Ms. Sheena Scotland reports

MCEWEN MINING INC.: EL GALLO REGIONAL EXPLORATION; TWIN DOMES DRILLING INTERSECTS SIGNIFICANT NEAR SURFACE GOLD MINERALIZATION

McEwen Mining Inc. has released core drill results from its new Twin Domes discovery, including 9.7 grams per tonne (g/t) gold over 10.3 metres and five g/t gold over 16.8 metres. These results are follow-ups to the discovery holes announced in April, which intersected 8.8 g/t gold over 9.7 metres and 9.8 g/t gold over 4.6 metres, in addition to a trench that returned 20.9 g/t gold over 12.7 metres. The company believes Twin Domes is attractive due to its higher gold grades and its close proximity to the company's process plant.

Twin Domes is located 17 kilometres (10.5 miles) northwest of the company's El Gallo 1 heap leach mine. Initial test results show that the gold mineralization at Twin Domes is potentially amenable to heap leaching, which would allow it to be processed at El Gallo 1. Ten additional core holes were completed in this recent drilling. Although it is early, McEwen Mining is highly encouraged by these results and believes Twin Domes could have a positive impact on the El Gallo 1 mine. Highlights are shown in the associated table

                     TWIN DOMES EXPLORATION HIGHLIGHTS

                          From             To      Thickness     Gold grade
                           (m)            (m)            (m)          (g/t)

TDX011                    39.8           45.0            5.2            7.1
Including                 43.9           45.0            1.1           24.9
TDX012                     1.0            5.5            4.5           10.0
And                       25.9           33.4            7.5            1.9
TDX015                    17.2           27.5           10.3            9.7
Including                 24.8           25.4            0.7          135.5
TDX016                    18.4           27.5            9.1            1.7
TDX017                    14.5           24.5           10.1            4.0
Including                 16.4             17            0.7           51.1
TDX018                     7.3           24.1           16.8            5.0
Including                 12.8           14.0            1.2           21.1
Including                 18.3           21.1            2.8           14.9

To date, gold mineralization at Twin Domes has been identified from surface to a depth of 45 metres. The known length (or strike) of the zone is approximately 275 metres. A total of 20 additional core holes have been planned in order to follow up on these results. This program will start next week.

McEwen Mining also announces its technical report titled "Technical report on San Jose silver-gold mine, Santa Cruz, Argentina," dated Aug. 15, 2013, has been filed on SEDAR pursuant to the National Instrument 43-101 requirements. The technical report includes the updated resource estimates previously announced by the company in a press release dated March 18, 2013. The technical report has been filed under McEwen Mining's profile on SEDAR and can also be viewed on the company's website.

 RECENTLY COMPLETED HOLES FROM TWIN DOMES (LOCATED IN EL GALLO COMPLEX)

                                                                   Gold
                      From             To      Thickness          grade
Hole                   (m)            (m)            (m)          (g/t)

TDX009                   -              -              -              -
TDX010                53.1           55.2            2.1            3.2
TDX011                39.8           45.0            5.2            7.1
Including             43.9           45.0            1.1           24.9
TDX012                 1.0            5.5            4.5           10.0
And                   25.9           33.4            7.5            1.9
TDX013                28.4           32.3            3.9            3.7
Including             30.4           31.2            0.8           13.6
TDX014                   -              -              -              -
TDX015                17.2           27.5           10.3            9.7
TDX016                18.4           27.5            9.1            1.7
TDX017                14.5           24.5           10.1            4.0
Including             16.4             17            0.7           51.1
TDX018                 7.3           24.1           16.8            5.0

We seek Safe Harbor.