10-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 10-Q

(Mark One)

xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2012

oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE EXCHANGE ACT

For the transition period from                to               

Commission File Number: 001-33190

MCEWEN MINING INC.

(Exact name of registrant as specified in its charter)

Colorado	84-0796160
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)

Bay Wellington Tower, 181 Bay Street, Suite 4750, Toronto, Ontario Canada M5J 2T3

(Address of principal executive offices)  (Zip code)

(866) 441-0690

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the past 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes x  No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T(§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  Yes x  No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company.  See definition of “large accelerated filer”, “accelerated filer”, and “smaller reporting company” in Rule 12b-2 of the Exchange Act.  (Check one):

Large accelerated filer o	Accelerated filer x
Non-accelerated filer o	Smaller reporting company o
(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes o  No x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date: 190,757,047 shares outstanding as of November 2, 2012 (and 77,747,371 exchangeable shares).

MCEWEN MINING INC.

FORM 10-Q

Index

Part I     FINANCIAL INFORMATION
Item 1.	Financial Statements	3
	Consolidated Statements of Operations and Comprehensive Loss for the three and nine months ended September 30, 2012 and 2011 (unaudited)	3
	Consolidated Balance Sheets at September 30, 2012 (unaudited) and December 31, 2011	4
	Consolidated Statement of Changes in Shareholders’ Equity for the nine months ended September 30, 2012 and 2011 (unaudited)	5
	Consolidated Statements of Cash Flows for the nine months ended September 30, 2012 and 2011 (unaudited)	6
	Notes to Consolidated Financial Statements (unaudited)	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3.	Quantitative and Qualitative Disclosure about Market Risk	39
Item 4.	Controls and Procedures	41
Part II     OTHER INFORMATION
Item 1.	Legal Proceedings	41
Item 6.	Exhibits	44
SIGNATURES		45

2

MCEWEN MINING INC.

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED)

(in thousands, except per share)

	Three months ended September 30,						Nine months ended September 30,
	2012			2011			2012			2011
REVENUE
Income on investment in Minera Santa Cruz S.A., net of amortization - note 7	$	11,311		$	—		$	14,759		$	—
Gold and silver sales	456			—			456			—
	11,767			—			15,215			—
COSTS AND EXPENSES
Production costs applicable to sales	119			—			119			—
General and administrative	4,119			1,540			12,935			5,059
Acquisition costs	8			1,920			1,450			2,128
Property holding costs	2,147			2,362			4,127			3,470
Exploration costs	6,708			15,115			28,565			32,650
Mine construction costs	4,671			—			13,306			—
Mine operating costs	2,406			—			8,622			—
Accretion of asset retirement obligation	110			134			342			400
Depreciation	266			179			750			438
Gain on sale of property and equipment	(1,135		)	(11		)	(1,265		)	(21		)
Asset impairments	2,902			—			3,081			—
Total costs and expenses	22,321			21,239			72,032			44,124
Operating loss	(10,554		)	(21,239		)	(56,817		)	(44,124		)
OTHER INCOME (EXPENSE)
Interest income	16			19			198			50
Interest expense	—			46			—			29
Gain on sale of gold and silver bullion - note 4	1,233			1,143			3,075			1,667
Unrealized loss on silver bullion - note 4	—			(2,139		)	(359		)	(2,139		)
(Loss) gain on sale of marketable equity securities - note 3	(70		)	19			(70		)	19
Other-than-temporary impairment on marketable equity securities - note 3	—			—			(1,993		)	—
Foreign currency gain (loss)	423			(1,529		)	469			(1,070		)
Total other income (expense)	1,602			(2,441		)	1,320			(1,444		)
Loss before income taxes	(8,952		)	(23,680		)	(55,497		)	(45,568		)
Recovery of income taxes - note 2	6,369			—			14,919			—
Net loss	(2,583		)	(23,680		)	(40,578		)	(45,568		)
OTHER COMPREHENSIVE LOSS
Reclassification of unrealized gain on marketable equity securities disposed of during the period, net of taxes	—			—			1,000			—
Unrealized (loss) gain on marketable equity securities, net of taxes	(1		)	89			(2		)	(777		)
Comprehensive loss	$	(2,584	)	$	(23,591	)	$	(39,580	)	$	(46,345	)
Basic and diluted per share data:
Net loss - basic and diluted	$	(0.01	)	$	(0.17	)	$	(0.16	)	$	(0.33	)
Weighted average common shares outstanding: - basic and diluted	268,373			139,725			256,834			136,134

The accompanying notes are an integral part of these consolidated financial statements.

3

MCEWEN MINING INC.

CONSOLIDATED BALANCE SHEETS

(in thousands)

	September 30,			December 31,
	2012			2011
	(unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	18,520		$	13,416
Short-term investments	—			3,933
Marketable equity securities - note 3	6			1,480
Gold and silver bullion (market value - 2012 - $2,273; 2011 - $24,483) - note 4	1,690			22,810
IVA taxes receivable	8,139			2,983
Inventories - note 5	2,783			139
Prepaid and other current assets	4,882			3,122
Total current assets	36,020			47,883
Mineral property interests - note 6	785,278			245,454
Restrictive time deposits for reclamation bonding - note 6	5,190			5,190
Investment in Minera Santa Cruz S.A. - note 7	271,180			—
Property and equipment, net - note 8	13,483			11,772
Other assets	54			56
TOTAL ASSETS	$	1,111,205		$	310,355
LIABILITIES & SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable and accrued liabilities	$	7,181		$	5,612
Current portion of asset retirement obligation - note 6	323			512
Total current liabilities	7,504			6,124
Asset retirement obligation, less current portion - note 6	6,169			5,741
Deferred income tax liability - note 2	242,761			78,786
Other liabilities	400			400
Total liabilities	$	256,834		$	91,051
Shareholders’ equity:
Common stock, no par value, 500,000 shares authorized;
Common: 189,610 shares as of September 30, 2012 and 136,572 shares as of December 31, 2011 issued and outstanding
Exchangeable: (2012) 78,886 shares as of September 30, 2012 and nil shares as of December 31, 2011 issued and outstanding
Exchangeable: (2007) nil shares as of September 30, 2012 and 3,181 shares as of December 31, 2011 issued and outstanding	1,288,478			613,831
Accumulated deficit	(433,816		)	(393,238		)
Accumulated other comprehensive loss	(291		)	(1,289		)
Total shareholders’ equity	854,371			219,304
TOTAL LIABILITIES & SHAREHOLDERS’ EQUITY	$	1,111,205		$	310,355

The accompanying notes are an integral part of these consolidated financial statements.

4

MCEWEN MINING INC.

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY (UNAUDITED)

(in thousands)

	Common Stock			Accumulated Other Comprehensive			Accumulated
	Shares	Amount		Loss			Deficit			Total
Balance, December 31, 2010	122,186	$	504,389	$	257		$	(331,366	)	$	173,280
Stock-based compensation	—	1,905		—			—			1,905
Sale of shares for cash, net of issuance costs	17,250	105,415		—			—			105,415
Exercise of stock options	163	412		—			—			412
Exercise of stock options from 2007 acquisition	70	361		—			—			361
Shares issued for Mexico mining concessions	84	582		—			—			582
Unrealized loss on marketable equity securities	—	—		(777		)	—			(777		)
Net loss	—	—		—			(45,568		)	(45,568		)
Balance, September 30, 2011	139,753	$	613,064	$	(520	)	$	(376,934	)	$	235,610
Balance, December 31, 2011	139,753	$	613,831	$	(1,289	)	$	(393,238	)	$	219,304
Stock-based compensation	—	2,845		—			—			2,845
Issuance of exchangeable shares to acquire Minera Andes Inc.	127,331	664,671		—			—			664,671
Assumption of stock options in connection with the acquisition of Minera Andes Inc.	—	3,175		—			—			3,175
Exercise of stock options	387	721		—			—			721
Exercise of stock options from Minera Andes Inc.	942	2,844		—			—			2,844
Shares issued for Mexico mining concessions	83	391		—			—			391
Unrealized loss on marketable equity securities	—	—		(2		)	—			(2		)
Reclassification of unrealized loss on marketable equity securities disposed of during the period, net of tax	—	—		(993		)	—			(993		)
Other-than-temporary impairment on marketable equity securities	—	—		1,993			—			1,993
Net loss	—	—		—			(40,578		)	(40,578		)
Balance, September 30, 2012	268,496	$	1,288,478	$	(291	)	$	(433,816	)	$	854,371

The accompanying notes are an integral part of these consolidated financial statements

5

MCEWEN MINING INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

(in thousands)

	For Nine Months Ended September 30,
	2012			2011
Cash flows (used in) from operating activities:
Cash paid to suppliers and employees	$	(65,760	)	$	(40,243	)
Dividend received from Minera Santa Cruz S.A.	2,154			—
Interest received	125			50
Cash used in operating activities	(63,481		)	(40,193		)
Cash flows (used in) provided by investing activities:
Cash and short-term investments received from acquisition of Minera Andes Inc.	36,337			—
Short-term investments (net)	3,933			—
Acquisition of mineral property interests	(712		)	(9,828		)
Additions to property and equipment	(1,769		)	(7,777		)
Proceeds from disposal of property and equipment	3,143			36
Investment in gold and silver bullion	—			(31,300		)
Proceeds from sale of gold and silver bullion	23,836			8,784
Investment in marketable equity securities	—			(284		)
Proceeds from sale of marketable equity securities	409			1,854
Increase in restricted investments securing reclamation	—			(413		)
Cash provided by (used in) investing activities	65,177			(38,928		)
Cash flows from financing activities:
Sale of common stock for cash, net of issuance costs	—			105,415
Exercise of stock options	3,564			773
Cash provided by financing activities	3,564			106,188
Effect of exchange rate change on cash and cash equivalents	(156		)	(1,078		)
Increase in cash and cash equivalents	5,104			25,989
Cash and cash equivalents, beginning of period	13,416			6,818
Cash and cash equivalents, end of period	$	18,520		$	32,807
Reconciliation of net loss to cash used in operating activities:
Net loss	$	(40,578	)	$	(45,568	)
Adjustments to reconcile net loss from operating activities:
Income on investment in Minera Santa Cruz S.A. (net of amortization)	(14,759		)	—
Deferred income taxes	(14,919		)	—
Gain on sale of gold and silver bullion	(3,075		)	(1,667		)
Unrealized loss on silver bullion	359			2,139
Other-than-temporary impairment on marketable equity securities	1,993			—
Loss (gain) on sale of marketable equity securities	70			(19		)
Gain on sale of property and equipment	(1,265		)	(21		)
Asset impairments	3,081			—
Stock-based compensation	2,845			1,905
Accretion of asset retirement obligation	342			400
Depreciation	750			438
Foreign exchange loss	156			1,078
Change in non-cash working capital items:
Increase in other assets related to operations	(6,680		)	(1,720		)
Dividend receivable obtained from acquisition of Minera Andes Inc.	9,363			—
Dividend receivable from Minera Santa Cruz S.A.	2,611			—
(Decrease) increase in liabilities related to operations	(3,775		)	2,842
Cash used in operating activities	$	(63,481	)	$	(40,193	)

The accompanying notes are an integral part of these consolidated financial statements

6

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2012

NOTE 1  NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations and Basis of Presentation

McEwen Mining Inc. (the “Company” or “McEwen Mining”) was organized under the laws of the State of Colorado on July 24, 1979.  Since inception, the Company has been engaged in the exploration for, development of, production and sale of gold and silver. On January 24, 2012, the Company changed its name from US Gold Corporation to McEwen Mining Inc. after the completion of the acquisition, by way of a statutory plan of arrangement under the laws of the Province of Alberta, Canada, of Minera Andes Inc. (“Minera Andes”).

As a result of the acquisition of Minera Andes, the Company acquired a 49% interest in Minera Santa Cruz S.A. (“MSC”), owner of the producing San José Silver-Gold Mine in Santa Cruz, Argentina; a 100% interest in the Los Azules Copper Deposit in San Juan, Argentina, and a large portfolio of exploration properties in Santa Cruz, Argentina.  The San José Mine is operated by the majority owner of the joint venture, Hochschild Mining plc (‘‘Hochschild’’).

The Company recently began production at Phase 1 of the El Gallo Complex in Mexico, with a total of 298 oz of gold produced during September 2012.

The interim consolidated financial statements included herein have been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”).  Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) has been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures included are adequate to make the information presented not misleading.

In management’s opinion, the unaudited consolidated statements of operations and comprehensive loss for the three and nine months ended September 30, 2012 and 2011, the consolidated balance sheets as at September 30, 2012 (unaudited) and December 31, 2011, the unaudited consolidated statement of changes in shareholders’ equity for the nine months ended September 30, 2012 and 2011, and the unaudited consolidated statements of cash flows for the nine months ended September 30, 2012 and 2011, contained herein, reflect all adjustments, consisting solely of normal recurring items, which are necessary for the fair presentation of the Company’s financial position, results of operations and cash flows on a basis consistent with that of the Company’s prior audited consolidated financial statements.  However, the results of operations for the interim periods may not be indicative of results to be expected for the full fiscal year.  Therefore these financial statements should be read in conjunction with the audited financial statements and notes thereto and summary of significant accounting policies included in the Company’s Form 10-K for the year ended December 31, 2011.  Except as noted below, there have been no material changes in the footnotes from those accompanying the audited consolidated financial statements contained in the Company’s Form 10-K.

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries.  All inter-company accounts and transactions have been eliminated.

Significant Accounting Policies

Business Combinations— The Company accounts for business combinations using the acquisition method of accounting pursuant to Accounting Standards Codification (“ASC”) Topic 805 — Business Combinations.  The acquisition method requires the Company to determine the fair value of all acquired assets, including identifiable intangible assets, and all assumed liabilities.  The total cost of acquisitions is allocated to the underlying identifiable net assets, based on their respective estimated fair values.  Determining the fair value of assets acquired and liabilities assumed requires management’s judgment, and the utilization of independent valuation experts, and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, and asset lives, among other items.  Transaction costs are expensed as incurred and are reported on the acquisition costs line within the consolidated statements of operations and comprehensive loss.

7

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 1  NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

Investments — Equity Method and Joint Ventures - The Company accounts for investments over which the Company exerts significant influence using the equity method of accounting pursuant to ASC Topic 323 — Investments, Equity Method and Joint Ventures.  Under this method, the Company’s share of earnings and losses is included in the consolidated statement of operations and comprehensive loss and the balance of the investment is adjusted by a like amount.  Under the equity method, dividends received from an investee are recorded as decreases in the investment account, not as income.  Where there has been a loss in value that is other than a temporary decline, the carrying value is reduced to its fair value.

IVA taxes receivable — In Mexico and Argentina, value added taxes (IVA) are assessed on purchases of materials and services and sales of products.  Businesses are generally entitled to recover the taxes they have paid related to purchases of materials and services, either as a refund or as a credit against future taxes payable.  In Argentina, except at the San José Mine, the Company expenses all IVA as their recoverability is uncertain.

Stockpiles, Ore on Leach Pads, In-process Inventory, Precious Metals Inventory and Materials and Supplies — Stockpiles, ore on leach pads, and in-process inventory are carried at the lower of average cost or net realizable value, if commercial production is achieved. For accounting purposes, the Company has achieved commercial production during the third quarter of 2012 after its initial gold pour in late September.  Net realizable value represents the estimated future sales price of the product based on current and long-term metals prices, less the estimated costs to complete production and bring the product to sale. Write-downs of stockpiles, ore on leach pads, in-process inventory, precious metals inventory and materials and supplies, resulting from net realizable value impairments, are reported as a component of production costs applicable to sales. The current portion of stockpiles, ore on leach pad, in-process inventory and materials and supplies is determined based on the expected amounts to be processed within the next 12 months. Stockpiles, ore on leach pads, in-process inventory and materials and supplies not expected to be processed within the next 12 months, if any, are classified as long-term.

Stockpiles represent ore that have been extracted from the mine and is available for further processing. Stockpiles are measured by estimating the number of tonnes added and removed from the stockpile, an estimate of the contained metals (based on assay data) and the estimated metallurgical recovery rates. Costs are allocated to stockpiles based on relative values of material stockpiled and processed using current mining costs incurred up to the point of stockpiling the ore. Material is removed from the stockpile at an average cost per tonne.  Since the Company only achieved commercial production for accounting purposes in September 2012, no value was allocated to stockpiles prior to the month of September 2012.

Ore on leach pads is the ore that is placed on pads where it is treated with a chemical solution that dissolves the gold contained in the ore over a period of months.  Costs are attributed to the leach pads based on current mining costs incurred up to the point of placing the ore on the pad.  Costs are removed from the leach pad based on the average cost per estimated recoverable ounce of gold on the leach pad as the gold is recovered.  The estimates of recoverable gold on the leach pads are calculated from the quantities of ore placed on the leach pads, the grade of ore placed on the leach pads and a recovery percentage.  The quantities of recoverable gold placed on the leach pads are reconciled to the quantities of gold actually recovered (metallurgical balancing), by comparing the grades of ore placed on the leach pads to actual ounces recovered.  The nature of the leaching process inherently limits the ability to precisely monitor inventory levels.  As a result, the metallurgical balancing process is constantly monitored and the engineering estimates are refined based on actual results over time.

8

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 1  NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

In-process inventories represent materials that are currently in the process of being converted to a saleable product.  The El Gallo Phase 1 conversion process is an Adsorption-Desorption-Recovery (“ADR”) processing plant utilizing carbon columns for recovery.  In-process material is measured based on assays of the material fed into the process and the projected recoveries of the respective plants.  In-process inventories are valued at the average cost of the material fed into the process attributable to the source material coming from the mines, stockpiles and/or leach pads plus the in-process conversion costs incurred to that point in the process.

Precious metal inventory include gold bullion that is unsold and held at the refinery and is valued at the lower of average mining cost or net realizable value.

Materials and supplies inventories are comprised of chemicals, reagents and consumable parts used in drilling and other operating activities.  They are valued at the lower of average cost or net realizable value.  Cost includes applicable taxes and freight.

Revenue Recognition — Revenue includes sales value received for the Company’s principal products, gold and silver. Revenue is recognized, net of refining charges and royalties, when title to gold and silver passes to the buyer and when collectability is reasonably assured. Title passes to the buyer based on terms of the sales contract. Revenues from by-product sales are credited to production cost applicable to sales.  Product pricing is determined at the point revenue is recognized by reference to active and freely traded commodity markets, for example, the London Bullion Market for both gold and silver, in an identical form to the product sold.

The Company entered into a doré sales agreement, whereby the Company has the option to sell approximately 90% of the gold and silver contained in doré bars produced at the El Gallo Complex prior to the completion of refining, which normally takes 15 business days.

The Company has a net smelter return (“NSR”) royalty agreement with a third party on all Phase 1 metals production and a portion of future Phase 2 metals production from the El Gallo Complex.  The terms of the royalty agreement stipulate that production up to 30,000 of gold and gold equivalent ounces are subject to a 1% NSR, production between 30,001 to 380,000 of gold and gold equivalent ounces are subject to a 3.5% NSR, and 1% thereafter.  Currently the Company is subject to the 3.5% NSR.  Under the terms of the royalty agreement, the royalty holder has the option to settle the NSR payment in cash or gold and gold equivalent ounces.  The royalty holder has indicated a preference to settle the NSR payment in gold and gold equivalent ounces which would be calculated on the day the refiner credits the Company’s metals account.

Proven and Probable Reserves—The definition of proven and probable reserves is set forth in the SEC Industry Guide 7 (“Guide 7”). Proven reserves are reserves for which (a) quantity is computed from dimensions revealed in outcrops, trenches, workings or drill holes, grade and/or quality are computed from the results of detailed sampling and (b) the sites for inspection, sampling and measurement are spaced so closely and the geological character is so well defined that size, shape, depth and mineral content of the reserves are well-established. Probable reserves are reserves for which quantity and grade and/or quality are computed from information similar to that used for proven (measured) reserves, but the sites for inspection, sampling, and measurement are farther apart or are otherwise less adequately spaced. The degree of assurance, although lower than that for proven (measured) reserves, is high enough to assume continuity between points of observations.

As of September 30, 2012, except for the Company’s 49% interest in the San José Mine, none of the Company’s other mineralized properties contain resources that satisfy the definition of proven and probable reserves.

9

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 1  NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

Design, Construction, and Development Costs—Certain costs to design and construct mining and processing facilities may be incurred prior to establishing proven and probable reserves.  Prior to commercial production for accounting purposes in September 2012, the Company classified the Phase 1 development of the El Gallo Complex as an exploration stage project since no Guide 7 proven or probable reserves have been established, and accordingly, substantially all costs, including design, engineering, construction, and installation of equipment were expensed as incurred.

Certain types of equipment, which have alternative uses or significant salvage value, may be capitalized without proven and probable reserves.  If a project commences commercial production, amortization and depletion of capitalized costs for such equipment would be computed on a unit-of—production basis over the expected reserves of the project based on estimated recoverable ounces.

Mine development costs include engineering and metallurgical studies, drilling and other related costs to delineate an ore body, the removal of overburden to initially expose an ore body at open pit surface mines and the building of access ways, shafts, lateral access, drifts, ramps and other infrastructure at underground mines.  Development costs are capitalized when proven and probable reserves exist and the property is a commercially minable property.  Mine development costs incurred either to develop new ore deposits, expand the capacity of operating mines, or to develop mine areas substantially in advance of current production are capitalized.  Costs of start-up activities and costs incurred to maintain current production or to maintain assets on a standby basis are charged to operations as incurred.  Costs of abandoned projects are charged to operations upon abandonment.  All capitalized costs are amortized using the units of production method over the estimated life of the ore body based on recoverable ounces to be mined from proven and probable reserves.

As of September 30, 2012, except for the Company’s 49% interest in the San José Mine, development costs are not capitalized at any of the Company’s properties, as no proven and probable reserves exist.

Property and Equipment — Expenditures for new facilities or equipment and expenditures that extend the useful lives of existing facilities or equipment are capitalized and recorded at cost.  Depreciation is computed using straight-line methods. Office furniture, equipment and light vehicles are being depreciated over the estimated economic lives ranging from 3 to 5 years.  Trailers, heavy vehicles and other site equipment are being depreciated over estimated economic lives from 5 to 15 years. Buildings are being depreciated over an estimated economic life of 20 years.  All mining equipment is depreciated using the units-of-production method based upon estimated proven and probable reserves.

Impairment of Long-Lived Assets—The Company reviews and evaluates its long-lived assets for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable.  Recoverability is measured by comparing the net book value to fair value. When the net book value exceeds fair value, an impairment loss is measured and recorded.  Mineral properties are monitored for impairment based on factors such as the Company’s continued right to explore the area, exploration reports, assays, technical reports, drill results and its continued plans to fund exploration programs on the property.  The Company uses the market approach to estimate the fair value of the properties by using a combination of the observed market value per square mile in the region and an observed market value per ounce of mineralized material.  The Company is unable to estimate undiscounted future net cash flows from its operations due to the absence of proven and probable reserves.  As such, the appropriate evidence to perform estimates of future cash flows is not available and may not be accurate in supporting the Company’s long-lived assets.  For purposes of recognition and measurement of an impairment loss, the Company groups its properties by geological mineral complex, as this represents the lowest level at which the Company allocates its exploration spending independent of other assets and liabilities.  For the recently acquired Santa Cruz exploration properties, the Company has separated its properties into two regions, due to their physical separation, for the purposes of impairment testing. The two regions are Cerro Negro and Other Santa Cruz exploration properties.

10

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 1  NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

Recently Adopted Accounting Pronouncements

Comprehensive Income — In June 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income.  Under the updated guidance, an entity has the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements.  The update does not change the items reported in other comprehensive income or when an item of other comprehensive income must be reclassified to income.  The update is effective for the Company’s fiscal year beginning January 1, 2012.  The adoption had no impact on the Company’s consolidated financial position, results of operations or cash flows.

Fair Value Measurement —In May 2011, the FASB issued Accounting Standards Update No. 2011-04, Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs.  The updated guidance clarifies different components of fair value accounting including the application of the highest and best use and valuation premise concepts, measuring the fair value of an instrument classified in a reporting entity’s shareholders’ equity and disclosing quantitative information about the unobservable inputs used in a fair value measurement that is categorized in Level 3 of the fair value hierarchy.  The update is effective for the Company’s fiscal year beginning January 1, 2012.  The adoption had no impact on the Company’s consolidated financial position, results of operations or cash flows.

NOTE 2   BUSINESS ACQUISITION

On January 24, 2012, the Company completed the acquisition of Minera Andes (“the Arrangement”) through a court-approved plan of arrangement under Alberta, Canada law, under which Minera Andes, a Canadian company, became an indirect wholly-owned subsidiary of the Company.

The Company’s management and Board of Directors believes that the combination with Minera Andes is in the best interests of the Company and its shareholders because the combined company is expected to have a stronger combined cash position and balance sheet, sources of revenue, active mining operations, enhanced trading liquidity, a significant growth profile, industry leading costs, an expanded exploration program and additional technical expertise.

On the closing date of the Arrangement, holders of Minera Andes’ common stock received a number of exchangeable shares of McEwen Mining - Minera Andes Acquisition Corporation (“2012-Exchangeable Shares”), an indirect wholly-owned Canadian subsidiary of the Company, equal to the number of Minera Andes shares, multiplied by the exchange ratio of 0.45.  In the aggregate, former Minera Andes shareholders received 127,331,498 2012-Exchangeable Shares.  After closing of the Arrangement, the name of the Company was changed to McEwen Mining Inc.  The Company’s common stock began trading on the NYSE and TSX under the symbol “MUX” and the 2012-Exchangeable Shares began trading on the TSX under the symbol “MAQ” on January 27, 2012.

As a result of the Arrangement and on the date of closing, the combined company was held approximately 52% by then-existing McEwen Mining shareholders and 48% by former Minera Andes shareholders. On a diluted basis, the combined company was held approximately 53% by then existing McEwen Mining shareholders and 47% by former Minera Andes shareholders.

In June 2011, Robert R. McEwen, the Company’s Chairman, President, Chief Executive Officer and largest shareholder and then also the Chairman, President, Chief Executive Officer and largest shareholder of Minera Andes, proposed the Arrangement.  In connection with the Arrangement, Mr. McEwen received approximately 38.7 million 2012 Exchangeable Shares.  Mr. McEwen owns approximately 25.1% of the shares of the Company.

11

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 2   BUSINESS ACQUISITION (Continued)

The 2012-Exchangeable Shares are exchangeable for the Company’s common stock on a one-for-one basis.  Option holders of Minera Andes received replacement options entitling them to receive, upon exercise, shares of the Company’s common stock, reflecting the exchange ratio of 0.45 with the appropriate adjustment of the exercise price per share.  The option life and vesting period of the replacement options has not changed from the option life granted under the Minera Andes option plan.

The estimated fair value of the vested portion of the replacement options of $3.2 million have been included as part of the purchase price consideration at their fair values based on the Black-Scholes pricing model as illustrated below.

The principal assumptions used in applying the Black-Scholes option pricing model were as follows:

	January 24, 2012
Risk-free interest rate	0.02% to 0.39%
Dividend yield	n/a
Volatility factor of the expected market price of common stock	46% to 77%
Weighted-average expected life of option	1.4 years

The acquisition has been accounted for using the acquisition method in accordance with ASC Topic 805, Business Combinations, with the Company being identified as the acquirer.  The measurement of the purchase consideration was based on the market price of the Company’s common stock on January 24, 2012, which was $5.22 per share.  The total purchase price, including the fair value of the options, amounted to $667.8 million.  The total transaction costs incurred through September 30, 2012 by the Company was $5.3 million, of which $3.9 million was reported in the year ended December 31, 2011 in general and administrative expenses, and $1.4 million for the nine months ended September 30, 2012 in acquisition costs in the consolidated statements of operations and comprehensive loss.

The allocation of the purchase price on a preliminary basis, based on the estimated fair value of assets acquired and liabilities assumed on January 24, 2012, is summarized in the following table (in thousands).

