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McEwen Mining Provides Fourth Quarter & Full Year 2012 Operational and Development Update

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El Gallo Phase 1 generated $2.1 million in operating cash flows, after incurring costs associated with removal of overburden to access future mineralization, during the fourth quarter. During the quarter, the mine was focused on increasing throughput levels towards its designed rate. The mine is now operating at full capacity.

Major expenditures during the quarter included $13.1 million for exploration at Los Azules, $3.8 million for exploration at the Company's other projects, and $0.7 million related to El Gallo Phase 2.

San Jose Mine, Argentina (49%)

Solid Year of Production

Final production results for McEwen Mining's share in the San Jose mine during the fourth quarter, was 11,024 gold ounces and 757,009 silver ounces, representing 25,582 gold equivalent ounces (converting the silver into gold using a 52:1 exchange ratio).

For the full year, San Jose met its production guidance, with McEwen Mining's share totaling 42,026 gold ounces and 2,916,742 silver ounces or 98,117 gold equivalent ounces. In 2013, McEwen Mining's share of production has been forecasted at 102,700 gold equivalent ounces (45,000 gold ounces and 3,000,000 silver ounces). Production is expected to increase in 2013 as an optimization plan was completed that will increase processing capacity by +10% from 1,500 tonnes to 1,650 tonnes per day.

For the quarter, cash costs equaled $728 per gold equivalent ounce. Cash costs were flat versus the third quarter and less than the first half of the year, as the team at San Jose has done an excellent job dealing with industry-wide cost escalation. For the full year, cash costs were below guidance of $750 per gold equivalent ounce at $739. Cash costs and all-in sustaining costs per equivalent gold ounce for 2013 have been estimated at $725 - $825 and $1,150 - $1,275, respectively.

An updated reserve and resource estimate for the mine will be released in the coming weeks. The updated resource will include approximately 98,000 meters of additional core drilling.

                     San Jose Mine Production Comparison--------------------------------------------------------------------------------------------------------------------------------------------------------                               Full-Year  Full-Year  4th Quarter 3rd Quarter     San Jose - 100%(i)             2012        2011        2012        2012----------------------------------------------------------------------------Ore production (tonnes)          509,851     462,825     128,940     136,577----------------------------------------------------------------------------Average grade gold (gpt)            5.79        5.86        6.00        5.24----------------------------------------------------------------------------Average head silver (gpt)            417         444         422         402----------------------------------------------------------------------------Average gold recovery (%)           90.4        92.9        90.4        91.1----------------------------------------------------------------------------Average silver recovery (%)         87.0        88.8        88.3        87.9----------------------------------------------------------------------------Gold produced (ounces)            85,786      80,948      22,498      20,967----------------------------------------------------------------------------Silver produced (ounces)       5,952,534   5,869,564   1,544,917   1,552,000----------------------------------------------------------------------------Gold equivalent(1) produced (ounces)                        200,240     193,824      52,208      50,813----------------------------------------------------------------------------Gold sold (ounces)                84,292      82,420      23,161      29,126----------------------------------------------------------------------------Silver sold (ounces)           5,897,099   6,087,525   1,553,077   2,165,000----------------------------------------------------------------------------Co-product total cash cost Au (US$)                            760         628         770         766----------------------------------------------------------------------------Co-product total cash cost Ag (US$)                          13.90       13.63       13.35       14.66----------------------------------------------------------------------------Gold equivalent total cash cost (US$)                          739         675         728         764----------------------------------------------------------------------------Co-product all-in sustaining cash cost Au (US$)                1,208         962       1,228       1,126----------------------------------------------------------------------------Co-product all-in sustaining cash cost Ag (US$)                22.11       20.89       21.29       21.54----------------------------------------------------------------------------Gold equivalent co-product all-in sustaining cash cost (US$)                             1,174       1,035       1,160       1,122----------------------------------------------------------------------------  McEwen Mining - 49% Share----------------------------------------------------------------------------Gold produced (ounces)            42,026      39,665      11,024      10,274----------------------------------------------------------------------------Silver produced (ounces)       2,916,742   2,876,086     757,009     760,480----------------------------------------------------------------------------Gold equivalent(1) produced (ounces)                         98,117      94,974      25,582      24,898--------------------------------------------------------------------------------------------------------------------------------------------------------(i)McEwen Mining holds a 49% attributable interest in the San Jose mine.

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