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. The Company operates in Argentina, Mexico, and the United States. It owns a 49% interest in Minera Santa Cruz S.A. (“MSC”), owner and operator of the producing San José mine in Santa Cruz, Argentina, which is controlled by the majority owner of the joint venture, Hochschild Mining plc (‘‘Hochschild’’). It also owns the El Gallo 1 Mine in Sinaloa, Mexico. In addition to its operating properties, the Company also holds interests in numerous exploration stage properties and projects in Argentina, Mexico and the United States. 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 six months ended June 30, 2015 and 2014, the Consolidated Balance Sheets as at June 30, 2015 (unaudited) and December 31, 2014, the unaudited Consolidated Statement of Changes in Shareholders’ Equity for the six months ended June 30, 2015 and 2014, and the unaudited Consolidated Statements of Cash Flows for the six months ended June 30, 2015 and 2014, 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 annual report on Form 10-K for the year ended December 31, 2014. The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All inter-company accounts and transactions have been eliminated. Recently Adopted Accounting Pronouncements Presentation of Financial Statements and Property, Plant and Equipment — Reporting Discontinued Operations and Disclosures of Components of an Entity: In April 2014, Accounting Standards Codification (“ASC”) 205 and ASC 360 guidance were amended to change the requirements for reporting discontinued operations in ASC 205-20. A disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations only if the disposal represents a strategic shift that has, or will have, a major effect on an entity’s operations and financial results when any of the following occurs: (1) the component of an entity or group of components of an entity meets the criteria in ASC 205-20-45-1E to be classified as held for sale; (2) the component of an entity or group of components of an entity is disposed of by sale; or (3) the component of an entity or group of components of an entity is disposed of other than by sale. The update is effective for the Company’s fiscal year beginning January 1, 2015. The new guidance did not have an impact on the Company’s consolidated financial statements. Recently Issued Accounting Pronouncements Presentation of Financial Statements — Going Concern — Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern: In August 2014, ASC 205-40 guidance was amended to provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. The amendments require management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles that are currently in U.S. auditing standards. Specifically, the amendments (1) provide a definition of the term substantial doubt, (2) require an evaluation every reporting period including interim periods, (3) provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures when substantial doubt is not alleviated, and (6) require an assessment for a period of one year after the date that the financial statements are issued (or available to be issued). The amendments in this update shall be effective for annual periods ending after December 15, 2016, and interim periods within annual periods beginning after December 15, 2016, with early application permitted. The Company is evaluating the effect that the updated standard will have on its consolidated financial statements. Revenue from Contracts with Customers: In May 2014, ASC 606 was issued related to revenue from contracts with customers. Under this guidance, revenue is recognized when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. The updated standard will replace most existing revenue recognition guidance under U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. Early adoption is not permitted. The standard will be effective for fiscal years beginning after December 15, 2017, including interim reporting periods within that year. The Company is evaluating the effect that the updated standard will have on its consolidated financial statements. |