within and adjacent to the Property. To the extent available, scanned copies of original documents were provided for much of the Property (mining areas A, B, C, D, and E1, E2, and E3), and these were reviewed by MM&A on a test case basis. These sources comprise the primary data utilized in the evaluation of reserves within the Property. Warrior Met maintains copies of geologist field observation logs for each core hole drilled by Warrior Met and those that could be obtained from other entities and has compiled the core hole data into a digital geologic database consisting of approximately 1,257 drill holes, supplemented with additional GSA log data interpreted by MM&A. Of these, there are approximately 775 active CBM wells located in the project area operated by Warrior Met’s gas division, with an additional 455 wells operated by Urban Oil and Gas. CBM wells are typically drilled on approximately 40-acre centers, which equates to roughly ¹⁄₄-mile spacing. Geophysical logs were used wherever available to assist in confirming seam correlation and to verify seam thickness measurements. These are highly useful tools not only for identification of seam thickness, but also to determine intervals between seams; the relative location and amount of displacement found adjacent to faults as depicted on the maps can also be evaluated with this type of data. The level of accuracy for geophysical logs can be broadly grouped into one of three categories: low-resolution, intermediate-resolution, and high-resolution, due to: vintage of the logs, quality of scanned images, suite of tools used to log the well, source-to-detector spacing, scale of presentation, and so forth. Geophysical logs on the Property are of two general types: > CBM wells from various logging companies, that are publicly available from the GSA and have previously been reviewed and recorded by Warrior Met geologists for entry in the Warrior Met geological database. There are approximately 950 gas well geophysical logs within the Property, for which copies of approximately 750 scanned logs or LAS files (within all areas of the mine) were provided and reviewed on a test case basis by MM&A. Classification of these logs ranges from low- to intermediate-resolution. > Core holes drilled for P&M and geophysically logged by MM&A between 1991 and 1995, of which there are 87 high-resolution geophysical logs incorporated into this evaluation, most of which are located in the eastern portion of the Property (with a few scattered in the west). Copies of the MM&A geophysical logs are maintained within its archives located in Bluefield, Virginia. (An additional 23 holes were geophysically logged by MM&A on the Property; however, coordinates are unavailable and consequently have not been utilized in this evaluation.) MARSHALL MILLER & ASSOCIATES, INC. 40

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary A significant effort was put into verifying the integrity of the database. As noted previously, an additional group of drilling records was identified and categorized as not honored and ignored for mapping purposes for the following reasons: —possessing poor or suspect core recovery; or —thickness impacted by the influence of tectonic faulting; or —seam thickness information was interpreted from older vintage and/or lower resolution geophysical logs. —original records were unavailable from which to confirm suspect information. Once this was completed, stratigraphic columnar sections were generated in select areas using cross-sectional analysis to establish or confirm coal-seam correlations. Furthermore, reported drill hole collar elevations were checked and verified utilizing a LIDAR topographic model, and adjustments were made as deemed appropriate. When the database was fully vetted, seam thickness, base-of-seam elevation, roof and floor lithology, and overburden maps were finally generated for use in the mine planning process. 9.2 Limitations As with any exploration program, localized geologic anomalies cannot always be identified; however, the greater the density of samples taken, the lower the risk. Once an area is identified as being of interest for inclusion in the mine plan, additional samples are normally collected to reduce the risk within those specific areas. In general, provision is made in the mine planning portion of the study to allow for localized anomalies that are typically classed more as a nuisance than a hinderance. 9.3 Opinion of Qualified Person In the eastern portion of the Property (Mining Areas A through E1), sufficient data has been obtained through various exploration and sampling programs to support the geological interpretations of seam structure and thickness for the mineable coal horizons. The data are of sufficient quantity and reliability to reasonably support the coal resource and coal reserve estimates in this TRS, compliant with 2021 SEC Standards. Acquisition of data (specifically core drilling and coal quality testing) are ongoing within the western and southwestern portions of the Property (mining Areas E2 and E3). Thus, resource tonnage estimates presented herein specific to mining Areas E2 and E3 are based upon preliminary results. It is Warrior Met’s and MM&A’s intentions to elevate the classification of such resources in Area E2 and E3 to reserves via further geologic analysis and an ongoing exploration program to determine quality characteristics of the subject coal. Similarly, exploration drilling completed in 2022 allowed a portion of the former Area E (E1) to transfer from resource to reserve. MARSHALL MILLER & ASSOCIATES, INC. 41

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary 10 Mineral Processing and Metallurgical Testing 10.1 Testing Procedures Coal quality data was available for coal samples from the legacy core holes within the resource area. Because these samples were obtained by different entities at different times, some variability exists between sampling and/or testing procedures (i.e., variable float gravity, coal only sampling, etc.). Data from three sets of borings have been provided and are referenced as the M-series, NR5-series, and S -series of holes. 10.1.1 M-Series Holes The M-series of borings were performed by U.S. Steel and the samples were tested by the U.S. Steel’s Research Division. The M-Series borings are further sub-divided into two groups based on the reports in which they were issued. Borings M-360 through M-808 were reported in a memorandum from the U.S. Steel Research Division, “Evaluation of Mary Lee/Blue Creek-Seam Coal Drill Cores and Composite Samples from the West-West Wilmington Area, Tuscaloosa County, Alabama, December 1980”. From the report, the total seam, including the Middleman, was processed in laboratory analysis. The samples were crushed to minus ¹⁄₄-inch, and then split for washability and composite analysis. These samples were evaluated at cumulative float specific gravities of 1.35 and 1.55. The resulting samples were tested for Proximate Analysis, Gieseler Plasticity, Free Swelling Index, Hardgrove Grindability, and Petrographic Analysis. The second set of M-series borings, M-812 through M-817, were reported in a study issued by U.S. Steel, “West Wilmington Coal Project Tuscaloosa County, Alabama, 1983”. Again, the total seam was considered in this study, including the Middleman. The samples were crushed to minus ¹⁄₄-inch and then subjected to washability analysis. The samples were evaluated at a cumulative float specific gravity of 1.55. This sample was then divided, half of which was retained for further analysis. Half of the sample was re-analyzed at a float at a specific gravity of 1.37. The resulting samples were subjected to the following tests: Proximate Analysis, Total Sulfur, Ultimate Analysis, Calorific Value Analysis, Gieseler Plasticity, Free Swelling Index, Ash Composition, Ash Fusion Temperature, and Petrographic Analysis. 10.1.2 NR5-Series Holes The NR5-series of borings were performed by P&M. A report summarizing the NR5 series of borings has not been provided or reviewed by MM&A. Inferences have been made based on the provided laboratory data sheets. The Mary Lee and Blue Creek samples were processed separately for these borings, and no Middleman was included. It is unknown if the samples were crushed prior to the washability analysis. These samples were only floated at a cumulative specific gravity of 1.7. The resulting samples were tested by Commercial Testing & Engineering Company with report dates in 1990, 1991, and 1992. The tests performed on these samples include Proximate Analysis, Ultimate Analysis, Ash Fusion Temperature, Forms of Sulfur, Water Soluble Alkalis, Hardgrove Grindability, MARSHALL MILLER & ASSOCIATES, INC. 42

Warrior Met Coal, Inc. Blue Creek Property Year End 2022 Reserve Analysis Technical Report Summary Equilibrium Moisture, Free Swelling Index, Ash Composition, Base-Acid Ratio, Fouling Index, and Slagging Index. 10.1.3 S-Series Holes The S-series of borings were performed by Walter. Since property acquisition, Warrior Met has continued to use the S-series designation for core holes. As with the NR5-series holes, no report has been provided summarizing the sampling and testing methods for the S-series borings. Some inferences have been made from the laboratory data sheets that have been provided. The Mary Lee and Blue Creek samples from these borings were processed separately and the Middleman was not included in the analysis. It is unknown if the samples were crushed prior to the washability analysis. These samples were tested at specific gravities of 1.4, 1.5, 1.6, and 1.7. The resulting samples were tested for ash and sulfur. A composite sample, assumed to be analyzed at a cumulative Float 1.5 specific gravity sample, was tested for a Proximate Analysis and Free Swelling Index. These basic coal quality tests were performed by Warrior Met’s in-house lab. Over the years, select samples have been sent to various laboratories including: SGS; Coal Tech Petrographic Associates; and Precision Testing Laboratory (Precision) for more specialized testing. These analyses include Ultimate Analysis, Hardgrove Grindability, Ash Fusion Temperature, Ash Composition, Coke Reactivity Index, Coke Strength After Reaction, Gieseler Plasticity, and Petrographic Analysis. Report dates for the S-series borings include data from 2009 through 2021. 10.2 Warrior Met’s Current Exploration Procedures During Warrior Met’s 2022 exploration program on the Property, three (3) fully cored or spot-cored holes have been drilled. Coal samples for 2 of the 3 holes, located in Area E1, were subsequently delivered to Warrior Met’s laboratory for analytical testing, the results of which have been included in this report. The third hole, located in Area A, is still being drilled for additional wedge samples, which will subsequently be analyzed when the hole has been completed. 10.3 Quality Assessment Coal quality parameters (yield, ash and sulfur) at a cumulative float gravity of 1.55 were used to assess the consistency of the data across the three series described above. MM&A reconstituted a combined Mary Lee, Middleman and Blue Creek section for each honored drill hole. In instances where a float gravity of 1.55 was not tested, appropriate values were determined using graphical interpolation of similar holes. These values were processed using Carlson Software and the grids were generated to contour and assess consistency across the mine property. MM&A determined that in-seam yield and product ash were generally consistent across Areas A through D when assessing the total mineable section. Product sulfur appears to generally increase gradually from the eastern to western portion of the Property. Further exploration is recommended to confirm or dispute this trend. MARSHALL MILLER & ASSOCIATES, INC. 43

The results of these exploration programs have been assembled and tabulated in a Microsoft® Excel spreadsheet to determine the basic statistical parameters (average, maximum, minimum) of typical chemical and physical coal quality properties. The data has been tabulated for the Mary Lee, Blue Creek, and Total Seam (including the Middleman) by density class. For Areas A through D, the basic statistical parameters for each seam at a float 1.50 gravity, or nearest available gravity, are shown below in Table 10-1. Samples that were deemed to be erroneous were excluded from calculations. Table 10-1: Yield, Clean Ash and Sulfur (1.5 SG), Eastern Mining Areas A Through D Mary Lee Blue Creek Total Seam Float 1.5 Float 1.5 Float 1.55 % Rec. % Ash % Sulfur % Rec. % Ash % Sulfur % Rec. % Ash % Sulfur % Vol. Average 88.15 12.77 0.91 91.90 8.42 0.60 68.53 9.35 0.70 28.10 Maximum 96.26 14.26 1.20 98.01 10.26 0.79 80.30 12.90 1.21 30.10 Minimum 76.09 11.51 0.71 73.50 6.98 0.52 44.60 7.69 0.50 26.10 No. of Samples 18 18 18 19 19 19 59 59 59 58 Coal quality for Area E1 is shown on Table 10-2 below. Table 10-2: Yield, Clean Ash and Sulfur (1.5 SG), Eastern Mining Area E1 Mary Lee Blue Creek Total Seam Float 1.5 Float 1.5 Float 1.55 % Rec. % Ash % Sulfur % Rec. % Ash % Sulfur % Rec. % Ash % Sulfur % Vol. Average 86.44 13.49 1.39 84.56 10.65 0.88 84.12 11.34 1.21 28.1 Maximum 87.09 13.86 1.85 85.68 10.85 0.93 84.12 11.34 1.21 30.1 Minimum 85.78 13.12 0.93 83.43 10.44 0.83 84.12 11.34 1.21 26.1 No. of Samples 2 2 2 2 2 2 1 1 1 58 As stated previously, the method of sampling, testing, and reporting was not consistent across the different data series. Due to the lack of summary reports describing the testing procedures, observations of the reported data were used to determine when a combined sample (i.e., combination of Mary Lee and Blue Creek horizons) sample did or did not include the middleman parting. This observation was used to exclude data when necessary as well as identify what borings required further data processing for inclusion in MM&A’s analysis. Where quality results were deemed not useful or unrepresentative, those results were excluded (not honored) from statistical analyses and coal quality modeling but are included within detailed coal quality tables in MM&A’s files for informational purposes with the appropriate qualifying comments. 10.4 Derivation of Product Yield Generalized washabilities (i.e., cumulative float tables at various gravities) were produced for both the Mary Lee and Blue Creek seams. Due to the lack of sizing data, the washabilities are presented on a whole (by zero) basis with top-sizes varying between 2 inches and one-quarter inch, depending on the vintage of the drill hole. Averages were generated for each respective float specific gravity. This introduced some bias, as certain gravities included analysis for more holes, because not all holes were MARSHALL MILLER & ASSOCIATES, INC. 44

evaluated at the same gravity increments. Efforts were made to include as much of the provided washability data as possible. Data points that were deemed to be erroneous were omitted from the analysis. Likewise, the M-series data was not included in the average because its test work included the parting between the Mary Lee and Blue Creek seams. Due to the thickness variability of the respective Mary Lee and Blue Creek seams, it was determined that yields were to be calculated independently for each seam, with the assumption that all Middleman material reports to reject circuitry. Generalized washabilities for each seam were produced by averaging the cumulative float data from selected NR5 and S-series boreholes. Table 10-3 shows the average washabilities of the two seams as well as the average combined washability excluding the middleman. The combined washability was calculated by weight averaging the individual seam washabilities with a ratio of 2.32 tonnes of Blue Creek coal per 1 ton of Mary Lee. This ratio is based on the life-of-mine tonnage model which results in the same ratio of Blue Creek to Mary Lee tonnes. Table 10-3: Washability for the Mary Lee, Blue Creek, and Combined Seam (Excluding Middleman), Dry Basis, Mining Areas A Through D Incremental Cumulative (%) (%) (%) (%) (%) (%) Yield Ash Sulfur Yield Ash Sulfur Mary Lee 1.4 77.55 11.75 0.82 77.55 11.75 0.82 1.5 10.40 20.50 1.51 87.95 12.79 0.90 1.6 2.73 29.31 2.56 90.67 13.28 0.95 1.7 1.35 40.02 3.19 92.02 13.67 0.98 Sink 7.98 66.14 2.16 100.00 17.86 1.08 Blue Creek 1.4 82.50 7.42 0.61 82.50 7.42 0.61 1.5 8.77 17.75 0.62 91.26 8.41 0.61 1.6 2.64 26.32 0.88 93.90 8.92 0.62 1.7 1.33 33.98 1.34 95.23 9.27 0.63 Sink 4.77 65.26 0.83 100.00 11.93 0.64 Combined Mary Lee and Blue Creek, Excluding Middleman 1.4 81.01 8.67 0.67 81.01 8.67 0.67 1.5 9.26 18.68 0.92 90.26 9.70 0.69 1.6 2.67 27.24 1.40 92.93 10.20 0.71 1.7 1.34 35.81 1.90 94.27 10.56 0.73 Sink 5.73 65.63 1.39 100.00 13.72 0.77 All the provided exploration data was from exploration core testing. Quality evaluations associated with slim core testing (including NX-sized core) tends to produce a cleaner ash and higher yield than is achievable during the mining the process. This is due to the small top-size of the core samples which provide greater coal-ash liberation than what would be expected in a typical run-of-mine product. Additionally, laboratory results are theoretical and do not account for plant inefficiencies or losses. MM&A modified yields and clean ash values as presented in Table 10-3 above to reflect a 96-percent plant efficiency and a 0.25-percent gain in clean ash. Such values were derived when comparing core sample clean ashes to those associated with channel samples which are more reflective of ROM sizing. MARSHALL MILLER & ASSOCIATES, INC. 45

Year End 2022 Reserve Analysis Technical Report Summary Table 10-4 below shows the average cumulative washability data after an ash modifier of 0.25-percent and an organic efficiency of 96-percent have been applied to the data. Table 10-4: Washability for the Mary Lee, Blue Creek, and Combined Seam (Excluding Middleman), Dry Basis, After Yield and Ash Adjustment; Mining Areas A Through D Cumulative (%) (%) (%) Float Yield Ash Sulfur Mary Lee 1.4 74.45 12.00 0.82 1.5 84.43 13.04 0.89 1.6 87.05 13.53 0.94 1.7 88.34 13.92 0.97 Sink 100.00 17.86 1.08 Blue Creek 1.4 79.20 7.67 0.61 1.5 87.61 8.66 0.61 1.6 90.15 9.17 0.62 1.7 91.43 9.52 0.63 Sink 100.00 11.93 0.64 Mary Lee and Blue Creek Combined 1.4 77.77 8.92 0.67 1.5 86.65 9.95 0.69 1.6 89.21 10.45 0.71 1.7 90.50 10.81 0.73 Sink 100.00 13.72 0.77 Examining the total seam washability shows that washing the combined coal at a 1.50 specific gravity results in a product ash of 10-percent with yields approaching 87-percent on a dry basis. Projecting this cut point on an individual seam basis suggests respective yields of 88-percent and 85-percent for the Blue Creek and Mary Lee seams, inclusive of a 96-percent plant efficiency factor. Average washabilities suggest individual dry product ashes of 8.7-percent and 13.0-percent for the Blue Creek and Mary Lee seams. As the relative thicknesses and subsequent tonnage ratios vary from the average 2.32 to 1 (Blue Creek to Mary Lee), total clean ash will fluctuate. Production timing as incorporated in financial modeling suggests annual average clean ash variations to be in the range of 0.5-percent. Localized higher ash zones and zones with relatively low percentages of Blue Creek coal will result in higher ash fluctuations. Such fluctuations in quality can be mitigated by stockpiling raw and clean coal and blending. Due to the minimal drilling associated with Area E1, wash recoveries were reduced by a factor of 10-percent in lieu of a detailed washability analysis. Further, all tons associated with Area E1 were defaulted to an “indicated” status, reflective of the amount of supporting coal quality information and information which suggests elevated ash and sulfur. 10.5 Relationship of Tests to the Whole The actual quality of shipped coal will likely vary due to the following factors: 1) particle size of the coal fed to the plant; 2) specific gravity of the float media in use at the preparation plant; 3) type of plant MARSHALL MILLER & ASSOCIATES, INC. 46

circuit(s); 4) efficiency of the plant circuit(s); 5) the moisture content of the final product; and 6) customer requirements. However, once baseline coal quality is established, additional sampling programs and testing procedures can be implemented to assist with: 1) predicting additionally refined plant yields which account for anticipated particle sizes that reflect a typical ROM product and include out-of-seam dilution (OSD); 2) assessing optimum specific gravity of preparation plant float media to meet product specifications; and 3) further designing and/or modifying plant circuit(s) if necessary. In general, the data obtained thus far shows that the quality attributes are reasonably consistent and should allow for predictability of the product coal quality from the subject seams. 10.6 Lab Information Currently, samples are analyzed at a company-operated coal-testing laboratory located in Brookwood, Alabama. MM&A assumes that laboratory testing has followed appropriate ASTM or equivalent standards, including those defined under ASTM standards including, but not limited to: > ASTM D 4371 – Test Method for Determining Washability Characteristics of Coal > ASTM D 3174 – Method for Ash in the Analysis Sample of Coal and Coke > ASTM D 5865 – Test Method for Gross Calorific Value of Coal and Coke > ASTM D 3175 – Test Method for Volatile Matter in the Analysis Sample of Coal and Coke > ASTM D 720 – Test Method for Free-Swelling Index (FSI) of Coal > ASTM D 5515—Test Method for Determination of the Swelling Properties of Bituminous Coal Using a Dilatometer (Arnu) > ASTM D 2639 – Test Method for Plastic Properties of Coal (Gieseler) > ASTM D 1857—Standard Test Method for Fusibility of Coal and Coke Ash > ASTM D 2798 – Microscopical Determination of the Reflectance of Vitrinite in a Polished Specimen of Coal 10.7 Relevant Results, Metallurgical Quality Table 10-4 presents a summary of the ranges of available metallurgical quality data for the combined seams. This data covers samples from various float gravities as well as the total number of samples analyzed per data set. Data from any erroneous holes were excluded from the reported ranges. Detailed metallurgical quality tables are retained in MM&A’s files. Three sets of quality tables provide seam Rheological Information, Petrographic Information, as well as summarize any additional testing. The individual coal sample reports from the various coal testing laboratories are held in the MM&A files and can be provided upon request. MARSHALL MILLER & ASSOCIATES, INC. 47

