Miners about to descend into the Empire Gold Mine, Grass Valley, California, ca.1900-1930 

Portrait of miners in the 2,200 level of the Empire Mine, Grass Valley, prior to 1906 

Group of thirteen miners working to load rail cars with ore at mine run by Free Gold Mining Company, Hedges, California, ca.1905-1920 

Complex of buildings at the Empire Mine in Grass Valley, ca.1910 

View of the landscaped grounds of the Empire Mine in Grass Valley, ca.1910 

Nevada County Views, showing Champion Mines in Grass Valley, ca.1910 

A group of miners (forming a mine shift) pose in front of mine headframe (shaft), Goldfield, Nevada, ca.1905 

Nevada County Views, showing Idaho-Maryland Mine in the Grass Valley, ca.1910 

Interior view of a mine (named Bagdad Mine?) belonging to the Rochester Gold Mining Co., Ludlow, California, ca.1900 

View of a gold recovery mine at Tropico Hill and Gold Camp, ca.1900 

View of what appears to be a mining community, ca.1900 

Exterior view of the Rhyolite deserted mining camp on the way to Death Valley, ca.1900-1950 

A gold dredge in the river (or lake?), Oroville, California, ca.1930 

A street scene of people boosting for tickets to the "Grand Ball" during the boom days at the mines, Goldfield, Nevada, ca.1905