	Fair Value
Purchase price:
Exchangeable shares of McEwen Mining - Minera Andes Acquisition	$	664,671
Stock options to be exchanged for options of McEwen Mining	3,175
	$	667,846
Net assets acquired:
Cash and cash equivalents	$	31,385
Short-term investments	4,952
Other current assets	9,828
Inventories	1,362
Mineral property interests	541,702
Investment in Minera Santa Cruz S.A.	261,186
Equipment	1,647
Accounts payable	(5,323		)
Deferred income tax liability	(178,893		)
	$	667,846

12

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 2   BUSINESS ACQUISITION (Continued)

The purchase consideration for the mineral property interests exceeded the carrying value of the underlying assets for tax purposes by approximately $511.1 million.  This amount has been applied to increase the carrying value of mineral property interests for accounting purposes.  However, this did not increase the carrying value of the underlying assets for tax purposes and resulted in a temporary difference between accounting and tax value.  The resulting estimated deferred income tax liability originally associated with this temporary difference was approximately $178.9 million, which is included in the preliminary allocation of purchase price above.  For the three and nine months ended September 30, 2012, the Company recorded a deferred income tax recovery of $5.4 million and $13.7 million, respectively, as a result of fluctuations in the foreign exchange rates between the Argentine pesos and U.S. dollar from January 24, 2012 to September 30, 2012.  These amounts are included in Recovery of income taxes on the Consolidated Statement of Operations and Comprehensive Loss for the respective periods.  As a result of the fluctuations in the foreign exchange rates during the two periods, the deferred income tax liability on these assets was reduced to $165.2 million, which is included in the deferred income tax liability balance of $242.8 million on the consolidated balance sheet as at September 30, 2012.

For the purposes of the Company’s financial statements, the purchase consideration has been allocated to the fair value of assets acquired and liabilities assumed, based on an independent valuation report and management’s best estimates and taking into account all available information at the time these consolidated financial statements were prepared.  The allocation is still preliminary and is subject to change.

Unaudited Pro Forma Results

ASC Topic 805 requires supplemental information on a pro forma basis to disclose the results of operations for the interim period as though the business combination had been completed as of the beginning of the periods being reported.

The following table sets forth on a pro forma basis, the results of operations for McEwen Mining, had the acquisition of Minera Andes been completed on January 1, 2012 and 2011 (in thousands):

Nine months ended September 30, 2012	McEwen Mining			Minera Andes (a)		Combined
Revenue	$	15,215		$	4,979	$	20,194
Net (loss) income for the period	(40,578		)	3,498		(37,080		)

Nine months ended September 30, 2011	McEwen Mining			Minera Andes		Combined
Revenue	$	—		$	35,830	$	35,830
Net (loss) income for the period	(45,568		)	23,406		(22,162		)

(a)Nine months ended September 30, 2012 represents the results of Minera Andes’ operations from January 1, 2012 through January 24, 2012, closing date of the acquisition. Beginning January 25, 2012, the results of Minera Andes’ operations are included in McEwen Mining’s consolidated financial statements.

13

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 3   MARKETABLE EQUITY SECURITIES

These securities are valued at fair value.  Any resulting gain or loss is recorded to an unrealized gain and loss account (accumulated other comprehensive loss) that is reported as a separate line item in the shareholders’ equity section of the balance sheet.  The gains and losses on available-for-sale securities are not reported on the statement of operations until the securities are sold or are other-than-temporarily impaired.  During the second quarter of 2012, the Company did not intend to hold these securities for a period of time sufficient to allow for any anticipated recovery in fair value and consequently, the Company deemed most of its securities to be other-than-temporarily impaired and recorded an impairment of $2.0 million in the statement of operations and comprehensive loss for the period.    These securities were sold during the third quarter of 2012.

Changes in the Company’s holdings of marketable securities for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended September 30,			Year Ended December 31,
	2012			2011
Opening Balance	$	1,480		$	4,576
Purchases	—			284
Proceeds from sale	(409		)	(1,853		)
Gain on sale	—			19
Unrealized loss	(2		)	(1,546		)
Realized loss	(1,063		)	—
Ending Balance	$	6		$	1,480

NOTE 4   GOLD AND SILVER BULLION

The Company invested a portion of its cash in physical gold and silver bullion.  Below is the balance of its holdings of gold and silver as at September 30, 2012 and December 31, 2011.

	September 30, 2012				December 31, 2011
	Gold		Silver		Gold		Silver
	(dollars in thousands, except ounces and per ounce)
# of ounces	793		24,969		5,656		552,812
Average cost per ounce	$	1,278.63	$	27.08	$	1,278.63	$	28.18
Total cost	$	1,014	$	676	$	7,232	$	15,578
Fair value per ounce	$	1,776.00	$	34.65	$	1,574.50	$	28.18
Total fair value	$	1,408	$	865	$	8,905	$	15,578

The fair value of gold and silver was based on the daily London P.M. fix as at September 30, 2012 and December 31, 2011.  Since ASC Topic 815 does not consider gold and silver to be readily convertible to cash, the Company carries these assets at the lower of cost or market.

14

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 4   GOLD AND SILVER BULLION (Continued)

During the first nine months of 2012, the Company sold 4,863 ounces of gold and 527,843 ounces of silver with a cost of $6.2 million and $14.5 million, respectively.  Changes in the Company’s holdings of gold and silver for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended September 30, 2012									Year Ended December 31, 2011
	Gold			Silver			Total			Gold			Silver			Total
Opening Balance	$	7,232		$	15,578		$	22,810		$	4,569		$	—		$	4,569
Purchases	—			—			—			7,387			23,912			31,299
Proceeds from sale	(7,982		)	(15,854		)	(23,836		)	(6,218		)	(5,521		)	(11,739		)
Gain on sale	1,764			1,311			3,075			1,494			581			2,075
Unrealized loss	—			(359		)	(359		)	—			(3,394		)	(3,394		)
Ending Balance	$	1,014		$	676		$	1,690		$	7,232		$	15,578		$	22,810

NOTE 5   INVENTORIES

Inventories at September 30, 2012 and December 31, 2011 consist of the following:

	September 30, 2012		December 31, 2011
Ore on leach pads	$	593	—
In-process inventory	1,050		—
Precious metals	31		—
Materials and supplies	1,109		139
Inventories	$	2,783	$	139

NOTE 6   MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS

At September 30, 2012, the Company holds mineral interests in Nevada, mineral rights in Argentina and mineral concession rights in Mexico, including the El Gallo complex.  The Magistral Mine is a former producing gold mine located within the El Gallo complex which has been held on a care and maintenance basis since 2005.  In August 2011, the Company announced that it would put this mine back into production as Phase 1 of mining operations at the El Gallo complex, and the Company had its first gold pour during September 2012.  The first gold pour produced 298 oz of gold and 129 oz of silver.  For accounting purposes, the Company has achieved commercial production in September 2012.

During the third quarter of 2012, the Company rationalized its mineral property interests in Nevada in order to focus its exploration program on more prospective areas.  As a result, the Company allowed certain claims from three of its Nevada properties in the Other United States Properties, Big Antelope Springs, Kent Springs and Buffalo Canyon, to lapse.  These mineral property interests in question were acquired in 2007 and had a carrying value of $2.9 million, which was written off during the third quarter, along with a resulting reduction in deferred tax liability and recovery of future income taxes of $1.0 million.  This resulted in a net write-off for the Company of $1.9 million which is included in the net loss for the nine months period ended September 30, 2012.

The Company increased its mineral property interests by $539.8 million, of which $541.7 million was due to the acquisition of Minera Andes as discussed in Note 2 above, to $785.3 million as at September 30, 2012 from $245.5 million at the end of 2011.  The values for the mineral properties from Argentina noted below are on a preliminary basis.

15

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 6   MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS (Continued)

The following table summarizes all of the Company’s mineral property interests in Nevada, Argentina and Mexico (in thousands):

Name of Property/Complex	State/Province	Country	Carrying Value
Tonkin Complex	Nevada	United States	$	52,204
Gold Bar Complex	Nevada	United States	$	77,012
Limo Complex	Nevada	United States	$	50,098
Battle Mountain Complex	Nevada	United States	$	31,106
Other United States Properties	Nevada	United States	$	19,107
Los Azules Copper Project	San Juan	Argentina	$	431,190
Other Argentina Exploration Properties	San Juan	Argentina	$	7,819
Cerro Negro Region	Santa Cruz	Argentina	$	80,889
Other Argentina Exploration Properties	Santa Cruz	Argentina	$	19,194
Other Argentina Exploration Properties	Catamarca	Argentina	$	2,362
Other Argentina Exploration Properties	Chubut	Argentina	$	248
El Gallo Complex	Sinaloa	Mexico	$	9,469
Other Mexico Exploration Properties	Sinaloa	Mexico	$	4,580
Total			$	785,278

The Company is responsible for reclamation of certain past and future disturbances at its properties.  The two most significant properties subject to these obligations are the historic Tonkin property in Nevada and the Magistral mine portion of the El Gallo Complex in Mexico.  The current undiscounted estimate of the reclamation costs for existing disturbances on the Tonkin property to the degree required by the U.S. Bureau of Land Management (“BLM”) and the Nevada Department of Environmental Protection (“NDEP”) is $3.0 million.  The Company submitted a mine closure plan to the NDEP and BLM for the Tonkin property during the fourth quarter of 2010.  Based on the Company’s estimate, the change in its bonding requirements was insignificant.

As at September 30, 2012, the closure plan has already been approved by the NDEP but is still currently under review by the BLM.  It is possible that reclamation plan cost estimates and bonding requirements may increase as a result of its review.  The Company, however, is unable to meaningfully estimate possible increases at this time. The costs of undiscounted projected reclamation of El Gallo Phase 1 are currently estimated at $4.6 million.

For mineral properties in the United States, the Company maintains required reclamation bonding with various governmental agencies, and at September 30, 2012 and December 31, 2011, had cash bonding in place of $5.2 million.  Under Mexican regulations, surety bonding of projected reclamation costs is not required.

16

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 6   MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS (Continued)

Changes in the Company’s asset retirement obligations for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended			Year Ended
	September 30,			December 31,
	2012			2011
Asset retirement obligation liability- opening balance	$	6,253		$	6,153
Settlements	(24		)	(82		)
Accretion of liability	342			524
Adjustment reflecting updated estimates	(79		)	(342		)
Asset retirement obligation liability - ending balance	$	6,492		$	6,253

It is anticipated that the capitalized asset retirement costs will be charged to expense based on the units of production method commencing with gold and silver production at the Company’s properties, if any.  There was no amortization adjustment recorded during the three and nine months ended September 30, 2012 or the year ended December 31, 2011 related to the capitalized asset retirement cost since the properties were not in operation.  Reclamation expenditures are expected to be incurred between 2012 and 2040.  As at September 30, 2012, the current portion of the asset retirement obligation was $0.3 million (December 31, 2011 — $0.5 million).

NOTE 7   INVESTMENT IN MINERA SANTA CRUZ S.A. (“MSC”) — SAN JOSÉ MINE

As discussed above in Note 1, the Company acquired a 49% interest in MSC, owner and operator of the San José Silver-Gold Mine in Santa Cruz, Argentina.  The Company’s share of earnings and losses from its investment in MSC is included in the consolidated statement of operations and comprehensive loss and includes 49% of MSC’s net income of $12.9 million and $18.5 million for the three months ended and period ended September 30, 2012, respectively.  Since the acquisition closed on January 24, 2012, MSC reported to the Company only its net income from January 25, 2012 to September 30, 2012.

Based on the preliminary purchase price allocation, the investment in MSC was originally attributed with an estimated fair value of $225.0 million during the first and second quarter of 2012.  During the third quarter of 2012, the preliminary purchase price allocation was adjusted and increased the estimated fair value of the investment in MSC to $261.2 million.  The adjustment affected the composition of the fair value allocation to MSC’s assets, resulting in a reduction in amortization reported for the first and second quarter of 2012.  Below is a reconciliation of the adjustment for the first and second quarter of 2012.

	For three months ended			For three months ended			For the six months ended
	March 31, 2012			June 30, 2012			June 30, 2012
	(in thousands)
Amortization of fair value increments, as reported	$	2,804		$	1,803		$	4,607
Adjustment	(1,914		)	(544		)	(2,458		)
Amortization of fair value increments, as adjusted	$	890		$	1,259		$	2,149
Net loss, as reported	$	(19,202	)	$	(21,251	)	$	(40,453	)
Adjustment	1,914			544			2,458
Net loss, as adjusted	$	(17,288	)	$	(20,707	)	$	(37,995	)

17

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 7   INVESTMENT IN MINERA SANTA CRUZ S.A. (“MSC”) — SAN JOSÉ MINE (Continued)

The change in the Company’s investment in MSC during the period ended September 30, 2012 is summarized as follows:

	As at
	September 30, 2012
	(in thousands)
Investment in MSC, beginning of period	$	—
Fair value of investment in MSC from acquisition of Minera Andes	261,186
Income from equity investment	18,505
Amortization of fair value increments	(3,746		)
Dividends	(4,765		)
Investment in MSC, end of period	$	271,180

	Three Months Ended			Period Ended
	September 30, 2012			September 30, 2012
	(in thousands)			(in thousands)
Summary of MSC’s financial information from operations
Sales - MSC 100%	$	116,299		$	212,902
Net income - MSC 100%	26,343			37,765
McEwen Mining’s portion - 49%	12,908			18,505
Income on investment in MSC	$	12,908		$	18,505
Amortization of fair value increments	(1,597		)	(3,746		)
Income on investment in MSC, net of amortization	$	11,311		$	14,759

As at September 30, 2012, MSC had current assets of $151.7 million, total assets of $839.8 million, current liabilities of $99.4 million and total liabilities of $303.0 million.  These balances include the increase in fair value and amortization of the fair value increments arising from the preliminary purchase price allocation.

On July 30, 2012, the Company received a dividend from MSC of 9.8 million Argentine pesos ($2.2 million).

On September 28, 2012, MSC declared a dividend of 25.0 million Argentine pesos ($5.3 million), of which 12.25 million Argentine pesos ($2.6 million) was payable to the Company, and was subsequently received on October 4, 2012.

NOTE 8   PROPERTY AND EQUIPMENT

At September 30, 2012 and December 31, 2011, property and equipment consisted of the following (in thousands):

	September 30, 2012			December 31, 2011
Trucks and trailers	$	1,417		$	1,247
Office furniture and equipment	1,054			638
Drill rigs	1,869			998
Building	1,469			853
Land	8,669			8,619
Mining equipment	1,026			956
Inactive milling equipment	644			778
Subtotal	$	16,148		$	14,089
Less: accumulated depreciation	(2,665		)	(2,317		)
Total	$	13,483		$	11,772

18

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 8   PROPERTY AND EQUIPMENT (Continued)

As a result of the acquisition of Minera Andes, the Company increased its net property and equipment by $1.6 million during the first quarter of 2012.  In addition, during the first quarter of 2012, the Company invested an additional $1.0 million in drill rigs in Argentina.

During the second quarter of 2012, the Company made a decision to sell four drill rigs, which were purchased during the first quarter of 2012, and their related accessories, with a net realizable value of $1.8 million, net of impairment of $0.2 million, from its operations in Argentina since they no longer met the Company’s needs.  During the third quarter of 2012, these assets were sold for proceeds of $1.8 million.

During 2012, the Company also sold some of its inactive milling equipment, mobile homes and vehicles from its Tonkin property in Nevada, with a net book value of $0.1 million for net proceeds of $1.4 million.

NOTE 9   SHAREHOLDERS’ EQUITY

At the special meeting on January 19, 2012, the shareholders of the Company approved the Second Amended and Restated Articles of Incorporation which, among other things, increased the authorized capital of the Company to 500,000,000 shares of common stock, and added one share of Series B Special Voting Preferred Stock.

As discussed in Note 2 above, on January 24, 2012, the Company issued 127.3 million 2012-Exchangeable Shares in connection with the acquisition of Minera Andes.

During the nine months ended September 30, 2012, 51.6 million exchangeable shares were converted into common stock, of which 48.4 million were related to the 2012-Exchangeable Shares.  At September 30, 2012, total outstanding exchangeable shares not exchanged totaled 78.9 million.

On March 26, 2012, the Company announced that its subsidiary, US Gold Canadian Acquisition Corporation, had established a redemption date of May 30, 2012, in respect of all of its outstanding exchangeable shares relating to the acquisitions from 2007 (“2007-Exchangeable Shares”).  As of May 30, 2012, 2.5 million of the remaining 2007-Exchangeable Shares were redeemed for issuance of 2.5 million shares of common stock and there were nil outstanding as at September 30, 2012.

During the nine months ended September 30, 2012, the Company issued 1.3 million shares of common stock upon exercise of stock options under the Equity Incentive Plan as well as for exercise of stock options assumed by the Company in the acquisition of Minera Andes, at exercise prices ranging from $0.91 to $3.35 per share for proceeds of $3.6 million.  During the same period, the Company issued 83,000 shares of common stock as part payment for mining concessions in Mexico.

NOTE 10   STOCK-BASED COMPENSATION

On January 19, 2012, at a special meeting of shareholders, the Company’s shareholders approved amendments to the Equity Incentive Plan to, among other things, increase the number of shares of common stock reserved for issuance thereunder from 9 million to 13.5 million shares.

During the first nine months of 2012, the Company granted 0.3 million of stock options to the Company’s Chief Operating Officer, as part of his employment contract, at an exercise price of $5.80 per share.  During the same period in 2011, the Company granted stock options to certain employees, directors and consultants for an aggregate of 0.9 million shares of common stock at an exercise price of $7.10 per share.  The options vest equally over a three year period if the individual remains affiliated with the Company (subject to acceleration of vesting in certain events) and are exercisable for a period of 10 years from the date of issue.

19

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 10   STOCK-BASED COMPENSATION (Continued)

The Company estimates the fair value of each stock option at the grant date by using the Black-Scholes option-pricing model.  During the three and nine months ended September 30, 2012, the Company recorded stock option expense of $0.7 million and $2.8 million, respectively.  The stock option expense reported during the three and nine months ended September 30, 2012 also included $0.1 million and $1.1 million, respectively, resulting from stock options assumed by the Company in the acquisition of Minera Andes.

During the three and nine months ended September 30, 2011, the Company recorded stock option expense of $0.7 million and $1.9 million, respectively.

The principal assumptions used in applying the Black-Scholes option pricing model for the awards for the three and nine months ended September 30, 2012 and 2011 were as follows:

	Three Months Ended		Nine Months Ended
	September 30, 2012	September 30, 2011	September 30, 2012	September 30, 2011
Risk-free interest rate	—	—	0.97%	1.82% to 2.33%
Dividend yield	—	—	n/a	n/a
Volatility factor of the expected market price of common stock	—	—	75%	90% to 100%
Weighted-average expected life of option	—	—	6.0 years	6.6 years
Weighted-average grant date fair value	—	—	$3.80	$4.97

The following tables summarize information about stock options outstanding and exercisable at September 30, 2012 for the Company’s Option Plan, the replacement options from the acquisition of Nevada Pacific Gold Ltd. in 2007, and the replacement options from the acquisition of Minera Andes in 2012. C$ refers to Canadian dollars.

McEwen Mining

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
$0.00-$2.00	1,339,000	$	1.05	6.19	1,339,000	$	1.05	6.19
$2.01-$4.00	1,030,800	$	2.57	6.05	827,467	$	2.59	5.73
$4.01-$6.00	366,500	$	5.66	8.49	66,500	$	5.01	4.70
$6.01-$8.31	886,333	$	7.17	8.19	331,664	$	7.28	7.74

Nevada Pacific Gold Ltd.

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
C$0.00-C$5.00	271,543	C$	4.54	3.51	271,543	C$	4.54	3.51
C$5.01-C$6.70	123,050	C$	5.96	2.26	123,050	C$	5.96	2.26

20

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 10   STOCK-BASED COMPENSATION (Continued)

Minera Andes

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
C$0.00-C$2.22	220,500	C$	1.67	1.33	220,500	C$	1.67	1.33
C$2.23-C$3.02	525,150	C$	2.40	2.31	377,101	C$	2.45	2.19

NOTE 11   RELATED PARTY TRANSACTIONS

Since the second quarter of 2010, an aircraft owned and operated by Lexam L.P. (of which Mr. McEwen is a limited partner and beneficiary) has been made available to the Company in order to expedite business travel. In his role as Chairman and Chief Executive Officer of the Company, Mr. McEwen must travel extensively and frequently on short notice.

Mr. McEwen is able to charter the aircraft from Lexam L.P. at a preferential rate. The Company’s independent board members have approved a policy whereby only the variable expenses of operating this aircraft for business related travel are eligible for reimbursement by the Company.  The hourly amount that the Company has agreed to reimburse Lexam L.P. is under half the full cost per hour of operating the aircraft or equivalent hourly charter cost and in any event less than even Mr. McEwen’s preferential charter rate. Where possible, trips also include other company personnel, both executives and non-executives, to maximize efficiency.

For the three and nine months ended September 30, 2012, the Company incurred and paid $14,809 (2011 - $0) and $218,528 (2011 - $60,477), respectively, to Lexam L.P. for the use of this aircraft.

Ending in 2011, the Company had a management services agreement (“Services Agreement”) with 2083089 Ontario Inc. (“208”) pursuant to which the Company agreed to reimburse 208 for rent, personnel, office expenses and other administrative services on a cost recovery basis.  208 is owned by Robert McEwen, the Chairman and Chief Executive Officer of the Company and beneficial owner of more than 5% of its voting securities.  Mr. McEwen is also the Chief Executive Officer and Director of 208.   Effective January 2012, the Company no longer required the services agreement with 208 as those costs are now paid directly by the Company.  During the three and nine months ended September 30, 2011, the Company incurred and paid $18,134 and $73,628, respectively under the agreement.

Each of the above agreements were approved or ratified by the independent members of the Company’s Board of Directors.

21

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 12   OPERATING SEGMENT REPORTING

McEwen Mining is engaged in the exploration for and production of precious metals in the U.S., Mexico and Argentina. The Company identifies its reportable segments as those consolidated operations that are currently engaged in the exploration for and production of precious metals.  Operations not actively engaged in the exploration for, or production of precious metals, are aggregated at the corporate level for segment reporting purposes.

									Corporate &
	Argentina		Mexico			U.S.			Other			Total
	(in thousands)
For the three months ended September 30, 2012
Income on investment in Minera Santa Cruz S.A. (net of amortization)	$	11,311	$	—		$	—		$	—		$	11,311
Gold and silver sales	—		456			—			—			456
Production costs applicable to sales	—		119			—			—			119
Exploration costs	1,539		3,847			999			323			6,708
Mine construction costs	—		4,671			—			—			4,671
Mine development and operating costs	—		2,406			—			—			2,406
Operating income (loss)	9,200		(12,650		)	(4,234		)	(2,870		)	(10,554		)
For the nine months ended September 30, 2012
Income on investment in Minera Santa Cruz S.A. (net of amortization)	$	14,759	$	—		$	—		$	—		$	14,759
Gold and silver sales	—		456			—			—			456
Production costs applicable to sales	—		119			—			—			119
Exploration costs	11,369		12,394			3,905			897			28,565
Mine construction costs	—		13,306			—			—			13,306
Mine development and operating costs	—		8,622			—			—			8,622
Operating income (loss)	1,231		(38,733		)	(7,864		)	(11,451		)	(56,817		)
As at September 30, 2012
Investment in Minera Santa Cruz S.A.	$	271,180	$	—		$	—		$	—		$	271,180
Mineral property interests	541,702		14,050			229,526			—			785,278
Total assets	831,129		42,717			234,804			2,555			1,111,205
									Corporate &
	Argentina		Mexico			U.S.			Other			Total
	(in thousands)
For the three months ended September 30, 2011
Exploration costs	—		$	10,822		$	4,114		$	179		$	15,115
Operating loss	—		(12,196		)	(5,736		)	(3,307		)	(21,239		)
For the nine months ended September 30, 2011
Exploration costs	—		$	22,846		$	9,066		$	738		$	32,650
Operating loss	—		(25,728		)	(11,710		)	(6,686		)	(44,124		)
As at December 31, 2011
Mineral property interests	—		$	12,750		$	232,704		$	—		$	245,454
Total assets	—		33,899			238,402			38,054			310,355

NOTE 13   FAIR VALUE ACCOUNTING

Fair value accounting establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value.  The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements).  The three levels of the fair value hierarchy are described below:

Level 1	Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
Level 2	Quoted prices in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; and
Level 3	Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (supported by little or no market activity).

22

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 13   FAIR VALUE ACCOUNTING (Continued)

The following table identifies certain of the Company’s assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy.  As required by accounting guidance, assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

	Fair Value as at September 30, 2012
	Total		Level 1		Level 2		Level 3
	(in thousands)
Assets:
Cash and cash equivalents	$	18,520	$	18,520	$	—	$	—
Marketable equity securities	6		6		—		—
	$	18,526	$	18,526	$	—	$	—
Liabilities:
Accounts payable and accrued liabilities	$	7,181	$	—	$	7,181	$	—

	Fair Value as at December 31, 2011
	Total		Level 1		Level 2		Level 3
	(in thousands)
Assets:
Cash and cash equivalents	$	13,416	$	13,416	$	—	$	—
Short-term investments	3,933		3,933		—		—
Marketable equity securities	1,480		897		583		—
	$	18,829	$	18,246	$	583	$	—
Liabilities:
Accounts payable and accrued liabilities	$	5,612	$	—	$	5,612	$	—

The Company’s cash and cash equivalents is classified within Level 1 of the fair value hierarchy because it is valued using quoted market prices.  The fair value of this balance approximates the carrying amounts due to its short-term nature and historically negligible credit losses.  The cash equivalent instruments that are valued based on quoted market prices in active markets are primarily money market securities.

The Company’s marketable equity securities which were exchange traded are valued using quoted market prices in active markets and as such are classified within Level 1 of the fair value hierarchy.  The fair value of the marketable equity securities is calculated as the quoted market price of the marketable equity security multiplied by the quantity of shares formerly held by the Company.  The other portion of the Company’s marketable equity securities, which were comprised of share purchase warrants not listed on a public exchange, are valued using option pricing models.  Valuation models require a variety of inputs, including strike price, contractual terms, market prices, measures of volatility and interest rate.  Because the inputs are derived from observable market data, the other portion of the marketable equity securities is classified within Level 2 of the fair value hierarchy.

The fair value of accounts payable and accrued liabilities approximates the carrying amounts due to their short-term nature.

NOTE 14   COMPARATIVE FIGURES

Certain prior year information was reclassified to conform with the current year’s presentation.

23

MCEWEN MINING INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
September 30, 2012

NOTE 15   SUBSEQUENT EVENT

On October 29, 2012, the Company announced the launch of a transferrable rights offerings backstopped by Mr. McEwen, the Company’s Chairman and CEO, in which all existing holders of common stock of McEwen Mining and existing holders of the 2012-Exchangeable Shares have the opportunity to participate on an equal and proportional basis in purchasing additional Common Shares or 2012-Exchangeable Shares at a price of $2.25 (or C$2.24) per share, which represents a 50% discount to the closing share price prior to the announcement.  Shareholders will receive one right for each Common Share or 2012-Exchangeable Share and 10 rights are needed to purchase an additional share of the same class.  The Company will raise approximately $60 million in gross proceeds with this transaction.  The record date for shareholders of the Company to receive rights is November 8, 2012 and the rights will expire on December 4, 2012.  In the interim period, the rights on the Common Shares will trade publicly on the NYSE and TSX and the rights on the 2012-Exchangeable Shares will trade on the TSX.

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Item 2.  MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

In the following discussion, “McEwen Mining”, “we”, “our”, and “us” refers to McEwen Mining Inc. and as the context requires, its consolidated subsidiaries.

The following discussion updates our plan of operation as of November 6, 2012 for the foreseeable future. It also analyzes our financial condition at September 30, 2012 and compares it to our financial condition at December 31, 2011.  Finally, the discussion analyzes our results of our operations for the three and nine months ended September 30, 2012 and compares those results to the three and nine months ended September 30, 2011.  We suggest that you read this discussion in connection with the MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS contained in our annual report on Form 10-K for the year ended December 31, 2011.