Table 10-5: Metallurgical Characteristics Total Seam Elemental Ash Analysis Min Max No. of Samples Na2O (Sodium Oxide) + K2O (Potassium Oxide) 1.75 3.76 17 Base / Acid Ratio (in ash) 0.1 0.2 17 Audibert-Arnu Maximum Dilatation 113 180 5 Maximum Contraction -27 -22 5 Gieseler Plasticity Max. Fluidity DDPM (dial divisions per minute) 1300 30000 82 Fluid Temp. (Plastic) Range ºC 71 117 82 Petrographic Indices Hardgrove Grindability Index 54 67 53 Free Swelling Index (FSI) 8 9 66 Mean Max Reflectance % 0.95 1.23 127 Composition Balance Index (CBI) 0.22 1.01 127 Rank Index (Calculated Strength) 3.22 5.18 127 Calculated Stability Factor 30 64.5 21 Coke Reactivity Index (CRI) 31.8 34.5 2 Coke Strength After Reaction (CSR) 45.2 48 2 10.8 Pertinent Results and Opinion of the Qualified Person Wash recovery factors on a seam-by-seam basis, exclusive of dilution material, is summarized in the table below. Additionally, wash recovery estimates on a LOM basis are included, reflective of dilution material. Table 10-6: Summary of Wash Recovery Assumptions Seam Basis Wash Recovery (%) Area A—D Mary Lee Simulations to Achieve 10.2% Ash Product 84.4% Blue Creek 87.6% Area E1 Mary Lee 10% Reduction to 1.50 Float Lab Data 77.8% Blue Creek 76.1% LOM Mary Lee + Blue Creek + Dilution Above Assumptions + Consideration of Dilution 61.4% The Qualified Persons finds that the metallurgical and mineral processing information derived from historical and ongoing exploration campaigns is adequate to document mineral resources and reserves presented herein. The distribution of quality information has been considered in measured and MARSHALL MILLER & ASSOCIATES, INC. 48

indicated resource status, and subsequently in probable and proven reserve status. Warrior Met’s ongoing drilling campaigns are addressing short-term and long-term quality projections. 11 Mineral Resource Estimates MM&A independently created a geologic model to define the coal resources at the Property. Coal resources were estimated as of December 31, 2022. Resources are reported inclusive (Areas A through E1) of coal reserves and exclusive of coal reserves (Areas E2 and E3). Resources for Areas A through E1 presented herein are utilized for mine planning purposes, and subsequently, reserve estimates. Due to constraints imposed by differences in coal quality testing methodology, resources represent in-place coal tonnages and in-place coal quality, exclusive of the interburden between the Mary Lee and Blue Creek seams (a.k.a. Middleman). Ash bands and partings within the Mary Lee and Blue Creek horizons are included in tonnage and quality projections for the property’s resource. Pertinent definitions related to mineral resources are shown below. > Mineral Resource is a concentration or occurrence of material of economic interest in or on the Earth’s crust in such form, grade or quality, and quantity that there are reasonable prospects for economic extraction. A mineral resource is a reasonable estimate of mineralization, taking into account relevant factors such as cut-off grade, likely mining dimensions, location or continuity, that, with the assumed and justifiable technical and economic conditions, is likely to, in whole or in part, become economically extractable. It is not merely an inventory of all mineralization drilled or sampled. > Inferred Mineral Resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. The level of geological uncertainty associated with an inferred mineral resource is too high to apply relevant technical and economic factors likely to influence the prospects of economic extraction in a manner useful for evaluation of economic viability. Because an inferred mineral resource has the lowest level of geological confidence of all mineral resources, which prevents the application of the modifying factors in a manner useful for evaluation of economic viability, an inferred mineral resource may not be considered when assessing the economic viability of a mining project and may not be converted to a mineral reserve. No inferred mineral resources are considered as part of this exercise. > Indicated Mineral Resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of adequate geological evidence and sampling. The level of geological certainty associated with an indicated mineral resource is sufficient to allow a qualified person to apply modifying factors in sufficient detail to support mine planning and evaluation of the economic viability of the deposit. Because an indicated mineral resource has a lower level of confidence than the level of confidence of a measured mineral resource, an indicated mineral resource may only be converted to a probable mineral reserve. MARSHALL MILLER & ASSOCIATES, INC. 49

> Measured Mineral Resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of conclusive geological evidence and sampling. The level of geological certainty associated with a measured mineral resource is sufficient to allow a qualified person to apply modifying factors, as defined in this section, in sufficient detail to support detailed mine planning and final evaluation of the economic viability of the deposit. Because a measured mineral resource has a higher level of confidence than the level of confidence of either an indicated mineral resource or an inferred mineral resource, a measured mineral resource may be converted to a proven mineral reserve or to a probable mineral reserve. 11.1 Assumptions, Parameters and Methodology Geological data were imported into Carlson Mining® (formerly SurvCADD®) geological modelling software in the form of Microsoft® Excel files incorporating drill hole collars, seam and thickness picks, bottom seam elevations and raw and washed coal quality. These data files were validated prior to importing into the software. Once imported, a geologic model was created, reviewed and verified- with a key element being a gridded model of coal seam thickness. Resource tonnes were estimated by using the seam thickness grid based on each valid point of observation and by defining resource confidence arcs around the points of observation. Points of observation for Measured and Indicated confidence arcs were defined for all valid drill holes that intersected the seam using standards deemed acceptable by MM&A based on a detailed geologic evaluation and a statistical analysis of all drill holes within the projected reserve areas as described in Section 11.1.1. The geological evaluation incorporated an analysis of seam thickness related to depositional environments, adjacent roof and floor lithologies, and structural influences. After validating coal seam data and establishing correlations, the thickness and elevation for seams of economic interest were used to generate a geologic model. Due to the reasonable continuity of the coal beds, the principal geological interpretation necessary to define the geometry of the coal deposits is the proper modeling of their thickness and elevation. Both coal thickness and quality data are deemed by MM&A to be reasonably sufficient within the resource areas. Therefore, there is a reasonable level of confidence in the geologic interpretations required for coal resource determination based on the available data and the techniques applied to the data. Table 11-1 below provides the geological mapping and coal tonnage estimation criteria used for the coal resource and reserve evaluation. These cut-off parameters were developed by MM&A based on its experience with comparable mining projects. This experience includes technical and economic evaluations of numerous properties in the region for the purposes of determining the economic viability of the subject coal reserves. Table 11-1: General Reserve and Resource Criteria Item Parameters Technical Notes & Exceptions* • General Reserve Criteria Reserve Classification Reserve and Resource Reliability Categories Reserve (Proven and Probable) To better reflect verified geological information, “arcs” Resource (Measured and Indicated) which represent indicated resource (probable reserve) MARSHALL MILLER & ASSOCIATES, INC. 50

Item Parameters Technical Notes & Exceptions* and measured resource (proven reserve) are limited to those holes in which MM&A verified source data Effective Date of Resource Estimate December 31, 2022 The Property represents a greenfield area and has not been developed as of the date of this report. Effective Date of Reserve Estimate December 31, 2022 The Property represents a greenfield area and has not been developed as of the date of this report. Seam Density Variable, dependent upon seam characteristics (based on available drill hole quality). Density estimates are based upon the relative thickness of the 3 primary constituents of the mineable section, with the Mary Lee, Middleman and Blue Creek respectively modeled at 89, 140 and 85 pounds per cubic foot. • Underground-Mineable Criteria Map Thickness Total seam thickness Minimum Seam Thickness Approximately attributed to an equivalent 3-feet of combined coal thickness between the Mary Lee In some instances, projections extend beyond 3-ft coal and Blue Creek horizons thickness cutoff for contiguous mine plan. Minimum Mining Thickness 5-feet for Longwall Mining; 7-feet for Continuous Mining Sections Minimum In-Seam Wash Recovery Driven by 3-feet coal thickness Wash Recovery Applied to Coal Variable, dependent upon seam characteristics Reserves (based on available drill hole quality). Recovery estimates are based upon the relative thickness of the 3 primary constituents of the mineable section, with the Mary Lee, Middleman and Blue Creek respectively modeled at 77, 0 and 80 percent for mining areas A-D. Simulations utilized to achieve a 10-percent ash product. Out-of-Seam Dilution Thickness for 0 inches Dilution assumed to wash-out of ROM product and is not Run-of-Mine Tonnes Applied to Coal included in saleable reserves. Financial modeling Reserves includes assumption of minimum of 3-inches of Out-of-Seam dilution at 140 lb./ft3 density Mine Barrier Not Applicable—Projections Do Not Border Active or Abandoned Reserves CBM Wells CBM Wells Assumed to be Plugged Ahead of Mining and Mined Through. No reserve/resource reductions considered. Adjustments Applied to Coal Reserves 10 percent moisture increase; 5 percent preparation plant inefficiency (included in aforementioned wash recovery). Longwall panel tonnages further decreased by 5-percent factor to account for uncertainty associated with faulting. 11.1.1 Statistical Analysis for Classification MM&A completed a statistical analysis on drill holes within the reserve boundaries to determine the applicability of the common United States classification system for measured and indicated coal resources. Historically, the United States has assumed that coal within ¹⁄₄ mile of a point of observation represents a measured resource whereas coal between ¹⁄₄ mile and ³⁄₄ mile from a point of observation is classified as indicated. Inferred resources are commonly assumed to be located between ³⁄₄ mile and 3 miles from a point of observation. Per SEC regulations, only measured and indicated resources may be considered for reserve classification, respectively as proven and probable reserves. A general acceptable thickness variation for measured resources is approximately 20 percent. Thickness variations for indicated resources are assumed to average less than 30 percent, which is also comparable with historical standards. MARSHALL MILLER & ASSOCIATES, INC. 51

MM&A extracted drill hole information from within projected reserve areas, which included coordinates (northing and easting) and combined Mary Lee and Blue Creek seam thickness. The drill holes included diamond core, rotary, and CBM holes. Those holes which lacked source data (i.e., lacked high resolution geophysical logs or original drillers logs) were fileted separately. Once the data was extracted, matrices were formed to calculate the distance and percent change in seam thicknesses between each combination of drill holes in the reserve area. Distances were then sorted from smallest to largest and the variation in thicknesses was analyzed as a function of distance between drill holes. Ultimately, the average variation in thicknesses between drill holes at ¹⁄₄-, ³⁄₄- and 3-mile intervals were calculated to determine the applicability of common US resource classification systems. The total number of drill holes used in this study is 517, of which 275 are included as source data. Table 11-2 is a breakdown of the statistics used in the study with all three bench configurations combined. Table 11-2: Statistical Analysis of Drill Hole Data Spacing Classification: Measured Indicated Inferred Distance Between Drill holes (miles): 0 –¹⁄₄ ¹⁄₄—³⁄₄ ³⁄₄—3 Number of Data Pairs (Source Data Only): 518 4,694 41,192 Number of Data Pairs (All Data): 1,478 10,604 119,622 Average Thickness Variation (Source Data Only): 24% 28% 33% Average Thickness Variation (All Data): 45% 40% 57% Percent of Pairs Exhibiting Less Than 20-percent 80% 80% 78% Negative Variability (Source Data Only): Percent of Pairs Exhibiting Less Than 20-percent 73% 75% 69% Negative Variability (All Data): As is shown, the thickness variation between holes (verified data only) is approximately equivalent to historically accepted standards. Utilizing all of the drill hole information, including that which lacks source data, significant variations exist which would prohibit historically accepted standards. As such, MM&A only utilized those points of observation with source information for indicated and measured status. Of important note, thickness modeling for resource (and subsequently, reserve) estimates included all available thickness information, including the highly variable, non-vetted drill holes which lack source information. MM&A initially computed resource estimates both with and without the highly variable, non-vetted information. Resources estimates were within 1-percent of one-another, despite the highly variable nature of the non-vetted information. MM&A geologists and engineers modeled the deposit to reflect the realities of mining. This statistical study demonstrates that for each configuration of mineable seams, the classification system of measured (0 to ¹⁄₄ mile), indicated (¹⁄₄ to ³⁄₄ mile), and inferred (³⁄₄ to 3 miles) is reasonably adequate to predict seam thickness variation for modeling and mining purposes, for those drill holes which contain sufficient source exploration to be deemed reliable points of observation for thickness. MARSHALL MILLER & ASSOCIATES, INC. 52

11.2 Qualified Person’s Estimates Based on the work described and detailed modelling of the areas considering all the parameters defined, a coal resource estimate, summarized in Table 11-3, was prepared as of December 31, 2022, for Property (see Appendix 1). Resources represent in-place coal tonnages exclusive of the interburden, but inclusive of any high-ash partings within the Mary Lee and Blue Creek coal seams. As such, in-situ tonnages and quality as presented in Table 11-3 reflect the inclusion of high-ash partings which are ultimately removed after mining during coal preparation. Table 11-3: Coal Resources Summary as of December 31, 2022 Coal Resource (Dry Tonnes, In Situ, Mt) Resource Quality (Dry) Seam Measured Indicated Inferred Total Ash% Sulfur% VM% Inclusive of Reserves Mary Lee 19.0 13.5 0.0 32.5 ——Blue Creek 50.5 28.4 0.0 78.9 —— Total 69.5 41.9 0.0 111.4 13.8 0.8 30 Exclusive of Reserves 0.0 Mary Lee 0.0 12.8 0.0 12.8 ——Blue Creek 0.0 26.5 0.0 26.5 —— Total 0.0 39.2 0.0 39.2 19.0 1.5 31 Grand Total 0.0 69.5 81.1 0.0 150.7 —— Note 1: For A through E1, Resource tonnes are inclusive of reserve tonnes since they include the in-situ tonnes from which recoverable coal reserves are derived. Note 2: For E2 and E3, Resource tonnes are exclusive of reserve tonnes since they include the in-situ tonnes for which no recoverable reserve tonnes have been estimated. Note 3: Coal resources are reported on a dry basis, inclusive of high-ash partings which are ultimately removed during coal preparation. Surface moisture and inherent moisture are excluded. Note 4: Coal resource quality reported on a raw, weight-averaged basis. Totals may not add due to rounding. 11.3 Qualified Person’s Opinion Based on the data review, the attendant work done to verify the data integrity and the creation of an independent geologic model, MM&A believes this is a fair and accurate representation of the Property’s resources. Resources exclusive of reserve are limited by quality definition. Initial drilling suggests potentially higher ash and sulfur parameters in comparison to the eastern areas. Sufficient exploration data exists to define the thickness distribution trends of the western area, but ongoing additional exploration is needed to better define quality characteristics of the subject coals. Additionally, the western resource area exhibits thinner seam characteristics than the eastern area. Extrapolation of trends between seam thickness and costs suggests that the coals in the western resource area could be mined at reasonably similar costs to those in the east, albeit higher. The market impacts of potentially higher ash and sulfur values is unknown. Warrior Met is conducting an exploration campaign to better define these trends. MARSHALL MILLER & ASSOCIATES, INC. 53

12 Mineral Reserve Estimates 12.1 Assumptions, Parameters and Methodology Coal Reserves are classified as proven or probable considering “modifying factors” including mining, metallurgical, economic, marketing, legal, environmental, social and governmental factors. > Mineral Reserve is an estimate of tonnage and grade or quality of indicated and measured mineral resources that, in the opinion of the qualified person, can be the basis of an economically viable project. More specifically, it is the economically mineable part of a measured or indicated mineral resource, which includes diluting materials and allowances for losses that may occur when the material is mined or extracted. > Proven Coal Reserves are the economically mineable part of a measured coal resource, adjusted for diluting materials and allowances for losses when the material is mined. It is based on appropriate assessment and studies in consideration of and adjusted for reasonably assumed modifying factors. These assessments demonstrate that extraction could be reasonably justified at the time of reporting. > Probable Coal Reserves are the economically mineable part of an indicated coal resource, and in some circumstances a measured coal resource, adjusted for diluting materials and allowances for losses when the material is mined. It is based on appropriate assessment and studies in consideration of and adjusted for reasonably assumed modifying factors. These assessments demonstrate that extraction could be reasonably justified at the time of reporting. Upon completion of delineation and calculation of coal resources, MM&A generated a LOM plan for the Project. The footprint of the LOM plan is shown on the maps in various figures throughout the text. The mine plan was generated based on previous mine plans, anticipated lease acquisitions, and operational criteria with modifications where necessary due to geologic mapping, or other factors determined during the evaluation. Carlson Mining software was used to generate the LOM plan. The mine plan was sequenced based on productivity schedules developed collaboratively between MM&A and Warrior Met. MM&A judged the productivity estimates and plans to be reasonable based on experience and current industry practice. Mining plans encompass a significant portion of uncontrolled tonnage. While a risk, it is assumed that adverse parcels will be acquired as needed by Warrior Met to support longwall mining. A minimum mining height of 5 feet was used due to the longwall mining method being employed, and 7.0 feet for continuous miner sections. For coal seams thinner than the assigned mining height, the difference between the coal seam height and assigned mining height consists of OSD. Mine recovery generally varies between 30 and 60 percent for continuous mining panels, and 95 percent for longwall. Plant recovery is a function of in-seam recovery, OSD and adjustments to produce a 10-ash product. A typical entry width is 20-feet. MARSHALL MILLER & ASSOCIATES, INC. 54

