The Keep Cool Mine
The Keep Cool Mine lies atop the Weber shear and has been explored by 5 adits and 3,000 feet of tunneling. In 1987, Shoshone rehabilitated the Keep Cool Mine, and drove 200 ft of new workings towards a vein drilled by Sunshine Mining Company in 1970. Keep Cool was most recently operated as a surface mine by Shoshone in the early 1980s.
In a 1994 report prepared for Shoshone, Professional Geologist Rod Clelland estimated that ore mined from the Keep Cool carried values of 5.45 opt silver, 3.1% lead and 7.7% zinc. Production records from the Keep Cool indicate it is predominantly a lead-zinc mine with associated silver and copper, carrying a high ratio of base to precious metals than other mines in the District.