Reliability of Information: Minera Santa Cruz S.A., the owner of the San José Mine, is responsible for and has supplied to us all reported results from the San José Mine.  The technical information contained herein is, with few exceptions as noted, based entirely on information provided to us by Minera Santa Cruz S.A. (“MSC”).  Our joint venture partner, a subsidiary of Hochschild Mining plc, and its affiliates other than MSC do not accept responsibility for the use of project data or the adequacy or accuracy of this document.  As we are not the operator of the San José Mine, there can be no assurance that production information reported to us by MSC is accurate, we have not independently verified such information and readers are therefore cautioned regarding the extent to which they should rely upon such information.

Overview

Business

McEwen Mining Inc. was organized under the laws of the State of Colorado on July 24, 1979.  Since inception, the Company has been engaged in the exploration for, development of, production and sale of gold and silver.  On January 24, 2012, we changed our name from US Gold Corporation to McEwen Mining Inc. after the completion of the acquisition, by way of a statutory plan of arrangement pursuant to the laws of the Province of Alberta, Canada, of Minera Andes Inc. (“Minera Andes”).   Our principal assets consists of our 49% interest in the San José Mine in Santa Cruz, Argentina; the El Gallo Complex in Sinaloa, Mexico; the Gold Bar Project in Nevada, United States; the Los Azules Project in San Juan, Argentina, and a large portfolio of exploration properties in Argentina, Nevada and Mexico.

In this report, Au represents gold, Ag represents silver, oz represents ounce, opt represents troy ounces per short ton, gpt represents grams per metric tonne, ft. represents feet, m represents meters, km represents kilometer, and sq. represents square.  All of our financial information is reported in United States (“U.S.”) dollars, unless otherwise noted.

Development and Exploration Activities

El Gallo Complex, Mexico

During the third quarter of 2012, construction at El Gallo Phase 1 was completed. On September 24, 2012, we announced that the first gold pour had been achieved.  Based on our progress in commissioning the mine, we expect to achieve commercial production for operational purposes, defined as sustaining an average of 80% or higher of design capacity across mining, crushing and processing processes over a 30 day period, in late 2012.  Phase 1 consists of a 3,000 tonne per day, three-stage crushing plant, Adsorption-Desorption-Recovery (“ADR”) process plant, a heap leach pad, and related infrastructure for mining and processing.  Total capital costs to construct Phase 1 equaled $13.5 million. During the third quarter of 2012, a total of 133,321 tonnes at a grade of 1.34 gpt gold was crushed and delivered to the heap leach pad. A further 124,145 tonnes at a grade of 1.26 gpt gold remained in stockpile. Approximately 2.2 million tonnes of waste and overburden has been mined during the quarter. The majority of this waste was mined in order to access the deeper La Prieta zone.

On September 10, 2012, we announced the results of a feasibility study for El Gallo Phase 2, although it is not compliant with SEC Guide 7.  The study outlined 11.7 million tonnes of mineralized material at an average grade of 101.3 gpt of silver that could be extracted over an approximate 6.5 year mine life. Phase 2 will consist of an open-pit mine utilizing

25

conventional crushing and milling, followed by whole ore leaching and a Merrill Crowe recovery process.

During the first nine months of 2012, 102,082 ft. (31,113 m) of diamond drilling was completed at the El Gallo Complex.  During the third quarter of 2012 the focus was on increasing the size of the known mineralization within the Phase 1 mine area.  During the remainder of 2012, drilling will focus on continued exploration and increasing the confidence associated with the mineralization at a number of deposits that are currently outside of the present mine plan.

We have spent $12.4 million on exploration within Mexico during 2012.  We expect to spend an additional $2.5 million during the fourth quarter of 2012.  This amount has been increased from the beginning of the year due to ongoing exploration success.

El Gallo Phase 2 construction permits will be submitted during the first quarter of 2013. We expect to receive all necessary approvals for construction by the third quarter of 2013.

Gold Bar Project, Nevada

During the third quarter of 2012, baseline studies for the summer season were completed in support of the U.S. Bureau of Land Management (“BLM”) and State of Nevada permitting required for mine development and construction.

We expect to continue to advance the Gold Bar Project through the permitting process during 2012 with a goal of putting the project into production.  This will involve environmental baseline data review with expected Plan of Operations permit application and submittal in the first quarter of 2013. Sites for constructing test wells for water supply were located and will be constructed for pump testing in the fourth quarter of 2012, weather permitting.  All resource survey reports will be reviewed internally, and then submitted to BLM for comment.

Exploration drilling is expected to take place at Limo and other areas in Nevada, as warranted.  Further reconnaissance sampling and mapping will continue on our other Nevada properties.  The exploration budget for Nevada for 2012 is approximately $4 million, of which $3.3 million has been spent during the first nine months of 2012.

Los Azules Copper Project, Argentina

In June 2012, we announced an updated resource estimate on the Los Azules Copper project which incorporated approximately 26,576 ft (8,100 m) of drilling from the 2010-2011 and 2011-2012 drilling seasons.  This updated resource estimate showed that drilling has increased both the level of confidence associated with the mineralization and the estimated amount of the mineralized material.

During the first half of 2012, drilling at the project was slow due to difficult ground conditions and equipment problems.  A total of 9,301 ft. (2,835 m) was drilled during the field season in eight holes, which ran from early January to late April and fell short of the 26,247 ft. (8,000 m) originally planned.  Although significant intercepts of copper mineralization were encountered (summarized in our May 10, 2012 press release), most of the drill holes started were unable to reach their target depth due to difficult ground conditions.

In order to address the problems encountered during this past drilling season at Los Azules, we signed contracts with two drilling companies to provide us with a total of five core drills and one rotary drill for the upcoming 2012-2013 drill season which are considerably more powerful than the ones used this past season.  We opened the site in September 2012 and commenced drilling in October 2012.  The current drilling season is expected to end in April 2013.

The drilling efforts are expected to primarily target new areas of mineralization, especially to the southwest side of the known deposit where we are targeting geophysical anomalies detected during geophysical surveys completed by Minera Andes in 2010.

During the nine months ended September 30, 2012, we spent $7.4 million in exploration at Los Azules.  We have budgeted $5 million towards exploration at the Los Azules Project during the fourth quarter of 2012.  We plan to drill a total of 49,215 ft. (15,000 m) over the current drilling season. The budget for the entire 2012-2013 drilling season is estimated to be $16 million.

26

Santa Cruz Exploration, Argentina

During the first half of 2012, a total of 36,583 ft. (11,150 m) of percussion drilling was completed on our Celestina project. Exploration work ceased towards the end of May 2012 with the onset of Argentinian winter.

In September 2012, we received the drill permits for the Telkin project, one of our 100% owned claim package adjacent to the San José Mine.  We expect that drilling with a reverse-circulation drill rig will commence during the fourth quarter of 2012, with initial plans to drill approximately 8,201 ft. (2,500 m).

We are continuing with our review of our 100% owned properties in the province of Santa Cruz, Argentina with extensive sampling and mapping taking place, along with selective drilling of prospective targets.  We have budgeted $4.5 million towards exploration in Santa Cruz for 2012, of which $3.6 million was spent during the first nine months of 2012.

Corporate Development Activities

Rights Offerings

On October 29, 2012, we announced the launch of a transferrable rights offerings backstopped by Mr. McEwen, our Chairman and CEO, in which all existing holders of common stock of McEwen Mining and existing holders of the 2012-Exchangeable Shares have the opportunity to participate on an equal and proportional basis in purchasing additional Common Shares or 2012-Exchangeable Shares at a price of $2.25 (or C$2.24) per share, which represents a 50% discount to the closing share price prior to the announcement.  Shareholders will receive one right for each Common Share or 2012-Exchangeable Share and 10 rights are needed to purchase an additional share of the same class.  We will raise approximately $60 million in gross proceeds with this transaction.  The record date for shareholders to receive rights is November 8, 2012 and the rights will expire on December 4, 2012.  In the interim period, the rights on the Common Shares will trade publicly on the NYSE and TSX and the rights on the 2012-Exchangeable Shares will trade on the TSX.

Business Acquisition

On January 24, 2012, we completed the acquisition of Minera Andes (“Arrangement”) through a court-approved plan of arrangement under Alberta, Canada law, under which Minera Andes, a Canadian company, became an indirect wholly-owned subsidiary of McEwen Mining.

Our management and Board of Directors believes that the combination with Minera Andes is in the best interests of our company and our shareholders because the combined company is expected to have a stronger combined cash position and balance sheet, sources of revenue, active mining operations, enhanced trading liquidity, a significant growth profile, industry leading costs, an expanded exploration program and additional technical expertise.

On the closing date of the Arrangement, holders of Minera Andes’ common stock received a number of exchangeable shares of McEwen Mining Minera Andes Acquisition Corporation (“2012-Exchangeable Shares”), an indirect wholly-owned Canadian subsidiary of McEwen Mining, equal to the number of Minera Andes shares, multiplied by the exchange ratio of 0.45.  In the aggregate, former Minera Andes shareholders received 127,331,498 2012-Exchangeable Shares.  Our common stock began trading on the NYSE and TSX under the symbol “MUX” and the 2012-Exchangeable Shares began trading on the TSX under the symbol “MAQ” on January 27, 2012.

In June 2011, Robert R. McEwen, our Chairman, President, Chief Executive Officer and largest shareholder and then also the Chairman, President, Chief Executive Officer and largest shareholder of Minera Andes, proposed the Arrangement.  In connection with the Arrangement, Mr. McEwen received approximately 38.7 million 2012 Exchangeable Shares.  Mr. McEwen owns approximately 25.1% of the shares of the Company.

As a result of the Arrangement and on the date of closing, the combined company was held approximately 52% by existing McEwen Mining shareholders and 48% by former Minera Andes shareholders. On a diluted basis, the combined company was held approximately 53% by then-existing McEwen Mining shareholders and 47% by former Minera Andes shareholders.

27

The 2012-Exchangeable Shares are exchangeable for our common stock on a one-for-one basis.  Option holders of Minera Andes received replacement options entitling them to receive, upon exercise, shares of our common stock, reflecting the exchange ratio of 0.45 with the appropriate adjustment of the exercise price per share.  The option life and vesting period of the replacement options has not changed from the option life granted under the Minera Andes option plan.

The estimated fair value of the vested portion of the replacement options of $3.2 million have been included as part of the purchase price consideration at their fair values based on the Black-Scholes pricing model as illustrated below.

The principal assumptions used in applying the Black-Scholes option pricing model were as follows:

	January 24, 2012
Risk-free interest rate	0.02% to 0.39%
Dividend yield	n/a
Volatility factor of the expected market price of common stock	46% to 77%
Weighted-average expected life of option	1.4 years

The acquisition has been accounted for using the acquisition method in accordance with ASC Topic 805, Business Combinations, with McEwen Mining being identified as the acquirer.  The measurement of the purchase consideration was based on the market price of our common stock on January 24, 2012, which was $5.22 per share.  The total purchase price, including the fair value of the options, amounted to $667.8 million.  The total transaction costs incurred through September 30, 2012 by us was $5.3 million, of which $3.9 million was reported in the year ended December 31, 2011 in general and administrative expenses, and $1.4 million for the nine months ended September 30, 2012 in acquisition costs in the consolidated statements of operations and comprehensive loss.

The allocation of the purchase price on a preliminary basis, based on the estimated fair value of assets acquired and liabilities assumed on January 24, 2012, is summarized in the following table (in thousands).

	Fair Value
Purchase price:
Exchangeable shares of McEwen Mining Minera Andes Acquisition Corp	$	664,671
Stock options to be exchanged for options of McEwen Mining	3,175
	$	667,846
Net assets acquired:
Cash and cash equivalents	$	31,385
Short-term investments	4,952
Other current assets	9,828
Inventories	1,362
Mineral property interests	541,702
Investment in Minera Santa Cruz S.A.	261,186
Equipment	1,647
Accounts payable	(5,323		)
Deferred income tax liability	(178,893		)
	$	667,846

For the purposes of our financial statements, the purchase consideration has been allocated to the fair value of assets acquired and liabilities assumed, based on an independent valuation report and management’s best estimates and taking into account all available information at the time these consolidated financial statements were prepared.  The allocation is still preliminary and could be subject to change.  Mineral property interests acquired relate primarily to the Los Azules Copper Project while the Investment in Minera Santa Cruz S.A. reflects the 49% ownership of the San José Mine.  The deferred income tax liability arises due to the excess of the fair market values reflected herein compared to the underlying tax values of those assets.

28

Dividend Payment

As a result of the acquisition of Minera Andes, we also acquired a dividend receivable of $9.4 million.  On February 24, 2012, Minera Santa Cruz S.A. (“MSC”), owner of the San José Mine, made its first dividend payment in the company’s history; our portion of the dividend amounted to $9.4 million.

Results of Operations — MSC

Overview

The following discussion relates only to MSC and is disclosed on a 100% basis of which we indirectly own 49%.  We account for our investment in MSC using the equity method.  Furthermore, this discussion is based on the results for the first nine months of 2012 whereas we have only recorded income from our equity investment for the period from January 25, 2012 to September 30, 2012.  MSC, the entity which owns and operates the San José Mine, is responsible for and has supplied to us all reported results and operational updates from the San José Mine.

For the three and nine months ended September 30, 2012, MSC reported net income of $26.3 million and $47.9 million, respectively.  The amortization of the fair value increments arising from the preliminary purchase price allocation decreased the reported net income from MSC for the three and nine months ended September 30, 2012 by $3.3 million and $7.6 million, respectively.

During the three months ended September 30, 2012, production was 20,967 ounces of gold and 1,552,000 ounces of silver, compared to production of 20,910 ounces of gold and 1,562,000 ounces of silver in the same period in 2011.

For the three months ended September 30, 2012, net sales increased by 45% as compared to the same period in 2011, primarily due to the sale of accumulated concentrate inventory from previous quarters.

The following table sets out production totals, sales totals, operating cash costs and total cash costs (on a co-product basis) of the San José Mine for the first nine months of 2012 and for the comparable period in 2011. Operating cash costs and total cash costs are considered to be non-GAAP measures (see non-GAAP measures, page 34). Also included below are the production figures on a 49% attributable basis

	Q3 YTD 2012		Q3 2012		Q2 2012		Q1 2012		Q3 YTD 2011		Q3 2011		Q2 2011		Q1 2011
San José - 100%
Tonnes processed (‘000)	382		137		129		116		336		124		98		114
Ounces gold produced (‘000)	63		21		22		20		60		21		18		21
Ounces gold sold (‘000)	61		29		18		14		58		18		22		18
Ounces silver produced (‘000)	4,408		1,552		1,500		1,356		4,416		1,562		1,332		1,522
Ounces silver sold (‘000)	4,343		2,165		1,146		1,032		4,336		1,410		1,584		1,342
Net sales (‘000)	$	232,438	$	116,299	$	56,375	$	59,764	$	236,136	$	80,147	$	88,166	$	67,823
Operating cash cost (‘000)	74,791		25,998		25,535		23,258		62,025		23,024		18,382		20,619
Operating cash cost/tonne ($/t)	196		190		198		201		185		185		187		181
Total cash cost/oz Au ($/oz)	765		755		842		697		555		622		527		514
Total cash cost/oz Ag ($/oz)	14.29		13.60		15.32		13.90		13.09		14.00		13.56		11.70
McEwen Mining - 49% share
Ounces gold produced (‘000)	31		10		11		10		29		10		9		10
Ounces silver produced (‘000)	2,160		760		735		664		2,164		765		653		746
Ounces gold equivalent produced (‘000) (1)	73		25		25		23		71		25		22		24

(1) Gold equivalent calculated using an average silver:gold ratio of 52:1

29

Sales

Net sales realized by MSC from the sale of gold and silver for the quarter ended September 30, 2012 totaled $116.3 million as compared to $80.1 million for the same period in 2011, an increase of $36.2 million or 45%.

Approximately 44% of gold and silver sales during the second quarter of 2012 were delayed due to changes in the export revenue repatriation requirements in Argentina.  In April 2012, the Ministry of the Economy in Argentina announced rules which reduced the number of days mining companies have to repatriate funds back to the country to 15 days.  While MSC and other mining companies sought clarification and amendment to this policy, given the impracticality of meeting this requirement, doré and concentrate production continued at the mine but were not exported for refining and sale.  In May, this repatriation period was increased to 30 days which allowed MSC to resume a portion of silver and gold doré sales.  The repatriation period for doré was subsequently increased to 45 days.  For concentrate sales, MSC was granted an extension for repatriation to 120 days in June and finally in July to 180 days.  Concentrate exports resumed in June and the accumulated concentrate inventory at June 30, 2012 were sold in the third quarter of 2012.  As a result, sales during the third quarter of 2012 included sales of accumulated concentrate inventory from previous quarters.  During the first nine months of 2012, net sales totaled $232.4 million as compared to $236.1 million for the same period in 2011, a decrease of $3.7 million or 2%.

The average gross sale price for gold sold in the third quarter of 2012 was $1,706 per ounce, a decrease of 1% compared to $1,726 per ounce received in the same period in 2011.  In comparison, the average London P.M. fix price for gold decreased by 2% to $1,652 per ounce during the third quarter of 2012, as compared to $1,702 per ounce for the same period in 2011.

The average weighted gross sale price for silver sold in the third quarter of 2012 was $32.60 per ounce, a decrease of 8% compared to $35.82 per ounce received in the same period in 2011.  In comparison, the average London P.M. fix price for silver significantly decreased by 23% to $29.80 per ounce during the third quarter of 2012, as compared to $38.80 per ounce for the same period in 2011.

Operating and Total Costs

The terms operating cash cost or total cash cost used in this section are for the reporting of the MSC operations only and are considered to be non-GAAP measures (see non-GAAP measures, page 32). Operating cash cost per tonne consists of geology, mining, processing, general and administration, royalty costs and refining and treatment costs (for doré product only).  Total cash cost per ounce consists of geology, mining, processing, general and administration, royalty costs, refining and treatment charges (for both doré and concentrate products), sales costs and export taxes.  Depreciation is excluded from both operating cash costs and total cash costs.

Operating cash costs were $26.0 million for the three months ended September 30, 2012, as compared to $23.0 million for the same period in 2011. Average operating cash costs were $190 per tonne of processed ore for the third quarter of 2012 compared to $185 per tonne in 2011, an increase of 2% which is primarily due to an increase in costs in 2012 as a result of inflationary pressures on labor costs, materials and supplies within Argentina.

On a per-ounce co-product basis the average total cash cost was $755 per ounce of gold and $13.60 per ounce of silver for the three months ended September 30, 2012, as compared to $622 per ounce of gold and $14.00 per ounce of silver for the same period in 2011. Co-product average total costs are calculated by dividing the respective proportionate share of the total costs for each metal for the period by the ounces of each respective metal produced. The proportionate share of the total costs is calculated by multiplying the total operating cash costs by the percentage of total production value that the respective metal represents.  Accordingly, approximately 45% of the value of the 2012 production was derived from gold and 55% was derived from silver.  The increase in per-ounce co-product costs for both gold and silver during the third quarter of 2012 compared to the prior year period is primarily related to higher labor costs, higher materials and supplies costs, inflationary pressures within Argentina, and a higher percentage of sales coming from concentrate sales versus doré.  Doré production was significantly reduced while modifications were made to the process plant and production of concentrate was temporarily increased during this time.  Concentrate sales carry higher refining, treatment and export taxes than doré.

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Investment in MSC

The following table shows the reconciliation of MSC’s net income, as reported under U.S. GAAP, compared to the equity pickup that is reported on our financial statements.  Since the acquisition of Minera Andes closed on January 24, 2012, MSC reported us only its net income from January 25, 2012 to September 30, 2012.

Based on the preliminary purchase price allocation, the investment in MSC was originally attributed with an estimated fair value of $225.0 million during the first and second quarter of 2012.  During the third quarter of 2012, the preliminary purchase price allocation was adjusted which increased the estimated fair value of the investment in MSC to $261.2 million.  The adjustment affected the composition of the fair value allocation to MSC’s assets, resulting in a reduction in amortization reported for the first and second quarter of 2012.  Below is a reconciliation of the adjustment for the first and second quarter of 2012.

	For three months ended			For three months ended			For the six months ended
	March 31, 2012			June 30, 2012			June 30, 2012
	(in thousands)
Amortization of fair value increments, as reported	$	2,804		$	1,803		$	4,607
Adjustment	(1,914		)	(544		)	(2,458		)
Amortization of fair value increments, as adjusted	$	890		$	1,259		$	2,149
Net loss, as reported	$	(19,202	)	$	(21,251	)	$	(40,453	)
Adjustment	1,914			544			2,458
Net loss, as adjusted	$	(17,288	)	$	(20,707	)	$	(37,995	)

The change in the Company’s investment in MSC for the period ended September 30, 2012 is summarized as follows:

	As at
	September 30, 2012
	(in thousands)
Investment in MSC, beginning of period	$	—
Fair value of investment in MSC from acquisition of Minera Andes	261,186
Income from equity investment	18,505
Amortization of fair value increments	(3,746		)
Dividends	(4,765		)
Investment in MSC, end of period	$	271,180

	Three Months Ended			Period Ended
	September 30, 2012			September 30, 2012
	(in thousands)			(in thousands)
Summary of MSC’s financial information from operations
Sales - MSC 100%	$	116,299		$	212,902
Net income - MSC 100%	26,343			37,765
McEwen Mining’s portion - 49%	12,908			18,505
Income on investment in MSC	$	12,908		$	18,505
Amortization of fair value increments	(1,597		)	(3,746		)
Income on investment in MSC, net of amortization	$	11,311		$	14,759

As at September 30, 2012, MSC had current assets of $151.7 million, total assets of $839.8 million, current liabilities of $99.4 million and total liabilities of $303.0 million.  These balances include the increase in fair value and amortization of the fair value increments arising from the preliminary purchase price allocation.

On July 30, 2012, we received a dividend from MSC of 9.8 million Argentine pesos ($2.2 million).

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On September 28, 2012, MSC declared a dividend of 25.0 million Argentine pesos ($5.3 million), of which 12.25 million Argentine pesos ($2.6 million) was payable to us, and was subsequently received on October 4, 2012.

Exploration

During the third quarter of 2012, a new vein system was discovered at the San José Mine.  The new discovery is the high-grade gold/silver Emilia vein, located within the known San José area.  The discovery of this new vein system is encouraging and illustrates the prospective nature of the San José Mine and the surrounding package.

During the third quarter of 2012, 85,332 ft. (26,008 m) of drilling was completed.  Drilling was comprised of 35,750 ft. (10,896 m) of brownfield, 21,412 ft. (6,526 m) of infill and 28,170 ft. (8,586 m) of prospecting.

As of September 30, 2012, 228,367 ft. (69,603 m) of drilling was completed for 2012.  Drilling was comprised of 107,518 ft. (32,770 m) of brownfield, 62,339 ft. (19,000 m) of infill and 58,510 ft. (17,833 m) of prospecting.

The objective of the 2012 exploration program at the San José Mine is to complete 362,533 ft. (110,500 m) of diamond drilling, of which 223,097 ft. (68,000 m) will be for exploration of new mineralized material and 139,436 ft. (42,500 m) for infill drilling.  Based on drilling activities completed to date, the San José Mine will not meet its objective for 2012, and estimates that it will only complete approximately 295,290 ft. (90,000 m) by the end of 2012. Total exploration expenditures for 2012 is now expect to be approximately $12.5 million.

At the San José Mine, we expect production for 2012, on a 100% basis, to remain on track to produce approximately 5.7 million ounces of silver and 85,000 ounces of gold.

Results of Consolidated Operations

Nine months ended September 30, 2012 compared to nine months ended September 30, 2011

As a result of the completion of the acquisition of Minera Andes on January 24, 2012, our financial results for this period includes the results of Minera Andes beginning on January 25, 2012.

For the nine months ended September 30, 2012, we recorded a net loss of $40.6 million, or $0.16 per share, compared to a net loss for the corresponding period of 2011 of $45.6 million or $0.33 per share.  The decrease in net loss for the first nine months of 2012 compared to the first nine months of 2011 reflects the results from our acquisition of Minera Andes, including the interest in MSC, as well as our efforts to construct and operate El Gallo Phase 1 in Mexico.  In addition to the earnings from our investment in MSC of $14.8 million, discussed above, we also had revenue from gold and silver sales of $0.5 million from El Gallo Phase 1.  Notwithstanding the acquisition of Minera Andes, including MSC, we expect to continue to incur losses unless and until we significantly increase production.

General and administrative expense during the nine months ended September 30, 2012 increased by $7.8 million to $12.9 million compared to $5.1 million for the same period in 2011.  The majority of the increase was a result of the acquisition of Minera Andes.  The increase was due to an increase in salaries of $2.1 million, increase in legal fees of $1.2 million, increase in stock-based compensation expense of $0.8 million, increase in travel expenses of $0.8 million, increase in rent of $0.4 million, increase in accounting and tax of $0.5 million, increase in bank charges of $0.3 million, increase in investor relations activities of $0.5 million, increase in consultants of $0.3 million, increase in insurance cost of $0.2 million, and the remainder from increases in various miscellaneous expenses.

For the nine months ended September 30, 2012 and September 30, 2011, we incurred $1.4 million and $2.1 million, respectively, in transaction costs in connection with our acquisition of Minera Andes.  The majority of the 2012 costs were incurred during the first quarter of 2012.

Property holding costs during the 2012 period increased by $0.6 million to $4.1 million compared to $3.5 million for the same period in 2011.  The reason for the increase is partly due to the addition of the properties acquired in Argentina in 2012.

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Exploration costs for the first nine months of 2012 decreased by $4.1 million to $28.6 million as compared to $32.7 million for the same period in 2011, reflecting a decrease in exploration activities in Mexico and Nevada to focus more on Phase 1 production of the El Gallo Complex in Mexico, and partially offset by the addition of exploration activities on the properties acquired in Argentina in 2012.  For the first nine months of 2012, exploration spending in Mexico decreased by $10.4 million to $12.4 million, for a total of 102,082 ft. (31,113 m) drilled as compared to $22.8 million, for a total of 314,265 ft. (95,788 m) drilled in the same period of 2011.  For the first nine months of 2012, exploration spending in Nevada decreased by $5.2 million to $3.9 million, for a total of 5,245 ft. (1,599 m) drilled as compared to $9.1 million, for a total of 68,435 ft. (20,859 m) drilled in the same period in 2011.  From January 25, 2012 to September 30, 2012, exploration spending in Argentina was $11.4 million, for a total of 45,884 ft. (13,985 m) drilled.

Total stock-based compensation expense in the 2012 period increased to $2.8 million compared to $1.9 million for the same period of 2011, mainly due to the cost of the replacement stock options for Minera Andes as a result of the acquisition.  Stock-based compensation expense is allocated to both general and administrative expense and exploration costs within the unaudited consolidated statements of operations and comprehensive loss.

During the first nine months of 2012, we incurred $13.3 million on the construction of the mine at the El Gallo Complex.  These costs include the construction of the crusher, ADR process plant, leach pad, and management costs to oversee the construction.  As noted in our Critical Accounting Polices, these costs are expensed since we have not demonstrated proven and probable reserves.  During the first nine months of 2012, we also incurred $8.6 million in operating costs at the El Gallo Complex.  The majority of these costs are for contract mining services in order to mine and transport waste and mineralized material at the El Gallo Complex.  There were no similar costs in the comparable period in 2011.

During the nine month period ended September 30, 2012, we disposed of certain inactive milling equipment, mobile homes and vehicles from our Tonkin property in Nevada and drill rigs and related accessories in Argentina for net proceeds of $3.1 million, which resulted in a net gain of $1.3 million.

During the third quarter of 2012, we performed a strategic review of our property holdings in Nevada and as a result, allowed all the claims from three of the properties to lapse.  These mineral property interests in question were acquired in 2007 and had a carrying value of $2.9 million, which was written off during the third quarter, along with a resulting reduction in deferred tax liability and recovery of future income taxes of $1.0 million.  This resulted in a net write-off of $1.9 million which is included in the net loss for the nine months period ended September 30, 2012.

Other income totaled $1.3 million for the nine months ended September 30, 2012, mainly due to the sale of gold and silver bullion, offset by an other-than-temporary impairment on our marketable equity securities.  During the first nine months of 2012, we sold 4,863 ounces of gold bullion and 527,843 ounces of silver held as investments, which resulted in a net realized gain of $3.1 million.  During the second quarter of 2012, we deemed most of our available-for-sale securities to be other-than-temporarily impaired and as a result recorded an impairment of $2.0 million during the period.  We also recorded an unrealized loss on silver bullion of $0.4 million as a result of a reduction in the fair market value of silver as at June 30, 2012. During the first nine months of 2012, we also recorded a foreign currency exchange gain of $0.5 million, reflecting a weakening U.S. dollar against the Canadian dollar and its effect on the net monetary assets and cash that are denominated in Canadian dollars.