Raw, ROM production data outputs from LOM plan sequencing were processed into Microsoft® EXCEL spreadsheets and summarized on a quarter and annual basis for processing into the economic model. Average seam densities were estimated to determine raw coal tonnes produced from the LOM plan. Average mine recovery and wash recovery factors were applied to determine coal reserve tonnes . Coal reserve tonnes in this evaluation are reported at a 10.0-percent moisture and represent the saleable product from the Property. Pricing, as provided by Warrior Met, is described in Section 16.2. The pricing data assumes an FOB railcar or barge price of approximately $116 per metric tonne for calendar year 2025 when production begins. The price increases, based on the most recent supply and demand forecast, to approximately $150 per metric tonne by 2030 then it is held constant afterwards. Pricing for the years 2022 through 2024 is shown for information purposes only, as revenue streams from the operation are not projected to be realized until 2025. The coal resource mapping and estimation process, described in the report, was used as a basis for the coal reserve estimate. Proven and probable coal reserves were derived from the defined coal resource considering relevant processing, economic (including technical estimates of capital, revenue, and cost), marketing, legal, environmental, socio-economic, and regulatory factors and are presented on a moist, recoverable basis. As is customary in the US, the categories for proven and probable coal reserves are based on the distances from valid points of measurement as determined by the QP for the area under consideration. For this evaluation, measured resource, which may convert to a proven reserve, is based on a ¹⁄₄-mile radius from a valid point of observation. Points of observation include exploration drill holes and gas wells, approximately half of which have been vetted by the review of original, source information. The geologic model is based on seam depositional modeling, the interrelationship of overlying and underlying strata on seam mineability, seam thickness trends, the impact of seam structure (i.e., faulting), intra-seam characteristics, etc. Once the geologic model was completed, a statistical analysis, described in Section 11.1.1 was conducted and a ¹⁄₄-mile radius from a valid point of observation was selected to define Measured Resources. Likewise, the distance between ¹⁄₄ and ³⁄₄ of a mile radius was selected to define Indicated Resources. Indicated Resources may convert to Probable Reserves. There are no Inferred Resources (greater than a ³⁄₄-mile radius from a valid point of observation) within the mine plan, resources, or reserves. 12.2 Qualified Person’s Estimates The coal reserves, as shown in Table 12-1, are based on a technical evaluation of the geology and a bankable feasibility study of the coal deposits. The extent to which the coal reserves may be affected by any known environmental, permitting, legal, title, socio-economic, marketing, political, or other MARSHALL MILLER & ASSOCIATES, INC. 55

relevant issues has been reviewed. Similarly, the extent to which the estimates of coal reserves may be materially affected by mining, metallurgical, infrastructure and other relevant factors has also been considered. Such factors include a mine recovery of 63 percent derived from an engineered mine plan, the consideration of out-of-seam and in-seam dilution material, an effective a wash recovery of 61 percent and the consideration of moisture factors. Projected mine recovery for Blue Creek in comparison to Warrior’s active mines is lower due to faults present in the reserve area which were considered when designing the mine plan. The results of this TRS define an estimated 68.2 Mt of proven and probable marketable coal reserves. Table 12-1: Coal Reserves Summary, Specific to Mining Areas A through E1, (Marketable Sales Basis) as of December 31, 2022 Demonstrated Coal Reserves (Wet Tonnes, Washed or Direct Shipped, Mt) Wash By Reliability Category By Control Type Quality (Dry Basis) Recovery Seam Proven Probable Total Owned Leased Option Ash% Sulfur% VM% % Mary Lee 11.4 7.9 19.3 3.1 13.9 2.3 12.8 0.9 31 Blue Creek 31.4 17.5 48.9 8.1 35.7 5.1 8.4 0.6 32 61% Total 42.8 25.4 68.2 11.1 49.7 7.4 10.2 0.7 32 Note 1: Marketable reserve tonnes are reported on a moist basis, including a combination of surface and inherent moisture. The combination of surface and inherent moisture is modeled at 10-percent, comparable to Warrior Met’s current product moisture at its operating mines. Actual product moisture is dependent upon multiple geological factors, operational factors, and product contract specifications. Note 2: Wash recovery is based on LOM planning and reflects projected plant recovery after the consideration of out-of-seam dilution. Wash recover is not stated on a seam-by-seam basis, as the Mary Lee and Blue Creek seams are mined together – allocation of dilution material on a seam-by-seam basis would introduce confusion with regards to wash recovery. Detailed reserve tables (see Appendix) show projected in-seam wash recovery on a seam-by -seam basis, absent dilution assumptions. Note 3: Coal Reserves are based upon sales assumptions provided to MM&A by Warrior and were relied upon by MM&A. Financial modeling assumes sales prices of approximately $116.37/tonne (FOB-mine) in 2025, increasing to a long-term price of approximately $150.37/tonne. See Chapter 16 for further details on marketing assumptions. Totals may not add due to rounding. 12.3 Qualified Person’s Opinion The estimate of coal reserves was determined in accordance with SEC standards. The LOM mining plan for the Property was prepared to the level of preliminary feasibility. Mine projections were prepared with a timing schedule to match production with coal seam characteristics. Production timing was carried out from current locations to depletion of the coal reserve area. Coal reserve estimates could be materially affected by the risk factors described in Section 22.2. Based on the preliminary feasibility study and the attendant economic review, MM&A believes this is a fair and accurate estimation of Property’s coal reserves. MARSHALL MILLER & ASSOCIATES, INC. 56

13 Mining Methods and Mine Plan Design 13.1 Geotechnical and Hydrologic Aspects of Mine Design 13.1.1 Horizontal Stress The orientation and magnitude of horizontal stress in the subject area has not been measured; however, consideration of published data from The World Stress Map Project and industry experience in the general region suggests that the orientation of the principal horizontal stress may be between approximately N50°E and N70°E. No significant horizontal stress issues are known to have been reported at Warrior Met’s Mine No. 4 and Mine No. 7. Future exploration activities may consider conducting horizontal stress-related measurements, potentially via overcoring to determine stress magnitude and direction or by using an Acoustic Televiewer (ATV) downhole geophysical probe to detect principal horizontal stress orientation. 13.1.2 Pillar Design Pillar design for the proposed mine has been evaluated considering design methodology successfully implemented at nearby mines, as well as with modern pillar design software. Deep mining in the subject region commonly implements a yield pillar design (herein referred to as the Wilson Method) as described in Carr and Wilson (1982) and Martin, et al. (1988). In addition, pillar design specific to the subject area is discussed in Park (1989). In addition to assessment via the Wilson Method, the proposed pillar designs were also evaluated using a software package known as Analysis of Coal Pillar Stability (ACPS), which includes a combination of methodologies initially developed as part of the National Institute for Occupational Safety & Health (NIOSH) Ground Control Toolbar. Pillar sizing and design for the proposed mining is consistent with that of Warrior Met’s two active mines that operate locally in similar geologic conditions. The proposed pillar dimensions are expected to be adequate for mine stability under typical mining conditions. Pillar stability assessment should be updated as additional geotechnical information is collected for the project. Cut-depth, panel sequencing, face ventilation, and seal locations have not been specifically considered for the current pillar stability assessment. 13.1.3 Hydrogeology Hydrogeologic concerns are expected to be minimal within the majority of the proposed mine area, with the exception of areas near existing faults and overlain by large surface water features (see Section 7.4). Warrior Met currently operates two similar mines in the vicinity, using the same mining methods and in the same coal beds as the proposed mine. These two active mines have reportedly experienced minimal hydrologic concerns or material issues. Mining of the subject reserve is generally projected to occur in areas exhibiting similar hydrogeological conditions as Warrior Met’s active mines, including stream undermining, undermining of aquifers, and mining through hydraulically fractured coalbed methane wells. Based upon the history of the current operations with regards to hydrogeological MARSHALL MILLER & ASSOCIATES, INC. 57

matters, the proposed operation is not expected to be significantly affected by mine-wide hydrogeologic issues. The project’s slope will cross multiple faults and a heavily fractured/breccia zone which also extends into areas proximal to the projected slope bottom and adjacent to the initial longwall mining district. Warrior Met is aware of this potential encumbrance which is strategically avoided by planned initial longwall mining. Supplemental support, in-mine grouting, and increased water handling could reasonably be expected on a spot basis to account for instability and water-inflow associated with this unique geological zone. MM&A has not conducted a detailed geotechnical or hydrogeological study associated with this potential hazard, but rather makes note to the reader of available lithologic data and researched publications which suggests a possible encumbrance. Warrior’s initial longwall districts avoid areas which have been previously identified by others as potential hazards. 13.2 Production Rates Plans summarized in this TRS include a single longwall operation which is supported by continuous mining units. Warrior Met is considering an alternative plan which would include two longwall mining units. The mine plan and productivity expectations reflect historical performance and efforts have been made to adjust the plan to reflect future conditions. MM&A is confident that the mine plan is reasonably representative to provide an accurate estimation of coal reserves. Mine development and operation have not been optimized within the TRS. Rather, the plan is developed at the Pre-Feasibility level to gain a realistic estimate of potential operational and capital costs to demonstrate the economic viability of the subject reserves. Productivity for continuous mining sections and longwall units reflect typical rates incurred in the region. At a steady state, the mine produces approximately 3.7 million clean tonnes per year. Carlson Mining software was used by MM&A to generate the mine plan for the underground mineable coal seams. The mine plan was sequenced based on productivity schedules provided by Warrior Met, which were based on historically achieved productivity levels. All production forecasting ties assumed production rates to geological models as constructed by MM&A’s team of geologists and mining engineers. Table 13-1 below summarizes the production forecast for the Blue Creek Mine illustrating the clean production tonnes and tonnage breakdowns by controlled (reserve) and adverse status. Adverse tonnages represent a risk to the project, as mineral rights must be acquired ahead of mining. Such represent approximately 34-percent of the LOM projected tonnages. Risk 15 and 16, identified in Chapter 22, provide a discussion of the relative severity of such risks. Most notably, the acquisition of BLM properties represents a material risk to the project as projected in this TRS. MARSHALL MILLER & ASSOCIATES, INC. 58

Table 13-1: Blue Creek Production Forecast Summary Total Tonnes x1,000,000 Q3 25 Q4 25 Q1 26 Q2 26 Q3 26 Q4 26 Q1 27 Q2 27 Q3 27 Q4 27 LOM In Seam Tonnes, (ML + BC) 120.9 0.06 0.11 0.21 0.25 0.24 0.20 0.28 1.33 1.43 1.26 Dilution Tonnes, Raw 48.4 0.02 0.04 0.07 0.10 0.12 0.09 0.11 0.63 0.65 0.50 Total Raw Tonnes 169.2 0.08 0.15 0.29 0.34 0.35 0.29 0.39 1.96 2.07 1.76 Total Clean Tonnes 103.8 0.05 0.09 0.18 0.21 0.21 0.17 0.24 1.16 1.24 1.09 Clean Tonnes—Reserve 68.2 0.05 0.09 0.18 0.21 0.21 0.17 0.23 1.11 1.22 1.09 Clean Tonnes—Adverse 35.6 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.04 0.02 0.00 Percentage Controlled, % 66% 100% 100% 100% 100% 100% 100% 96% 96% 99% 100% Tonnes x1,000,000 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 In Seam Tonnes, (ML + BC) 4.7 4.77 4.84 4.95 4.91 4.51 4.79 4.52 3.98 5.20 4.80 Dilution Tonnes, Raw 2.1 2.10 2.13 2.10 2.05 2.20 2.05 2.11 2.12 2.00 1.99 Total Raw Tonnes 6.7 6.88 6.98 7.05 6.95 6.71 6.84 6.63 6.09 7.20 6.79 Total Clean Tonnes 4.1 4.14 4.21 4.30 4.26 3.91 4.15 3.91 3.44 4.49 4.13 Clean Tonnes—Reserve 3.9 3.71 3.71 4.07 2.82 2.73 2.79 0.79 0.60 2.58 2.72 Clean Tonnes—Adverse 0.1 0.43 0.49 0.23 1.43 1.18 1.37 3.13 2.84 1.91 1.41 Percentage Controlled, % 97% 90% 88% 95% 66% 70% 67% 20% 17% 58% 66% Tonnes x1,000,000 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 In Seam Tonnes, (ML + BC) 5.3 5.21 4.65 4.48 4.48 4.72 4.40 4.23 4.19 3.36 2.84 Dilution Tonnes, Raw 1.8 1.66 1.73 1.50 1.66 1.63 1.25 1.28 1.31 1.24 1.54 Total Raw Tonnes 7.1 6.87 6.38 5.98 6.14 6.35 5.65 5.51 5.50 4.61 4.38 Total Clean Tonnes 4.6 4.51 4.02 3.85 3.84 4.04 3.79 3.66 3.46 2.63 2.20 Clean Tonnes—Reserve 3.2 3.15 2.54 2.51 0.49 1.05 2.16 2.03 1.45 1.47 1.06 Clean Tonnes—Adverse 1.3 1.36 1.49 1.34 3.35 2.99 1.63 1.63 2.01 1.16 1.14 Percentage Controlled, % 71% 70% 63% 65% 13% 26% 57% 55% 42% 56% 48% Tonnes x1,000,000 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 In Seam Tonnes, (ML + BC) 2.9 3.39 3.93 3.46 1.98 — — — Dilution Tonnes, Raw 1.1 1.28 1.64 1.77 0.72 — — — Total Raw Tonnes 4.1 4.66 5.58 5.23 2.70 — — — Total Clean Tonnes 2.5 2.94 3.42 3.00 1.71 — — — Clean Tonnes—Reserve 2.3 2.93 2.97 2.38 1.41 — — — Clean Tonnes—Adverse 0.2 0.01 0.45 0.62 0.30 — — — Percentage Controlled, % 91% 100% 87% 79% 82% — — — 13.3 Mining Related Requirements Although the continuous miner sections are significantly more expensive to operate on a cost-per-tonne basis, they are necessary to open up areas of the mine by developing main entries and gate roads in preparation for the longwall. The LOM plan included in this TRS requires three continuous mining support sections for the majority of the duration of the operation. 13.4 Required Equipment and Personnel The Blue Creek Project will be a sister operation to Warrior Met’s active operations, Mine No. 7 and Mine No. 4. The longwall shearing machines are used for extraction of coal at the production face. A chain conveyor is used to remove coal from the longwall face for discharge onto the conveyor belt which then ultimately delivers it to the skip system. Development for the longwalls is conducted by the extraction of coal from the production faces using continuous miners and haulage using shuttle cars to a feeder-breaker located at the tail of the section conveyor belt. The feeder-breaker crushes large pieces of coal and rock and regulates coal feed onto the mine conveyor. Roof-bolting machines are used to support the roof on the development sections of the longwall mine and battery scoops are available to clean the mine entries and assist in delivery of mine supplies to work areas. Other supplemental equipment such as personnel carriers, supply vehicles, etc., are also used daily. MARSHALL MILLER & ASSOCIATES, INC. 59

Mine conveyors typically range in width up to 6 feet. Multiple belt flights are arranged in series to deliver raw coal to the underground storage. Along the main and sub-main entries and panels, a travel way is provided for personnel and materials by rubber-tired equipment or on rail. The haulage slope conveyor will be used to transport ROM coal to the surface where the coal may be sampled, crushed and washed in the preparation plant and stockpiled to await shipment. Surface ventilation fans are installed as needed to provide a sufficient volume of air to ventilate production sections, coal haulage and transport entries, battery charging stations, and transformers in accordance with approved plans. High-voltage cables deliver power throughout the mine where transformers reduce voltage for specific equipment requirements. The Mine Improvement and New Emergency Response Act of 2006 (MINER Act) requires that carbon monoxide detection systems be installed along mine conveyor belts and that electronic two-way tracking and communications systems be installed throughout the underground mine. Water is required to control dust at production sections and along conveyor belts, and to cool electric motors. Water is available from nearby sources and is distributed within the mine by pipelines as required. At a steady state, the mine is projected to employ approximately 375 employees. 14 Processing and Recovery Methods 14.1 Description or Flowsheet A new coal processing is being designed to handle the run-of-mine coal from the proposed longwall operation. Current plans call for a processing plant with a capacity of 1,800 tons per hour (1,620 metric tonne per hour). Following initial sizing of the material, the coarse coal (2-inch by 1-mm) is to be cleaned using a dense media cyclone (DMC) with the overflow from the DMC being dried via clean coal centrifuges. The undersize material (sub 1-mm) will be divided at 100-mesh via classifying cyclones. The underflow material from the cyclones (greater than 100-mesh) is processed by either triple start compound spirals, reflux classifiers, or fines dense media technology. The overflow stream from the classifying cyclones (smaller than 100-mesh) is to be treated using stack cell flotation technology. The flotation circuit will use a rougher-scavenger configuration, where the tailings from the first flotation unit are reprocessed by the following unit. The cleaned coal from the flotation and spiral units will be combined and dewatered using a screen bowl centrifuge (SBC). The underflow stream from the coarse dense media circuit and the reject material from the spirals are combined and treated as coarse refuse. The tailings stream from the flotation cells and various effluent circuits are combined and fed to a thickener. Current plans by Warrior Met call for plate presses and MARSHALL MILLER & ASSOCIATES, INC. 60

dry slurry disposal to mitigate risks associated with impoundments. Table 14-1 below shows 5 years of projected wash yields for the Blue Creek plant. Table 14-1: 5 Years of Projected Wash Yields for Blue Creek Projected Yield % (Combination of Plant Total LOM Basis No. 5 + Plant No. 7) 2025 Projected 63% 2026 Projected 61% 2027 Projected 60% 2028 Projected 60% 2029 Projected 60% LOM Projected 61% 15 Infrastructure 15.1 Mine Ventilation The subject coal reserves will be accessed via a combination of vertical shafts and a slope. Ventilation to the Blue Creek mine workings will be provided through multiple shafts, utilizing an exhausting ventilation fan atop the main return shaft to power the airflow. The fresh-air intake shaft will be divided, housing a personnel/supply elevator to service the mine as well as provide intake air. Prior to longwall startup, a dedicated intake shaft will be developed on the initial mains to support longwall ventilation. In conjunction with the longwall mining plan, each longwall district will be ventilated using a dedicated bleeder shaft with its own exhaust fan. Additional main ventilation shafts will be needed as the mainline entries progress further from the slope bottom. 15.2 Methane Methane is not expected to adversely affect mine production and should be managed with attention to sound ventilation practices. Coalbed degasification and methane drainage are very mature practices in the BWB and many of the CBM wells began degasification 20 to 30 years ago. Therefore, it is expected that degasification has been completed to the extent that methane will not represent a significant source of production delays. CBM liberated during mining can create a safety hazard and interrupt production if the concentrations along the working face exceed safe limits. The mine ventilation system has been planned to deliver sufficient volume of air to ensure that the methane concentration in the immediate return of the production sections does not exceed 1 percent. Factors that may affect the concentration and liberation of methane gas during mining include depth of overburden cover, which generally exceeds 1,000 feet in the proposed mine area; geology and structural features such as faults; mine production MARSHALL MILLER & ASSOCIATES, INC. 61

rates; methane release characteristics of the coal seam; and previous CBM development (vertical and/or horizontal wells). 15.3 Materials Handling Transport of coal within the mine and to the surface via the planned slope will be done exclusively with belt conveyors. The Blue Creek conveyors are designed to accommodate constant, high volume longwall production. 15.4 Seam Access Access to the proposed mine will be provided by a combination of a slope and shafts, the installation of which is currently underway. Warrior Met reports that as of the issuance of this TRS, the slope and initial shafts have reached between one-third and one-half of their ultimate depth. The decline slope will be for conveyor access, in order to transport ROM coal from the mine and multiple shafts will allow for transport of personnel, materials, and equipment as well as serve for ventilation purposes. Details pertaining to engineering design of slopes and shafts are retained in MM&A and/or Warrior Met’s files. 15.5 Surface Infrastructure 15.5.1 Preparation Plant & Materials Handling Infrastructure The Project includes surface facilities to be constructed at multiple locations in close proximity to the intersection of State Route 69 and Brandon School Road. The map below illustrates the locations of various site infrastructure. MM&A and Warrior Met maintain more detailed mapping and supporting information in their files. MARSHALL MILLER & ASSOCIATES, INC. 62

