Keystone Mine, Mt. Emmons – Mine Tunnel Repairs & Maintenance
Client: Mt. Emmons Mining, a subsidiary of Phelps-Dodge
Location: Gunnison County, Colorado, United States

In the summer of 2002 MES was contracted to perform timbering and cleanup of fallen ground at the 2000 Level Tunnel and the 2160 Level Tunnels in the Keystone Mine (Mt. Emmons).