Three months ended September 30, 2012 compared to three months ended September 30, 2011

For the three months ended September 30, 2012, we recorded a net loss of $2.6 million, or $0.01 per share, compared to a net loss for the corresponding period of 2011 of $23.7 million or $0.17 per share.  The decrease in net loss for the third quarter of 2012 compared to the third quarter of 2011 reflects the results from our acquisition of Minera Andes as well as our efforts to construct and develop Phase 1 gold production in Mexico.  Revenue during the third quarter of 2012 was from our investment in MSC of $11.3 million, discussed above and our gold and silver sales of $0.5 million from El Gallo.

General and administrative expense during the 2012 period increased by $2.6 million, from $1.5 million in the 2011 period to $4.1 million in the 2012 period.  The majority of the increase came from the acquisition of Minera Andes.  The increase was due to increase in salaries of $1.3 million, increase in legal fees of $0.7 million, increase in travel expenses of $0.1 million, increase in investor relations activities of $0.1 million, and the remainder from increases in various miscellaneous expenses.

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Property holding costs during the 2012 period slightly decreased by $0.2 million, from $2.4 million in the 2011 period to $2.2 million in the 2012 period.

Exploration costs for the third quarter of 2012 decreased by $8.4 million, from $15.1 million in the 2011 period to $6.7 million in the 2012 period, reflecting exploration activities from Argentina and a decrease in exploration activities in Mexico and Nevada.  During the third quarter of 2012, exploration spending in Mexico decreased by $7.0 million to $3.8 million, for a total of 32,381 ft. (9,869 m) drilled as compared to $10.8 million, for a total of 156,696 ft. (47,761 m) drilled in the same period of 2011.  During the third quarter of 2012, exploration spending in Nevada decreased by $3.1 million to $1.0 million, with minimal drilling activities, as compared to $4.1 million, for a total of 11,814 ft. (3,601 m) drilled in the same period in 2011.  During the third quarter of 2012, exploration spending in Argentina was $1.5 million, primarily in connection with the start up of the 2012-2013 drilling season as there were no drilling activities during the quarter due to the Argentinian winter.

Total stock-based compensation expense in the 2012 period was $0.7 million, unchanged from the same period of 2011, mainly due to the cancellation of some unvested stock options and partially offset by the cost of the replacement stock options for Minera Andes as a result of the acquisition.

During the third quarter of 2012, we incurred $4.7 million and $2.4 million on the construction and operation of the El Gallo Complex, respectively.  These are the same activities mentioned above in the discussion of the nine month period ended September 30, 2012.  There were no similar costs in the comparable period in 2011.

Other income totaled $1.6 million for the three months ended September 30, 2012, mainly due to the sale of gold and silver bullion.

Non-GAAP Measures

In this report, we have provided information prepared or calculated according to U.S. GAAP, as well as provided some non-U.S. GAAP (“non-GAAP”) performance measures.  Because the non-GAAP performance measures do not have any standardized meaning prescribed by U.S. GAAP, they may not be comparable to similar measures presented by other companies.

Operating cash cost per tonne is calculated by dividing the total operating cash costs for the period by the tonnes processed in that period. Total operating cash costs are the sum of geology, mining, processing, general and administration, royalty costs and refining and treatment charges (for doré product only).   Prior to 2012, operating cash costs also included some sales costs charged by the previous doré refinery contract.  Total cash cost per ounce are calculated on a co-product basis and by dividing the respective proportionate share of the total cash costs for the period attributable to each metal by the ounces of each respective metal produced. Total cash cost per ounce is the sum of the geology, mining, processing, general and administration costs, royalties, refining and treatment charges (for both doré and concentrate products), sales costs and export taxes divided by the number of ounces of gold and silver produced at the mine.  Depreciation is excluded from both operating cash costs and total cash costs.

We use operating and total cash cost as an operating performance indicator. We provide this measure to provide additional information regarding operational efficiencies at the San José Mine. Operating and total cash costs should be considered as a non-GAAP performance measure and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with U.S. GAAP.  Cash costs are based on information from MSC and do not impact our consolidated financial statements. There are material limitations associated with the use of such non-GAAP measures.  Since these measures do not incorporate revenues, changes in working capital and non-operating cash costs, they are not necessarily indicative of operating profit or cash flow from operations as determined in accordance with U.S. GAAP.  Changes in numerous factors including, but not limited to, mining rates, milling rates, gold grade, gold recovery, and the costs of labor, consumables, mine site operations , and general and administrative activities can cause these measures to increase or decrease.

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Liquidity and Capital Resources

As of September 30, 2012, we had working capital of $28.5 million, comprised of current assets of $36.0 million and current liabilities of $7.5 million.  This represents a decrease of approximately $13.2 million from the working capital of $41.7 million at fiscal year end December 31, 2011.

With the acquisition of Minera Andes on January 24, 2012, our working capital increased by approximately $42.7 million, including a dividend receivable from MSC of $9.4 million, which was received in February 2012.  We expect to receive further dividends from MSC during 2012, although the timing and amount of those dividends will depend upon silver and gold prices, production levels, operating costs, capital expenditures, Argentine central bank and government restrictions, and a variety of other factors beyond our control.  No dividends were received from MSC during the second quarter of 2012 given MSC’s sales were impacted by the changes in the repatriation requirements.  On July 30, 2012, we received a dividend from MSC of 9.8 million Argentine pesos ($2.2 million).  On September 28, 2012, MSC declared a dividend of 25.0 million Argentine pesos ($5.3 million), of which 12.25 million Argentine pesos ($2.6 million) was payable to us, and subsequently received on October 4, 2012.  We believe our working capital at present is sufficient to fund ongoing exploration and corporate activities over the next 12 months.  We expect the upcoming Los Azules drilling season to be funded primarily from dividends from MSC.

On October 29, 2012, we announced the launch of a transferrable rights offerings backstopped by Mr. McEwen, our Chairman and CEO, in which all existing holders of common stock of McEwen Mining and existing holders of the 2012-Exchangeable Shares have the opportunity to participate on an equal and proportional basis in purchasing additional Common Shares or 2012-Exchangeable Shares at a price of $2.25 (or C$2.24) per share, which represents a 50% discount to the closing share price prior to announcement.  Shareholders will receive one right for each Common Share or 2012-Exchangeable Share and 10 rights are needed to purchase an additional share of the same class.  We anticipate this transaction will raise approximately $60 million in gross proceeds.  The record date for shareholders to receive rights is November 8, 2012 and the rights will expire on December 4, 2012.  In the interim period, the rights on the Common Shares will trade publicly on the NYSE and TSX and the rights on the 2012-Exchangeable Shares will trade on the TSX.

Net cash used in operations for the nine months ended September 30, 2012 increased to $63.5 million from $40.2 million for the corresponding period in 2011, mainly due to increases in cash paid to suppliers and employees as a result of the acquisition of Minera Andes and the increased development and construction expenditures of El Gallo Phase 1, and partially offset by dividend received from MSC of $2.2 million.  Cash paid to suppliers and employees increased to $65.8 million during the 2012 period from $40.2 million during the 2011 period.

Cash provided by investing activities for the nine months ended September 30, 2012 was $65.2 million, primarily due to cash received from the acquisition of Minera Andes of $36.3 million as well as proceeds from the sale of gold and silver bullion of $23.8 million.  This compares to cash used in investing activities of $38.9 million in the comparable period of 2011, primarily due to additional purchases of gold and silver bullion of $31.3 million, acquisition of mineral property interests in Nevada and Mexico of $9.8 million, additional purchases of property and equipment of $7.8 million and partially offset by proceeds from the sale of gold and silver bullion and marketable equity securities.

Cash provided by financing activities for the first nine months of 2012 was $3.6 million from the exercise of stock options as compared to $106.2 million in 2011 mainly from the public offering of 17.25 million shares.

Critical Accounting Policies

Critical accounting policies and estimates used to prepare the financial statements are discussed with our Audit Committee as they are implemented and on an annual basis.

Listed below are updates to our significant accounting policies since December 31, 2011.

Business Combinations—We account for business combinations using the acquisition method of accounting pursuant to Accounting Standards Codification (“ASC”) Topic 805 — Business Combinations.  The acquisition method requires us to determine the fair value of all acquired assets, including identifiable intangible assets, and all assumed liabilities.  The total cost of acquisitions is allocated to the underlying identifiable net assets, based on their respective estimated fair values.  Determining the fair value of assets acquired and liabilities assumed requires management’s judgment, and the

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utilization of independent valuation experts, and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, and asset lives, among other items.  Transaction costs are expensed as incurred and are reported on the acquisition costs line within the consolidated statements of operations and comprehensive loss.

Investments — Equity Method and Joint Ventures — We account for investments over which we exert significant influence using the equity method of accounting pursuant to ASC Topic 323 — Investments, Equity Method and Joint Ventures.  Under this method, our share of earnings and losses is included in the consolidated statement of operations and comprehensive loss and the balance of the investment is adjusted by a like amount.  Under the equity method, dividends received from an investee are recorded as decreases in the investment account, not as income.  Where there has been a loss in value that is other than a temporary decline, the carrying value is reduced to its fair value.

IVA taxes receivable — In Mexico and Argentina, value added taxes (IVA) are assessed on purchases of materials and services and sales of products.  Businesses are generally entitled to recover the taxes they have paid related to purchases of materials and services, either as a refund or as a credit against future taxes payable.  In Argentina, except for the San José Mine, we expense all IVA as their recoverability is uncertain.

Stockpiles, Ore on Leach Pads, In-process Inventory, Precious Metals Inventory and Materials and Supplies — Stockpiles, ore on leach pads, and in-process inventory are carried at the lower of average cost or net realizable value, if commercial production is achieved. For accounting purposes, we have achieved commercial production during the third quarter of 2012 after its initial gold pour in late September.  Net realizable value represents the estimated future sales price of the product based on current and long-term metals prices, less the estimated costs to complete production and bring the product to sale. Write-downs of stockpiles, ore on leach pads, in-process inventory, precious metals inventory and materials and supplies, resulting from net realizable value impairments, are reported as a component of production costs applicable to sales. The current portion of stockpiles, ore on leach pad, in-process inventory and materials and supplies is determined based on the expected amounts to be processed within the next 12 months. Stockpiles, ore on leach pads, in-process inventory and materials and supplies not expected to be processed within the next 12 months, if any, are classified as long-term.

Stockpiles represent ore that have been extracted from the mine and is available for further processing. Stockpiles are measured by estimating the number of tonnes added and removed from the stockpile, an estimate of the contained metals (based on assay data) and the estimated metallurgical recovery rates. Costs are allocated to stockpiles based on relative values of material stockpiled and processed using current mining costs incurred up to the point of stockpiling the ore. Material is removed from the stockpile at an average cost per tonne.  Since we only achieved commercial production for accounting purposes in September 2012, no value was allocated to stockpiles prior to the month of September 2012.

Ore on leach pads is the ore that is placed on pads where it is treated with a chemical solution that dissolves the gold contained in the ore over a period of months.  Costs are attributed to the leach pads based on current mining costs incurred up to the point of placing the ore on the pad.  Costs are removed from the leach pad based on the average cost per estimated recoverable ounce of gold on the leach pad as the gold is recovered.  The estimates of recoverable gold on the leach pads are calculated from the quantities of ore placed on the leach pads, the grade of ore placed on the leach pads and a recovery percentage.  The quantities of recoverable gold placed on the leach pads are reconciled to the quantities of gold actually recovered (metallurgical balancing), by comparing the grades of ore placed on the leach pads to actual ounces recovered.  The nature of the leaching process inherently limits the ability to precisely monitor inventory levels.  As a result, the metallurgical balancing process is constantly monitored and the engineering estimates are refined based on actual results over time.

In-process inventories represent materials that are currently in the process of being converted to a saleable product.  The El Gallo Phase 1 conversion process is an Adsorption-Desorption-Recovery (“ADR”) processing plant utilizing carbon columns for recovery.  In-process material is measured based on assays of the material fed into the process and the projected recoveries of the respective plants.  In-process inventories are valued at the average cost of the material fed into the process attributable to the source material coming from the mines, stockpiles and/or leach pads plus the in-process conversion costs incurred to that point in the process.

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Precious metal inventory include gold bullion that is unsold and held at the refinery and is valued at the lower of average mining cost or net realizable value.

Materials and supplies inventories are comprised of chemicals, reagents and consumable parts used in drilling and other operating activities.  They are valued at the lower of average cost or net realizable value.  Cost includes applicable taxes and freight.

Revenue Recognition — Revenue includes sales value received for our principal products, gold and silver. Revenue is recognized, net of refining charges and royalties, when title to gold and silver passes to the buyer and when collectability is reasonably assured. Title passes to the buyer based on terms of the sales contract. Revenues from by-product sales are credited to production cost applicable to sales.  Product pricing is determined at the point revenue is recognized by reference to active and freely traded commodity markets, for example, the London Bullion Market for both gold and silver, in an identical form to the product sold.

We entered into a doré sales agreement, whereby we have the option to sell approximately 90% of the gold and silver contained in doré bars produced at the El Gallo Complex prior to the completion of refining, which normally takes 15 business days.

We have a net smelter return (“NSR”) royalty agreement with a third party on all Phase 1 metals production and a portion of future Phase 2 metals production from the El Gallo Complex.  The terms of the royalty agreement stipulate that production up to 30,000 of gold and gold equivalent ounces are subject to a 1% NSR, production between 30,001 to 380,000 of gold and gold equivalent ounces are subject to a 3.5% NSR, and 1% thereafter.  Currently we are subject to the 3.5% NSR.  Under the terms of the royalty agreement, the royalty holder has the option to settle the NSR payment in cash or gold and gold equivalent ounces.  The royalty holder has indicated a preference to settle the NSR payment in gold and gold equivalent ounces which would be calculated on the day the refiner credits our metals account.

Proven and Probable Reserves—The definition of proven and probable reserves is set forth in the SEC Industry Guide 7. Proven reserves are reserves for which (a) quantity is computed from dimensions revealed in outcrops, trenches, workings or drill holes, grade and/or quality are computed from the results of detailed sampling and (b) the sites for inspection, sampling and measurement are spaced so closely and the geological character is so well defined that size, shape, depth and mineral content of the reserves are well-established. Probable reserves are reserves for which quantity and grade and/or quality are computed from information similar to that used for proven (measured) reserves, but the sites for inspection, sampling, and measurement are farther apart or are otherwise less adequately spaced. The degree of assurance, although lower than that for proven (measured) reserves, is high enough to assume continuity between points of observations.

As of September 30, 2012, except for our 49% interest in the San José Mine, none of our other mineralized properties contain resources that satisfy the definition of proven and probable reserves.

Design, Construction, and Development Costs—Certain costs to design and construct mining and processing facilities may be incurred prior to establishing proven and probable reserves.  Prior to commercial production for accounting purposes in September 2012, we classified the Phase 1 development of the El Gallo Complex as an exploration stage project since no Guide 7 proven or probable reserves have been established, and accordingly, substantially all costs, including design, engineering, construction, and installation of equipment were expensed as incurred.

Certain types of equipment, which have alternative uses or significant salvage value, may be capitalized without proven and probable reserves.  If a project commences commercial production, amortization and depletion of capitalized costs for such equipment would be computed on a unit-of—production basis over the expected reserves of the project based on estimated recoverable ounces.

Mine development costs include engineering and metallurgical studies, drilling and other related costs to delineate an ore body, the removal of overburden to initially expose an ore body at open pit surface mines and the building of access ways, shafts, lateral access, drifts, ramps and other infrastructure at underground mines.  Development costs are capitalized when proven and probable reserves exist and the property is a commercially minable property.  Mine development costs incurred either to develop new ore deposits, expand the capacity of operating mines, or to develop mine areas substantially in advance of current production are capitalized.  Costs of start-up activities and costs incurred to maintain

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current production or to maintain assets on a standby basis are charged to operations as incurred.  Costs of abandoned projects are charged to operations upon abandonment.  All capitalized costs are amortized using the units of production method over the estimated life of the ore body based on recoverable ounces to be mined from proven and probable reserves.

As of September 30, 2012, except for our 49% interest in the San José Mine, development costs are not capitalized at any of our properties, as no proven and probable reserves exist.

Property and Equipment — Expenditures for new facilities or equipment and expenditures that extend the useful lives of existing facilities or equipment are capitalized and recorded at cost.  Depreciation is computed using straight-line methods. Office furniture, equipment and light vehicles are being depreciated over the estimated economic lives ranging from 3 to 5 years.  Trailers, heavy vehicles and other site equipment are being depreciated over estimated economic lives from 5 to 15 years. Buildings are being depreciated over an estimated economic life of 20 years.  All mining equipment is depreciated using the units-of-production method based upon estimated proven and probable reserves.

Impairment of Long-Lived Assets — We review and evaluate our long-lived assets for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable.  Recoverability is measured by comparing the net book value to fair value. When the net book value exceeds fair value, an impairment loss is measured and recorded.  Mineral properties are monitored for impairment based on factors such as our continued right to explore the area, exploration reports, assays, technical reports, drill results and its continued plans to fund exploration programs on the property.  We use the market approach to estimate the fair value of the properties by using a combination of the observed market value per square mile in the region and an observed market value per ounce of mineralized material.  We are unable to estimate undiscounted future net cash flows from its operations due to the absence of proven and probable reserves.  As such, the appropriate evidence to perform estimates of future cash flows is not available and may not be accurate in supporting the Company’s long-lived assets.  For purposes of recognition and measurement of an impairment loss, we group our properties by geological mineral complex, as this represents the lowest level at which we allocate our exploration spending independent of other assets and liabilities.  For the recently acquired Santa Cruz exploration properties, we have separated our properties into two regions, due to their physical separation, for the purposes of impairment testing. The two regions are Cerro Negro and Other Santa Cruz exploration properties.

Forward-Looking Statements

This report contains or incorporates by reference “forward-looking statements,” as that term is used in federal securities laws, about our financial condition, results of operations and business.  These statements include, among others:

·statements about our anticipated exploration results and plans for the development of our properties;

·statements concerning the benefits that we expect will result from our business activities and certain transactions that we contemplate or have completed, such as receipt of proceeds, increased revenues, decreased expenses and avoided expenses and expenditures; and

·statements of our expectations, beliefs, future plans and strategies, anticipated developments and other matters that are not historical facts.

These statements may be made expressly in this document or may be incorporated by reference to other documents that we will file with the SEC.  You can find many of these statements by looking for words such as “believes,” “expects,” “anticipates,” “estimates” or similar expressions used in this report or incorporated by reference in this report.

Forward-looking statements and information are necessarily based upon a number of estimates and assumptions that, while considered reasonable by management, are inherently subject to significant business, economic and competitive uncertainties, risks and contingencies, and there can be no assurance that such statements and information will prove to be accurate. Therefore, actual results and future events could differ materially from those anticipated in such statements and information. We caution you not to put undue reliance on these statements, which speak only as of the date of this report.  Further, the information contained in this document or incorporated herein by reference is a statement of our present intention and is based on present facts and assumptions, and may change at any

38

time and without notice, based on changes in such facts or assumptions. Readers should not place undue reliance on forward-looking statements.

Risk Factors Impacting Forward-Looking Statements

The important factors that could prevent us from achieving our stated goals and objectives include, but are not limited to, those set forth in other reports we have filed with the SEC and the following:

·decisions of foreign countries and banks within those countries;

·unexpected changes in business and economic conditions;

·results of MSC;

·fluctuations in interest rates, currency exchange rates, or commodity prices;

·timing and amount of mine production;

·technological changes in the mining industry;

·changes in operating, exploration or overhead costs;

·access and availability of materials, equipment, supplies, labor and supervision, power and water;

·results of current and future exploration activities;

·our ability to secure permits needed to explore our mineral properties or develop our projects;

·results of pending and future feasibility studies;

·changes in our business strategy;

·interpretation of drill hole results and the geology, grade and continuity of mineralization;

·the uncertainty of reserve estimates and timing of development expenditures;

·litigation affecting us;

·local and community impacts and issues including criminal activity and violent crimes; and

·accidents and labor disputes.

We undertake no responsibility or obligation to update publicly these forward-looking statements, except as required by law and may update these statements in the future in written or oral statements.  Investors should take note of any future statements made by or on our behalf.

Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

Our exposure to market risks includes, but is not limited to, the following risks: changes in foreign currency exchange rates, changes in interest rates, equity price risks, commodity price fluctuations and country risk. We do not use derivative financial instruments as part of an overall strategy to manage market risk.

Foreign Currency Risk

While we transact most of our business in US dollars, some expenses, labor, operating supplies and property and equipment are denominated in Canadian dollars, Mexican pesos or Argentine pesos. As a result, currency exchange fluctuations may impact our operating costs. The appreciation of non-US dollar currencies against the US dollar increases costs and the cost of purchasing property and equipment in US dollar terms in Canada, Mexico and Argentina, which can adversely impact our operating results and cash flows. Conversely, a depreciation of non-US dollar currencies usually decreases operating costs and property and equipment purchases in US dollar terms in foreign countries.

The value of cash and cash equivalents denominated in foreign currencies also fluctuates with changes in currency exchange rates. Appreciation of non-US dollar currencies results in a foreign currency gain on such investments and a decrease in non-US dollar currencies results in a loss. We have not utilized market risk sensitive instruments to manage

39

our exposure to foreign currency exchange rates but may in the future actively manage our exposure to foreign currency exchange rate risk. We also hold portions of our cash reserves in non-US dollar currencies.  Based on our Canadian cash balance of $1.4 million at September 30, 2012, a 1% change in the Canadian dollar would have minimal impact in the statement of operations.

Interest Rate Risk

We have no debt outstanding nor do we have any investment in debt instruments other than highly liquid short-term investments. Accordingly, we consider our interest rate risk exposure to be insignificant at this time.

Equity Price Risk

We have in the past sought and will likely in the future seek to acquire additional funding by sale of common stock.  Movements in the price of our common stock have been volatile in the past and may also be volatile in the future. As a result, there is a risk that we may not be able to sell common stock at an acceptable price to meet future funding requirements.

Commodity Price Risk

We own a 49% interest in the San José Mine, an operating silver-gold mine in Santa Cruz, Argentina, and we have commenced production of gold and silver from our 100% owned El Gallo Complex.  As a result, changes in the price of gold and silver could significantly affect our results of operations and cash flows in the future.  We also hold a portion of our treasury in gold and silver bullion, which is recorded at the lower of cost or market.  Gold and silver prices may fluctuate widely from time to time.  Based on our gold and silver holdings of $1.7 million at September 30, 2012, a 10% reduction in the price of gold and silver would decrease our working capital by approximately $0.2 million.  At September 30, 2012, our gold and silver bullion had a combined fair value of $2.3 million.

Credit Risk

We may be exposed to credit loss through our doré sales agreements with Canadian financial institutions if these institutions are unable to make payment in accordance with the terms of the agreement. We do not anticipate any of the financial institutions to default on their obligation. As of September 30, 2012 we did not have any significant credit exposure associated with our doré sales agreements.

In Mexico, we are exposed to credit loss regarding our IVA taxes receivable, whereby the Mexican tax authorities are unable to make payments in accordance with our monthly filings. Collection time on IVA receivable is uncertain. The risk is mitigated to the extent that the IVA receivable balance can be applied to future taxes payable. However, at this time we are uncertain when our Mexican operations will generate sufficient taxable operating profits to offset this receivable against taxes payable. As at September 30, 2012, we continue to face credit risk on the collection of our IVA receivables.

Foreign Country Risk

Our El Gallo Project and certain other concessions are located in Mexico, and are subject to Mexican federal and state laws and regulations.  As a result, our mining investments are subject to the risks normally associated with the conduct of business in foreign countries.  In the past, Mexico has been subject to political instability, changes and uncertainties which may cause changes to existing government regulations affecting mineral exploration and mining activities.  Civil or political unrest or violence could disrupt our operations at any time.  In 2012, there continues to be a high level of violence and crime relating to drug cartels in Sinaloa state, where we operate, and in other regions of Mexico.  This may disrupt our ability to carry out exploration and mining activities and affect the safety and security of our employees and contractors.  Our exploration and mining activities may be adversely affected in varying degrees by changing government regulations relating to the mining industry or shifts in political conditions that could increase the costs related to our activities or maintaining our properties.  Presidential and congressional elections were held in July 2012 with Enrique Pena Nieto from the Institutional Revolutionary Party (PRI) winning the presidency and the PRI winning the most seats but failing to win a majority in Congress.  The new president takes office in December.  It is indeterminate what effect, if any, these political changes will have on our ability to operate in Mexico.

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We also have material properties located in Argentina.  There are risks relating to an uncertain or unpredictable political and economic environment in Argentina.  During an economic crisis in 2002 and 2003, Argentina defaulted on foreign debt repayments and on the repayment on a number of official loans to multinational organizations.  In addition, the Argentinean government has renegotiated or defaulted on contractual arrangements.  In January 2008, the Argentinean government reassessed its policy and practice in respect of export duties and began levying export duties on mining companies operating in the country.  Although this particular change did not affect MSC as their fiscal stability agreement explicitly fixes export duties at 5% for doré bars and 10% for concentrates, there can be no assurance that the Argentinean government will not unilaterally take other action which could have a material adverse effect on our interests in Argentina, including in particular the San José Mine.  In October 2011, Argentina announced a decree requiring mining companies to repatriate mining revenues to Argentine currency before distributing revenue either locally or overseas.  MSC estimated that this would result in an additional $2 million in its annual pre-tax operating expenses (on a 100% basis) as a result of the increased foreign exchange and bank transaction costs caused by the issuance of this decree.  In April 2012, the government of Argentina and their central bank announced further rules which initially reduced the number of days mining companies have to repatriate funds to 15 days and then subsequently in July 2012, relaxed the repatriation requirement to 45 days on the sale of doré and 180 days on the sale of concentrates for certain mining companies including MSC.  During this interim period of uncertainty, there was a disruption to MSC’s exports, especially concentrate sales which take significantly longer than doré to process.  In April 2012, Argentina’s President announced the nationalization of the majority stake of Yacimientos Petrolíferos Fiscales (YPF), Argentina’s largest oil company.  Other unanticipated changes by the Argentinean government could negatively impact the profitability of the San José Mine or affect our ability to explore or develop our Los Azules project or other exploration properties in Argentina.  Political and economic events such as acts, or failures to act, by a government authority in Argentina, and acts of political violence in Argentina, could have a material adverse effect on our ability to operate.

Item 4. CONTROLS AND PROCEDURES

(a)We maintain a system of controls and procedures designed to ensure that information required to be disclosed by us in reports that we file or submit under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported, within time periods specified in the SEC’s rules and forms and to ensure that information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934, as amended, is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.  As of September 30, 2012, under the supervision and with the participation of our Chief Executive Officer and Principal Financial Officer, management has evaluated the effectiveness of the design and operation of our disclosure controls and procedures.  Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective.

(b)Changes in Internal Controls.  There were no changes in our internal control over financial reporting during the quarter ended September 30, 2012 that materially affected or are reasonably likely to materially affect, our internal controls over financial reporting.  On January 25, 2012, we completed the acquisition of Minera Andes Inc. and since that date, have been integrating its then-existing information systems and internal control over financial reporting into our systems.   We expect to include Minera Andes in our assessment of the effectiveness, as of December 31, 2012, of our internal control over financial reporting, as required by Rule 13a-15 of the Securities Exchange Act of 1934, as amended.

PART II

Item 1. LEGAL PROCEEDINGS

The Los Azules properties are located in the high Andes within the San Juan region of Argentina. Minera Andes, a wholly-owned subsidiary of McEwen Mining, has held exploration and mineral exploitation rights to properties in the Los Azules region (the “Minera Andes Properties”) since the late 1990s.  In the early 2000s, the exploration and exploitation rights to the properties north of the Minera Andes Properties (the “Solitario Properties”) were held by Solitario, a wholly-owned subsidiary of TNR Gold, a junior mining company based in Vancouver, British Columbia, Canada.