Figure 15-1: Approximate Location of Plant and Various Infrastructure 15.5.2 Clean Coal Transportation This TRS assumes that all clean coal is shipped to market via a barge loadout facility on the Black Warrior River, necessitating the construction an overland conveyor. The conveyor route follows an existing power line right-of-way. The final location of the barge loadout has been determined, including the final belt alignment from the existing right of way to the Black Warrior River. Construction of the conveyor system is anticipated to commence in 2023. Additionally, Warrior Met reports that it is considering an alternative transportation method via rail. Rail transportation would require the installation of a significant rail spur to an existing mainline railroad. Although this TRS assumes capital and operating costs associated with an overland conveyor and barge system, Warrior Met is still considering both methods of transportation. 15.5.3 Water Supply The Project’s water system is designed to deliver water to multiple end-use locations across the mine complex and maintain storage capacity in the freshwater impoundment. A freshwater pump in a proximal waterway will provide the majority of water for the operation, including firefighting water, plant make-up water and water for mining needs. Details pertaining to the design are retained in MM&A and Warrior Met’s files. MARSHALL MILLER & ASSOCIATES, INC. 63

15.5.3.1 Potable Water Potable water will be needed at several surface locations such as the bathhouse, plant, and mine office. Additionally, potable water is required for emulsion hydraulic system for longwall equipment, preventing algae buildup in the hydraulic system. Public water is available locally through Oakman Water Works, Inc. (Oakman). Public sewer is not available in the area, requiring the construction of a sewage treatment facility to handle the raw sewage prior to discharge. Multiple systems may be required to service the preparation plant and the deep mine. Permitting actions through the Health Department and NPDES may be required. 15.5.4 Power Power for the Project will be sourced from Alabama Power’s 115kV transmission line that lies to the west of the Property. It is anticipated that the final power system will be similar to those employed at Warrior Met’s active operations. Capital associated with power systems has been included in the pre-feasibility level economic analysis. 16 Market Studies 16.1 Market Description Drill hole data was utilized to develop average coal quality characteristics for the Project. Detailed metallurgical characteristics are presented in Table 10-5. Yield projections are based upon a 10% dry ash product with sulfur percentages under 1%. All the mine production serves the metallurgical markets. The coal is expected to be marketed as a high-volatile A (typically greater than 32 percent and less than 34 percent volatile matter content) product. Recent exploration activities in Resource and Reserve Area E1 have shown slightly elevated ash and sulfur, and as such, has been classified as an “indicated” status, reflective of the unknowns with processing and marketing. Resource Areas E2 and E3, which do not include reserves, have minimal exploration information to support market placement. The limited information in this zone suggests even higher potential ash and sulfur characteristics. 16.2 Price Forecasts Warrior Met provided MM&A with the most recent IHS Markit Ltd. (IHS) coking coal forecast through 2030 as the basis of the pricing assumptions. Pricing was held constant beyond that date. Warrior Met also provided MM&A with appropriate transportation adjustments to derive FOB-mine realized sales prices from the HIS forecast. MARSHALL MILLER & ASSOCIATES, INC. 64

Coal from the Blue Creek Mine is assumed to be sold at 100% of the US high-vol price listed, as it has some qualities that should list it among the best high-vol A coals in the U.S. based on strong CSR, and lower sulfur levels. Warrior Met has recommended utilizing the HVA forecast to determine sales realizations for the Blue Creek Project. To develop the price received FOB the barge, transportation and loading were backed out of the FOB vessel price. The adjusted pricing is detailed in Table 16-1. Table 16-1: Adjusted Pricing LOM 2023 2024 2025 2026 2027 Price FOB Vessel $175.86 $143.00 $143.00 $143.00 $148.00 $164.00 Transportation $26.63 $0.00 $0.00 $26.63 $26.63 $26.63 Revenue FOB Barge $149.23 $0.00 $0.00 $116.37 $121.37 $137.37 2028 2029 2030 2031 2032 2033 Price FOB Vessel $170.00 $174.00 $177.00 $177.00 $177.00 $177.00 Transportation $26.63 $26.63 $26.63 $26.63 $26.63 $26.63 Revenue FOB Barge $143.37 $147.37 $150.37 $150.37 $150.37 $150.37 2034 2035 2036 2037 2038 2039 Price FOB Vessel $177.00 $177.00 $177.00 $177.00 $177.00 $177.00 Transportation $26.63 $26.63 $26.63 $26.63 $26.63 $26.63 Revenue FOB Barge $150.37 $150.37 $150.37 $150.37 $150.37 $150.37 2040 2041 2042 2043 2044 2045 Price FOB Vessel $177.00 $177.00 $177.00 $177.00 $177.00 $177.00 Transportation $26.63 $26.63 $26.63 $26.63 $26.63 $26.63 Revenue FOB Barge $150.37 $150.37 $150.37 $150.37 $150.37 $150.37 2046 2047 2048 2049 2050 2051 Price FOB Vessel $177.00 $177.00 $177.00 $177.00 $177.00 $177.00 Transportation $26.63 $26.63 $26.63 $26.63 $26.63 $26.63 Revenue FOB Barge $150.37 $150.37 $150.37 $150.37 $150.37 $150.37 2052 2053 2054 Price FOB Vessel $177.00 $177.00 $177.00 Transportation $26.63 $26.63 $26.63 Revenue FOB Barge $150.37 $150.37 $150.37 IHS is a well-recognized source of such data. IHS is a global diversified provider of critical information, analytics, and solutions. It offers next-generation information, analytics, and solutions to customers in business, finance, and government, improving their operational efficiency and providing deep insights. IHS serves business and government customers worldwide. 16.3 Contract Requirements Some contracts are necessary for successful marketing of coal. For Blue Creek, since all mining, preparation and marketing is done in-house, the remaining contracts required include: MARSHALL MILLER & ASSOCIATES, INC. 65

> Transportation – The mine will contract with requisite railroad and barge transportation companies to transport the coal to either the domestic customers or to the Mobile export terminal for overseas shipment. > Handling – Contracts for loading vessels for export sales are necessary. These are typically handled by annual negotiations based on projected shipments. > Sales – Sales contracts are a mix of spot and contract sales. 17 Environmental Studies, Permitting and Plans, and Social and Community Impacts 17.1 Results of Studies The Project represents a greenfield site with minimal completed development work. Aside from baseline analysis pertaining to permitting, MM&A is not aware of existing environmental studies on the Property. MM&A did not undertake a review of permitting violation history for the active permits or an Environmental Site Assessment (ESA) of the properties. The property is located adjacent and proximal to multiple active longwall operations which are subject to the same regulatory environment as the proposed BC mine. 17.2 Requirements and Plans for Waste Disposal 17.2.1 Disposal Methods and Design Concepts Coal refuse from the preparation plant will be disposed of on site at several locations over the life of the mine. Current plans call for dry slurry disposal via the use of plate presses for fine refuse, yet permitting is underway under the predication of fine refuse disposal in slurry form. Coarse refuse will travel by conveyor belt to a central location and then by truck to its final destination as needed. Bulldozers and other mobile equipment will be used to spread and compact the material for the construction of the disposal structures. The refuse produced by the plant is expected to generate 4 tonnes of coarse refuse per tonne of fine refuse. Volumetrically, this equates to 2.33 cubic yards of coarse refuse produced to every cubic yard of slurry (on a dry, consolidated, design basis). Warrior Met reports that it is also considering the option of combined coarse/fine refuse storage should slurry impoundments become prohibitive. 17.2.2 Life-of-Mine Storage Requirements For the life of the Project, it is estimated that the plant will generate 25,000 ac-ft of fine refuse and 95 million cubic yards of coarse refuse. These figures were derived from the MM&A’s production model using a coarse to fine ratio and refuse densities provided by Warrior Met. Such figures were reviewed by MM&A and deemed appropriate. These characteristics are also typical of Warrior Met’s active facilities that are mining and processing similar material as that expected at the Project. For refuse MARSHALL MILLER & ASSOCIATES, INC. 66

planning, the assumed ratio of coarse to fine refuse is 4 to 1 by weight and dry, compacted densities are 110 pounds per cubic foot (coarse refuse) and 64 pounds per cubic foot (fine refuse). At full production, the Project is expected to generate an average of 1.7 million cubic yards of coarse refuse and 450 acre-ft of slurry annually. 17.2.3 Storage Areas Warrior Met has identified 4 slurry impoundment sites and 2 separate coarse refuse sites for refuse disposal. MM&A has confirmed storage volumes for these sites. Total storage estimated within these areas is roughly 13,550 ac-ft for slurry and about 59-million cubic yards for coarse refuse. This represents approximately 31 years of slurry and 35 years of coarse refuse storage, or over half of the LOM needs of the Project. Preliminary design for these sites appears to be reasonable and it is expected that permit approvals can be obtained for these locations. More detailed design work will be needed, however general layouts and expected capacities should not result in significant change. 17.2.4 Control of Proposed Storage Areas Warrior Met currently controls the surface property needed for three of the proposed refuse disposal areas and is in the process of permitting two of the sites. The areas currently controlled by Warrior Met for refuse disposal consist of two slurry impoundment sites and one coarse refuse site. An estimated 13 years of storage for both fine and coarse refuse is contained on these controlled sites. Warrior Met does control a majority of the surface property for the other sites as well. Property control for the remaining impoundment areas ranges from 60 to 80-percent. Timely property acquisitions will need to be made to utilize these planned sites. MM&A has no reason to believe that the remaining surface properties will not be acquired. 17.2.5 Refuse Permitting Warrior Met reports that it was successful in obtaining MSHA approval in March 2021 for the Slurry Impoundment No.1 facility. This facility will have approximately 1,200 acre-ft of beginning capacity and will support the mine for the first 4 years of production. An Army Corps of Engineers (ACOE) 404 Individual Permit is being prepared for 2023 submittal. Once ACOE review is underway, the SMCRA permit will be updated to reflect the addition of the fine refuse disposal facility. Warrior Met reports that it has completed the initial design of a coarse refuse disposal area which will provide approximately 10,000,000 cubic yards of initial capacity, which should accommodate up to the first 7 years of production. The coarse refuse area is in the advanced stages of permitting and is anticipated to be fully permitted in mid-2023. If a situation were to arise where the fine refuse disposal facility permitting was delayed, the coarse refuse disposal facility could be converted to a combined coarse refuse storage facility and accept coarse and dewatered tailings. MARSHALL MILLER & ASSOCIATES, INC. 67

17.3 Permit Requirements and Status Warrior Met (through its predecessor, Walter) has successfully obtained multiple permits for the proposed operations on the Property. Table 17-1 depicts the mine permits which are currently in place from: Alabama Surface Mining Commission (ALSMC); Alabama Department of Environmental Management (ADEM); United States Army Corps of Engineers (USACE); and MSHA. All of the currently approved permits have been renewed as needed and remain in good standing. The existing Surface Mine Control and Reclamation Act (SMCRA) permit will require a minor revision to accommodate revised surface infrastructure plans which have changed since the Project’s inception. Permits listed in Table 17-1 pertain to the proposed preparation plant and portal facilities. Additional permitting actions will be needed for the development and installation of the slurry Impoundment, coarse refuse facility, overland conveyor and barge loading facility. Table 17-1: Currently Active Permits Issuing Approval Expiration Facility Name Agency Permit No. Permit Type Date Date Blue Creek Energy Mine No. 1 ACOE SAM-2011-01645-CMS NW50 3/12/2012 3/18/2012 Blue Creek Mine No. 1—Alabama ADEM ALR10C2XU NPDES — General Construction 9/30/2022 3/31/2026 Highway 69 Entrance Road Blue Creek Energy Mine No. 1 ADEM ALR10BFR6 NPDES — General Construction 3/31/2026 Blue Creek Energy Mine No. 1 ASMC P-3964 Mining 6/20/2027 Additionally, Warrior Met will require permits related to the coarse and fine refuse facilities, barge loadout, and overland conveyor. Regulatory agencies which will be involved with such permit activities include the USACE, ALSMC, MSHA and ADEM. The most time-consuming aspect of the required remaining permitting action is associated with the MSHA review of the Slurry Impoundment design. These structures are classified as High-Hazard dams and as such, receive thorough and lengthy technical reviews through MSHA’s Technical Support group in Pittsburg, Pennsylvania. Review approvals for these facilities can be expected to take two to three years. Early submittal is essential to receiving timely approvals for these critical structures. National Pollutant Discharge Elimination System (NDPES) discharge for the impoundment area is covered under the existing state mine permit. While the Coarse Refuse Facility will also require MSHA review and approval, these structures do not have the same complexity in design and can be approved rather quickly. The conveyor from the plant to the barge loading facility will share the ROW of the powerline in its entirety, permitting of the beltline will coincide with the powerline. Permits for the overland conveyor and the Barge Loading Facility pose minimal risk of delay to the Project if pursued diligently. The permitting process will need to begin in the near future to match the required construction timeline for these items. 17.4 Local Plans, Negotiations or Agreements MM&A found no indication of ancillary agreements beyond the scope of Federal or State Regulations. MARSHALL MILLER & ASSOCIATES, INC. 68

17.5 Mine Closure Plans Applicable regulations require that mines be properly closed, and reclamation commenced immediately upon abandonment. In general, site reclamation includes removal of structures, backfilling, regrading, and revegetation of disturbed areas. Sediment control is required during the establishment of vegetation, and bond release generally requires a minimum five-year period of site maintenance, water sampling, and sediment control following mine completion and rough grading. For most mines, unless special issues arise, reclamation and monitoring costs continue for about 7 years after cessation of production. Reclamation of underground mines includes closure and sealing of mine openings such as portals and shafts in addition to the items listed above. Estimated costs for mine closure for all the Blue Creek facilities, including water quality monitoring during site reclamation, are included in the financial model. As with all mining companies, an accretion calculation is performed annually so the necessary Asset Retirement Obligations (ARO) can be shown as a liability on the balance sheet. Costs have been included for the closure of some existing facilities prior to exhaustion of the mine. As Bleeder shafts are determined to no longer be needed, they are sealed and as refuse disposal areas are filled and replaced, reclamation is done. The costs for this non-ARO reclamation work have been accrued on a per tonne basis in the model. 17.6 Qualified Person’s Opinion Warrior Met’s environmental and permitting staff is strongly engaged in the project. As it continues to move forward within existing project timelines and schedules, it is anticipated that Warrior Met will remain on target to obtain all necessary permits. Estimated expenditures for site closure and reclamation are included in the financial model for this site. 18 Capital and Operating Costs 18.1 Capital Capital expenditures (CAPEX) are typically reviewed and compared to other projects using three measures: initial investment, LOM capital and LOM capital per ton (or tonne) of production. The initial investment for this project is defined as the capital necessary until the mine reaches full production. With the longwall starting in early 2027, CAPEX for the Project (current through 2027) as shown in Figure 18-1 totals $671 million, excluding sunk cost. Major development capital items include the slope, shafts, bottom development and other purchases necessary to commence production. A new 1,800 TPH (1,600 tonnes per hour) preparation plant, an overland conveyor, and barge loadout have also been included in the Initial CAPEX. MARSHALL MILLER & ASSOCIATES, INC. 69

Figure 18-1: Initial Investment Capital ($000) Note: Capital figures are based upon MM&A’s best estimates and are supported by a combination of MM&A’s experience in comparable projects & comparable quotations. Such level is sufficient to meet the criteria of a pre-feasibility level financial assessment. At Warrior Met’s request more Capital has been front-loaded into 2023 and 2024 to mitigate the risk of extended lead times impacting timely delivery of the equipment. Beyond the Initial Investment of $671 million, excluding sunk cost through December 31, 2022, CAPEX is necessary for sustaining production. This includes rebuilds and replacement of equipment, mine development and multiple bleeder, intake and return shafts. Based on a previous detailed study of a mine in the basin, with pricing increased by 16% to reflect recent inflation trends, and a review of Warrior Met’s spending patterns, sustaining capital has been estimated at $11.00 per tonne. No efficiency or production increase projects have been included as they will be analyzed on a stand-alone basis when considered. To reflect typical spending patterns, based on production winding down, sustaining capital is reduced to 75% in 2052, 50% in 2053 and eliminated in 2054, the final year of production. LOM CAPEX totals $1.7 billion, inclusive of sustaining and replacement items and excluding sunk cost through December 31, 2022. All equipment and infrastructure are assumed to be purchased new for this project. For the purpose of calculating tax liability, it is necessary to forecast Depreciation. Development Capital is assumed to have an average depreciable life of 8 years beginning once the mine starts production. Sustaining Capital has been assumed to have an average depreciable life of 5 years, beginning at purchase. For the life of the mine, the CAPEX Expenditures from January 1, 2023 forward average $16.54 per marketed tonne which is reasonable for a project of this magnitude. MARSHALL MILLER & ASSOCIATES, INC. 70

