Missouri Mine, upper Hall Valley, 8 July 2020
Missouri Mine, Hall Valley, Montezuma Mining District, Park County, Colorado, USA
The Missouri Mine lies in upper Hall Valley, Colorado near 11,450 feet elevation. The mine’s lode was discovered in the late 1870s, and by 1883 it had 600 feet of tunnels in very hard rock, mostly hornblende and gneiss, producing primarily silver, with accessory gold and copper. The failure of the Hall Valley mills to deal with the barite-rich ...
© Dan Polhemus 2020