The Los Azules litigation was commenced in the Supreme Court of British Columbia, Canada as follows:

TNR Gold Corp. and Solitario Argentina S.A. [Plaintiffs] v. MIM Argentina Exploraciones S.A., Minera Andes Inc., Minera Andes S.A., Los Azules Mining Inc. and Andes Corporacion Minera S.A. [Defendants]  (Court File No. S-084670, Vancouver Registry).  This proceeding was initiated on June 30, 2008 and Minera Andes was joined as a Defendant in this proceeding in September 2010.  The foregoing proceeding was consolidated in April 2012 with Minera

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Andes S.A., Minera Andes Inc., Los Azules Mining Inc. and Andes Corporacion Minera S.A. [Plaintiffs] v. TNR Gold Corporacion and Solitario Argentina S.A. [Defendants] (Court File No. VLC-S-S-102992) initiated April 1, 2010.

While the proceedings were commenced separately, these proceedings have been consolidated, and the pleadings amended, so that all issues will be heard together under a newly assigned case management judge anticipated to be in November 2012.  The following is a non-exhaustive summary of the claims made by the plaintiffs in respect of these actions.

There are essentially four issues raised by the Los Azules litigation which can be generally described as follows:

a)The Expenditure Requirement Issue. Whether or not Xstrata Copper made the development expenditures required for the proper exercise of the option agreement between Xstrata and Solitario (the “Xstrata-Solitario Option Agreement”), whether or not Minera Andes or its subsidiaries engaged in intentional interference with economic relations pertaining to those expenditures, and what remedies, if any, flow as a result. TNR asks, among other things, for an order that the Solitario Properties be conveyed to it;

b)The Back-in Right Issue. Whether or not Solitario has a contractual ‘back-in’ right to purchase a 25% equity position in the Solitario Properties currently owned by Minera Andes pursuant to the Xstrata-Solitario Option Agreement or as that Agreement may be rectified by the court. If a ‘back-in’ right exists and it cannot be performed, TNR seeks damages;

c)The Waiver Issue. Whether TNR can waive the requirement that a feasibility study be completed prior to its having the right to ‘back in’ to 25% of the equity of the Solitario Properties. If the requirement for a feasibility study could be waived, but the ‘back-in’ right can no longer be performed, TNR seeks damages as an alternative remedy. Otherwise, TNR seeks performance of the ‘back-in’ right; and

d)The Escorpio IV Issue. Whether or not a certain property described as ‘Escorpio IV’ was included in the property optioned by Xstrata under the Xstrata-Solitario Option Agreement.

The following is a summary of the Los Azules dispute:

·The Los Azules project was, until the fall of 2009, subject to an option agreement between Xstrata and Minera Andes.

·In the fall of 2009, Xstrata elected not to exercise its option to back-in to the Solitario Properties and subsequently transferred all properties then held by Xstrata (and forming part of the Los Azules project) to Minera Andes.  Minera Andes is now of the position that it owns 100% of the Los Azules project including the Solitario Properties.

·The Solitario Properties formerly held by Xstrata and transferred to Minera Andes following the termination of the option agreement remain subject to the Xstrata-Solitario Option Agreement.

·The Xstrata-Solitario Option Agreement provided that Solitario had the right to back-in up to 25% of the Solitario Properties, exercisable by Solitario upon the satisfaction of certain conditions within 36 months of Xstrata exercising its option, including the completion of a feasibility study. The 36-month time limit was not included in an earlier letter of intent which precedes the Xstrata-Solitario Option Agreement.

·The 36-month period following the exercise of the option expired on April 23, 2010 and no feasibility study had been completed on the Los Azules project and Minera Andes is of the position that Solitario’s back-in right also expired on April 23, 2010.

·Expenditure Requirement Claim. As a condition of exercising the option under the Xstrata-Solitario Option Agreement, Xstrata was required to make five option payments over a five-year period. In addition, Xstrata was also required to spend a total of $1 million in exploration expenditures in respect of the Solitario Properties. TNR now disputes that the expenditure obligation had been met and, therefore, that the option was properly exercised.

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In May 2011, TNR was granted leave by the Supreme Court of British Columbia to amend its pleadings to include a new cause of action related to whether Xstrata met the expenditure requirements under the Xstrata-Solitario Option Agreement so as to properly exercise the option over the Solitario Properties on April 23, 2007. More specifically, TNR claims that Xstrata never incurred the necessary expenditures to entitle it to exercise the option because some of the expenditures, particularly those related to drilling activity were not located on the Solitario Properties, but instead were located on the property to the south.  Minera Andes rejects TNR’s claim that insufficient expenditures were made. As part of this claim, TNR seeks the following relief:

·A declaration that the exercise of the option by Xstrata was a nullity;

·A constructive trust in favor of Solitario as constructive trustee over the Solitario Properties;

·An order that Minera Andes take all necessary steps to transfer ownership of the Solitario Properties to Solitario; and

·Damages against Minera Andes for breach of contract and intentional interference with Solitario’s economic relations.

·Back-In Claim. TNR amended its claim in August 2008 to assert that the above back-in right is not subject to the 36-month timeline that appears in the executed Xstrata-Solitario Option Agreement. In fact, TNR claims the 36-month limit was never the commercial intention of the parties as the 36-month limit was not included in the original letter of understanding between the parties which was subsequently superseded by the formal Xstrata-Solitario Option Agreement.  In particular, TNR claims that the 36-month requirement was added by Xstrata, overlooked by TNR (and its lawyers) and not discovered until November 2007, all while Xstrata made payments on their option. As part of this claim, TNR seeks:

·rectification of the Xstrata-Solitario Option Agreement to make the back-in right accord with the letter of understanding; a declaration that such rectification is enforceable as against Minera Andes;

·a declaration that the 36-month restriction is unenforceable for want of consideration;

·damages for breach of the implied term that Xstrata, and later Minera Andes, would exercise best-efforts to complete a feasibility study within 36 months of Xstrata exercising its option; and

·a declaration that Solitario is entitled to waive completion of a feasibility study and that its April 23, 2010 back-in notice is valid and enforceable.

·Waiver Claim. In addition, on April 23, 2010, Solitario delivered notice of exercise of the back-in right and waiver of the condition of the completion of the feasibility study and claimed that it had the right to back-in to the Solitario Properties prior to the expiry of the option period on the basis that they could waive the requirement that a feasibility study be completed.

·Escorpio IV Claim. TNR filed a claim on June 30, 2008 in relation to the ongoing unresolved claim against Xstrata as to whether or not Escorpio IV is included in the properties subject to the Xstrata-Solitario Option Agreement. Minera Andes has publicly disclosed that the current resource estimates for the Los Azules project are not located on Escorpio IV, and that the current intention is to locate certain mine infrastructure on Escorpio IV. Minera Andes is currently entitled to the surface rights in respect of Escorpio IV. TNR is of the position that Escorpio IV is not part of the Xstrata-Solitario Option Agreement and that it has retained ownership of this claim.

If TNR is successful in any of its claims against Minera Andes, this could have a significant and material negative impact on the ability of McEwen Mining to further develop or realize on the value of the Los Azules Project.

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Item 6.  EXHIBITS

The following exhibits are filed or furnished with this report:

31.1	Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 for Robert R. McEwen.
31.2	Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 for Perry Y. Ing.
32	Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 for Robert R. McEwen and Perry Y. Ing.
101	The following materials from McEwen Mining Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 are furnished herewith, formatted in XBRL (Extensible Business Reporting Language): (i) the Unaudited Consolidated Statements of Operations and Comprehensive Loss for the Three and Nine Months Ended September 30, 2012 and 2011, (ii) the Consolidated Balance Sheets as of September 30, 2012 (Unaudited) and December 31, 2011, (iii) the Unaudited Consolidated Statement of Changes in Shareholder’s Equity for the Three and Nine Months Ended September 30, 2012 and 2011, (iv) the Unaudited Consolidated Statements of Cash Flows for the Three and Nine Months Ended September 30, 2012 and 2011, and (v) the Unaudited Notes to the Consolidated Financial Statements.

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SIGNATURES

In accordance with Section 13 or 15(d) of the Securities Exchange Act of 1934, the Company caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

	MCEWEN MINING INC.
	/s/ Robert R. McEwen
Dated: November 7, 2012	By Robert R. McEwen, Chairman
	and Chief Executive Officer
	/s/ Perry Y. Ing
Dated: November 7, 2012	By Perry Y. Ing, Vice President and
	Chief Financial Officer

45

EX-31.1

Exhibit 31.1

CERTIFICATION
Pursuant to Section 302 of the
Sarbanes-Oxley Act of 2002

I, ROBERT R. MCEWEN, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of McEwen Mining Inc. for the quarter ended September 30, 2012;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: November 7, 2012
	/s/ Robert R. McEwen
	Robert R. McEwen, Chairman and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION
Pursuant to Section 302 of the
Sarbanes-Oxley Act of 2002

I, PERRY Y. ING, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of McEwen Mining Inc. for the quarter ended September 30, 2012;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: November 7, 2012
	/s/ Perry Y. Ing
	Perry Ing, Vice President and Chief
	Financial Officer

EX-32

Exhibit 32

CERTIFICATION
Pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of McEwen Mining Inc., a Colorado corporation (the “Company”) for the quarter ended September 30, 2012 as filed with the Securities and Exchange Commission (the “Report”), each of the undersigned officers of the Company does hereby certify pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 that to the best of our knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: November 7, 2012
	MCEWEN MINING INC.
	/s/ Robert R. McEwen
	Robert R. McEwen, Chairman and Chief
	Executive Officer
	/s/ Perry Y. Ing
	Perry Ing, Vice President and
	Chief Financial Officer

XML

MARKETABLE EQUITY SECURITIES (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
MARKETABLE EQUITY SECURITIES
Impairment of available for sale securities	$ 1,993
Changes in the entity's holdings of marketable securities
Opening Balance	1,480	4,576	4,576
Purchases		284	284
Proceeds from sale	(409)	(1,854)	(1,853)
Gain on sale			19
Unrealized loss	(2)		(1,546)
Realized loss	(1,063)
Ending Balance	$ 6		$ 1,480

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STOCK-BASED COMPENSATION (Details 2)	9 Months Ended
	Sep. 30, 2012 $0.00-$2.00 McEwen Mining USD ($)	Sep. 30, 2012 $2.01-$4.00 McEwen Mining USD ($)	Sep. 30, 2012 $4.01-$6.00 McEwen Mining USD ($)	Sep. 30, 2012 $6.01-$8.31 McEwen Mining USD ($)	Sep. 30, 2012 C$0.00-C$5.00 Nevada Pacific Gold Ltd. CAD	Sep. 30, 2012 C$5.01-C$6.70 Nevada Pacific Gold Ltd. CAD	Sep. 30, 2012 C$0.00-C$2.22 Minera Andes CAD	Sep. 30, 2012 C$2.23-C$3.02 Minera Andes CAD
Stock options outstanding and exercisable
Range of Exercise Price, low end of range (in dollars per share)	$ 0.00	$ 2.01	$ 4.01	$ 6.01	0.00	5.01	0.00	2.23
Range of Exercise Price, high end of range (in dollars per share)	$ 2.00	$ 4.00	$ 6.00	$ 8.31	5.00	6.70	2.22	3.02
Options Outstanding
Number Outstanding	1,339,000	1,030,800	366,500	886,333	271,543	123,050	220,500	525,150
Weighted Average Exercise Price (in dollars per share)	$ 1.05	$ 2.57	$ 5.66	$ 7.17	4.54	5.96	1.67	2.40
Weighted Average Remaining Contractual Life	6 years 2 months 8 days	6 years 18 days	8 years 5 months 26 days	8 years 2 months 8 days	3 years 6 months 4 days	2 years 3 months 4 days	1 year 3 months 29 days	2 years 3 months 22 days
Options Exercisable
Number Exercisable	1,339,000	827,467	66,500	331,664	271,543	123,050	220,500	377,101
Weighted Average Exercise Price (in dollars per share)	$ 1.05	$ 2.59	$ 5.01	$ 7.28	4.54	5.96	1.67	2.45
Weighted Average Remaining Contractual Life	6 years 2 months 8 days	5 years 8 months 23 days	4 years 8 months 12 days	7 years 8 months 26 days	3 years 6 months 4 days	2 years 3 months 4 days	1 year 3 months 29 days	2 years 2 months 8 days

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SHAREHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended				1 Months Ended	9 Months Ended			1 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jan. 19, 2012	Dec. 31, 2011	Jan. 31, 2012 Minera Andes	Sep. 30, 2012 Minera Andes	Sep. 30, 2012 Minera Andes Minimum	Sep. 30, 2012 Minera Andes Maximum	May 31, 2012 2007 Acquisitions	Jan. 19, 2012 Series B Special Voting Preferred Stock
Common stock, shares authorized	500,000,000		500,000,000	500,000,000
Preferred stock, shares authorized										1
Issuance of 2012 Exchangeable Shares in connection with the acquisition of Minera Andes					127,331,498
Exchangeable shares converted into common stock	51,600,000					48,400,000			2,500,000
Outstanding exchangeable shares not exchanged	78,900,000
Shares of common stock issued	1,300,000								2,500,000
Exercise price of stock options (in dollars per share)							$ 0.91	$ 3.35
Proceeds from exercise of stock options	$ 3,564	$ 773				$ 3,600
Shares of common stock issued as part payment for mining concessions in Mexico	83,000

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	9 Months Ended
	Sep. 30, 2012	Jan. 24, 2012 MSC	Jan. 24, 2012 Minera Andes MSC	Jan. 24, 2012 Minera Andes Los Azules Copper Deposit
Nature of Operations and Basis of Presentation
Period for determining current portion of ore stockpiles	12 months
Period within which ore stockpile inventories are not expected to be processed, classified as long-term	12 months
Interest acquired (as a percent)		49.00%	49.00%	100.00%

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GOLD AND SILVER BULLION (Tables)

9 Months Ended

Sep. 30, 2012

GOLD AND SILVER BULLION

Schedule of gold and silver holdings

	September 30, 2012				December 31, 2011
	Gold		Silver		Gold		Silver
	(dollars in thousands, except ounces and per ounce)
# of ounces	793		24,969		5,656		552,812
Average cost per ounce	$	1,278.63	$	27.08	$	1,278.63	$	28.18
Total cost	$	1,014	$	676	$	7,232	$	15,578
Fair value per ounce	$	1,776.00	$	34.65	$	1,574.50	$	28.18
Total fair value	$	1,408	$	865	$	8,905	$	15,578

Schedule of changes of gold and silver holdings

Changes in the Company’s holdings of gold and silver for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended September 30, 2012									Year Ended December 31, 2011
	Gold			Silver			Total			Gold			Silver			Total
Opening Balance	$	7,232		$	15,578		$	22,810		$	4,569		$	—		$	4,569
Purchases	—			—			—			7,387			23,912			31,299
Proceeds from sale	(7,982		)	(15,854		)	(23,836		)	(6,218		)	(5,521		)	(11,739		)
Gain on sale	1,764			1,311			3,075			1,494			581			2,075
Unrealized loss	—			(359		)	(359		)	—			(3,394		)	(3,394		)
Ending Balance	$	1,014		$	676		$	1,690		$	7,232		$	15,578		$	22,810

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OPERATING SEGMENT REPORTING (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
OPERATING SEGMENT REPORTING
Income on investment in Minera Santa Cruz S.A.	$ 11,311		$ 14,759
Gold and silver sales	456		456
Production costs applicable to sales	119		119
Exploration costs	6,708	15,115	28,565	32,650
Mine construction costs	4,671		13,306
Mine development and operating costs	2,406		8,622
Operating income (loss)	(10,554)	(21,239)	(56,817)	(44,124)
Investment in Minera Santa Cruz S.A.	271,180		271,180
Mineral property interests	785,278		785,278		245,454
Total assets	1,111,205		1,111,205		310,355
Argentina
OPERATING SEGMENT REPORTING
Income on investment in Minera Santa Cruz S.A.	11,311		14,759
Exploration costs	1,539		11,369
Operating income (loss)	9,200		1,231
Investment in Minera Santa Cruz S.A.	271,180		271,180
Mineral property interests	541,702		541,702
Total assets	831,129		831,129
Mexico
OPERATING SEGMENT REPORTING
Gold and silver sales	456		456
Production costs applicable to sales	119		119
Exploration costs	3,847	10,822	12,394	22,846
Mine construction costs	4,671		13,306
Mine development and operating costs	2,406		8,622
Operating income (loss)	(12,650)	(12,196)	(38,733)	(25,728)
Mineral property interests	14,050		14,050		12,750
Total assets	42,717		42,717		33,899
U.S.
OPERATING SEGMENT REPORTING
Exploration costs	999	4,114	3,905	9,066
Operating income (loss)	(4,234)	(5,736)	(7,864)	(11,710)
Mineral property interests	229,526		229,526		232,704
Total assets	234,804		234,804		238,402
Corporate & Other
OPERATING SEGMENT REPORTING
Exploration costs	323	179	897	738
Operating income (loss)	(2,870)	(3,307)	(11,451)	(6,686)
Total assets	$ 2,555		$ 2,555		$ 38,054

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MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended	9 Months Ended					9 Months Ended											9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 Gold item	Sep. 30, 2012 Tonkin Complex	Sep. 30, 2012 Gold Bar Complex	Sep. 30, 2012 Limo Complex	Sep. 30, 2012 Battle Mountain Complex	Sep. 30, 2012 Other United States Properties item	Dec. 31, 2007 Other United States Properties	Sep. 30, 2012 Los Azules Copper Project	Sep. 30, 2012 Other Argentina exploration properties in San Juan, Argentina	Sep. 30, 2012 Cerro Negro Region	Sep. 30, 2012 Other Argentina exploration properties in Santa Cruz, Argentina	Sep. 30, 2012 Other Argentina exploration properties in Catamarca, Argentina	Sep. 30, 2012 Other Argentina exploration properties in Chubut, Argentina	Sep. 30, 2012 El Gallo Complex	Sep. 30, 2012 Other Mexico Exploration Properties in Sinaloa, Mexico	Sep. 30, 2012 Tonkin property and Magistral mine portion of the El Gallo Complex item	Sep. 30, 2012 Minera Andes	Jan. 24, 2012 Minera Andes
MINERAL PROPERTY INTERESTS
Quantity produced (in ounces)						298
Number of claims allowed from Nevada properties											3
Reduction in the deferred tax liability and recovery of future income taxes											$ 1,000,000
Property written-off											1,900,000
Total	785,278,000		785,278,000		245,454,000		52,204,000	77,012,000	50,098,000	31,106,000	19,107,000	2,900,000	431,190,000	7,819,000	80,889,000	19,194,000	2,362,000	248,000	9,469,000	4,580,000
Mineral property interests																							541,702,000
Increase in mineral property interests since acquisition			539,800,000																			541,700,000
Number of most significant properties subject to reclamation obligations																					2
Undiscounted estimated reclamation costs							3,000,000												4,600,000
Cash bonding for mineral properties in the United States	5,190,000		5,190,000		5,190,000
Changes in the asset retirement obligations
Asset retirement obligation liability - opening balance			6,253,000	6,153,000	6,153,000
Settlements			(24,000)		(82,000)
Accretion of liability	110,000	134,000	342,000	400,000	524,000
Adjustment reflecting updated estimates			(79,000)		(342,000)
Asset retirement obligation liability - ending balance	6,492,000		6,492,000		6,253,000
Current portion of the asset retirement obligation	$ 323,000		$ 323,000		$ 512,000

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BUSINESS ACQUISITION (Details) (Minera Andes, USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended	3 Months Ended		1 Months Ended
	Jan. 31, 2012	Sep. 30, 2012	Jan. 31, 2012 Replacement options	Sep. 30, 2012 Replacement options	Jun. 30, 2011 Robert R. McEwen	Sep. 30, 2012 Robert R. McEwen	Jan. 31, 2012 McEwen Mining
BUSINESS ACQUISITION
Exchange ratio	0.45
2012 Exchangeable Shares received by shareholders of acquiree	127,331,498				38,700,000
Shareholding of combined company (as a percent)	48.00%						52.00%
Shareholding of combined company on a diluted basis (as a percent)	47.00%						53.00%
Percentage of shares of the company owned						25.10%
Ratio for exchange of 2012 exchangeable shares		1
Estimated fair value of the vested portion of the replacement options				$ 3.2
Principal assumptions used in applying the Black-Scholes option pricing model
Risk-free interest rate, low end of range (as a percent)			0.02%
Risk-free interest rate, high end of range (as a percent)			0.39%
Volatility factor of the expected market price of common stock, low end of range (as a percent)			46.00%
Volatility factor of the expected market price of common stock, high end of range (as a percent)			77.00%
Weighted-average expected life of option			1 year 4 months 24 days

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SUBSEQUENT EVENT (Details) In Millions, except Share data, unless otherwise specified				9 Months Ended
	Jan. 24, 2012 USD ($)	Oct. 29, 2012 Subsequent event USD ($)	Oct. 29, 2012 Subsequent event CAD	Sep. 30, 2012 Subsequent event Scenario, Forecast USD ($)
Subsequent Event
Share Price	$ 5.22	$ 2.25	2.24
Percentage of Discount to Closing Share Price				50.00%
Number of Rights in Each Common Stock Share		1	1
Number of Rights Required to Purchase Additional Share		10	10
Proceeds from Issuance or Sale of Equity				$ 60

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STOCK-BASED COMPENSATION (Details) (USD $) In Millions, except Per Share data, unless otherwise specified		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Jan. 19, 2012	Sep. 30, 2012 Stock Options	Sep. 30, 2011 Stock Options	Sep. 30, 2012 Stock Options Oz	Sep. 30, 2011 Stock Options Oz	Sep. 30, 2012 Minera Andes Stock Options	Sep. 30, 2012 Minera Andes Stock Options	Sep. 30, 2012 Chief Operating Officer	Sep. 30, 2011 Certain employees, directors and consultants
STOCK-BASED COMPENSATION
Number of shares of common stock reserved for issuance before amendment	9
Number of shares of common stock reserved for issuance	13.5
Stock options granted (in shares)								0.3	0.9
Exercise price of options granted (in dollars per share)								$ 5.80	$ 7.10
Vesting period of options									3 years
Exercise period of options									10 years
Stock option expense		$ 0.7	$ 0.7	$ 2.8	$ 1.9	$ 0.1	$ 1.1
Principal assumptions used in applying the Black-Scholes option pricing model for the awards
Risk-free interest rate (as a percent)				0.97%
Risk-free interest rate, low end of range (as a percent)					1.82%
Risk-free interest rate, high end of range (as a percent)					2.33%
Volatility factor of the expected market price of common stock (as a percent)				75.00%
Volatility factor of the expected market price of common stock, low end of range (as a percent)					90.00%
Volatility factor of the expected market price of common stock, high end of range (as a percent)					100.00%
Weighted-average expected life of option				6 years	6 years 7 months 6 days
Weighted-average grant date fair value (in dollars per share)				3.80	4.97

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MARKETABLE EQUITY SECURITIES

9 Months Ended

Sep. 30, 2012

MARKETABLE EQUITY SECURITIES

MARKETABLE EQUITY SECURITIES

NOTE 3   MARKETABLE EQUITY SECURITIES

These securities are valued at fair value.  Any resulting gain or loss is recorded to an unrealized gain and loss account (accumulated other comprehensive loss) that is reported as a separate line item in the shareholders’ equity section of the balance sheet.  The gains and losses on available-for-sale securities are not reported on the statement of operations until the securities are sold or are other-than-temporarily impaired.  During the second quarter of 2012, the Company did not intend to hold these securities for a period of time sufficient to allow for any anticipated recovery in fair value and consequently, the Company deemed most of its securities to be other-than-temporarily impaired and recorded an impairment of $2.0 million in the statement of operations and comprehensive loss for the period.    These securities were sold during the third quarter of 2012.

Changes in the Company’s holdings of marketable securities for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended September 30,			Year Ended December 31,
	2012			2011
Opening Balance	$	1,480		$	4,576
Purchases	—			284
Proceeds from sale	(409		)	(1,853		)
Gain on sale	—			19
Unrealized loss	(2		)	(1,546		)
Realized loss	(1,063		)	—
Ending Balance	$	6		$	1,480

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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE (Details) (MSC, USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2012	Sep. 30, 2012	Sep. 30, 2012
Change in investment
Fair value of investment in MSC from acquisition of Minera Andes	$ 261,186				$ 261,186	$ 261,186
Amortization of fair value increments	(1,597)	1,259	890	2,149		(3,746)
Net loss	26,343	(20,707)	(16,997)	(37,995)	37,765
Reported
Change in investment
Amortization of fair value increments		1,803	2,804	4,607
Net loss		(21,251)	(19,202)	(40,453)
Adjustment
Change in investment
Amortization of fair value increments		(544)	(1,914)	(2,458)
Net loss		544	1,914	2,458
Purchase price allocation adjustment
Change in investment
Fair value of investment in MSC from acquisition of Minera Andes	$ 261,200	$ 225,000	$ 225,000	$ 225,000	$ 261,200	$ 261,200

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PROPERTY AND EQUIPMENT (Tables)

9 Months Ended

Sep. 30, 2012

PROPERTY AND EQUIPMENT

Schedule of property and equipment

At September 30, 2012 and December 31, 2011, property and equipment consisted of the following (in thousands):

	September 30, 2012			December 31, 2011
Trucks and trailers	$	1,417		$	1,247
Office furniture and equipment	1,054			638
Drill rigs	1,869			998
Building	1,469			853
Land	8,669			8,619
Mining equipment	1,026			956
Inactive milling equipment	644			778
Subtotal	$	16,148		$	14,089
Less: accumulated depreciation	(2,665		)	(2,317		)
Total	$	13,483		$	11,772

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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE (Tables)

9 Months Ended

Sep. 30, 2012

INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE

Schedule of reconciliation of fair value allocation

	For three months ended			For three months ended			For the six months ended
	March 31, 2012			June 30, 2012			June 30, 2012
	(in thousands)
Amortization of fair value increments, as reported	$	2,804		$	1,803		$	4,607
Adjustment	(1,914		)	(544		)	(2,458		)
Amortization of fair value increments, as adjusted	$	890		$	1,259		$	2,149
Net loss, as reported	$	(19,202	)	$	(21,251	)	$	(40,453	)
Adjustment	1,914			544			2,458
Net loss, as adjusted	$	(17,288	)	$	(20,707	)	$	(37,995	)

Schedule of change in the entity's investment in MSC

	As at
	September 30, 2012
	(in thousands)
Investment in MSC, beginning of period	$	—
Fair value of investment in MSC from acquisition of Minera Andes	261,186
Income from equity investment	18,505
Amortization of fair value increments	(3,746		)
Dividends	(4,765		)
Investment in MSC, end of period	$	271,180

Summary of MSC's financial information from operations

	Three Months Ended			Period Ended
	September 30, 2012			September 30, 2012
	(in thousands)			(in thousands)
Summary of MSC’s financial information from operations
Sales - MSC 100%	$	116,299		$	212,902
Net income - MSC 100%	26,343			37,765
McEwen Mining’s portion - 49%	12,908			18,505
Income on investment in MSC	$	12,908		$	18,505
Amortization of fair value increments	(1,597		)	(3,746		)
Income on investment in MSC, net of amortization	$	11,311		$	14,759

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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE (Details 2)	3 Months Ended	9 Months Ended		3 Months Ended			6 Months Ended	8 Months Ended	9 Months Ended		1 Months Ended				3 Months Ended	8 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2012 USD ($)	Dec. 31, 2011 USD ($)	Sep. 30, 2012 MSC USD ($)	Jun. 30, 2012 MSC USD ($)	Mar. 31, 2012 MSC USD ($)	Jun. 30, 2012 MSC USD ($)	Sep. 30, 2012 MSC USD ($)	Sep. 30, 2012 MSC USD ($)	Jan. 24, 2012 MSC	Jul. 31, 2012 MSC Dividend Declared USD ($)	Jul. 31, 2012 MSC Dividend Declared ARS	Sep. 30, 2012 MSC Subsequent event Dividend Declared USD ($)	Sep. 30, 2012 MSC Subsequent event Dividend Declared ARS	Sep. 30, 2012 MSC McEwen Mining USD ($)	Sep. 30, 2012 MSC McEwen Mining USD ($)
Nature of Operations and Basis of Presentation
Interest acquired (as a percent)										49.00%
Interest held (as a percent)				49.00%				49.00%	49.00%
Change in the investment in MSC
Fair value of investment in MSC from acquisition of Minera Andes				$ 261,186,000				$ 261,186,000	$ 261,186,000
Income from equity investment	11,311,000	14,759,000		12,908,000				18,505,000	18,505,000
Amortization of fair value increments				(1,597,000)	1,259,000	890,000	2,149,000		(3,746,000)
Dividends									(4,765,000)
Investment in MSC, end of period	271,180,000	271,180,000		271,180,000				271,180,000	271,180,000
Summary of MSC's financial information from operations
Sales percentage				100.00%				100.00%	100.00%
Sales				116,299,000				212,902,000
Net income percentage				100.00%				100.00%
Net income				26,343,000	(20,707,000)	(16,997,000)	(37,995,000)	37,765,000							12,908,000	18,505,000
Income on investment in MSC	11,311,000	14,759,000		12,908,000				18,505,000	18,505,000
Income on investment in MSC, net of amortization				11,311,000				14,759,000
Current assets	36,020,000	36,020,000	47,883,000	151,700,000				151,700,000	151,700,000
Total assets	1,111,205,000	1,111,205,000	310,355,000	839,800,000				839,800,000	839,800,000
Current liabilities	7,504,000	7,504,000	6,124,000	99,400,000				99,400,000	99,400,000
Total liabilities	256,834,000	256,834,000	91,051,000	303,000,000				303,000,000	303,000,000
Dividend declared by MSC													5,300,000	25,000,000
Dividend payable to the Company											$ 2,200,000	9,800,000	$ 12,250,000	2,600,000

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STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2012

STOCK-BASED COMPENSATION

Schedule of principal assumptions used in applying the Black-Scholes option pricing model for the awards

	Three Months Ended		Nine Months Ended
	September 30, 2012	September 30, 2011	September 30, 2012	September 30, 2011
Risk-free interest rate	—	—	0.97%	1.82% to 2.33%
Dividend yield	—	—	n/a	n/a
Volatility factor of the expected market price of common stock	—	—	75%	90% to 100%
Weighted-average expected life of option	—	—	6.0 years	6.6 years
Weighted-average grant date fair value	—	—	$3.80	$4.97

Nevada Pacific Gold Ltd.