18.2 Operating Cost MM&A used a combination of historical information from Warrior Met’s nearby existing operations and detailed operating cost estimates from a recent study of a property in the region. Hourly labor rates and salaries were based upon regional information and expectations. Fringe-benefit costs were developed for vacation and holidays, federal and state unemployment insurance, retirement, workers’ compensation and pneumoconiosis, casualty and life insurance, healthcare, and bonuses. A cost factor for mine supplies was developed that relates expenditures to mine advance rates for roof-control costs. Other mine-supply costs are typically related to factors such as feet of section advance, ROM tonnes mined, and days worked. Other factors were developed for maintenance and repair costs, rentals, mine power, outside services and other direct mining costs. Utilizing this process, costs were calculated at 2022 levels, then to reflect recent inflation trends multipliers were applied to each category. Table 18-1 provides the inflation factors used to escalate the costs from 2022 to 2023. Table 18-1: Inflation Factors Multipliers Labor 3.0% Benefits 3.0% Fuel & Lube 100.0% Parts 14.5% Surface Contractors 17.5% Capital 16.0% Operating costs factors were developed for the coal preparation plant processing, refuse handling, and coal loading. These were also subject to the multipliers in Table 18-1. Property taxes and insurance and bonding were calculated based on regional information and experience at Warrior Met’s other mines. Appropriate royalty rates were assigned for production from leased coal lands, and sales related taxes were calculated for state severance taxes, the federal black lung excise tax, and federal and state reclamation fees. Mandated sales related costs such as black lung excise tax are summarized in Table 18-2. Table 18-2: Estimated Coal Production Taxes and Sales Costs Description of Tax or Sales Cost Basis of Assessment Cost Federal Black Lung Excise Tax—Underground Per Tonne $1.21 Federal Reclamation Fees – Underground Per Tonne (Moisture Adjusted) $0.123 Alabama Severance Tax Per Tonne (Moisture Adjusted) $0.344 Royalties Percentage of Revenue (FOB Mine) 8% Note: 1. Federal black lung excise tax is paid only on coal sold domestically. MM&A assumed 15% of total coal sales to be domestic in the economic analysis discussed below. MARSHALL MILLER & ASSOCIATES, INC. 71

A summary of the projected operating costs is in Figure 18-2. Figure 18-2: OPEX *The LOM model and associated economic analysis is intended to prove the economic viability of the subject coal tonnage, allowing controlled tons to be classified as “reserve”. The development of costs incorporates a combination of Warrior Met’s historical performance and MM&A’s knowledge of mine productivity and cost structures for comparable operations. 18.3 Capex & Opex Summary Tables Table 18-3 shows the projected LOM major cost line items for the Blue Creek Mine. Costs have been considered to the level of pre-feasibility with an accuracy of +/- 25 percent. Cost estimations use historical costs from similar mining operations as a basis to project costs forward with appropriate adjustments based on geological and economic factors. Table 18-3: Project LOM Major Cost Line Items – Opex (000) Total LOM 2023 2024 2025 2026 2027 2028 2029 ROM Tonnes Produced 169,232 — 228 1,275 6,181 6,743 6,876 Clean Tonnes Produced 103,824 — 144 778 3,728 4,070 4,143 Mining Costs $3,478,536 $- $- $14,488 $52,612 $116,735 $126,004 $132,220 Preparation and Loading $792,913 $- $- $3,036 $12,799 $51,359 $29,350 $30,091 General & Administrative $255,089 $1,165 $4,771 $4,067 $6,566 $8,423 $8,755 $8,755 Royalties $1,068,212 $- $- $40 $3,154 $33,950 $40,539 $42,392 Property and Sales Related Taxes $90,277 $664 $664 $702 $1,169 $3,083 $3,305 $3,352 Total Capex $1,727,279 $160,675 $171,125 $191,125 $111,125 $42,134 $45,752 $46,554 Total $7,685,362 $162,505 $176,561 $213,829 $189,478 $265,595 $264,519 $274,383 MARSHALL MILLER & ASSOCIATES, INC. 72

(000) 2030 2031 2032 2033 2034 2035 2036 2037 ROM Tonnes Produced 6,978 7,050 6,953 6,708 6,841 6,629 6,094 7,203 Clean Tonnes Produced 4,205 4,297 4,256 3,911 4,153 3,914 3,440 4,488 Mining Costs $133,131 $134,853 $133,943 $130,650 $139,572 $136,412 $130,171 $143,800 Preparation and Loading $30,449 $30,749 $30,432 $29,367 $30,004 $29,146 $27,121 $31,389 General & Administrative $8,755 $8,755 $8,755 $8,237 $8,237 $8,237 $8,237 $8,237 Royalties $43,887 $44,841 $44,411 $40,813 $43,342 $40,848 $35,904 $46,835 Property and Sales Related Taxes $3,393 $3,452 $3,425 $3,202 $3,359 $3,204 $2,896 $3,576 Total Capex $47,239 $48,244 $47,791 $43,018 $45,684 $43,056 $37,844 $49,366 Total $278,037 $282,239 $279,966 $265,906 $281,192 $271,446 $251,709 $294,894 (000) 2038 2039 2040 2041 2042 2043 2044 2045 ROM Tonnes Produced $6,791 $7,062 $6,874 $6,377 $5,979 $6,138 $6,348 $5,650 Clean Tonnes Produced $4,129 $4,561 $4,511 $4,024 $3,849 $3,842 $4,041 $3,788 Mining Costs $138,523 $141,754 $141,175 $134,897 $131,034 $132,783 $134,669 $123,683 Preparation and Loading $29,835 $31,072 $30,484 $28,552 $27,239 $27,680 $28,490 $26,241 General & Administrative $8,237 $8,237 $8,237 $8,237 $8,237 $8,237 $8,237 $8,237 Royalties $43,086 $47,601 $47,073 $41,993 $40,172 $40,092 $42,177 $39,527 Property and Sales Related Taxes $3,343 $3,623 $3,591 $3,275 $3,162 $3,157 $3,286 $3,122 Total Capex $45,415 $50,173 $49,617 $44,262 $42,343 $42,259 $44,456 $41,663 Total $279,359 $294,083 $291,561 $271,616 $262,015 $264,188 $271,706 $251,910 (000) 2046 2047 2048 2049 2050 2051 2052 2053 ROM Tonnes Produced 5,511 5,500 4,609 4,379 4,086 4,664 5,575 5,233 Clean Tonnes Produced 3,656 3,457 2,628 2,196 2,549 2,939 3,416 3,000 Mining Costs $118,803 $117,791 $106,758 $97,096 $96,499 $96,838 $99,077 $84,120 Preparation and Loading $25,705 $25,461 $22,042 $20,926 $20,478 $22,247 $25,054 $23,348 General & Administrative $8,237 $8,237 $8,237 $7,892 $7,892 $7,892 $7,892 $7,892 Royalties $38,157 $36,075 $27,424 $22,918 $26,605 $30,671 $35,650 $31,309 Property and Sales Related Taxes $3,036 $2,907 $2,369 $2,089 $2,318 $2,571 $2,881 $2,611 Total Capex $40,219 $38,024 $28,906 $24,157 $28,043 $32,328 $28,182 $16,500 Total $243,324 $237,453 $202,974 $181,653 $188,470 $200,150 $207,727 $174,012 (000) 2054 2055 2056 2057 2058 2059 2060 2061 ROM Tonnes Produced 2,698 — — ——Clean Tonnes Produced 1,712 — — ——Mining Costs $54,907 $506 $506 $506 $506 $506 $506 $506 Preparation and Loading $12,764 $- $- $- $- $- $- $- General & Administrative $7,376 $2,738 $865 $865 $806 $806 $806 $806 Royalties $16,725 $- $- $- $- $- $- $- Property and Sales Related Taxes $1,831 $332 $332 $332 $166 $166 $166 $166 Total Capex $- $- $- $- $- $- $- $- Total $98,012 $3,575 $1,703 $1,703 $1,478 $1,478 $1,478 $1,478 Notes Insurance Costs are included in G&A Cash Bonds Posted have been added to G&A Mining and G&A costs beyond production include Labor and some miscellaneous costs incurred during Reclamation. 19 Economic Analysis 19.1 Assumptions, Parameters and Methods A pre-feasibility LOM plan was prepared by MM&A for the Blue Creek operation. MM&A prepared mine projections and production timing forecasts based on coal seam characteristics. Production timing was carried out to depletion (exhaustion) of the coal reserve areas, which is projected for the year 2054. All costs and prices are based on 2023 constant United States real dollars. The mine plan, productivity expectations and cost estimates generally reflect historical performance by Warrior Met and efforts have been made to adjust plans and costs to reflect conditions at Blue Creek. MARSHALL MILLER & ASSOCIATES, INC. 73

MM&A is confident that the mine plan and financial model are reasonably representative to provide an accurate estimation of coal reserves. A capital forecast was developed by MM&A for mine development, infrastructure, and on-going capital requirements for the life of the mine. Staffing levels were prepared, and operating costs estimated by MM&A. MM&A utilized historical cost data provided by Warrior Met and its own knowledge and experience to estimate direct and indirect operating costs. The preliminary feasibility financial model, prepared for this TRS, was developed to test the economic viability of the coal reserve areas. Economic models include non-controlled tons which are expected to be acquired by Warrior Met. The results of this financial model are not intended to represent a bankable feasibility study, required for financing of any current or future mining operations, but are intended to prove the economic viability of the estimated coal reserves. All costs and prices are based on 2023 constant United States dollars. On an unlevered basis, the NPV of the real cash flows after taxes was estimated for the purpose of classifying coal reserves. The cash flows, excluding debt service, are calculated by subtracting direct and indirect operating expenses and capital expenditures from revenue. Direct costs include labor, operating supplies, maintenance and repairs, facilities costs for materials handling, coal preparation, refuse disposal, coal loading, sampling and analysis services, reclamation, and general and administrative costs. Indirect costs include statutory and legally agreed upon fees related to direct extraction of the mineral. The indirect costs are the federal black lung tax, federal reclamation taxes, property taxes, local transportation prior to delivery at rail or barge loading sites, coal production royalties, sales and use taxes, income taxes and State severance taxes. Warrior Met’s historical costs provided a useful reference for MM&A’s cost estimates. Sales revenue is based on the metallurgical coal price information provided to MM&A by Warrior Met, based on the HVA forecast. Projected debt service is excluded from the P&L and cash flow model to determine enterprise value. The financial model expresses coal sales prices, operating costs, and capital expenditures in current day dollars without adjustment for inflation. Capital expenditures and reclamation costs are included based on estimates for the mine by year. Warrior Met will pay royalties for the various current and projected operations. The royalty rates vary by mining method and location. The average royalty rate for Blue Creek is estimated to be 8.0% of the sales revenue FOB the mine after deduction of all transportation and loading costs between the mine and the vessel. The projection model also includes consolidated income tax calculations at the Warrior Met level, incorporating federal and state income taxes with an overall effective rate of 19%. To the extent the MARSHALL MILLER & ASSOCIATES, INC. 74

mine generates net operating losses for tax purposes, the losses are assumed to offset other corporate taxable income. The term “cash flows” is used in this report refers to after tax cash flows. Consolidated cash flows are driven by annual sales tonnage, which starts at 3.73 million tonnes in 2027, the first year of longwall production and averages 3.75 million tonnes per year from 2027 to 2053 the final full year of production. Projected consolidated revenue averages approximately $560.2 million per year during the period 2027 to 2053. Revenue totals $15.5 billion for the property’s life. Consolidated cash flow from the operation is positive throughout the projected operating period, with the exception of mine development years 2022 through 2026 and the post-production years, due to end-of-mine reclamation spending. Consolidated cash flow from the operation averages approximately 259.6 million per year from 2027 to 2053 and totals $6.5 billion over the mine life. Capital expenditures, excluding sunk cost through December 31, 2022, total $1.7 billion over the property’s life. Table 19-1 below shows the project LOM after-tax cash flows for the Blue Creek mine. Table 19-1: Blue Creek Project LOM After-tax Cash Flow Total (000) 2023 2024 2025 2026 2027 2028 2029 LOM Tonnes Produced 103,824 0 0 144 778 3,728 4,070 4,143 Tonnes Sold 103,824 0 0 24 778 3,728 4,070 4,143 Revenue $15,499,294 $0 $0 $2,765 $94,423 $512,129 $583,545 $610,566 Price ($/tonne FOB Mine) $149 $0 $0 $116 $121 $137 $143 $147 Mining Costs $3,478,536 $0 $0 $14,488 $52,612 $116,735 $126,004 $132,220 Preparation and Loading $792,913 $0 $0 $3,036 $12,799 $51,359 $29,350 $30,091 Royalties & non-income taxes $1,158,489 $664 $664 $741 $4,323 $37,034 $43,844 $45,744 General & Administrative $255,089 $1,165 $4,771 $4,067 $6,566 $8,423 $8,755 $8,755 Income Taxes $1,544,394 ($340) ($340) ($15,391) ($13,550) $37,333 $49,542 $51,261 Capital and Land Expenditures $1,727,729 $120,554 $168,625 $187,945 $133,171 $88,317 $23,518 $47,597 Reclamation and Closing Costs $12,990 $0 $0 $0 $0 $0 $0 $0 Total After Tax Cash Flow $6,529,156 ($122,044) ($173,721) ($192,122) ($101,499) $172,927 $302,532 $294,897 NPV at 9% Discount Factor $1,520,306 (000) 2030 2031 2032 2033 2034 2035 2036 2037 Tonnes Produced 4,205 4,297 4,256 3,911 4,153 3,914 3,440 4,488 Tonnes Sold 4,205 4,297 4,256 3,911 4,153 3,914 3,440 4,488 Revenue $632,357 $646,093 $639,907 $588,062 $624,503 $588,569 $517,331 $674,831 Price ($/tonne FOB Mine) $150 $150 $150 $150 $150 $150 $150 $150 Mining Costs $133,131 $134,853 $133,943 $130,650 $139,572 $136,412 $130,171 $143,800 Preparation and Loading $30,449 $30,749 $30,432 $29,367 $30,004 $29,146 $27,121 $31,389 Royalties & non-income taxes $47,280 $48,292 $47,836 $44,015 $46,701 $44,052 $38,800 $50,411 General & Administrative $8,755 $8,755 $8,755 $8,237 $8,237 $8,237 $8,237 $8,237 Income Taxes $55,819 $61,376 $61,145 $62,702 $67,295 $61,856 $51,246 $75,468 Capital and Land Expenditures $48,507 $48,339 $47,782 $42,364 $45,487 $42,670 $37,112 $51,025 Reclamation and Closing Costs $0 $0 $0 $0 $0 $0 $0 $0 Total After Tax Cash Flow $308,417 $313,729 $310,013 $270,729 $287,208 $266,196 $224,642 $314,501 MARSHALL MILLER & ASSOCIATES, INC. 75

(000) 2038 2039 2040 2041 2042 2043 2044 2045 Tonnes Produced 4,129 4,561 4,511 4,024 3,849 3,842 4,041 3,788 Tonnes Sold 4,129 4,561 4,511 4,024 3,849 3,842 4,041 3,788 Revenue $620,817 $685,863 $678,259 $605,064 $578,827 $577,676 $607,716 $569,539 Price ($/tonne FOB Mine) $150 $150 $150 $150 $150 $150 $150 $150 Mining Costs $138,523 $141,754 $141,175 $134,897 $131,034 $132,783 $134,669 $123,683 Preparation and Loading $29,835 $31,072 $30,484 $28,552 $27,239 $27,680 $28,490 $26,241 Royalties & non-income taxes $46,429 $51,224 $50,664 $45,268 $43,334 $43,249 $45,463 $42,649 General & Administrative $8,237 $8,237 $8,237 $8,237 $8,237 $8,237 $8,237 $8,237 Income Taxes $67,169 $77,597 $76,231 $64,665 $61,298 $60,799 $65,791 $61,889 Capital and Land Expenditures $44,920 $51,171 $49,569 $43,480 $42,302 $41,998 $44,850 $41,814 Reclamation and Closing Costs $0 $0 $0 $0 $0 $0 $0 $0 Total After Tax Cash Flow $285,704 $324,808 $321,899 $279,965 $265,384 $262,930 $280,216 $265,027 (000) 2046 2047 2048 2049 2050 2051 2052 2053 Tonnes Produced 3,656 3,457 2,628 2,196 2,549 2,939 3,416 3,000 Tonnes Sold 3,656 3,457 2,628 2,196 2,549 2,939 3,416 3,000 Revenue $549,790 $519,794 $395,149 $330,219 $383,346 $441,927 $513,668 $451,120 Price ($/tonne FOB Mine) $150 $150 $150 $150 $150 $150 $150 $150 Mining Costs $118,803 $117,791 $106,758 $97,096 $96,499 $96,838 $99,077 $84,120 Preparation and Loading $25,705 $25,461 $22,042 $20,926 $20,478 $22,247 $25,054 $23,348 Royalties & non-income taxes $41,193 $38,982 $29,793 $25,007 $28,923 $33,242 $38,530 $33,920 General & Administrative $8,237 $8,237 $8,237 $7,892 $7,892 $7,892 $7,892 $7,892 Income Taxes $59,596 $54,720 $36,036 $27,494 $37,560 $47,769 $59,810 $52,440 Capital and Land Expenditures $40,070 $37,478 $27,624 $25,278 $26,724 $31,224 $18,375 $9,377 Reclamation and Closing Costs $0 $0 $0 $0 $0 $0 $0 $0 Total After Tax Cash Flow $256,186 $237,126 $164,657 $126,527 $165,270 $202,715 $264,929 $240,024 (000) 2054 2055 2056 2057 2058 2059 2060 2061 Tonnes Produced 1,712 0 0 0 0 0 0 0 Tonnes Sold 1,832 0 0 0 0 0 0 0 Revenue $275,441 $0 $0 $0 $0 $0 $0 $0 Price ($/tonne FOB Mine) $150 $0 $0 $0 $0 $0 $0 $0 Mining Costs $54,907 $506 $506 $506 $506 $506 $506 $506 Preparation and Loading $12,764 $0 $0 $0 $0 $0 $0 $0 Royalties & non-income taxes $18,555 $332 $332 $332 $166 $166 $166 $166 General & Administrative $7,376 $2,738 $865 $865 $806 $806 $806 $806 Income Taxes $30,557 ($679) ($324) ($324) ($281) ($281) ($281) ($281) Capital and Land Expenditures ($3,528) $22,008 ($11) $0 ($6) $0 $0 $0 Reclamation and Closing Costs ($9,338) $11,450 $8,874 $1,260 $515 $115 $115 $0 Total After Tax Cash Flow $164,147 ($36,354) ($10,242) ($2,639) ($1,706) ($1,311) ($1,311) ($1,197) Note 1: G&A costs include Insurance premiums and Cash Bond posted. Note 2: Income Tax credits in development years are taken against other corporate income. Note 3: Capital and Land Expenditures include annual Working Capital adjustments. Note 4: Reclamation and Closing Costs include an adjustment for the projected residual value of Equipment. 19.2 Results Cash flow after tax, but before debt service, generated over the life of the property was discounted to NPV at a 9% discount rate, which represents Warrior’s typical WACC. On an un-levered basis, the NPV of the property cash flows represents the Enterprise Value of the property and amounts to $1.5 billion. The pre-feasibility financial model, prepared by MM&A for this TRS, was developed to test the economic viability of each coal resource area. The results of this financial model are not intended to represent a bankable feasibility study, as may be required for financing of any current or future mining operations contemplated but are intended to prove the economic viability of the estimated coal reserves. Optimization of the LOM plan was outside the scope of the engagement. Table 19-2 shows LOM tonnage, P&L, and EBITDA for Blue Creek. MARSHALL MILLER & ASSOCIATES, INC. 76

