Rio Grande Announces Share Consolidation Effective May 13, 2013

Rio Grande Mining Corp.

Suite 1128, 789 West Pender Street Vancouver, BC, V6C 1H5 Tel: (604) 669-9330 Fax: (604) 669-9335

FOR IMMEDIATE RELEASE May 13, 2013

RIO GRANDE ANNOUNCES SHARE CONSOLIDATION EFFECTIVE MAY 13, 2013

Vancouver, BC, May 13, 2013: Rio Grande Mining Corp. (RGV - TSX-V) (the “Company”) announces that at market opening today, the Company’s common shares will begin trading on a seven (7) old for one (1) new share basis. The Company’s trading symbol will remain RGV. Registered shareholders will receive a letter of transmittal from TMX Equity Transfer Services (formerly Equity Financial Trust), the Company’s transfer agent, with instructions for exchanging their pre-consolidated shares. Shareholders who hold their common shares through a broker or other intermediary and do not have common shares registered in their name, will not need to complete a letter of transmittal.

On behalf of the Board of Directors,

John Bevilacqua President & CEO Rio Grande Mining Corp.

604 669 9330

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.