Stock options outstanding and exercisable

Summary of information about stock options outstanding and exercisable

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
C$0.00-C$5.00	271,543	C$	4.54	3.51	271,543	C$	4.54	3.51
C$5.01-C$6.70	123,050	C$	5.96	2.26	123,050	C$	5.96	2.26

Minera Andes

Stock options outstanding and exercisable

Summary of information about stock options outstanding and exercisable

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
C$0.00-C$2.22	220,500	C$	1.67	1.33	220,500	C$	1.67	1.33
C$2.23-C$3.02	525,150	C$	2.40	2.31	377,101	C$	2.45	2.19

McEwen Mining

Stock options outstanding and exercisable

Summary of information about stock options outstanding and exercisable

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
$0.00-$2.00	1,339,000	$	1.05	6.19	1,339,000	$	1.05	6.19
$2.01-$4.00	1,030,800	$	2.57	6.05	827,467	$	2.59	5.73
$4.01-$6.00	366,500	$	5.66	8.49	66,500	$	5.01	4.70
$6.01-$8.31	886,333	$	7.17	8.19	331,664	$	7.28	7.74

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OPERATING SEGMENT REPORTING (Tables)

9 Months Ended

Sep. 30, 2012

OPERATING SEGMENT REPORTING

Schedule of operating segments

									Corporate &
	Argentina		Mexico			U.S.			Other			Total
	(in thousands)
For the three months ended September 30, 2012
Income on investment in Minera Santa Cruz S.A. (net of amortization)	$	11,311	$	—		$	—		$	—		$	11,311
Gold and silver sales	—		456			—			—			456
Production costs applicable to sales	—		119			—			—			119
Exploration costs	1,539		3,847			999			323			6,708
Mine construction costs	—		4,671			—			—			4,671
Mine development and operating costs	—		2,406			—			—			2,406
Operating income (loss)	9,200		(12,650		)	(4,234		)	(2,870		)	(10,554		)
For the nine months ended September 30, 2012
Income on investment in Minera Santa Cruz S.A. (net of amortization)	$	14,759	$	—		$	—		$	—		$	14,759
Gold and silver sales	—		456			—			—			456
Production costs applicable to sales	—		119			—			—			119
Exploration costs	11,369		12,394			3,905			897			28,565
Mine construction costs	—		13,306			—			—			13,306
Mine development and operating costs	—		8,622			—			—			8,622
Operating income (loss)	1,231		(38,733		)	(7,864		)	(11,451		)	(56,817		)
As at September 30, 2012
Investment in Minera Santa Cruz S.A.	$	271,180	$	—		$	—		$	—		$	271,180
Mineral property interests	541,702		14,050			229,526			—			785,278
Total assets	831,129		42,717			234,804			2,555			1,111,205
									Corporate &
	Argentina		Mexico			U.S.			Other			Total
	(in thousands)
For the three months ended September 30, 2011
Exploration costs	—		$	10,822		$	4,114		$	179		$	15,115
Operating loss	—		(12,196		)	(5,736		)	(3,307		)	(21,239		)
For the nine months ended September 30, 2011
Exploration costs	—		$	22,846		$	9,066		$	738		$	32,650
Operating loss	—		(25,728		)	(11,710		)	(6,686		)	(44,124		)
As at December 31, 2011
Mineral property interests	—		$	12,750		$	232,704		$	—		$	245,454
Total assets	—		33,899			238,402			38,054			310,355

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BUSINESS ACQUISITION

9 Months Ended

Sep. 30, 2012

BUSINESS ACQUISITION

BUSINESS ACQUISITION

NOTE 2   BUSINESS ACQUISITION

On January 24, 2012, the Company completed the acquisition of Minera Andes (“the Arrangement”) through a court-approved plan of arrangement under Alberta, Canada law, under which Minera Andes, a Canadian company, became an indirect wholly-owned subsidiary of the Company.

The Company’s management and Board of Directors believes that the combination with Minera Andes is in the best interests of the Company and its shareholders because the combined company is expected to have a stronger combined cash position and balance sheet, sources of revenue, active mining operations, enhanced trading liquidity, a significant growth profile, industry leading costs, an expanded exploration program and additional technical expertise.

On the closing date of the Arrangement, holders of Minera Andes’ common stock received a number of exchangeable shares of McEwen Mining - Minera Andes Acquisition Corporation (“2012-Exchangeable Shares”), an indirect wholly-owned Canadian subsidiary of the Company, equal to the number of Minera Andes shares, multiplied by the exchange ratio of 0.45.  In the aggregate, former Minera Andes shareholders received 127,331,498 2012-Exchangeable Shares.  After closing of the Arrangement, the name of the Company was changed to McEwen Mining Inc.  The Company’s common stock began trading on the NYSE and TSX under the symbol “MUX” and the 2012-Exchangeable Shares began trading on the TSX under the symbol “MAQ” on January 27, 2012.

As a result of the Arrangement and on the date of closing, the combined company was held approximately 52% by then-existing McEwen Mining shareholders and 48% by former Minera Andes shareholders. On a diluted basis, the combined company was held approximately 53% by then existing McEwen Mining shareholders and 47% by former Minera Andes shareholders.

In June 2011, Robert R. McEwen, the Company’s Chairman, President, Chief Executive Officer and largest shareholder and then also the Chairman, President, Chief Executive Officer and largest shareholder of Minera Andes, proposed the Arrangement.  In connection with the Arrangement, Mr. McEwen received approximately 38.7 million 2012 Exchangeable Shares.  Mr. McEwen owns approximately 25.1% of the shares of the Company.

The 2012-Exchangeable Shares are exchangeable for the Company’s common stock on a one-for-one basis.  Option holders of Minera Andes received replacement options entitling them to receive, upon exercise, shares of the Company’s common stock, reflecting the exchange ratio of 0.45 with the appropriate adjustment of the exercise price per share.  The option life and vesting period of the replacement options has not changed from the option life granted under the Minera Andes option plan.

The estimated fair value of the vested portion of the replacement options of $3.2 million have been included as part of the purchase price consideration at their fair values based on the Black-Scholes pricing model as illustrated below.

The principal assumptions used in applying the Black-Scholes option pricing model were as follows:

	January 24, 2012
Risk-free interest rate	0.02% to 0.39%
Dividend yield	n/a
Volatility factor of the expected market price of common stock	46% to 77%
Weighted-average expected life of option	1.4 years

The acquisition has been accounted for using the acquisition method in accordance with ASC Topic 805, Business Combinations, with the Company being identified as the acquirer.  The measurement of the purchase consideration was based on the market price of the Company’s common stock on January 24, 2012, which was $5.22 per share.  The total purchase price, including the fair value of the options, amounted to $667.8 million.  The total transaction costs incurred through September 30, 2012 by the Company was $5.3 million, of which $3.9 million was reported in the year ended December 31, 2011 in general and administrative expenses, and $1.4 million for the nine months ended September 30, 2012 in acquisition costs in the consolidated statements of operations and comprehensive loss.

The allocation of the purchase price on a preliminary basis, based on the estimated fair value of assets acquired and liabilities assumed on January 24, 2012, is summarized in the following table (in thousands).

	Fair Value
Purchase price:
Exchangeable shares of McEwen Mining - Minera Andes Acquisition	$	664,671
Stock options to be exchanged for options of McEwen Mining	3,175
	$	667,846
Net assets acquired:
Cash and cash equivalents	$	31,385
Short-term investments	4,952
Other current assets	9,828
Inventories	1,362
Mineral property interests	541,702
Investment in Minera Santa Cruz S.A.	261,186
Equipment	1,647
Accounts payable	(5,323		)
Deferred income tax liability	(178,893		)
	$	667,846

The purchase consideration for the mineral property interests exceeded the carrying value of the underlying assets for tax purposes by approximately $511.1 million.  This amount has been applied to increase the carrying value of mineral property interests for accounting purposes.  However, this did not increase the carrying value of the underlying assets for tax purposes and resulted in a temporary difference between accounting and tax value.  The resulting estimated deferred income tax liability originally associated with this temporary difference was approximately $178.9 million, which is included in the preliminary allocation of purchase price above.  For the three and nine months ended September 30, 2012, the Company recorded a deferred income tax recovery of $5.4 million and $13.7 million, respectively, as a result of fluctuations in the foreign exchange rates between the Argentine pesos and U.S. dollar from January 24, 2012 to September 30, 2012.  These amounts are included in Recovery of income taxes on the Consolidated Statement of Operations and Comprehensive Loss for the respective periods.  As a result of the fluctuations in the foreign exchange rates during the two periods, the deferred income tax liability on these assets was reduced to $165.2 million, which is included in the deferred income tax liability balance of $242.8 million on the consolidated balance sheet as at September 30, 2012.

For the purposes of the Company’s financial statements, the purchase consideration has been allocated to the fair value of assets acquired and liabilities assumed, based on an independent valuation report and management’s best estimates and taking into account all available information at the time these consolidated financial statements were prepared.  The allocation is still preliminary and is subject to change.

Unaudited Pro Forma Results

ASC Topic 805 requires supplemental information on a pro forma basis to disclose the results of operations for the interim period as though the business combination had been completed as of the beginning of the periods being reported.

The following table sets forth on a pro forma basis, the results of operations for McEwen Mining, had the acquisition of Minera Andes been completed on January 1, 2012 and 2011 (in thousands):

Nine months ended September 30, 2012	McEwen Mining			Minera Andes (a)		Combined
Revenue	$	15,215		$	4,979	$	20,194
Net (loss) income for the period	(40,578		)	3,498		(37,080		)

Nine months ended September 30, 2011	McEwen Mining			Minera Andes		Combined
Revenue	$	—		$	35,830	$	35,830
Net (loss) income for the period	(45,568		)	23,406		(22,162		)

(a)Nine months ended September 30, 2012 represents the results of Minera Andes’ operations from January 1, 2012 through January 24, 2012, closing date of the acquisition. Beginning January 25, 2012, the results of Minera Andes’ operations are included in McEwen Mining’s consolidated financial statements.

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FAIR VALUE ACCOUNTING (Tables)

9 Months Ended

Sep. 30, 2012

FAIR VALUE ACCOUNTING

Schedule of assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy

	Fair Value as at September 30, 2012
	Total		Level 1		Level 2		Level 3
	(in thousands)
Assets:
Cash and cash equivalents	$	18,520	$	18,520	$	—	$	—
Marketable equity securities	6		6		—		—
	$	18,526	$	18,526	$	—	$	—
Liabilities:
Accounts payable and accrued liabilities	$	7,181	$	—	$	7,181	$	—

	Fair Value as at December 31, 2011
	Total		Level 1		Level 2		Level 3
	(in thousands)
Assets:
Cash and cash equivalents	$	13,416	$	13,416	$	—	$	—
Short-term investments	3,933		3,933		—		—
Marketable equity securities	1,480		897		583		—
	$	18,829	$	18,246	$	583	$	—
Liabilities:
Accounts payable and accrued liabilities	$	5,612	$	—	$	5,612	$	—

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GOLD AND SILVER BULLION (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
GOLD AND SILVER BULLION
Total cost	$ 1,690,000		$ 1,690,000		$ 22,810,000
Changes in the Company's holdings of gold and silver
Opening Balance			22,810,000	4,569,000	4,569,000
Purchases				31,300,000	31,299,000
Proceeds from sale			(23,836,000)	(8,784,000)	(11,739,000)
Gain on sale	1,233,000	1,143,000	3,075,000	1,667,000	2,075,000
Unrealized loss on silver bullion		(2,139,000)	(359,000)	(2,139,000)	(3,394,000)
Ending Balance	1,690,000		1,690,000		22,810,000
Gold
GOLD AND SILVER BULLION
# of ounces	793		793		5,656
Average cost per ounce (in dollars per ounce)	1,278.63		1,278.63		1,278.63
Total cost	1,014,000		1,014,000		7,232,000
Fair value per ounce (in dollars per ounce)	1,776.00		1,776.00		1,574.50
Total fair value	1,408,000		1,408,000		8,905,000
Quantity sold (in ounces)			4,863
Cost of investments sold			6,200,000
Changes in the Company's holdings of gold and silver
Opening Balance			7,232,000	4,569,000	4,569,000
Purchases					7,387,000
Proceeds from sale			(7,982,000)		(6,218,000)
Gain on sale			1,764,000		1,494,000
Ending Balance	1,014,000		1,014,000		7,232,000
Silver
GOLD AND SILVER BULLION
# of ounces	24,969		24,969		552,812
Average cost per ounce (in dollars per ounce)	27.08		27.08		28.18
Total cost	676,000		676,000		15,578,000
Fair value per ounce (in dollars per ounce)	34.65		34.65		28.18
Total fair value	865,000		865,000		15,578,000
Quantity sold (in ounces)			527,843
Cost of investments sold			14,500,000
Changes in the Company's holdings of gold and silver
Opening Balance			15,578,000
Purchases					23,912,000
Proceeds from sale			(15,854,000)		(5,521,000)
Gain on sale			1,311,000		581,000
Unrealized loss on silver bullion			(359,000)		(3,394,000)
Ending Balance	$ 676,000		$ 676,000		$ 15,578,000

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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
REVENUE
Income on investment in Minera Santa Cruz S.A., net of amortization - note 7	$ 11,311		$ 14,759
Gold and silver sales	456		456
Total Revenue	11,767		15,215
COSTS AND EXPENSES
Production costs applicable to sales	119		119
General and administrative	4,119	1,540	12,935	5,059
Acquisition costs	8	1,920	1,450	2,128
Property holding costs	2,147	2,362	4,127	3,470
Exploration costs	6,708	15,115	28,565	32,650
Mine construction costs	4,671		13,306
Mine operating costs	2,406		8,622
Accretion of asset retirement obligation	110	134	342	400
Depreciation	266	179	750	438
Gain on sale of property and equipment	(1,135)	(11)	(1,265)	(21)
Asset impairments	2,902		3,081
Total costs and expenses	22,321	21,239	72,032	44,124
Operating loss	(10,554)	(21,239)	(56,817)	(44,124)
OTHER INCOME (EXPENSE)
Interest income	16	19	198	50
Interest expense		46		29
Gain on sale of gold and silver bullion - note 4	1,233	1,143	3,075	1,667
Unrealized loss on silver bullion - note 4		(2,139)	(359)	(2,139)
(Loss) gain on sale of marketable equity securities - note 3	(70)	19	(70)	19
Other-than-temporary impairment on marketable equity securities - note 3			(1,993)
Foreign currency gain (loss)	423	(1,529)	469	(1,070)
Total other income (expense)	1,602	(2,441)	1,320	(1,444)
Loss before income taxes	(8,952)	(23,680)	(55,497)	(45,568)
Recovery of income taxes - note 2	6,369		14,919
Net loss	(2,583)	(23,680)	(40,578)	(45,568)
OTHER COMPREHENSIVE LOSS
Reclassification of unrealized gain on marketable equity securities disposed of during the period, net of taxes			1,000
Unrealized (loss) gain on marketable securities, net of taxes	(1)	89	(2)	(777)
Comprehensive loss	$ (2,584)	$ (23,591)	$ (39,580)	$ (46,345)
Basic and diluted per share data:
Net loss - basic and diluted (in dollars per share)	$ (0.01)	$ (0.17)	$ (0.16)	$ (0.33)
Weighted average common shares outstanding:
Basic and diluted (in shares)	268,373	139,725	256,834	136,134

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PROPERTY AND EQUIPMENT (Details) (USD $)	3 Months Ended	9 Months Ended		3 Months Ended					3 Months Ended			3 Months Ended									3 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Dec. 31, 2011	Mar. 31, 2012 Minera Andes	Sep. 30, 2012 Trucks and trailers	Dec. 31, 2011 Trucks and trailers	Sep. 30, 2012 Office furniture and equipment	Dec. 31, 2011 Office furniture and equipment	Sep. 30, 2012 Drill rigs	Jun. 30, 2012 Drill rigs item	Dec. 31, 2011 Drill rigs	Mar. 31, 2012 Drill rigs Minera Andes	Sep. 30, 2012 Building	Dec. 31, 2011 Building	Sep. 30, 2012 Land	Dec. 31, 2011 Land	Sep. 30, 2012 Mining equipment	Dec. 31, 2011 Mining equipment	Sep. 30, 2012 Inactive milling equipment	Dec. 31, 2011 Inactive milling equipment	Sep. 30, 2012 Inactive milling equipment, mobile homes and vehicles
PROPERTY AND EQUIPMENT
Subtotal	$ 16,148,000	$ 16,148,000	$ 14,089,000		$ 1,417,000	$ 1,247,000	$ 1,054,000	$ 638,000	$ 1,869,000		$ 998,000		$ 1,469,000	$ 853,000	$ 8,669,000	$ 8,619,000	$ 1,026,000	$ 956,000	$ 644,000	$ 778,000
Less: accumulated depreciation	(2,665,000)	(2,665,000)	(2,317,000)
Total	13,483,000	13,483,000	11,772,000																		100,000
Additional investment in property and equipment				1,600,000								1,000,000
Number of drill rigs sold										4
Impairment	2,902,000	3,081,000								200,000
Proceeds from sale of productive assets									1,800,000												1,400,000
Net realizable value of long-lived assets held for sale										$ 1,800,000

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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows (used in) from operating activities:
Cash paid to suppliers and employees	$ (65,760)	$ (40,243)
Dividend received from Minera Santa Cruz S.A.	2,154
Interest received	125	50
Cash used in operating activities	(63,481)	(40,193)
Cash flows (used in) provided by investing activities:
Cash and short-term investments received from acquisition of Minera Andes Inc.	36,337
Short-term investments (net)	3,933
Acquisition of mineral property interests	(712)	(9,828)
Additions to property and equipment	(1,769)	(7,777)
Proceeds from disposal of property and equipment	3,143	36
Investment in gold and silver bullion		(31,300)
Proceeds from sale of gold and silver bullion	23,836	8,784
Investment in marketable equity securities		(284)
Proceeds from sale of marketable equity securities	409	1,854
Increase in restricted investments securing reclamation		(413)
Cash provided by (used in) investing activities	65,177	(38,928)
Cash flows from financing activities:
Sale of common stock for cash, net of issuance costs		105,415
Exercise of stock options	3,564	773
Cash provided by financing activities	3,564	106,188
Effect of exchange rate change on cash and cash equivalents	(156)	(1,078)
Increase in cash and cash equivalents	5,104	25,989
Cash and cash equivalents, beginning of period	13,416	6,818
Cash and cash equivalents, end of period	18,520	32,807
Reconciliation of net loss to cash used in operating activities:
Net loss	(40,578)	(45,568)
Adjustments to reconcile net loss from operating activities:
Income on investment in Minera Santa Cruz S.A. (net of amortization)	(14,759)
Deferred income taxes	(14,919)
Gain on sale of gold and silver bullion	(3,075)	(1,667)
Unrealized loss on silver bullion	359	2,139
Other-than-temporary impairment on marketable equity securities	1,993
Loss (gain) on sale of marketable equity securities	70	(19)
Gain on sale of property and equipment	(1,265)	(21)
Asset impairments	3,081
Stock-based compensation	2,845	1,905
Accretion of asset retirement obligation	342	400
Depreciation	750	438
Foreign exchange loss	156	1,078
Change in non-cash working capital items:
Increase in other assets related to operations	(6,680)	(1,720)
Dividend receivable obtained from acquisition of Minera Andes Inc.	9,363
Dividend receivable from Minera Santa Cruz S.A.	2,611
(Decrease) increase in liabilities related to operations	(3,775)	2,842
Cash used in operating activities	$ (63,481)	$ (40,193)

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (San Jose Mine)	Sep. 30, 2012
San Jose Mine
Proven and Probable Reserves
Ownership interest (as a percent)	49.00%

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

9 Months Ended

Sep. 30, 2012

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Business Combinations

Business Combinations— The Company accounts for business combinations using the acquisition method of accounting pursuant to Accounting Standards Codification (“ASC”) Topic 805 — Business Combinations.  The acquisition method requires the Company to determine the fair value of all acquired assets, including identifiable intangible assets, and all assumed liabilities.  The total cost of acquisitions is allocated to the underlying identifiable net assets, based on their respective estimated fair values.  Determining the fair value of assets acquired and liabilities assumed requires management’s judgment, and the utilization of independent valuation experts, and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, and asset lives, among other items.  Transaction costs are expensed as incurred and are reported on the acquisition costs line within the consolidated statements of operations and comprehensive loss.

Investments - Equity Method and Joint Ventures

Investments — Equity Method and Joint Ventures - The Company accounts for investments over which the Company exerts significant influence using the equity method of accounting pursuant to ASC Topic 323 — Investments, Equity Method and Joint Ventures.  Under this method, the Company’s share of earnings and losses is included in the consolidated statement of operations and comprehensive loss and the balance of the investment is adjusted by a like amount.  Under the equity method, dividends received from an investee are recorded as decreases in the investment account, not as income.  Where there has been a loss in value that is other than a temporary decline, the carrying value is reduced to its fair value.

IVA taxes receivable

IVA taxes receivable — In Mexico and Argentina, value added taxes (IVA) are assessed on purchases of materials and services and sales of products.  Businesses are generally entitled to recover the taxes they have paid related to purchases of materials and services, either as a refund or as a credit against future taxes payable.  In Argentina, except at the San José Mine, the Company expenses all IVA as their recoverability is uncertain.

Stockpiles, Ore on Leach Pads, In-process Inventory, Precious Metals Inventory and Materials and Supplies

Stockpiles, Ore on Leach Pads, In-process Inventory, Precious Metals Inventory and Materials and Supplies — Stockpiles, ore on leach pads, and in-process inventory are carried at the lower of average cost or net realizable value, if commercial production is achieved. For accounting purposes, the Company has achieved commercial production during the third quarter of 2012 after its initial gold pour in late September.  Net realizable value represents the estimated future sales price of the product based on current and long-term metals prices, less the estimated costs to complete production and bring the product to sale. Write-downs of stockpiles, ore on leach pads, in-process inventory, precious metals inventory and materials and supplies, resulting from net realizable value impairments, are reported as a component of production costs applicable to sales. The current portion of stockpiles, ore on leach pad, in-process inventory and materials and supplies is determined based on the expected amounts to be processed within the next 12 months. Stockpiles, ore on leach pads, in-process inventory and materials and supplies not expected to be processed within the next 12 months, if any, are classified as long-term.

Stockpiles represent ore that have been extracted from the mine and is available for further processing. Stockpiles are measured by estimating the number of tonnes added and removed from the stockpile, an estimate of the contained metals (based on assay data) and the estimated metallurgical recovery rates. Costs are allocated to stockpiles based on relative values of material stockpiled and processed using current mining costs incurred up to the point of stockpiling the ore. Material is removed from the stockpile at an average cost per tonne.  Since the Company only achieved commercial production for accounting purposes in September 2012, no value was allocated to stockpiles prior to the month of September 2012.

Ore on leach pads is the ore that is placed on pads where it is treated with a chemical solution that dissolves the gold contained in the ore over a period of months.  Costs are attributed to the leach pads based on current mining costs incurred up to the point of placing the ore on the pad.  Costs are removed from the leach pad based on the average cost per estimated recoverable ounce of gold on the leach pad as the gold is recovered.  The estimates of recoverable gold on the leach pads are calculated from the quantities of ore placed on the leach pads, the grade of ore placed on the leach pads and a recovery percentage.  The quantities of recoverable gold placed on the leach pads are reconciled to the quantities of gold actually recovered (metallurgical balancing), by comparing the grades of ore placed on the leach pads to actual ounces recovered.  The nature of the leaching process inherently limits the ability to precisely monitor inventory levels.  As a result, the metallurgical balancing process is constantly monitored and the engineering estimates are refined based on actual results over time.

In-process inventories represent materials that are currently in the process of being converted to a saleable product.  The El Gallo Phase 1 conversion process is an Adsorption-Desorption-Recovery (“ADR”) processing plant utilizing carbon columns for recovery.  In-process material is measured based on assays of the material fed into the process and the projected recoveries of the respective plants.  In-process inventories are valued at the average cost of the material fed into the process attributable to the source material coming from the mines, stockpiles and/or leach pads plus the in-process conversion costs incurred to that point in the process.

Precious metal inventory include gold bullion that is unsold and held at the refinery and is valued at the lower of average mining cost or net realizable value.

Material and Supplies Inventories

Materials and supplies inventories are comprised of chemicals, reagents and consumable parts used in drilling and other operating activities.  They are valued at the lower of average cost or net realizable value.  Cost includes applicable taxes and freight.

Revenue Recognition

Revenue Recognition — Revenue includes sales value received for the Company’s principal products, gold and silver. Revenue is recognized, net of refining charges and royalties, when title to gold and silver passes to the buyer and when collectability is reasonably assured. Title passes to the buyer based on terms of the sales contract. Revenues from by-product sales are credited to production cost applicable to sales.  Product pricing is determined at the point revenue is recognized by reference to active and freely traded commodity markets, for example, the London Bullion Market for both gold and silver, in an identical form to the product sold.

The Company entered into a doré sales agreement, whereby the Company has the option to sell approximately 90% of the gold and silver contained in doré bars produced at the El Gallo Complex prior to the completion of refining, which normally takes 15 business days.

The Company has a net smelter return (“NSR”) royalty agreement with a third party on all Phase 1 metals production and a portion of future Phase 2 metals production from the El Gallo Complex.  The terms of the royalty agreement stipulate that production up to 30,000 of gold and gold equivalent ounces are subject to a 1% NSR, production between 30,001 to 380,000 of gold and gold equivalent ounces are subject to a 3.5% NSR, and 1% thereafter.  Currently the Company is subject to the 3.5% NSR.  Under the terms of the royalty agreement, the royalty holder has the option to settle the NSR payment in cash or gold and gold equivalent ounces.  The royalty holder has indicated a preference to settle the NSR payment in gold and gold equivalent ounces which would be calculated on the day the refiner credits the Company’s metals account.