Table 19-2: Life-of-Mine Tonnage, P&L before Tax, and EBITDA Tonnes Pre-Tax P&L P&L EBITDA EBITDA (000) ($000) per Tonne ($000) per Tonne Blue Creek 103,824 $8,128,387 $78.29 $9,817,952 $94.56 Note 1: The LOM model includes tonnages contained within adverse tracts which are not included in reserve estimates. Note 2: The LOM model does not consider resources exclusive of reserves on the western portion of the property. Note 3: The LOM model and associated economic analysis is intended to prove the economic viability of the subject coal tonnage, allowing controlled tons to be classified as “reserve”. The exercise should not be construed to represent a valuation of Warrior Met’s holdings. Long-term cash flows incorporate forward-looking market projections which are expected to vary over time based upon historic volatility of coal markets. The development of costs incorporates a combination of Warrior Met’s historical performance and MM&A’s knowledge of mine productivity and cost structures for comparable operations. As shown in Table 19-2, Blue Creek has positive EBITDA over the LOM. Overall, the operation shows positive LOM P&L and EBITDA of $8.1 billion and $9.8 billion, respectively. Warrior Met’s Blue Creek annual production and revenue are shown in Figure 19-1 and the Mine’s after-tax cash flow summary in constant dollars, excluding debt service, is shown in Figure 19-2 below. Figure 19-1: Blue Creek Production and Revenue Note 1: The LOM model includes a portion of tonnage contained within adverse tracts which are not included in reserve estimates. Note 2: The LOM model and associated economic analysis is intended to prove the economic viability of the subject coal tonnage, allowing controlled tons to be classified as “reserve”. The exercise should not be construed to represent a valuation of Warrior Met’s holdings. Long-term cash flows incorporate forward-looking market projections which are expected to vary over time based upon historic volatility of coal markets. The development of costs incorporates a combination of Warrior Met’s historical performance and MM&A’s knowledge of mine productivity and cost structures for comparable operations. MARSHALL MILLER & ASSOCIATES, INC. 77

Figure 19-2: After-tax Cash Flow Summary (000) Note 1: The LOM model includes a portion of tonnage contained within adverse tracts which are not included in reserve estimates. Note 2: The LOM model and associated economic analysis is intended to prove the economic viability of the subject coal tonnage, allowing controlled tons to be classified as “reserve”. The exercise should not be construed to represent a valuation of Warrior Met’s holdings. Long-term cash flows incorporate forward-looking market projections which are expected to vary over time based upon historic volatility of coal markets. The development of costs incorporates a combination of Warrior Met’s historical performance and MM&A’s knowledge of mine productivity and cost structures for comparable operations. 19.3 Sensitivity Sensitivity of the NPV results to changes in the key drivers is presented in the chart below. The sensitivity study shows the NPV at the 9% discount rate when base case sales prices, operating costs, and capital costs are increased and decreased within a +/- 10% range. MARSHALL MILLER & ASSOCIATES, INC. 78

Figure 19-3: Sensitivity of NPV 19.4 Economic Analysis Summary This TRS, conducted in accordance with industry standards, is sufficient to conclude the Property has a reasonable potential of obtaining long-term shareholder value given forecast market conditions approaching those used in the analysis. The plan appears to be reasonable, complete, and capable of being executed under competent management. 20 Adjacent Properties 20.1 Information Used No Proprietary information associated with neighboring properties was used as part of this study. 21 Other Relevant Data and Information MM&A has performed various technical studies of the Property over the past decade. MM&A utilized this former work as the basis of an updated study which meets those standards set forth by the SEC. Additionally, MM&A has a longstanding history of various geological- and mining-based studies in the MARSHALL MILLER & ASSOCIATES, INC. 79

Black Warrior Basin, with specific projects conducted for Warrior Met in several operations adjacent to the Property during due diligence activities. This experience was utilized in the development of this TRS. 22 Interpretation and Conclusions 22.1 Conclusion Sufficient data have been obtained through various exploration and sampling programs and mining operations to support the geological interpretations of seam structure and thickness for coal horizons situated on the Property. The data are of sufficient quantity and reliability to reasonably support the coal resource and coal reserve estimates in this TRS. The geological data and TRS, which consider mining plans, revenue, and operating and capital cost estimates are sufficient to support the classification of coal reserves provided herein. This geologic evaluation conducted in conjunction with the feasibility study is sufficient to conclude that Warrior Met currently controls 68.2 million tonnes of marketable underground coal reserves identified on the Property. The LOM model includes 103.8 million tonnes, a portion of which are currently classified as mineral adverse and must be obtained to successfully engage in the venture. 22.2 Project Risk Assessment The MM&A project team identified project risks for operational, technical and administrative subjects related to the development of the Blue Creek Project. A risk matrix has been constructed to present the risk levels for all the risk factors identified and quantified in the risk assessment process. The risk matrix and risk assessment process are modelled to the standards presented in the Australian and New Zealand Standard on Risk Management (AS/NZS 4360). The purpose of the risk assessment presented herein is to inform project stakeholders of key aspects of the Project that can be impacted by events, the consequences of which could affect the success of the venture. The significance of an impacted aspect of the operation is directly related to both the probability of occurrence and the severity of the consequences. The initial risk for a risk factor is herein defined as the risk level after the potential impact of the risk factor is addressed by competent and prudent management utilizing control measures readily available. Residual risk for a risk factor is herein defined as the risk level following application of special mitigation measures if management determines that the initial risk level is unacceptable. Initial risk and residual risk can be quantified numerically, derived by the product of values assigned to probability and consequence ranging from very low risk to very high risk. MARSHALL MILLER & ASSOCIATES, INC. 80

Risk aspects identified and evaluated during this assignment total 25. No residual risks are rated Very High; 5 risk aspects are rated High; 10 of the risk aspects are classified as Moderate residual risk, and 10 of the risk aspects were attributed Low and Very Low residual risks. 22.2.1 Assumptions and Limitations Key assumptions in the risk assessment are outlined below. 1. The identification of project risks is not presumed to be exhaustive. Instead, that listing of risks is presented based on the experiences of the project team. 2. The probability and consequence ratings are subjectively assigned and are assumed to reasonably reflect the condition of the projected mine operations. 3. The Control Measures shown in the matrices presented in this chapter are not exhaustive. They represent a condensed collection of activities that the MM&A team has observed to be effective in coal mining scenarios. 4. Mitigation Measures listed for each risk factor of the operation are not exhaustive. The measures listed, however, have been observed to be effective. 5. The monetary values used in ranking the consequences are assumed to be appropriate for projected investment and expected size of the operation. The risk assessment is subject to the limitations of the information currently collected, tested, and interpreted at the effective date of the report. 22.2.2 Methodology The numerical quantities (i.e., risk levels) attributable to either “initial” or “residual” risks are derived by the product of values assigned to probability and consequence ranging from very low risk to very high risk. R = P x C Where: R = Risk Level P = Probability of Occurrence C = Consequence of Occurrence The Probability (P) and Consequence (C) parameters recited in the formula are subjective numerical estimates made by MM&A’s team of practiced mine engineers, geologists and managers. Both P and C are assigned integer values ranging from 1 to 5 for which the value 1 represents the lowest probability and least consequence, and the value 5 represents the highest probability and greatest consequence. The products (R = P x C) which define the Risk Level, are thereafter classified from very low to very high. MARSHALL MILLER & ASSOCIATES, INC. 81

Risk Level Table Risk Level (R) Very Low (1 to 2) Low (3 to 5) Moderate (6 to 11) High (12 to 19) Very High (20 to 25) Very high initial risks are considered to be unacceptable and require corrective action well in advance of project development. In short, measures must be applied to reduce very high initial risks to a tolerable level. After the consideration and application of mitigation factors, the residual risk can be determined. The residual risk provides a basis for the management team to determine if the residual risk level is acceptable or tolerable. If the risk level is determined to be unacceptable, further actions should be considered to reduce the residual risk to acceptable or tolerable levels to provide justification for continuation of the proposed operation. 22.2.3 Development of the Risk Matrix 22.2.3.1 Quantification of Risk Likelihood and Severity of Impact Risks have been identified for the technical, operational, and administrative activities expected to be encountered throughout the development, installation, and operation of the Project. The likelihood of risk occurrence was developed and quantified according to Table 22-1. Table 22-1: Probability Levels of Risks and Corresponding Values Category Probability Level (P) 1 Remote Not likely to occur except in exceptional circumstances. <10% 2 Unlikely Not likely to occur; small in degree. 10—30% 3 Possible Capable of occurring. 30—60% 4 Likely High chance of occurring in most circumstances. 60—90% 5 Almost Certain Event is expected under most circumstances; impossible to avoid. >90% The lowest rated probability of occurrence is assigned the value of 1 and described as remote, with a likelihood of occurrence of less than 10 percent. Increasing values are assigned to each higher probability of occurrence, culminating with the value of 5 assigned to incidents considered to be almost certain to occur. Consequences of each risk were estimated and quantified by MM&A according to the following Table 22-2. MARSHALL MILLER & ASSOCIATES, INC. 82

Table 22-2: Consequence Level Table Correlation of Events in Key Elements of the Project Program to Event Severity Category Unplanned Loss of Financial Production (Impact Events Affecting the Severity of Impact of on Commercial Events Impacting on Program’s Social and Resultant Regulatory / Events Affecting Category the Event the Event Operations) the Environment Community Relations Sovereign Risk Occupational Health & Safety Event recurrence avoided by Insignificant loss of corrective action through habitat; no irreversible Occasional nuisance 1 Insignificant < $1MM ? 12 hours established procedures effects on water, soil impact on travel. (Engineering, guarding, and the environment. training). No significant change to Persistent nuisance First aid – lost time. Event species populations; $1MM to impact on travel. recurrence avoided by 2 Minor ? 1 day short-term reversible $4MM Transient adverse corrective action thought perturbation to media coverage. established procedures. ecosystem function. Measurable impact on Uncertainty securing or Medical Treatment – Appreciable change to travel and water/air retaining essential approval permanent incapacitation species population; $4MM to quality. Significant / license. Avoiding event recurrence 3 Moderate ? 1 week medium-term (?10 $10MM adverse media requires modification to years) detriment to Change to regulations (tax; coverage / transient established corrective action ecosystem function. bonds; standards). public outrage. procedures. Long-term, serious Fatality. Avoiding event Change to species impact on travel and Suspension / long-delay in recurrence requires population threatening use of water resources; securing essential approval modification to established $10MM to 4 Major 1 to 2 weeks viability; long-term (>10 degradation of air / license. corrective action procedures $20MM years) detriment to quality; sustained and and staff retraining. ecosystem function. effective public Change to laws (tax; bonds; opposition. standards). Multiple fatalities. Avoiding Species extinction; Withdraw / failure to secure event recurrence requires 5 Critical > $20MM >1 month irreversible damage to Loss of permits. essential approval / license. major overhaul of policies and ecosystem function. procedures. MARSHALL MILLER & ASSOCIATES, INC. 83

The lowest rated consequence is assigned the value of 1 and is described as Insignificant Consequence parameters include non-reportable safety incidents with zero days lost accidents, no environmental damage, loss of production or systems for less than one week and cost of less than $2-million. Increasing values are assigned to each higher consequence, culminating with the value of 5 assigned to critical consequences, the parameters of which include multiple-fatality accidents, major environmental damage, and loss of production or systems for longer than six months and cost of greater than $20-million. Composite Risk Matrix R = P x C and Color-Code Convention The risk level, defined as the product of probability of occurrence and consequence, ranges in value from 1 (lowest possible risk) to 25 (maximum risk level). The values are color-coded to facilitate identification of the highest risk aspects. Table 22-3: Risk Matrix Consequence (C) P x C = R Insignificant Minor Moderate Major Critical 1 2 3 4 5 Remote 1 1 2 3 4 5 (P) Level Unlikely 2 2 4 6 8 10 Possible 3 3 6 9 12 15 Probability Likely 4 4 8 12 16 20 Almost 5 5 10 15 20 25 Certain 22.2.4 Categorization of Risk Levels and Color Code Convention Very high risks are considered to be unacceptable and require corrective action. Risk reduction measures must be applied to reduce very high risks to a tolerable level. 22.2.5 Summary of Residual Risk Ratings Each risk factor is numbered, and a risk level for each is determined by multiplying the assigned probability by the assigned consequence. The risk levels are plotted on a risk matrix, Table 22-4, to provide a composite view of the Warrior Met risk profile. The average risk level is 7.1, which is defined as Moderate. MARSHALL MILLER & ASSOCIATES, INC. 84

Table 22-4: Residual Risk Assessment Matrix Critical >$50 MM 8,9 Major $10-50MM 14 13 16 6 Moderate $2-10 MM 7 4, 15 1,3 11 Consequence Minor $0.5-$2 MM 2 12 5 Low <$0.5 MM 10 <10% 10-30% 30-60% 60-90% >90% Remote Unlikely Possible Likely Almost Certain 22.2.6 Risk Factors A high-level approach is utilized to characterize risk factors that are generally similar across a number of active and proposed mining operations in the region. Risk factors that are unique to a specific operation or are particularly noteworthy are addressed individually. 22.2.6.1 Geological and Coal Resource Coal mining is accompanied by risk that, despite exploration efforts, mining areas will be encountered where geological conditions render extraction of the resource to be uneconomic (such as faulting), or coal quality characteristics that may disqualify the product for sale into target markets. Offsetting the geological and coal resource risk are the massive size of the controlled property which allows large areas to be mined in the preferred mine areas sufficiently away from areas where coal quality and/or mineability may be less favorable. This flexibility, combined with the extensive work done to define the reserve, reduces the risk at BC below that of other mine properties. MARSHALL MILLER & ASSOCIATES, INC. 85

Table 22-5: Geological and Coal Resource Risk Assessment (Risks 1 and 2) Initial Risk Level Residual Risk Level Aspect Impact Control Measures Mitigation Measures P C R P C R Recoverable coal Reserve base is adequate to Previous and ongoing 4 4 16 Optimize mine plan to 3 3 9 tonnes recognized to serve market commitments exploration and extensive increase resource be significantly less and respond to opportunities regional mining history recovery; develop than previously for many years. Local provide a high level of mine plan to provide estimated, including adverse conditions may confidence of coal seam readily available impacts of faulting. increase frequency and cost correlation, continuity of alternate mining Impacts of faulting & of production unit the coal seams, and coal locations to sustain associated relocations. Potential cost resource tonnes. Attempt expected production geotechnical & overruns and project delays. to locate coal level. Continue to hydrogeological Reduced productivity on barriers and mains away conduct significant result in project CM and LW sections; from areas exhibiting drilling ahead of delays and increased roof control poor mineabilty; conduct mining and project operational cost on CM sections and hazard mapping and infrastructure challenges, including LW gateroads; training to reduce installation. Assess decreased accident risk; conduct geomechanical productivity. ongoing exploration to characteristics of roof locate problem areas in and floor ahead of ample time to allow mine development, adjustment to mine plan shaft & slope installation. Coal quality locally If uncontrolled, production Exploration and vast 2 3 6 Develop mine plan to 1 2 2 proves to be lower and sale of coal that is out of experience and history in provide readily than initially projected. specification can result in local coal seams provide available alternate rejection of deliveries, confidence in coal quality; mining locations to cancellation of coal sales limited excursions can be sustain expected agreements and damage to managed with careful production level; reputation. product segregation and modify coal sales blending. agreements to reflect coal quality. 22.2.6.1 Environmental Water quality and other permit requirements are subject to modification and such changes could have a material impact on the capability of the operator to meet modified standards or to receive new permits and modifications to existing permits. Permit protests may result in delays or denials to permit applications. Environmental standards and permit requirements have evolved significantly over the past 50 years and to-date, mining operators and regulatory bodies have been able to adapt successfully to evolving environmental requirements. MARSHALL MILLER & ASSOCIATES, INC. 86

Table 22-6: Environmental (Risks 3 and 4) Residual Risk Initial Risk Level Level Aspect Impact Control Measures P C R Mitigation Measures P C R Environmental Delays in receiving new Work with regulatory 3 4 12 Modify mining and 3 3 9 performance standards permits and modifications to agencies to understand and reclamation plans to improve are modified in the existing permits; cost of influence final standards; compliance with new future. testing and treatment of water implement testing, treatment standards while reducing and soils and other actions to comply cost of compliance. with new standards. New permits and permit Interruption of production and Comply quickly with testing, 2 4 8 Establish and maintain close 2 3 6 modifications are delayed implementation of treatment and other actions and constructive working increasingly delayed or replacement production from required; continue excellent relationships with regulatory denied. new mining areas. compliance performance agencies, local communities within existing permits. and community action groups. Prepare and submit permits well in advance of needs. Conduct additional drilling to lower risk associated with quality concerns in suspect areas. 22.2.6.2 Regulatory Requirements Federal and state health and safety regulatory agencies occasionally amend mine laws and regulations. The impact is industry wide. Mining operators and regulatory agencies have been able to adapt successfully to evolving health and safety requirements. Table 22-7: Regulatory Requirements (Risk 5) Initial Risk Level Mitigation Residual Risk Level Aspect Impact Control Measures P C R Measures P C R Federal and state mine Cost of training, materials, Participate in hearings and 4 3 12 Familiarity and 4 2 8 safety and health supplies and equipment; workshops when possible to experience with new regulatory agencies modification of mine facilitate understanding and laws and regulations amend mine laws and examination and production implementation; work results in reduced regulations. procedures; modification of cooperatively with agencies impact to operations mining plans. and employees to facilitate and productivity and implementation of new laws improved supplies and regulations. and equipment options. 22.2.6.3 Market and Transportation Most of the current and future production is expected to be directed to domestic and international metallurgical markets. Historically the metallurgical markets have been cyclical and highly volatile. MARSHALL MILLER & ASSOCIATES, INC. 87

