EX-99.1 2 a12-9699_1ex99d1.htm EX-99.1

Exhibit 99.1

April 13, 2012

Dear McEwen Mining Shareholders,

Please find the attached El Gallo Complex development update.

Exciting new developments at the El Gallo Complex this week: Sinaloa State Governor Mario Lopez tours the project with Rob McEwen.

First gold pour only a few months away!

Key development highlights over the past two weeks are:

· Installation of process plant equipment underway

· Retaining wall for crushing plant complete

· Crushing plant equipment arrives onsite

· Heap leach pad expansion 40% complete

· 170,000 tonnes of ore at 1.48 gpt stockpiled since December

To view the El Gallo Development Photo Update, please click here.

For further information contact: |  |
Jenya Meshcheryakova Investor Relations Tel: (647) 258-0395 ext 410 Toll Free: (866) 441-0690 Fax: (647) 258-0408 |  | Mailing Address 181 Bay Street Suite 4750 Toronto ON M5J 2T3 P.O. Box 792 E-mail: info@mcewenmining.com

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| MUX El Gallo Complex Development Photo Update April 13, 2012 MCEWEN MINING

| 2 Rob McEwen at the inaugural road opening ribbon cutting.

| 3 Local attendees helping to commemorate road opening.

| 4 Rob McEwen, beside Governor of Sinaloa State, Mario Lopez, addresses crowd during inaugural road opening ceremony.

| 5 Mario Lopez addresses local town and discusses future employment opportunities for the area.

| 6 Local attendees helping to commemorate road opening.

| 7 Rob McEwen, Mario Lopez and Gloria Felix (Mayor of Municipality) participating in celebration.

| 8 Rob McEwen, Mario Lopez and Gloria Felix (Mayor of Municipality) participating in celebration.

| 9 Mexico staff providing operational tour to government officials of El Gallo Phase 1 construction.

| 10 Rob McEwen reviewing progress at El Gallo Phase 1.

| 11 New administration building nears completion.

| 12 New ADR process plant equipment being installed.

| 13 ADR process plant foundation complete.

| 14 New crushing equipment being assembled.

| 15 Retaining wall for crushing plant now complete.

| 16 Heap leach pad expansion 40% complete.

| 17 The Big Dig: 170,000 tonnes of ore at 1.48 gpt stockpiled since December.

| 18 Mining continues at the Sargrado Corazon deposit.

| 19 Mining at El Gallo Phase 1 operating at full capacity.

| 20 Back filling in foreground and mining in background.

| MUX For further information please contact: Jenya Meshcheryakova Investor Relations Tel: (647) 258-0395 Toll Free: (866) 441- 0690 Fax: (647) 258-0408 Email: info@mcewenmining.com MCEWEN MINING