Proven and Probable Reserves

Proven and Probable Reserves—The definition of proven and probable reserves is set forth in the SEC Industry Guide 7 (“Guide 7”). Proven reserves are reserves for which (a) quantity is computed from dimensions revealed in outcrops, trenches, workings or drill holes, grade and/or quality are computed from the results of detailed sampling and (b) the sites for inspection, sampling and measurement are spaced so closely and the geological character is so well defined that size, shape, depth and mineral content of the reserves are well-established. Probable reserves are reserves for which quantity and grade and/or quality are computed from information similar to that used for proven (measured) reserves, but the sites for inspection, sampling, and measurement are farther apart or are otherwise less adequately spaced. The degree of assurance, although lower than that for proven (measured) reserves, is high enough to assume continuity between points of observations.

As of September 30, 2012, except for the Company’s 49% interest in the San José Mine, none of the Company’s other mineralized properties contain resources that satisfy the definition of proven and probable reserves.

Design, Construction, and Development Costs

Design, Construction, and Development Costs—Certain costs to design and construct mining and processing facilities may be incurred prior to establishing proven and probable reserves.  Prior to commercial production for accounting purposes in September 2012, the Company classified the Phase 1 development of the El Gallo Complex as an exploration stage project since no Guide 7 proven or probable reserves have been established, and accordingly, substantially all costs, including design, engineering, construction, and installation of equipment were expensed as incurred.

Certain types of equipment, which have alternative uses or significant salvage value, may be capitalized without proven and probable reserves.  If a project commences commercial production, amortization and depletion of capitalized costs for such equipment would be computed on a unit-of—production basis over the expected reserves of the project based on estimated recoverable ounces.

Mine development costs include engineering and metallurgical studies, drilling and other related costs to delineate an ore body, the removal of overburden to initially expose an ore body at open pit surface mines and the building of access ways, shafts, lateral access, drifts, ramps and other infrastructure at underground mines.  Development costs are capitalized when proven and probable reserves exist and the property is a commercially minable property.  Mine development costs incurred either to develop new ore deposits, expand the capacity of operating mines, or to develop mine areas substantially in advance of current production are capitalized.  Costs of start-up activities and costs incurred to maintain current production or to maintain assets on a standby basis are charged to operations as incurred.  Costs of abandoned projects are charged to operations upon abandonment.  All capitalized costs are amortized using the units of production method over the estimated life of the ore body based on recoverable ounces to be mined from proven and probable reserves.

As of September 30, 2012, except for the Company’s 49% interest in the San José Mine, development costs are not capitalized at any of the Company’s properties, as no proven and probable reserves exist.

Property and Equipment

Property and Equipment — Expenditures for new facilities or equipment and expenditures that extend the useful lives of existing facilities or equipment are capitalized and recorded at cost.  Depreciation is computed using straight-line methods. Office furniture, equipment and light vehicles are being depreciated over the estimated economic lives ranging from 3 to 5 years.  Trailers, heavy vehicles and other site equipment are being depreciated over estimated economic lives from 5 to 15 years. Buildings are being depreciated over an estimated economic life of 20 years.  All mining equipment is depreciated using the units-of-production method based upon estimated proven and probable reserves.

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets—The Company reviews and evaluates its long-lived assets for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable.  Recoverability is measured by comparing the net book value to fair value. When the net book value exceeds fair value, an impairment loss is measured and recorded.  Mineral properties are monitored for impairment based on factors such as the Company’s continued right to explore the area, exploration reports, assays, technical reports, drill results and its continued plans to fund exploration programs on the property.  The Company uses the market approach to estimate the fair value of the properties by using a combination of the observed market value per square mile in the region and an observed market value per ounce of mineralized material.  The Company is unable to estimate undiscounted future net cash flows from its operations due to the absence of proven and probable reserves.  As such, the appropriate evidence to perform estimates of future cash flows is not available and may not be accurate in supporting the Company’s long-lived assets.  For purposes of recognition and measurement of an impairment loss, the Company groups its properties by geological mineral complex, as this represents the lowest level at which the Company allocates its exploration spending independent of other assets and liabilities.  For the recently acquired Santa Cruz exploration properties, the Company has separated its properties into two regions, due to their physical separation, for the purposes of impairment testing. The two regions are Cerro Negro and Other Santa Cruz exploration properties.

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4)	9 Months Ended
	Sep. 30, 2012 item
Impairment of Long-Lived Assets
Number of regions into which properties has been separated	2
Office furniture, equipment and light vehicles | Minimum
Property and Equipment
Estimated economic life	3 years
Office furniture, equipment and light vehicles | Maximum
Property and Equipment
Estimated economic life	5 years
Trailers, heavy vehicles and other site equipment | Minimum
Property and Equipment
Estimated economic life	5 years
Trailers, heavy vehicles and other site equipment | Maximum
Property and Equipment
Estimated economic life	15 years
Building
Property and Equipment
Estimated economic life	20 years

XML

MARKETABLE EQUITY SECURITIES (Tables)

9 Months Ended

Sep. 30, 2012

MARKETABLE EQUITY SECURITIES

Schedule of change in marketable security holdings

Changes in the Company’s holdings of marketable securities for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended September 30,			Year Ended December 31,
	2012			2011
Opening Balance	$	1,480		$	4,576
Purchases	—			284
Proceeds from sale	(409		)	(1,853		)
Gain on sale	—			19
Unrealized loss	(2		)	(1,546		)
Realized loss	(1,063		)	—
Ending Balance	$	6		$	1,480

XML

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

9 Months Ended

Sep. 30, 2012

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NOTE 1  NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations and Basis of Presentation

McEwen Mining Inc. (the “Company” or “McEwen Mining”) was organized under the laws of the State of Colorado on July 24, 1979.  Since inception, the Company has been engaged in the exploration for, development of, production and sale of gold and silver. On January 24, 2012, the Company changed its name from US Gold Corporation to McEwen Mining Inc. after the completion of the acquisition, by way of a statutory plan of arrangement under the laws of the Province of Alberta, Canada, of Minera Andes Inc. (“Minera Andes”).

As a result of the acquisition of Minera Andes, the Company acquired a 49% interest in Minera Santa Cruz S.A. (“MSC”), owner of the producing San José Silver-Gold Mine in Santa Cruz, Argentina; a 100% interest in the Los Azules Copper Deposit in San Juan, Argentina, and a large portfolio of exploration properties in Santa Cruz, Argentina.  The San José Mine is operated by the majority owner of the joint venture, Hochschild Mining plc (‘‘Hochschild’’).

The Company recently began production at Phase 1 of the El Gallo Complex in Mexico, with a total of 298 oz of gold produced during September 2012.

The interim consolidated financial statements included herein have been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”).  Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) has been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures included are adequate to make the information presented not misleading.

In management’s opinion, the unaudited consolidated statements of operations and comprehensive loss for the three and nine months ended September 30, 2012 and 2011, the consolidated balance sheets as at September 30, 2012 (unaudited) and December 31, 2011, the unaudited consolidated statement of changes in shareholders’ equity for the nine months ended September 30, 2012 and 2011, and the unaudited consolidated statements of cash flows for the nine months ended September 30, 2012 and 2011, contained herein, reflect all adjustments, consisting solely of normal recurring items, which are necessary for the fair presentation of the Company’s financial position, results of operations and cash flows on a basis consistent with that of the Company’s prior audited consolidated financial statements.  However, the results of operations for the interim periods may not be indicative of results to be expected for the full fiscal year.  Therefore these financial statements should be read in conjunction with the audited financial statements and notes thereto and summary of significant accounting policies included in the Company’s Form 10-K for the year ended December 31, 2011.  Except as noted below, there have been no material changes in the footnotes from those accompanying the audited consolidated financial statements contained in the Company’s Form 10-K.

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries.  All inter-company accounts and transactions have been eliminated.

Significant Accounting Policies

Business Combinations— The Company accounts for business combinations using the acquisition method of accounting pursuant to Accounting Standards Codification (“ASC”) Topic 805 — Business Combinations.  The acquisition method requires the Company to determine the fair value of all acquired assets, including identifiable intangible assets, and all assumed liabilities.  The total cost of acquisitions is allocated to the underlying identifiable net assets, based on their respective estimated fair values.  Determining the fair value of assets acquired and liabilities assumed requires management’s judgment, and the utilization of independent valuation experts, and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, and asset lives, among other items.  Transaction costs are expensed as incurred and are reported on the acquisition costs line within the consolidated statements of operations and comprehensive loss.

Investments — Equity Method and Joint Ventures - The Company accounts for investments over which the Company exerts significant influence using the equity method of accounting pursuant to ASC Topic 323 — Investments, Equity Method and Joint Ventures.  Under this method, the Company’s share of earnings and losses is included in the consolidated statement of operations and comprehensive loss and the balance of the investment is adjusted by a like amount.  Under the equity method, dividends received from an investee are recorded as decreases in the investment account, not as income.  Where there has been a loss in value that is other than a temporary decline, the carrying value is reduced to its fair value.

IVA taxes receivable — In Mexico and Argentina, value added taxes (IVA) are assessed on purchases of materials and services and sales of products.  Businesses are generally entitled to recover the taxes they have paid related to purchases of materials and services, either as a refund or as a credit against future taxes payable.  In Argentina, except at the San José Mine, the Company expenses all IVA as their recoverability is uncertain.

Stockpiles, Ore on Leach Pads, In-process Inventory, Precious Metals Inventory and Materials and Supplies — Stockpiles, ore on leach pads, and in-process inventory are carried at the lower of average cost or net realizable value, if commercial production is achieved. For accounting purposes, the Company has achieved commercial production during the third quarter of 2012 after its initial gold pour in late September.  Net realizable value represents the estimated future sales price of the product based on current and long-term metals prices, less the estimated costs to complete production and bring the product to sale. Write-downs of stockpiles, ore on leach pads, in-process inventory, precious metals inventory and materials and supplies, resulting from net realizable value impairments, are reported as a component of production costs applicable to sales. The current portion of stockpiles, ore on leach pad, in-process inventory and materials and supplies is determined based on the expected amounts to be processed within the next 12 months. Stockpiles, ore on leach pads, in-process inventory and materials and supplies not expected to be processed within the next 12 months, if any, are classified as long-term.

Stockpiles represent ore that have been extracted from the mine and is available for further processing. Stockpiles are measured by estimating the number of tonnes added and removed from the stockpile, an estimate of the contained metals (based on assay data) and the estimated metallurgical recovery rates. Costs are allocated to stockpiles based on relative values of material stockpiled and processed using current mining costs incurred up to the point of stockpiling the ore. Material is removed from the stockpile at an average cost per tonne.  Since the Company only achieved commercial production for accounting purposes in September 2012, no value was allocated to stockpiles prior to the month of September 2012.

Ore on leach pads is the ore that is placed on pads where it is treated with a chemical solution that dissolves the gold contained in the ore over a period of months.  Costs are attributed to the leach pads based on current mining costs incurred up to the point of placing the ore on the pad.  Costs are removed from the leach pad based on the average cost per estimated recoverable ounce of gold on the leach pad as the gold is recovered.  The estimates of recoverable gold on the leach pads are calculated from the quantities of ore placed on the leach pads, the grade of ore placed on the leach pads and a recovery percentage.  The quantities of recoverable gold placed on the leach pads are reconciled to the quantities of gold actually recovered (metallurgical balancing), by comparing the grades of ore placed on the leach pads to actual ounces recovered.  The nature of the leaching process inherently limits the ability to precisely monitor inventory levels.  As a result, the metallurgical balancing process is constantly monitored and the engineering estimates are refined based on actual results over time.

In-process inventories represent materials that are currently in the process of being converted to a saleable product.  The El Gallo Phase 1 conversion process is an Adsorption-Desorption-Recovery (“ADR”) processing plant utilizing carbon columns for recovery.  In-process material is measured based on assays of the material fed into the process and the projected recoveries of the respective plants.  In-process inventories are valued at the average cost of the material fed into the process attributable to the source material coming from the mines, stockpiles and/or leach pads plus the in-process conversion costs incurred to that point in the process.

Precious metal inventory include gold bullion that is unsold and held at the refinery and is valued at the lower of average mining cost or net realizable value.

Materials and supplies inventories are comprised of chemicals, reagents and consumable parts used in drilling and other operating activities.  They are valued at the lower of average cost or net realizable value.  Cost includes applicable taxes and freight.

Revenue Recognition — Revenue includes sales value received for the Company’s principal products, gold and silver. Revenue is recognized, net of refining charges and royalties, when title to gold and silver passes to the buyer and when collectability is reasonably assured. Title passes to the buyer based on terms of the sales contract. Revenues from by-product sales are credited to production cost applicable to sales.  Product pricing is determined at the point revenue is recognized by reference to active and freely traded commodity markets, for example, the London Bullion Market for both gold and silver, in an identical form to the product sold.

The Company entered into a doré sales agreement, whereby the Company has the option to sell approximately 90% of the gold and silver contained in doré bars produced at the El Gallo Complex prior to the completion of refining, which normally takes 15 business days.

The Company has a net smelter return (“NSR”) royalty agreement with a third party on all Phase 1 metals production and a portion of future Phase 2 metals production from the El Gallo Complex.  The terms of the royalty agreement stipulate that production up to 30,000 of gold and gold equivalent ounces are subject to a 1% NSR, production between 30,001 to 380,000 of gold and gold equivalent ounces are subject to a 3.5% NSR, and 1% thereafter.  Currently the Company is subject to the 3.5% NSR.  Under the terms of the royalty agreement, the royalty holder has the option to settle the NSR payment in cash or gold and gold equivalent ounces.  The royalty holder has indicated a preference to settle the NSR payment in gold and gold equivalent ounces which would be calculated on the day the refiner credits the Company’s metals account.

Proven and Probable Reserves—The definition of proven and probable reserves is set forth in the SEC Industry Guide 7 (“Guide 7”). Proven reserves are reserves for which (a) quantity is computed from dimensions revealed in outcrops, trenches, workings or drill holes, grade and/or quality are computed from the results of detailed sampling and (b) the sites for inspection, sampling and measurement are spaced so closely and the geological character is so well defined that size, shape, depth and mineral content of the reserves are well-established. Probable reserves are reserves for which quantity and grade and/or quality are computed from information similar to that used for proven (measured) reserves, but the sites for inspection, sampling, and measurement are farther apart or are otherwise less adequately spaced. The degree of assurance, although lower than that for proven (measured) reserves, is high enough to assume continuity between points of observations.

As of September 30, 2012, except for the Company’s 49% interest in the San José Mine, none of the Company’s other mineralized properties contain resources that satisfy the definition of proven and probable reserves.

Design, Construction, and Development Costs—Certain costs to design and construct mining and processing facilities may be incurred prior to establishing proven and probable reserves.  Prior to commercial production for accounting purposes in September 2012, the Company classified the Phase 1 development of the El Gallo Complex as an exploration stage project since no Guide 7 proven or probable reserves have been established, and accordingly, substantially all costs, including design, engineering, construction, and installation of equipment were expensed as incurred.

Certain types of equipment, which have alternative uses or significant salvage value, may be capitalized without proven and probable reserves.  If a project commences commercial production, amortization and depletion of capitalized costs for such equipment would be computed on a unit-of—production basis over the expected reserves of the project based on estimated recoverable ounces.

Mine development costs include engineering and metallurgical studies, drilling and other related costs to delineate an ore body, the removal of overburden to initially expose an ore body at open pit surface mines and the building of access ways, shafts, lateral access, drifts, ramps and other infrastructure at underground mines.  Development costs are capitalized when proven and probable reserves exist and the property is a commercially minable property.  Mine development costs incurred either to develop new ore deposits, expand the capacity of operating mines, or to develop mine areas substantially in advance of current production are capitalized.  Costs of start-up activities and costs incurred to maintain current production or to maintain assets on a standby basis are charged to operations as incurred.  Costs of abandoned projects are charged to operations upon abandonment.  All capitalized costs are amortized using the units of production method over the estimated life of the ore body based on recoverable ounces to be mined from proven and probable reserves.

As of September 30, 2012, except for the Company’s 49% interest in the San José Mine, development costs are not capitalized at any of the Company’s properties, as no proven and probable reserves exist.

Property and Equipment — Expenditures for new facilities or equipment and expenditures that extend the useful lives of existing facilities or equipment are capitalized and recorded at cost.  Depreciation is computed using straight-line methods. Office furniture, equipment and light vehicles are being depreciated over the estimated economic lives ranging from 3 to 5 years.  Trailers, heavy vehicles and other site equipment are being depreciated over estimated economic lives from 5 to 15 years. Buildings are being depreciated over an estimated economic life of 20 years.  All mining equipment is depreciated using the units-of-production method based upon estimated proven and probable reserves.

Impairment of Long-Lived Assets—The Company reviews and evaluates its long-lived assets for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable.  Recoverability is measured by comparing the net book value to fair value. When the net book value exceeds fair value, an impairment loss is measured and recorded.  Mineral properties are monitored for impairment based on factors such as the Company’s continued right to explore the area, exploration reports, assays, technical reports, drill results and its continued plans to fund exploration programs on the property.  The Company uses the market approach to estimate the fair value of the properties by using a combination of the observed market value per square mile in the region and an observed market value per ounce of mineralized material.  The Company is unable to estimate undiscounted future net cash flows from its operations due to the absence of proven and probable reserves.  As such, the appropriate evidence to perform estimates of future cash flows is not available and may not be accurate in supporting the Company’s long-lived assets.  For purposes of recognition and measurement of an impairment loss, the Company groups its properties by geological mineral complex, as this represents the lowest level at which the Company allocates its exploration spending independent of other assets and liabilities.  For the recently acquired Santa Cruz exploration properties, the Company has separated its properties into two regions, due to their physical separation, for the purposes of impairment testing. The two regions are Cerro Negro and Other Santa Cruz exploration properties.

Recently Adopted Accounting Pronouncements

Comprehensive Income — In June 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income.  Under the updated guidance, an entity has the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements.  The update does not change the items reported in other comprehensive income or when an item of other comprehensive income must be reclassified to income.  The update is effective for the Company’s fiscal year beginning January 1, 2012.  The adoption had no impact on the Company’s consolidated financial position, results of operations or cash flows.

Fair Value Measurement —In May 2011, the FASB issued Accounting Standards Update No. 2011-04, Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs.  The updated guidance clarifies different components of fair value accounting including the application of the highest and best use and valuation premise concepts, measuring the fair value of an instrument classified in a reporting entity’s shareholders’ equity and disclosing quantitative information about the unobservable inputs used in a fair value measurement that is categorized in Level 3 of the fair value hierarchy.  The update is effective for the Company’s fiscal year beginning January 1, 2012.  The adoption had no impact on the Company’s consolidated financial position, results of operations or cash flows.

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CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 18,520	$ 13,416
Short-term investments		3,933
Marketable equity securities - note 3	6	1,480
Gold and silver bullion (market value - 2012 - $2,273; 2011 - $24,483) - note 4	1,690	22,810
IVA taxes receivable	8,139	2,983
Inventories - note 5	2,783	139
Prepaid and other current assets	4,882	3,122
Total current assets	36,020	47,883
Mineral property interests - note 6	785,278	245,454
Restrictive time deposits for reclamation bonding - note 6	5,190	5,190
Investment in Minera Santa Cruz S.A. - note 7	271,180
Property and equipment, net - note 8	13,483	11,772
Other assets	54	56
TOTAL ASSETS	1,111,205	310,355
Current liabilities:
Accounts payable and accrued liabilities	7,181	5,612
Current portion of asset retirement obligation - note 6	323	512
Total current liabilities	7,504	6,124
Asset retirement obligation, less current portion - note 6	6,169	5,741
Deferred income tax liability - note 2	242,761	78,786
Other liabilities	400	400
Total liabilities	256,834	91,051
Shareholders' equity:
Common stock, no par value, 500,000 shares authorized; Common: 189,610 shares as of September 30, 2012 and 136,572 shares as of December 31, 2011 issued and outstanding Exchangeable: (2012) 78,886 shares as of September 30, 2012 and nil shares as of December 31, 2011 issued and outstanding Exchangeable: (2007) nil shares as of September 30, 2012 and 3,181 shares as of December 31, 2011 issued and outstanding	1,288,478	613,831
Accumulated deficit	(433,816)	(393,238)
Accumulated other comprehensive loss	(291)	(1,289)
Total shareholders' equity	854,371	219,304
TOTAL LIABILITIES & SHAREHOLDERS' EQUITY	$ 1,111,205	$ 310,355

XML

RELATED PARTY TRANSACTIONS

9 Months Ended

Sep. 30, 2012

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS

NOTE 11   RELATED PARTY TRANSACTIONS

Since the second quarter of 2010, an aircraft owned and operated by Lexam L.P. (of which Mr. McEwen is a limited partner and beneficiary) has been made available to the Company in order to expedite business travel. In his role as Chairman and Chief Executive Officer of the Company, Mr. McEwen must travel extensively and frequently on short notice.

Mr. McEwen is able to charter the aircraft from Lexam L.P. at a preferential rate. The Company’s independent board members have approved a policy whereby only the variable expenses of operating this aircraft for business related travel are eligible for reimbursement by the Company.  The hourly amount that the Company has agreed to reimburse Lexam L.P. is under half the full cost per hour of operating the aircraft or equivalent hourly charter cost and in any event less than even Mr. McEwen’s preferential charter rate. Where possible, trips also include other company personnel, both executives and non-executives, to maximize efficiency.

For the three and nine months ended September 30, 2012, the Company incurred and paid $14,809 (2011 - $0) and $218,528 (2011 - $60,477), respectively, to Lexam L.P. for the use of this aircraft.

Ending in 2011, the Company had a management services agreement (“Services Agreement”) with 2083089 Ontario Inc. (“208”) pursuant to which the Company agreed to reimburse 208 for rent, personnel, office expenses and other administrative services on a cost recovery basis.  208 is owned by Robert McEwen, the Chairman and Chief Executive Officer of the Company and beneficial owner of more than 5% of its voting securities.  Mr. McEwen is also the Chief Executive Officer and Director of 208.   Effective January 2012, the Company no longer required the services agreement with 208 as those costs are now paid directly by the Company.  During the three and nine months ended September 30, 2011, the Company incurred and paid $18,134 and $73,628, respectively under the agreement.

Each of the above agreements were approved or ratified by the independent members of the Company’s Board of Directors.

XML

Document and Entity Information	9 Months Ended
	Sep. 30, 2012	Nov. 02, 2012
Document and Entity Information
Entity Registrant Name	McEwen Mining Inc.
Entity Central Index Key	0000314203
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		190,757,047
Exchangeable Common Stock, Shares Outstanding		77,747,371
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3

XML

OPERATING SEGMENT REPORTING

9 Months Ended

Sep. 30, 2012

OPERATING SEGMENT REPORTING

OPERATING SEGMENT REPORTING

NOTE 12   OPERATING SEGMENT REPORTING

McEwen Mining is engaged in the exploration for and production of precious metals in the U.S., Mexico and Argentina. The Company identifies its reportable segments as those consolidated operations that are currently engaged in the exploration for and production of precious metals.  Operations not actively engaged in the exploration for, or production of precious metals, are aggregated at the corporate level for segment reporting purposes.

									Corporate &
	Argentina		Mexico			U.S.			Other			Total
	(in thousands)
For the three months ended September 30, 2012
Income on investment in Minera Santa Cruz S.A. (net of amortization)	$	11,311	$	—		$	—		$	—		$	11,311
Gold and silver sales	—		456			—			—			456
Production costs applicable to sales	—		119			—			—			119
Exploration costs	1,539		3,847			999			323			6,708
Mine construction costs	—		4,671			—			—			4,671
Mine development and operating costs	—		2,406			—			—			2,406
Operating income (loss)	9,200		(12,650		)	(4,234		)	(2,870		)	(10,554		)
For the nine months ended September 30, 2012
Income on investment in Minera Santa Cruz S.A. (net of amortization)	$	14,759	$	—		$	—		$	—		$	14,759
Gold and silver sales	—		456			—			—			456
Production costs applicable to sales	—		119			—			—			119
Exploration costs	11,369		12,394			3,905			897			28,565
Mine construction costs	—		13,306			—			—			13,306
Mine development and operating costs	—		8,622			—			—			8,622
Operating income (loss)	1,231		(38,733		)	(7,864		)	(11,451		)	(56,817		)
As at September 30, 2012
Investment in Minera Santa Cruz S.A.	$	271,180	$	—		$	—		$	—		$	271,180
Mineral property interests	541,702		14,050			229,526			—			785,278
Total assets	831,129		42,717			234,804			2,555			1,111,205
									Corporate &
	Argentina		Mexico			U.S.			Other			Total
	(in thousands)
For the three months ended September 30, 2011
Exploration costs	—		$	10,822		$	4,114		$	179		$	15,115
Operating loss	—		(12,196		)	(5,736		)	(3,307		)	(21,239		)
For the nine months ended September 30, 2011
Exploration costs	—		$	22,846		$	9,066		$	738		$	32,650
Operating loss	—		(25,728		)	(11,710		)	(6,686		)	(44,124		)
As at December 31, 2011
Mineral property interests	—		$	12,750		$	232,704		$	—		$	245,454
Total assets	—		33,899			238,402			38,054			310,355

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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Gold and silver bullion, market value (in dollars)	$ 2,273	$ 24,483
Common stock, shares authorized	500,000,000	500,000,000
Common, shares issued	189,610,000	136,572,000
Common, shares outstanding	189,610,000	136,572,000
Exchangeable Series B
Exchangeable, shares issued	78,886,000
Exchangeable, shares outstanding	78,886,000
Exchangeable Series A
Exchangeable, shares issued		3,181,000
Exchangeable, shares outstanding		3,181,000

XML

MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS

9 Months Ended

Sep. 30, 2012

MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS

MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS

NOTE 6   MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS

At September 30, 2012, the Company holds mineral interests in Nevada, mineral rights in Argentina and mineral concession rights in Mexico, including the El Gallo complex.  The Magistral Mine is a former producing gold mine located within the El Gallo complex which has been held on a care and maintenance basis since 2005.  In August 2011, the Company announced that it would put this mine back into production as Phase 1 of mining operations at the El Gallo complex, and the Company had its first gold pour during September 2012.  The first gold pour produced 298 oz of gold and 129 oz of silver.  For accounting purposes, the Company has achieved commercial production in September 2012.

During the third quarter of 2012, the Company rationalized its mineral property interests in Nevada in order to focus its exploration program on more prospective areas.  As a result, the Company allowed certain claims from three of its Nevada properties in the Other United States Properties, Big Antelope Springs, Kent Springs and Buffalo Canyon, to lapse.  These mineral property interests in question were acquired in 2007 and had a carrying value of $2.9 million, which was written off during the third quarter, along with a resulting reduction in deferred tax liability and recovery of future income taxes of $1.0 million.  This resulted in a net write-off for the Company of $1.9 million which is included in the net loss for the nine months period ended September 30, 2012.

The Company increased its mineral property interests by $539.8 million, of which $541.7 million was due to the acquisition of Minera Andes as discussed in Note 2 above, to $785.3 million as at September 30, 2012 from $245.5 million at the end of 2011.  The values for the mineral properties from Argentina noted below are on a preliminary basis.

The following table summarizes all of the Company’s mineral property interests in Nevada, Argentina and Mexico (in thousands):

Name of Property/Complex	State/Province	Country	Carrying Value
Tonkin Complex	Nevada	United States	$	52,204
Gold Bar Complex	Nevada	United States	$	77,012
Limo Complex	Nevada	United States	$	50,098
Battle Mountain Complex	Nevada	United States	$	31,106
Other United States Properties	Nevada	United States	$	19,107
Los Azules Copper Project	San Juan	Argentina	$	431,190
Other Argentina Exploration Properties	San Juan	Argentina	$	7,819
Cerro Negro Region	Santa Cruz	Argentina	$	80,889
Other Argentina Exploration Properties	Santa Cruz	Argentina	$	19,194
Other Argentina Exploration Properties	Catamarca	Argentina	$	2,362
Other Argentina Exploration Properties	Chubut	Argentina	$	248
El Gallo Complex	Sinaloa	Mexico	$	9,469
Other Mexico Exploration Properties	Sinaloa	Mexico	$	4,580
Total			$	785,278

The Company is responsible for reclamation of certain past and future disturbances at its properties.  The two most significant properties subject to these obligations are the historic Tonkin property in Nevada and the Magistral mine portion of the El Gallo Complex in Mexico.  The current undiscounted estimate of the reclamation costs for existing disturbances on the Tonkin property to the degree required by the U.S. Bureau of Land Management (“BLM”) and the Nevada Department of Environmental Protection (“NDEP”) is $3.0 million.  The Company submitted a mine closure plan to the NDEP and BLM for the Tonkin property during the fourth quarter of 2010.  Based on the Company’s estimate, the change in its bonding requirements was insignificant.