Table 22-8: Market (Risk 6) Initial Risk Level Mitigation Residual Risk Level Aspect Impact Control Measures P C R Measures P C R Volatile coal prices drop Loss of revenue adversely Cost control measures 4 5 20 High-cost operations 4 4 16 precipitously. affects profitability; reduced implemented; capital closed, and cash flow may disrupt capital spending deferred. employees expenditures plan. temporarily furloughed. Occasional delay or interruption of rail, river and terminals service may be expected. The operator can possibly minimize the impact of delays by being a preferred customer by fulfilling shipment obligations promptly and maintaining close working relationships. Multiple shipment means (rail and barge) help minimize this risk. Table 22-9: Transportation (Risk 7) Initial Risk Level Mitigation Residual Risk Level Aspect Impact Control Measures P C R Measures P C R Rail or river transport is Fulfillment of coal sales Provide adequate storage 2 3 6 Provide back-up 1 3 3 delayed; storage and agreements delayed; limited capacity at mines; storage facility along shipping access at river coal storage at mines may coordinate continuously with with personnel, and ocean terminals is not increase cost of rehandling; railroad and shipping equipment and available. production may be temporarily companies to respond rehandle plan to idled. quickly and effectively to sustain production changing circumstances. and fulfill sales obligations timely. 22.2.6.4 Mining Plan Occupational health and safety risks are inherent in mining operations. Comprehensive training and retraining programs, internal safety audits and examinations, regular mine inspections, safety meetings, along with support of trained fire brigades and mine-rescue teams are among activities that greatly reduce accident risks. Employee health-monitoring programs coupled with dust and noise monitoring and abatement reduce health risks to miners. As underground mines are developed and extended, observation of geological, hydrogeological and geotechnical conditions leads to modification of mine plans and procedures to enable safe work within the mine environment. Highlighted below are selected examples of safety and external factors relevant to Warrior Met operations. 22.2.6.4.1 Methane Management Coalbed methane is present in coal operations below drainage. Often the methane concentration in shallow coal seams is at such low levels that it can be readily managed with frequent testing and MARSHALL MILLER & ASSOCIATES, INC. 88

monitoring, vigilance, and routine mine ventilation. Very high methane concentrations may be present at greater depths, as experienced in the Mary Lee and Blue Creek seams at the BC Property in Alabama. High methane concentrations may require degasification of the coal seams to assure safe mining. Proximal mines have operated safely for many years in one of the most intense methane environments in the United States through careful management of coal seam degasification, gob degasification and mine-ventilation procedures. Table 22-10: Methane Management (Risk 8) Initial Risk Level Mitigation Residual Risk Level Aspect Impact Control Measures P C R Measures P C R Methane hazard is present Injury or loss of life; possible Low to moderate levels can 2 5 10 Very high-level 1 5 5 in mines operating below ignition of gas and mine be managed with frequent methane drainage. explosion; potential loss of examinations, testing and concentrations may mine and equipment monitoring within the mine require coal seam temporarily or permanently; ventilation system. degasification and additional mine fan, mine Excellent rock dust gob degasification if power, ventilation, monitoring maintenance minimizes long wall or pillar and examination requirements. explosion propagation risk extraction methods should an ignition occur. are employed. 22.2.6.4.2 Mine Fires Mine fires, once common at mine operations, are rare today. Most active coal miners have not encountered a mine fire. Vastly improved mine power and equipment electrical systems, along with safe mine practices, reduce mine fire risks. Crew training and fire brigade support and training improve response for containment and control if a fire occurs. Spontaneous combustion within coal mines, which is the source of most fires that occur today, is not expected to occur at BC. Table 22-11: Mine Fires (Risk 9) Initial Risk Level Residual Risk Level Aspect Impact Control Measures P C R Mitigation Measures P C R Mine fire at underground Injury or loss of life; Inspection and maintenance 1 5 5 If spontaneous 1 5 5 or operation. potential loss of mine of mine power, equipment combustion conditions temporarily or permanently; and mine infrastructure; are present, enhanced damage to equipment and good housekeeping; monitoring and mine infrastructure. frequent examination of examination procedures conveyor belt entries; will be implemented; prompt removal of mine design will accumulations of incorporate features to combustible materials. facilitate isolation, containment and extinguishment of spontaneous combustion locations. MARSHALL MILLER & ASSOCIATES, INC. 89

22.2.6.4.3 Availability of Supplies and Equipment The industry has periodically experienced difficulty receiving timely delivery of mine supplies and equipment. Availability issues often accompanied boom periods for coal demand. Any future delivery of supplies and equipment delays are expected to be temporary with limited impact on production. Table 22-12: Availability of Supplies and Equipment (Risk 10) Initial Risk Level Mitigation Residual Risk Level Aspect Impact Control Measures P C R Measures P C R Disruption of availability Temporary interruption of Force majeure provision in 3 2 6 Work closely with 3 1 3 for supplies and production. coal sales agreements to customers to assure equipment. limit liability for delayed or delayed coal delivery lost sales. rather than cancelled sales; monitor external conditions and increase inventory of critical supplies; accelerate delivery of equipment when possible. 22.2.6.4.4 Labor Work stoppage due to labor protests are considered unlikely and are accompanied by limited impact should it occur. Excellent employee relations and communications limit the exposure to outside protesters. Loss of supervisors and skilled employees to retirement is inevitable; the impact can be lessened with succession planning and training and training and mentorship of new employees. Table 22-13: Labor – Work Stoppage (Risk 11) Initial Risk Level Mitigation Residual Risk Level Aspect Impact Control Measures P C R Measures P C R Work stoppage due to Loss of production and coal Maintain excellent employee 4 4 16 Develop plan for 4 3 12 strikes, slowdowns or sales; damaged customer and relations and employee secondary boycott activity. employee relations; reputation communications; maintain communications and loss. frequent customer legal support to communications. Train minimize impact of salary employees for hourly secondary boycott tasks in case of long-term activities. strike. MARSHALL MILLER & ASSOCIATES, INC. 90

Table 22-14: Labor – Retirement (Risk 12) Initial Risk Level Mitigation Residual Risk Level Aspect Impact Control Measures P C R Measures P C R Retirement of supervisors Loss of leadership and critical Monitor demographics 3 3 9 Maintain selection of 3 2 6 and skilled employees. skills to sustain high levels of closely and maintain candidates and safety, maintenance and communications with implementation of in-productivity. employees who are house or third-party approaching retirement age; training for maintain employee selection electricians and and training programs. mechanics; develop employee mentoring program. 22.2.6.4.5 Project Execution Surface facilities construction commenced via a previous owner of the Property and permitting/engineering activity is actively underway by Warrior Met. The experienced and highly qualified executive management team improves the likelihood that the major construction project will be completed within the expected time frame and budget. As construction of the Blue Creek complex continues, the executive management team will be challenged to assemble an experienced and highly competent operations team to execute the mining plan to avoid production short-falls and cost overruns. Key will be establishing a reasonable development schedule and predicating coal sales commitments to management’s ability to select and train its workforce. The experience and capability of the executive team provides confidence that operational readiness will be forthcoming. Risks pertaining to project execution are summarized below. Table 22-15: Construction Delays and Cost Overruns (Risk 13) Initial Risk Level Residual Risk Level No. Aspect Impact Control Measures P C R Mitigation Measures P C R 21 Project Excessive cost and Realistic budget and 3 4 12 Preparation of 2 4 8 construction time diminish project construction detailed schedule of phase time and project investment schedule developed; each construction cost exceeds return; additional continuous component; daily expectations. project financing monitoring of cost review of progress may be required; and time to readily and issues; weekly coal sales detect performance coordination with all commitments be shortcomings and contractors and delayed. implement corrective implementation of actions; utilization of corrective actions if competent, highly project falls behind reputable contractors schedule. and subcontractors. MARSHALL MILLER & ASSOCIATES, INC. 91

Table 22-16: Permitting Delays (Risk 14) Initial Risk Level Residual Risk Level No. Aspect Impact Control Measures P C R Mitigation Measures P C R 22 Permitting delays Lack of ample time Initiate key 2 4 8 Incorporate 1 4 4 (SMCRA, ACOE, to acquire state and permitting contingencies into MSHA, etc.) federal permits requirements development result in delays delay production immediately, schedule. of construction and require including those and production. additional working related to barge capital. development and refuse impoundments. Table 22-17: Select, Isolated Parcels of Uncontrolled Mineral (non-BLM lease) within Mine Plan (Risk 15) Initial Risk Level Residual Risk Level No. Aspect Impact Control Measures P C R Mitigation Measures P C R 10 Select, Isolated Payment of Company has secured 5 2 10 As last resort, pay 2 3 6 Parcels of extortionary terms vast majority of land above-market price Uncontrolled to secure mining titles for to secure mining right Mineral within rights; adjustment of development and or adjust mine plan to Mine Plan mine plan to avoid mining of initial avoid adverse tracts. prohibit adverse tracts. panels; continue execution of efforts to secure mine plan. These timely title parcels are acquisition; mine plan associated with defers production on private (non- adverse tracts to governmental) allow time to secure entities and at reasonable cost. individuals. Table 22-18: Select, Isolated Parcels of Uncontrolled Mineral (BLM lease) within Mine Plan (Risk 16) Initial Risk Level Residual Risk Level No. Aspect Impact Control Measures P C R Mitigation Measures P C R 11 Select, Isolated Adjustment of mine Company is actively 3 5 15 Develop mine plan to 3 4 12 Parcels of plan to avoid pursuing BLM leases. eliminate Uncontrolled adverse tracts. Of Such activity should requirement for BLM Mineral within important note, be prioritized to leases as last resort. Mine Plan various presidential ensure that ample prohibit candidates have time to secure leases execution of stated desire to limit is available. mine plan. These leasing of federally parcels are owned mineral affiliated with rights in an effort to Federal Bureau reduce fossil fuel of Land and natural resource Management production. (BLM) leases. MARSHALL MILLER & ASSOCIATES, INC. 92

23 Recommendations Warrior Met is continuing to conduct ongoing geological campaigns to better define coal thickness, coal quality, and structure within the initial mine plan areas. As part of this campaign, significant efforts are being placed in defining fault networks proximal to the slope bottom and initial long wall districts. MM&A recommends continuing efforts in this regard. During this campaign, MM&A also recommends analyzing roof and floor samples for various geomechanical factors. MM&A recommends expediting the BLM lease acquisition process, as multiple key leases need to be obtained to execute the mine plan. 24 References 1. Various sources of geological information, including a digital exploration database, coal quality laboratory information, drillers’ and geologists’ logs, and geophysical logs. 2. Various engineering, permitting and mine plans as presented to MM&A by Warrior Met. 3. Various previous engineering and reserve reports conducted on behalf of Warrior Met by MM&A. 4. Publicly available information from various State and Federal agencies 5. Various mapping information obtained via the public domain. 25 Reliance on Information Provided by Registrant The qualified persons responsible for the development of this TRS have relied upon information provide by Warrior Met, including: 1. Marketing Information, including sales forecasts coal and transportation costs. 2. Legal Matters, including mineral and surface-based land and tenure. 3. Environmental Matters, including permit status, plans and refuse disposal plans and associated volumes. MARSHALL MILLER & ASSOCIATES, INC. 93

APPENDIX A TABLE

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total BC Area Block A Leased Continuous Mining ML 1,938 84.40% 528,895 300,323 829,218 Longwall Mining ML 1,938 84.40% 1.44 1.47 2,526 1,304 3,830 6,405,561 3,373,213 9,778,774 3,632,138 1,808,969 5,441,107 Continuous Mining BC 1,851 87.60% 1,655,730 865,666 2,521,396 4.60 4.32 2,526 1,304 3,830 19,529,661 9,468,317 28,997,978 Longwall Mining BC 1,851 87.60% 11,574,941 5,358,563 16,933,504 Total 3.82 3.57 5,052 2,608 7,659 25,935,222 12,841,530 38,776,752 17,391,703 8,333,521 25,725,225 Owned Continuous Mining ML 1,938 84.40% 46,396 29 46,426 Longwall Mining ML 1,938 84.40% 1.51 1.57 201 1 202 531,583 2,132 533,715 267,446 1,810 269,256 Continuous Mining BC 1,851 87.60% 151,275 98 151,373 5.07 5.26 201 1 202 1,710,960 6,804 1,717,764 Longwall Mining BC 1,851 87.60% 918,407 6,018 924,425 Total 4.23 4.38 402 2 403 2,242,543 8,936 2,251,479 1,383,525 7,956 1,391,481 Option Continuous Mining ML 1,938 84.40% 45,253 3,360 48,613 Longwall Mining ML 1,938 84.40% 1.67 1.32 135 10 146 396,830 24,086 420,916 160,532 10,880 171,412 Continuous Mining BC 1,851 87.60% 133,721 6,238 139,959 5.04 2.68 135 10 146 1,146,056 46,802 1,192,858 Longwall Mining BC 1,851 87.60% 501,001 23,746 524,747 Total 4.17 2.22 271 21 292 1,542,886 70,887 1,613,773 840,507 44,223 884,730 Adverse Continuous Mining ML 1,938 84.40% 129,537 242,117 371,654 Longwall Mining ML 1,938 84.40% 1.53 1.48 604 1,059 1,663 1,619,443 2,762,496 4,381,939 1,031,699 1,566,045 2,597,744 Continuous Mining BC 1,851 87.60% 317,864 532,789 850,654 3.99 3.40 604 1,059 1,663 4,049,075 6,038,922 10,087,997 Longwall Mining BC 1,851 87.60% 2,733,026 3,663,199 6,396,224 Total 3.29 2.80 1,207 2,118 3,326 5,668,518 8,801,418 14,469,936 4,212,126 6,004,150 10,216,276 Total Continuous Mining—ML_Only 620,544 303,712 924,256 2,862 1,315 4,177 7,333,974 3,399,431 10,733,405 Longwall Mining—ML_Only 4,060,117 1,821,658 5,881,775 Continuous Mining—BC_Only 1,940,725 872,002 2,812,728 2,862 1,315 4,177 22,386,677 9,521,923 31,908,599 Longwall Mining—BC_Only 12,994,349 5,388,327 18,382,676 Total 5,724 2,630 8,354 29,720,651 12,921,353 42,642,004 19,615,736 8,385,700 28,001,436 Owned 402 2 403 2,242,543 8,936 2,251,479 1,383,525 7,956 1,391,481 Leased 5,052 2,608 7,659 25,935,222 12,841,530 38,776,752 17,391,703 8,333,521 25,725,225 Option 271 21 292 1,542,886 70,887 1,613,773 840,507 44,223 884,730 Total 5,724 2,630 8,354 29,720,651 12,921,353 42,642,004 19,615,736 8,385,700 28,001,436 -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 1 of 9

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total Block B Leased Continuous Mining ML 1,938 84.40% 178,756 85,600 264,356 Longwall Mining ML 1,938 84.40% 1.84 1.90 655 408 1,063 2,119,184 1,360,914 3,480,098 1,256,224 811,296 2,067,519 Continuous Mining BC 1,851 87.60% 413,267 167,854 581,122 4.39 3.82 655 408 1,063 4,832,937 2,619,442 7,452,380 Longwall Mining BC 1,851 87.60% 3,012,853 1,689,496 4,702,350 Total 3.61 3.16 1,310 816 2,126 6,952,122 3,980,356 10,932,477 4,861,100 2,754,246 7,615,347 Owned Continuous Mining ML 1,938 84.40% 98,159 24,640 122,799 Longwall Mining ML 1,938 84.40% 1.76 1.82 226 104 330 697,734 333,372 1,031,106 159,074 152,981 312,055 Continuous Mining BC 1,851 87.60% 250,852 59,327 310,178 4.23 4.45 226 104 330 1,602,225 776,677 2,378,902 Longwall Mining BC 1,851 87.60% 351,470 370,853 722,323 Total 3.48 3.66 451 208 659 2,299,959 1,110,050 3,410,009 859,555 607,801 1,467,356 Option Continuous Mining ML 1,938 84.40% 89,491 53,657 143,148 Longwall Mining ML 1,938 84.40% 1.84 1.87 366 273 639 1,186,888 897,841 2,084,729 756,970 596,420 1,353,390 Continuous Mining BC 1,851 87.60% 214,146 109,197 323,343 4.30 3.90 366 273 639 2,640,580 1,786,111 4,426,691 Longwall Mining BC 1,851 87.60% 1,740,903 1,252,288 2,993,191 Total 3.54 3.22 732 546 1,278 3,827,468 2,683,952 6,511,420 2,801,511 2,011,561 4,813,072 Adverse Continuous Mining ML 1,938 84.40% 170,657 73,545 244,202 Longwall Mining ML 1,938 84.40% 1.81 1.91 661 268 929 2,101,068 901,279 3,002,347 1,161,703 488,407 1,650,110 Continuous Mining BC 1,851 87.60% 383,219 142,514 525,733 4.16 3.95 661 268 929 4,616,211 1,779,970 6,396,180 Longwall Mining BC 1,851 87.60% 2,649,060 1,053,382 3,702,443 Total 3.42 3.26 1,322 537 1,859 6,717,279 2,681,249 9,398,527 4,364,639 1,757,848 6,122,487 Total Continuous Mining—ML_Only 366,406 163,896 530,303 1,247 785 2,032 4,003,807 2,592,127 6,595,933 Longwall Mining—ML_Only 2,172,268 1,560,697 3,732,965 Continuous Mining—BC_Only 878,265 336,378 1,214,643 1,247 785 2,032 9,075,742 5,182,231 14,257,973 Longwall Mining—BC_Only 5,105,227 3,312,638 8,417,864 Total 2,493 1,570 4,064 13,079,548 7,774,358 20,853,906 8,522,166 5,373,609 13,895,775 Owned 451 208 659 2,299,959 1,110,050 3,410,009 859,555 607,801 1,467,356 Leased 1,310 816 2,126 6,952,122 3,980,356 10,932,477 4,861,100 2,754,246 7,615,347 Option 732 546 1,278 3,827,468 2,683,952 6,511,420 2,801,511 2,011,561 4,813,072 Total 2,493 1,570 4,064 13,079,548 7,774,358 20,853,906 8,522,166 5,373,609 13,895,775 -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 2 of 9

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total Block C Leased Continuous Mining ML 1,938 84.40% 77,353 164,891 242,243 Longwall Mining ML 1,938 84.40% 2.01 2.06 266 625 891 937,503 2,266,647 3,204,150 485,181 1,382,161 1,867,342 Continuous Mining BC 1,851 87.60% 134,733 260,691 395,424 3.45 3.30 266 625 891 1,538,686 3,466,309 5,004,994 Longwall Mining BC 1,851 87.60% 786,704 2,192,024 2,978,729 Total 2.90 2.81 532 1,251 1,783 2,476,189 5,732,956 8,209,144 1,483,971 3,999,767 5,483,738 Owned Continuous Mining ML 1,938 84.40% 86,568 5,937 92,505 Longwall Mining ML 1,938 84.40% 1.85 1.84 267 43 310 866,407 138,563 1,004,970 335,174 91,659 426,833 Continuous Mining BC 1,851 87.60% 183,982 13,598 197,581 4.06 4.15 267 43 310 1,819,414 298,364 2,117,778 Longwall Mining BC 1,851 87.60% 739,930 203,291 943,221 Total 3.35 3.42 534 86 619 2,685,821 436,928 3,122,748 1,345,654 314,485 1,660,139 Option Continuous Mining ML 1,938 84.40% 85,955 8,646 94,601 Longwall Mining ML 1,938 84.40% 1.95 1.81 276 24 300 945,232 76,575 1,021,808 452,340 43,318 495,658 Continuous Mining BC 1,851 87.60% 159,801 14,653 174,454 3.63 3.22 276 24 300 1,682,502 130,317 1,812,819 Longwall Mining BC 1,851 87.60% 835,800 78,828 914,628 Total 3.03 2.70 552 48 600 2,627,734 206,893 2,834,627 1,533,896 145,445 1,679,341 Adverse Continuous Mining ML 1,938 84.40% 261,913 439,847 701,760 Longwall Mining ML 1,938 84.40% 1.96 2.00 870 1,401 2,271 2,992,731 4,926,813 7,919,544 1,550,727 2,813,242 4,363,969 Continuous Mining BC 1,851 87.60% 474,653 710,880 1,185,533 3.60 3.31 870 1,401 2,271 5,256,257 7,782,876 13,039,133 Longwall Mining BC 1,851 87.60% 2,802,481 4,648,768 7,451,248 Total 3.00 2.80 1,740 2,802 4,542 8,248,988 12,709,689 20,958,677 5,089,774 8,612,736 13,702,511 Total Continuous Mining—ML_Only 249,875 179,474 429,349 809 692 1,501 2,749,142 2,481,786 5,230,929 Longwall Mining—ML_Only 1,272,694 1,517,138 2,789,832 Continuous Mining—BC_Only 478,516 288,942 767,459 809 692 1,501 5,040,601 3,894,990 8,935,591 Longwall Mining—BC_Only 2,362,434 2,474,143 4,836,577 Total 1,618 1,385 3,002 7,789,744 6,376,776 14,166,519 4,363,520 4,459,697 8,823,218 Owned 534 86 619 2,685,821 436,928 3,122,748 1,345,654 314,485 1,660,139 Leased 532 1,251 1,783 2,476,189 5,732,956 8,209,144 1,483,971 3,999,767 5,483,738 Option 552 48 600 2,627,734 206,893 2,834,627 1,533,896 145,445 1,679,341 Total 1,618 1,385 3,002 7,789,744 6,376,776 14,166,519 4,363,520 4,459,697 8,823,218 -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 3 of 9

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total Block D Leased Continuous Mining ML 1,938 84.40% 185,958 132,621 318,578 Longwall Mining ML 1,938 84.40% 1.43 1.42 1,001 569 1,570 2,509,673 1,415,444 3,925,117 977,711 612,416 1,590,127 Continuous Mining BC 1,851 87.60% 589,882 366,679 956,561 4.54 4.08 1,001 569 1,570 7,628,510 3,894,591 11,523,100 Longwall Mining BC 1,851 87.60% 3,027,804 1,668,629 4,696,432 Total 3.77 3.37 2,002 1,137 3,139 10,138,182 5,310,035 15,448,217 4,781,354 2,780,345 7,561,699 Owned Continuous Mining ML 1,938 84.40% 252,820 70,468 323,288 Longwall Mining ML 1,938 84.40% 1.58 1.57 877 212 1,089 2,442,986 583,347 3,026,333 1,175,182 304,564 1,479,746 Continuous Mining BC 1,851 87.60% 676,597 178,158 854,754 4.32 4.16 877 212 1,089 6,357,416 1,479,719 7,837,135 Longwall Mining BC 1,851 87.60% 3,142,944 827,773 3,970,717 Total 3.56 3.43 1,754 423 2,177 8,800,402 2,063,066 10,863,468 5,247,542 1,380,963 6,628,505 Option Continuous Mining ML 1,938 84.40% 0 0 0 Longwall Mining ML 1,938 84.40% 0.00 0.00 0 0 0 0 0 0 0 0 0 Continuous Mining BC 1,851 87.60% 0 0 0 0.00 0.00 0 0 0 0 0 0 Longwall Mining BC 1,851 87.60% 0 0 0 Total 0.00 0.00 0 0 0 0 0 0 0 0 0 Adverse Continuous Mining ML 1,938 84.40% 34,184 125,746 159,930 Longwall Mining ML 1,938 84.40% 1.53 1.58 119 302 421 318,277 838,466 1,156,743 180,616 283,022 463,638 Continuous Mining BC 1,851 87.60% 72,037 248,607 320,644 3.66 3.35 119 302 421 728,978 1,698,278 2,427,255 Longwall Mining BC 1,851 87.60% 454,721 641,389 1,096,110 Total 3.01 2.76 237 604 841 1,047,254 2,536,743 3,583,998 741,559 1,298,763 2,040,322 Total Continuous Mining—ML_Only 438,778 203,089 641,866 1,878 780 2,658 4,952,659 1,998,792 6,951,450 Longwall Mining—ML_Only 2,152,893 916,981 3,069,874 Continuous Mining—BC_Only 1,266,478 544,837 1,811,316 1,878 780 2,658 13,985,926 5,374,309 19,360,235 Longwall Mining—BC_Only 6,170,747 2,496,401 8,667,149 Total 3,756 1,560 5,316 18,938,585 7,373,101 26,311,685 10,028,896 4,161,308 14,190,204 Owned 1,754 423 2,177 8,800,402 2,063,066 10,863,468 5,247,542 1,380,963 6,628,505 Leased 2,002 1,137 3,139 10,138,182 5,310,035 15,448,217 4,781,354 2,780,345 7,561,699 Option 0 0 0 0 0 0 0 0 0 Total 3,756 1,560 5,316 18,938,585 7,373,101 26,311,685 10,028,896 4,161,308 14,190,204 -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 4 of 9

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total Block E1 Leased Continuous Mining ML 1,977 0.00% 26,828 201,753 228,581 Longwall Mining ML 1,977 0.00% 0.00 1.83 0 919 919 0 3,014,022 3,014,022 66,878 1,015,652 1,082,530 Continuous Mining BC 1,960 0.00% 37,986 282,220 320,207 0.00 2.72 0 919 919 0 4,444,027 4,444,027 Longwall Mining BC 1,960 0.00% 137,057 1,501,101 1,638,158 Total 0.00 2.36 0 1,837 1,837 0 7,458,050 7,458,050 268,749 3,000,726 3,269,476 Owned Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 0.00 0 0 0 0 0 0 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 0.00 0 0 0 0 0 0 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 0.00 0 0 0 0 0 0 0 0 0 Option Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 0.00 0 0 0 0 0 0 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 0.00 0 0 0 0 0 0 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 0.00 0 0 0 0 0 0 0 0 0 Adverse Continuous Mining ML 1,977 0.00% 50,941 231,558 282,499 Longwall Mining ML 1,977 0.00% 0.00 1.76 0 993 993 0 3,124,291 3,124,291 438,594 782,583 1,221,178 Continuous Mining BC 1,960 0.00% 62,298 325,510 387,807 0.00 2.54 0 993 993 0 4,484,016 4,484,016 Longwall Mining BC 1,960 0.00% 517,321 1,153,451 1,670,772 Total 0.00 2.22 0 1,985 1,985 0 7,608,307 7,608,307 1,069,155 2,493,102 3,562,256 Total Continuous Mining—ML_Only 26,828 201,753 228,581 0 919 919 0 3,014,022 3,014,022 Longwall Mining—ML_Only 66,878 1,015,652 1,082,530 Continuous Mining—BC_Only 37,986 282,220 320,207 0 919 919 0 4,444,027 4,444,027 Longwall Mining—BC_Only 137,057 1,501,101 1,638,158 Total 0 1,837 1,837 0 7,458,050 7,458,050 268,749 3,000,726 3,269,476 Owned 0 0 0 0 0 0 0 0 0 Leased 0 1,837 1,837 0 7,458,050 7,458,050 268,749 3,000,726 3,269,476 Option 0 0 0 0 0 0 0 0 0 Total 0 1,837 1,837 0 7,458,050 7,458,050 268,749 3,000,726 3,269,476 -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 5 of 9

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total Block E2 Leased Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 1.04 0 1,185 1,185 0 2,199,760 2,199,760 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 2.30 0 1,185 1,185 0 4,845,230 4,845,230 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 1.90 0 2,370 2,370 0 7,044,990 7,044,990 0 0 0 Owned Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 0.00 0 0 0 0 0 0 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 0.00 0 0 0 0 0 0 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 0.00 0 0 0 0 0 0 0 0 0 Option Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 0.00 0 0 0 0 0 0 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 0.00 0 0 0 0 0 0 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 0.00 0 0 0 0 0 0 0 0 0 Adverse Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 1.01 0 633 633 0 1,151,327 1,151,327 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 2.24 0 633 633 0 2,524,152 2,524,152 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 1.86 0 1,266 1,266 0 3,675,478 3,675,478 0 0 0 Total Continuous Mining—ML_Only 0 0 0 0 1,185 1,185 0 2,199,760 2,199,760 Longwall Mining—ML_Only 0 0 0 Continuous Mining—BC_Only 0 0 0 0 1,185 1,185 0 4,845,230 4,845,230 Longwall Mining—BC_Only 0 0 0 Total 0 2,370 2,370 0 7,044,990 7,044,990 0 0 0 Owned 0 0 0 0 0 0 0 0 0 Leased 0 2,370 2,370 0 7,044,990 7,044,990 0 0 0 Option 0 0 0 0 0 0 0 0 0 Total 0 2,370 2,370 0 7,044,990 7,044,990 0 0 0 -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 6 of 9

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total Block E3 Leased Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 1.43 0 4,099 4,099 0 10,541,490 10,541,490 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 2.95 0 4,099 4,099 0 21,477,260 21,477,260 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 2.45 0 8,197 8,197 0 32,018,750 32,018,750 0 0 0 Owned Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 0.85 0 30 30 0 45,414 45,414 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 2.53 0 30 30 0 133,411 133,411 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 2.10 0 59 59 0 178,824 178,824 0 0 0 Option Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 0.00 0 0 0 0 0 0 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 0.00 0 0 0 0 0 0 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 0.00 0 0 0 0 0 0 0 0 0 Adverse Continuous Mining ML 1,977 0.00% 0 0 0 Longwall Mining ML 1,977 0.00% 0.00 1.14 0 3,989 3,989 0 8,154,759 8,154,759 0 0 0 Continuous Mining BC 1,960 0.00% 0 0 0 0.00 2.86 0 3,989 3,989 0 20,273,961 20,273,961 Longwall Mining BC 1,960 0.00% 0 0 0 Total 0.00 2.37 0 7,977 7,977 0 28,428,719 28,428,719 0 0 0 Total Continuous Mining—ML_Only 0 0 0 0 4,128 4,128 0 10,586,903 10,586,903 Longwall Mining—ML_Only 0 0 0 Continuous Mining—BC_Only 0 0 0 0 4,128 4,128 0 21,610,671 21,610,671 Longwall Mining—BC_Only 0 0 0 Total 0 8,257 8,257 0 32,197,574 32,197,574 0 0 0 Owned 0 59 59 0 178,824 178,824 0 0 0 Leased 0 8,197 8,197 0 32,018,750 32,018,750 0 0 0 Option 0 0 0 0 0 0 0 0 0 Total 0 8,257 8,257 0 32,197,574 32,197,574 0 0 0 -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 7 of 9

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total Grand Total Inclusive of Reserves (Blocks A-E) Continuous Mining—ML_Only 1,702,431 1,051,924 2,754,355 Longwall Mining—ML_Only 6,796 4,491 11,287 19,039,581 13,486,158 32,525,739 9,724,850 6,832,126 16,556,976 Continuous Mining—BC_Only 4,601,971 2,324,380 6,926,352 Longwall Mining—BC_Only 6,796 4,491 11,287 50,488,946 28,417,479 78,906,425 26,769,815 15,172,610 41,942,425 Total 13,591 8,983 22,574 69,528,527 41,903,637 111,432,164 42,799,068 25,381,040 68,180,108 Owned 3,141 719 3,859 16,028,725 3,618,979 19,647,704 8,836,275 2,311,205 11,147,480 Leased 8,896 7,649 16,545 45,501,714 35,322,926 80,824,641 28,786,878 20,868,606 49,655,484 Option 1,554 615 2,170 7,998,088 2,961,732 10,959,820 5,175,914 2,201,230 7,377,144 Total 13,591 8,983 22,574 69,528,527 41,903,637 111,432,164 42,799,068 25,381,040 68,180,108 Adverse 4,507 8,046 12,553 21,682,039 34,337,406 56,019,445 15,477,253 20,166,599 35,643,852 Exclusive of Reserves (Blocks E1-E2) Continuous Mining—ML_Only Longwall Mining—ML_Only 0 5,313 5,313 0 12,786,664 12,786,664 Continuous Mining—BC_Only Longwall Mining—BC_Only 0 5,313 5,313 0 26,455,900 26,455,900 Total 0 10,626 10,626 0 39,242,564 39,242,564 Owned 0 59 59 0 178,824 178,824 Leased 0 10,567 10,567 0 39,063,740 39,063,740 Option 0 0 0 0 0 0 Total 0 10,626 10,626 0 39,242,564 39,242,564 Adverse 0 9,243 9,243 0 32,104,198 32,104,198 -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 8 of 9

Warrior Met Coal, LLC Blue Creek Area Underground Mineable Reserves as of December 31, 2022 Appendix A—Table 1 (Metric Tonnes) Moisture 10% Washed recoverable tons shown on 10.0% moisture basis Preparation Plant Efficiency 100% Included in Wash Recovery* Tons/ Wash Resource Thickness Resource Acres In Place Tonnes Clean, Moist, Demonstrated Tonnes Seam Acre-ft. Recovery* Measured Indicated Measured Indicated Total Measured Indicated Total Proven Probable Total Continuous Mining—ML_Only 1,702,431 1,051,924 2,754,355 Longwall Mining—ML_Only 6,796 9,805 16,600 19,039,581 26,272,821 45,312,403 9,724,850 6,832,126 16,556,976 Continuous Mining—BC_Only 4,601,971 2,324,380 6,926,352 Longwall Mining—BC_Only 6,796 9,805 16,600 50,488,946 54,873,380 105,362,326 26,769,815 15,172,610 41,942,425 Total 13,591 19,609 33,200 69,528,527 81,146,201 150,674,729 42,799,068 25,381,040 68,180,108 Owned 3,141 778 3,919 16,028,725 3,797,803 19,826,528 8,836,275 2,311,205 11,147,480 Leased 8,896 18,216 27,112 45,501,714 74,386,666 119,888,381 28,786,878 20,868,606 49,655,484 Option 1,554 615 2,170 7,998,088 2,961,732 10,959,820 5,175,914 2,201,230 7,377,144 Total 13,591 19,609 33,200 69,528,527 81,146,201 150,674,729 42,799,068 25,381,040 68,180,108 Adverse 4,507 17,289 21,796 21,682,039 66,441,603 88,123,642 15,477,253 20,166,599 35,643,852 *Average total seam thickness by mine Definitions: Total seam is the thickness of coal and non-coal partings from the top to the base of the seam, excluding the middleman. Wash recovery is estimated via a plant simulation utilizing multi-gravity data available to target a 10.2% ash product from exploration data and MM&A’s experience in the subject coal horizons. -02-02).xlsx • Metric Tonnes • 2/10/2023 Page 9 of 9

APPENDIX B MARKET MEMORANDUM PROVIDED BY WARRIOR MET

Appendix B Market Projections Provided by Warrior Met Key price expectations (nominal US dollars) Q1 2022 Price Description Basis average Q2 2022 Q3 2022 Q4 2022 2022 2023 2024 2025 2026 2027 2028 2029 2030 MCC1 Low vole PHCC FOB Australia 412 303 234 180 281 159 160 160 165 182 188 192 195 MCC1 Upside case 403 284 230 230 179 170 170 175 192 198 202 205 MCC1 Downside case 293 224 170 172 149 150 150 155 172 178 182 185 MCC2 Mid vole PHCC FOB Australia 416 306 238 184 285 153 154 154 159 176 182 186 189 MCC3 2nd tier HCC FOB Australia 368 270 209 161 251 139 140 140 145 162 168 172 175 MCC4 Low vole PHCC CFR China 375 326 254 194 287 174 175 175 180 197 203 207 210 MCC5 Mid vole PHCC CFR China 370 321 249 191 282 168 169 169 174 191 197 201 204 MCC6 2nd tier HCC CFR China 353 305 237 182 268 159 160 160 165 182 188 192 195 MCC7 US high vole B FOB USEC 340 273 220 165 249 134 135 135 140 157 163 167 170 MCC8 US high vole A FOB USEC 377 300 241 176 273 150 151 151 156 173 179 183 186 MCC9 US mid vole FOB USEC 370 298 236 177 270 151 152 152 157 174 180 184 187 MCC10 US low vole FOB USEC 362 297 231 174 278 153 154 154 159 176 182 186 189 Australian low-vole PCI FOB Australia 288 207 160 133 196 118 118 118 122 132 136 138 140 Australian SSCC FOB Australia 261 188 145 124 179 111 113 113 118 128 133 135 137 Coke RI Zhao FOB China 521 427 366 318 407 299 300 300 305 320 325 329 331 Note: This modeling is based on Chinese restrictions on Australian coal continuing through the end of 2022; an earlier or later end will meaningfully change our outlook, with higher CFR and lower FOB prices. PHCC = Prime hard coking coal, HCC = Hard coking coal; PCI = Pulverized coal injection; SSCC = Semi-soft coking coal; quarterly prices are quarter averages, including current quarter. Appendix B IHS Coking coal price forecast.xlsx