As at September 30, 2012, the closure plan has already been approved by the NDEP but is still currently under review by the BLM.  It is possible that reclamation plan cost estimates and bonding requirements may increase as a result of its review.  The Company, however, is unable to meaningfully estimate possible increases at this time. The costs of undiscounted projected reclamation of El Gallo Phase 1 are currently estimated at $4.6 million.

For mineral properties in the United States, the Company maintains required reclamation bonding with various governmental agencies, and at September 30, 2012 and December 31, 2011, had cash bonding in place of $5.2 million.  Under Mexican regulations, surety bonding of projected reclamation costs is not required.

Changes in the Company’s asset retirement obligations for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended			Year Ended
	September 30,			December 31,
	2012			2011
Asset retirement obligation liability- opening balance	$	6,253		$	6,153
Settlements	(24		)	(82		)
Accretion of liability	342			524
Adjustment reflecting updated estimates	(79		)	(342		)
Asset retirement obligation liability - ending balance	$	6,492		$	6,253

It is anticipated that the capitalized asset retirement costs will be charged to expense based on the units of production method commencing with gold and silver production at the Company’s properties, if any.  There was no amortization adjustment recorded during the three and nine months ended September 30, 2012 or the year ended December 31, 2011 related to the capitalized asset retirement cost since the properties were not in operation.  Reclamation expenditures are expected to be incurred between 2012 and 2040.  As at September 30, 2012, the current portion of the asset retirement obligation was $0.3 million (December 31, 2011 — $0.5 million).

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INVENTORIES

9 Months Ended

Sep. 30, 2012

INVENTORIES

INVENTORIES

NOTE 5   INVENTORIES

Inventories at September 30, 2012 and December 31, 2011 consist of the following:

	September 30, 2012		December 31, 2011
Ore on leach pads	$	593	—
In-process inventory	1,050		—
Precious metals	31		—
Materials and supplies	1,109		139
Inventories	$	2,783	$	139

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BUSINESS ACQUISITION (Tables)

9 Months Ended

Sep. 30, 2012

BUSINESS ACQUISITION

Schedule of principal assumptions used in applying the Black-Scholes option pricing model

	January 24, 2012
Risk-free interest rate	0.02% to 0.39%
Dividend yield	n/a
Volatility factor of the expected market price of common stock	46% to 77%
Weighted-average expected life of option	1.4 years

Schedule of allocation of the purchase price

The allocation of the purchase price on a preliminary basis, based on the estimated fair value of assets acquired and liabilities assumed on January 24, 2012, is summarized in the following table (in thousands).

	Fair Value
Purchase price:
Exchangeable shares of McEwen Mining - Minera Andes Acquisition	$	664,671
Stock options to be exchanged for options of McEwen Mining	3,175
	$	667,846
Net assets acquired:
Cash and cash equivalents	$	31,385
Short-term investments	4,952
Other current assets	9,828
Inventories	1,362
Mineral property interests	541,702
Investment in Minera Santa Cruz S.A.	261,186
Equipment	1,647
Accounts payable	(5,323		)
Deferred income tax liability	(178,893		)
	$	667,846

Schedule of pro forma results for the entity, had the acquisition been completed within the period

The following table sets forth on a pro forma basis, the results of operations for McEwen Mining, had the acquisition of Minera Andes been completed on January 1, 2012 and 2011 (in thousands):

Nine months ended September 30, 2012	McEwen Mining			Minera Andes (a)		Combined
Revenue	$	15,215		$	4,979	$	20,194
Net (loss) income for the period	(40,578		)	3,498		(37,080		)

Nine months ended September 30, 2011	McEwen Mining			Minera Andes		Combined
Revenue	$	—		$	35,830	$	35,830
Net (loss) income for the period	(45,568		)	23,406		(22,162		)

(a)Nine months ended September 30, 2012 represents the results of Minera Andes’ operations from January 1, 2012 through January 24, 2012, closing date of the acquisition. Beginning January 25, 2012, the results of Minera Andes’ operations are included in McEwen Mining’s consolidated financial statements.

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FAIR VALUE ACCOUNTING

9 Months Ended

Sep. 30, 2012

FAIR VALUE ACCOUNTING

FAIR VALUE ACCOUNTING

NOTE 13   FAIR VALUE ACCOUNTING

Fair value accounting establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value.  The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements).  The three levels of the fair value hierarchy are described below:

Level 1	Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
Level 2	Quoted prices in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; and
Level 3	Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (supported by little or no market activity).

The following table identifies certain of the Company’s assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy.  As required by accounting guidance, assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

	Fair Value as at September 30, 2012
	Total		Level 1		Level 2		Level 3
	(in thousands)
Assets:
Cash and cash equivalents	$	18,520	$	18,520	$	—	$	—
Marketable equity securities	6		6		—		—
	$	18,526	$	18,526	$	—	$	—
Liabilities:
Accounts payable and accrued liabilities	$	7,181	$	—	$	7,181	$	—

	Fair Value as at December 31, 2011
	Total		Level 1		Level 2		Level 3
	(in thousands)
Assets:
Cash and cash equivalents	$	13,416	$	13,416	$	—	$	—
Short-term investments	3,933		3,933		—		—
Marketable equity securities	1,480		897		583		—
	$	18,829	$	18,246	$	583	$	—
Liabilities:
Accounts payable and accrued liabilities	$	5,612	$	—	$	5,612	$	—

The Company’s cash and cash equivalents is classified within Level 1 of the fair value hierarchy because it is valued using quoted market prices.  The fair value of this balance approximates the carrying amounts due to its short-term nature and historically negligible credit losses.  The cash equivalent instruments that are valued based on quoted market prices in active markets are primarily money market securities.

The Company’s marketable equity securities which were exchange traded are valued using quoted market prices in active markets and as such are classified within Level 1 of the fair value hierarchy.  The fair value of the marketable equity securities is calculated as the quoted market price of the marketable equity security multiplied by the quantity of shares formerly held by the Company.  The other portion of the Company’s marketable equity securities, which were comprised of share purchase warrants not listed on a public exchange, are valued using option pricing models.  Valuation models require a variety of inputs, including strike price, contractual terms, market prices, measures of volatility and interest rate.  Because the inputs are derived from observable market data, the other portion of the marketable equity securities is classified within Level 2 of the fair value hierarchy.

The fair value of accounts payable and accrued liabilities approximates the carrying amounts due to their short-term nature.

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SHAREHOLDERS' EQUITY

9 Months Ended

Sep. 30, 2012

SHAREHOLDERS' EQUITY

SHAREHOLDERS' EQUITY

NOTE 9   SHAREHOLDERS’ EQUITY

At the special meeting on January 19, 2012, the shareholders of the Company approved the Second Amended and Restated Articles of Incorporation which, among other things, increased the authorized capital of the Company to 500,000,000 shares of common stock, and added one share of Series B Special Voting Preferred Stock.

As discussed in Note 2 above, on January 24, 2012, the Company issued 127.3 million 2012-Exchangeable Shares in connection with the acquisition of Minera Andes.

During the nine months ended September 30, 2012, 51.6 million exchangeable shares were converted into common stock, of which 48.4 million were related to the 2012-Exchangeable Shares.  At September 30, 2012, total outstanding exchangeable shares not exchanged totaled 78.9 million.

On March 26, 2012, the Company announced that its subsidiary, US Gold Canadian Acquisition Corporation, had established a redemption date of May 30, 2012, in respect of all of its outstanding exchangeable shares relating to the acquisitions from 2007 (“2007-Exchangeable Shares”).  As of May 30, 2012, 2.5 million of the remaining 2007-Exchangeable Shares were redeemed for issuance of 2.5 million shares of common stock and there were nil outstanding as at September 30, 2012.

During the nine months ended September 30, 2012, the Company issued 1.3 million shares of common stock upon exercise of stock options under the Equity Incentive Plan as well as for exercise of stock options assumed by the Company in the acquisition of Minera Andes, at exercise prices ranging from $0.91 to $3.35 per share for proceeds of $3.6 million.  During the same period, the Company issued 83,000 shares of common stock as part payment for mining concessions in Mexico.

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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE

9 Months Ended

Sep. 30, 2012

INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE

INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE

NOTE 7   INVESTMENT IN MINERA SANTA CRUZ S.A. (“MSC”) — SAN JOSÉ MINE

As discussed above in Note 1, the Company acquired a 49% interest in MSC, owner and operator of the San José Silver-Gold Mine in Santa Cruz, Argentina.  The Company’s share of earnings and losses from its investment in MSC is included in the consolidated statement of operations and comprehensive loss and includes 49% of MSC’s net income of $12.9 million and $18.5 million for the three months ended and period ended September 30, 2012, respectively.  Since the acquisition closed on January 24, 2012, MSC reported to the Company only its net income from January 25, 2012 to September 30, 2012.

Based on the preliminary purchase price allocation, the investment in MSC was originally attributed with an estimated fair value of $225.0 million during the first and second quarter of 2012.  During the third quarter of 2012, the preliminary purchase price allocation was adjusted and increased the estimated fair value of the investment in MSC to $261.2 million.  The adjustment affected the composition of the fair value allocation to MSC’s assets, resulting in a reduction in amortization reported for the first and second quarter of 2012.  Below is a reconciliation of the adjustment for the first and second quarter of 2012.

	For three months ended			For three months ended			For the six months ended
	March 31, 2012			June 30, 2012			June 30, 2012
	(in thousands)
Amortization of fair value increments, as reported	$	2,804		$	1,803		$	4,607
Adjustment	(1,914		)	(544		)	(2,458		)
Amortization of fair value increments, as adjusted	$	890		$	1,259		$	2,149
Net loss, as reported	$	(19,202	)	$	(21,251	)	$	(40,453	)
Adjustment	1,914			544			2,458
Net loss, as adjusted	$	(17,288	)	$	(20,707	)	$	(37,995	)

The change in the Company’s investment in MSC during the period ended September 30, 2012 is summarized as follows:

	As at
	September 30, 2012
	(in thousands)
Investment in MSC, beginning of period	$	—
Fair value of investment in MSC from acquisition of Minera Andes	261,186
Income from equity investment	18,505
Amortization of fair value increments	(3,746		)
Dividends	(4,765		)
Investment in MSC, end of period	$	271,180

	Three Months Ended			Period Ended
	September 30, 2012			September 30, 2012
	(in thousands)			(in thousands)
Summary of MSC’s financial information from operations
Sales - MSC 100%	$	116,299		$	212,902
Net income - MSC 100%	26,343			37,765
McEwen Mining’s portion - 49%	12,908			18,505
Income on investment in MSC	$	12,908		$	18,505
Amortization of fair value increments	(1,597		)	(3,746		)
Income on investment in MSC, net of amortization	$	11,311		$	14,759

As at September 30, 2012, MSC had current assets of $151.7 million, total assets of $839.8 million, current liabilities of $99.4 million and total liabilities of $303.0 million.  These balances include the increase in fair value and amortization of the fair value increments arising from the preliminary purchase price allocation.

On July 30, 2012, the Company received a dividend from MSC of 9.8 million Argentine pesos ($2.2 million).

On September 28, 2012, MSC declared a dividend of 25.0 million Argentine pesos ($5.3 million), of which 12.25 million Argentine pesos ($2.6 million) was payable to the Company, and was subsequently received on October 4, 2012.

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PROPERTY AND EQUIPMENT

9 Months Ended

Sep. 30, 2012

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT

NOTE 8   PROPERTY AND EQUIPMENT

At September 30, 2012 and December 31, 2011, property and equipment consisted of the following (in thousands):

	September 30, 2012			December 31, 2011
Trucks and trailers	$	1,417		$	1,247
Office furniture and equipment	1,054			638
Drill rigs	1,869			998
Building	1,469			853
Land	8,669			8,619
Mining equipment	1,026			956
Inactive milling equipment	644			778
Subtotal	$	16,148		$	14,089
Less: accumulated depreciation	(2,665		)	(2,317		)
Total	$	13,483		$	11,772

As a result of the acquisition of Minera Andes, the Company increased its net property and equipment by $1.6 million during the first quarter of 2012.  In addition, during the first quarter of 2012, the Company invested an additional $1.0 million in drill rigs in Argentina.

During the second quarter of 2012, the Company made a decision to sell four drill rigs, which were purchased during the first quarter of 2012, and their related accessories, with a net realizable value of $1.8 million, net of impairment of $0.2 million, from its operations in Argentina since they no longer met the Company’s needs.  During the third quarter of 2012, these assets were sold for proceeds of $1.8 million.

During 2012, the Company also sold some of its inactive milling equipment, mobile homes and vehicles from its Tonkin property in Nevada, with a net book value of $0.1 million for net proceeds of $1.4 million.

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STOCK-BASED COMPENSATION

9 Months Ended

Sep. 30, 2012

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION

NOTE 10   STOCK-BASED COMPENSATION

On January 19, 2012, at a special meeting of shareholders, the Company’s shareholders approved amendments to the Equity Incentive Plan to, among other things, increase the number of shares of common stock reserved for issuance thereunder from 9 million to 13.5 million shares.

During the first nine months of 2012, the Company granted 0.3 million of stock options to the Company’s Chief Operating Officer, as part of his employment contract, at an exercise price of $5.80 per share.  During the same period in 2011, the Company granted stock options to certain employees, directors and consultants for an aggregate of 0.9 million shares of common stock at an exercise price of $7.10 per share.  The options vest equally over a three year period if the individual remains affiliated with the Company (subject to acceleration of vesting in certain events) and are exercisable for a period of 10 years from the date of issue.

The Company estimates the fair value of each stock option at the grant date by using the Black-Scholes option-pricing model.  During the three and nine months ended September 30, 2012, the Company recorded stock option expense of $0.7 million and $2.8 million, respectively.  The stock option expense reported during the three and nine months ended September 30, 2012 also included $0.1 million and $1.1 million, respectively, resulting from stock options assumed by the Company in the acquisition of Minera Andes.

During the three and nine months ended September 30, 2011, the Company recorded stock option expense of $0.7 million and $1.9 million, respectively.

The principal assumptions used in applying the Black-Scholes option pricing model for the awards for the three and nine months ended September 30, 2012 and 2011 were as follows:

	Three Months Ended		Nine Months Ended
	September 30, 2012	September 30, 2011	September 30, 2012	September 30, 2011
Risk-free interest rate	—	—	0.97%	1.82% to 2.33%
Dividend yield	—	—	n/a	n/a
Volatility factor of the expected market price of common stock	—	—	75%	90% to 100%
Weighted-average expected life of option	—	—	6.0 years	6.6 years
Weighted-average grant date fair value	—	—	$3.80	$4.97

The following tables summarize information about stock options outstanding and exercisable at September 30, 2012 for the Company’s Option Plan, the replacement options from the acquisition of Nevada Pacific Gold Ltd. in 2007, and the replacement options from the acquisition of Minera Andes in 2012. C$ refers to Canadian dollars.

McEwen Mining

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
$0.00-$2.00	1,339,000	$	1.05	6.19	1,339,000	$	1.05	6.19
$2.01-$4.00	1,030,800	$	2.57	6.05	827,467	$	2.59	5.73
$4.01-$6.00	366,500	$	5.66	8.49	66,500	$	5.01	4.70
$6.01-$8.31	886,333	$	7.17	8.19	331,664	$	7.28	7.74

Nevada Pacific Gold Ltd.

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
C$0.00-C$5.00	271,543	C$	4.54	3.51	271,543	C$	4.54	3.51
C$5.01-C$6.70	123,050	C$	5.96	2.26	123,050	C$	5.96	2.26

Minera Andes

	Options Outstanding				Options Exercisable
				Weighted				Weighted
		Weighted		Average		Weighted		Average
		Average		Remaining		Average		Remaining
Range of	Number	Exercise		Contractual	Number	Exercise		Contractual
Exercise Price	Outstanding	Price		Life (Years)	Exercisable	Price		Life (Years)
C$0.00-C$2.22	220,500	C$	1.67	1.33	220,500	C$	1.67	1.33
C$2.23-C$3.02	525,150	C$	2.40	2.31	377,101	C$	2.45	2.19

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2)	9 Months Ended
	Sep. 30, 2012 item
Gold
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Quantity produced (in ounces)	298
Option to Sell Prior to Completion of Refining	90.00%
Period of Completion of Refining	15 days
Net Smelter Return from Royalty Agreement	3.50%
Gold | Production up to 30000 ounces
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Net Smelter Return from Royalty Agreement	1.00%
Gold | Production between 30001 to 380000 ounces
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Net Smelter Return from Royalty Agreement	3.50%
Gold | Production above 380000 ounces
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Net Smelter Return from Royalty Agreement	1.00%
Silver
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Option to Sell Prior to Completion of Refining	90.00%
Period of Completion of Refining	15 days

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FAIR VALUE ACCOUNTING (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets:
Short-term investments		$ 3,933
Marketable equity securities	6	1,480	4,576
Recurring | Total
Assets:
Cash and cash equivalents	18,520	13,416
Short-term investments		3,933
Marketable equity securities	6	1,480
Assets	18,526	18,829
Liabilities:
Accounts payable and accrued liabilities	7,181	5,612
Recurring | Level 1
Assets:
Cash and cash equivalents	18,520	13,416
Short-term investments		3,933
Marketable equity securities	6	897
Assets	18,526	18,246
Recurring | Level 2
Assets:
Marketable equity securities		583
Assets		583
Liabilities:
Accounts payable and accrued liabilities	$ 7,181	$ 5,612

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SUBSEQUENT EVENT

9 Months Ended

Sep. 30, 2012

SUBSEQUENT EVENT

SUBSEQUENT EVENT

NOTE 15   SUBSEQUENT EVENT

On October 29, 2012, the Company announced the launch of a transferrable rights offerings backstopped by Mr. McEwen, the Company’s Chairman and CEO, in which all existing holders of common stock of McEwen Mining and existing holders of the 2012-Exchangeable Shares have the opportunity to participate on an equal and proportional basis in purchasing additional Common Shares or 2012-Exchangeable Shares at a price of $2.25 (or C$2.24) per share, which represents a 50% discount to the closing share price prior to the announcement.  Shareholders will receive one right for each Common Share or 2012-Exchangeable Share and 10 rights are needed to purchase an additional share of the same class.  The Company will raise approximately $60 million in gross proceeds with this transaction.  The record date for shareholders of the Company to receive rights is November 8, 2012 and the rights will expire on December 4, 2012.  In the interim period, the rights on the Common Shares will trade publicly on the NYSE and TSX and the rights on the 2012-Exchangeable Shares will trade on the TSX.

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INVENTORIES (Tables)

9 Months Ended

Sep. 30, 2012

INVENTORIES

Schedule of inventories

	September 30, 2012		December 31, 2011
Ore on leach pads	$	593	—
In-process inventory	1,050		—
Precious metals	31		—
Materials and supplies	1,109		139
Inventories	$	2,783	$	139

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RELATED PARTY TRANSACTIONS (Details) (USD $)	3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended
	Sep. 30, 2012 Lexam L.P.	Sep. 30, 2012 Lexam L.P.	Sep. 30, 2011 Lexam L.P.	Sep. 30, 2012 Mr. McEwen	Sep. 30, 2011 208	Sep. 30, 2011 208
RELATED PARTY TRANSACTIONS
Amount of expenses incurred and paid	$ 14,809	$ 218,528	$ 60,477		$ 18,134	$ 73,628
Minimum percentage interest of voting securities beneficially owned by related party				5.00%

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INVENTORIES (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
INVENTORIES
Ore on leach pads	$ 593
In-process inventory	1,050
Precious metals	31
Materials and supplies	1,109	139
Inventories	$ 2,783,000	$ 139,000

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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at Dec. 31, 2010	$ 173,280	$ 504,389	$ 257	$ (331,366)
Balance (in shares) at Dec. 31, 2010		122,186,000
Increase (Decrease) in Shareholders' Equity
Stock-based compensation	1,905	1,905
Sale of shares for cash, net of issuance costs	105,415	105,415
Sale of shares for cash, net of issuance costs (in shares)		17,250,000
Exercise of stock options	412	412
Exercise of stock options (in shares)		163,000
Exercise of stock options from 2007 acquisition and Minera Andes Inc.	361	361
Exercise of stock options from 2007 acquisition and Minera Andes Inc. (in shares)		70,000
Shares issued for Mexico mining concessions	582	582
Shares issued for Mexico mining concessions (in shares)		84,000
Unrealized loss on marketable equity securities	(777)		(777)
Net loss	(45,568)			(45,568)
Balance at Sep. 30, 2011	235,610	613,064	(520)	(376,934)
Balance (in shares) at Sep. 30, 2011		139,753,000
Balance at Dec. 31, 2011	219,304	613,831	(1,289)	(393,238)
Balance (in shares) at Dec. 31, 2011		139,753,000
Increase (Decrease) in Shareholders' Equity
Stock-based compensation	2,845	2,845
Issuance of exchangeable shares to acquire Minera Andes Inc.	664,671	664,671
Issuance of exchangeable shares to acquire Minera Andes Inc. (in shares)		127,331,000
Assumption of stock options in connection with the acquisition of Minera Andes Inc.	3,175	3,175
Exercise of stock options	721	721
Exercise of stock options (in shares)	1,300,000	387,000
Exercise of stock options from 2007 acquisition and Minera Andes Inc.	2,844	2,844
Exercise of stock options from 2007 acquisition and Minera Andes Inc. (in shares)		942,000
Shares issued for Mexico mining concessions	391	391
Shares issued for Mexico mining concessions (in shares)	83,000	83,000
Unrealized loss on marketable equity securities	(2)		(2)
Reclassification of unrealized loss on marketable equity securities disposed of during the period, net of tax	(993)		(993)
Other-than-temporary impairment on marketable equity securities	1,993		1,993
Net loss	(40,578)			(40,578)
Balance at Sep. 30, 2012	$ 854,371	$ 1,288,478	$ (291)	$ (433,816)
Balance (in shares) at Sep. 30, 2012		268,496,000

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GOLD AND SILVER BULLION

9 Months Ended

Sep. 30, 2012

GOLD AND SILVER BULLION

GOLD AND SILVER BULLION

NOTE 4   GOLD AND SILVER BULLION

The Company invested a portion of its cash in physical gold and silver bullion.  Below is the balance of its holdings of gold and silver as at September 30, 2012 and December 31, 2011.

	September 30, 2012				December 31, 2011
	Gold		Silver		Gold		Silver
	(dollars in thousands, except ounces and per ounce)
# of ounces	793		24,969		5,656		552,812
Average cost per ounce	$	1,278.63	$	27.08	$	1,278.63	$	28.18
Total cost	$	1,014	$	676	$	7,232	$	15,578
Fair value per ounce	$	1,776.00	$	34.65	$	1,574.50	$	28.18
Total fair value	$	1,408	$	865	$	8,905	$	15,578

The fair value of gold and silver was based on the daily London P.M. fix as at September 30, 2012 and December 31, 2011.  Since ASC Topic 815 does not consider gold and silver to be readily convertible to cash, the Company carries these assets at the lower of cost or market.

During the first nine months of 2012, the Company sold 4,863 ounces of gold and 527,843 ounces of silver with a cost of $6.2 million and $14.5 million, respectively.  Changes in the Company’s holdings of gold and silver for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended September 30, 2012									Year Ended December 31, 2011
	Gold			Silver			Total			Gold			Silver			Total
Opening Balance	$	7,232		$	15,578		$	22,810		$	4,569		$	—		$	4,569
Purchases	—			—			—			7,387			23,912			31,299
Proceeds from sale	(7,982		)	(15,854		)	(23,836		)	(6,218		)	(5,521		)	(11,739		)
Gain on sale	1,764			1,311			3,075			1,494			581			2,075
Unrealized loss	—			(359		)	(359		)	—			(3,394		)	(3,394		)
Ending Balance	$	1,014		$	676		$	1,690		$	7,232		$	15,578		$	22,810

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MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS (Tables)

9 Months Ended

Sep. 30, 2012

MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS

Summary of mineral property interests

The following table summarizes all of the Company’s mineral property interests in Nevada, Argentina and Mexico (in thousands):

Name of Property/Complex	State/Province	Country	Carrying Value
Tonkin Complex	Nevada	United States	$	52,204
Gold Bar Complex	Nevada	United States	$	77,012
Limo Complex	Nevada	United States	$	50,098
Battle Mountain Complex	Nevada	United States	$	31,106
Other United States Properties	Nevada	United States	$	19,107
Los Azules Copper Project	San Juan	Argentina	$	431,190
Other Argentina Exploration Properties	San Juan	Argentina	$	7,819
Cerro Negro Region	Santa Cruz	Argentina	$	80,889
Other Argentina Exploration Properties	Santa Cruz	Argentina	$	19,194
Other Argentina Exploration Properties	Catamarca	Argentina	$	2,362
Other Argentina Exploration Properties	Chubut	Argentina	$	248
El Gallo Complex	Sinaloa	Mexico	$	9,469
Other Mexico Exploration Properties	Sinaloa	Mexico	$	4,580
Total			$	785,278

Schedule of changes in asset retirement obligations

Changes in the Company’s asset retirement obligations for the nine months ended September 30, 2012 and year ended December 31, 2011 are as follows (in thousands):

	Nine Months Ended			Year Ended
	September 30,			December 31,
	2012			2011
Asset retirement obligation liability- opening balance	$	6,253		$	6,153
Settlements	(24		)	(82		)
Accretion of liability	342			524
Adjustment reflecting updated estimates	(79		)	(342		)
Asset retirement obligation liability - ending balance	$	6,492		$	6,253

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BUSINESS ACQUISITION (Details 2) (USD $)	9 Months Ended				9 Months Ended		1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jan. 24, 2012	Dec. 31, 2011	Sep. 30, 2012 McEwen Mining	Sep. 30, 2011 McEwen Mining	Jan. 31, 2012 Minera Andes	Jun. 30, 2012 Minera Andes	Sep. 30, 2012 Minera Andes	Sep. 30, 2011 Minera Andes	Jan. 24, 2012 Minera Andes	Dec. 31, 2011 Minera Andes General and administrative expenses	Sep. 30, 2012 Minera Andes Acquisition cost
BUSINESS ACQUISITION
Market price of common stock (in dollars per share)			$ 5.22
BUSINESS ACQUISITION
Total transaction costs									$ 5,300,000			$ 3,900,000	$ 1,400,000
Purchase price:
Exchangeable shares of McEwen Mining - Minera Andes Acquisition	664,671,000						664,671,000
Stock options to be exchanged for options of McEwen Mining	3,175,000						3,175,000
Purchase price											667,846,000
Net assets acquired:
Cash and cash equivalents											31,385,000
Short-term investments											4,952,000
Other current assets											9,828,000
Inventories											1,362,000
Mineral property interests											541,702,000
Investment in Minera Santa Cruz S.A.											261,186,000
Equipment											1,647,000
Accounts payable											(5,323,000)
Deferred income tax liability											(178,893,000)
Purchase price											667,846,000
Excess of purchase consideration over carrying value of the underlying assets for tax purposes											511,100,000
Deferred income tax liability	242,761,000			78,786,000
Deferred income tax recovery								5,400,000	13,700,000
Deferred income tax liability related to fluctuations in the foreign exchange rates									165,200,000
Unaudited Pro Forma Results
Revenue	20,194,000	35,830,000			15,215,000				4,979,000	35,830,000
Net (loss) income for the period	$ (37,080,000)	$ (22,162,000)			$ (40,578,000)	$ (45,568,000)			$ 3,498,000	$ 23,406,000

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COMPARATIVE FIGURES

9 Months Ended

Sep. 30, 2012

COMPARATIVE FIGURES

COMPARATIVE FIGURES

NOTE 14   COMPARATIVE FIGURES

Certain prior year information was reclassified to conform with the current year’s presentation.