Tin mine complex owned by Colonel Robinson, Temescal, 1889 

Inside a building at the Tin mines at Temescal, Riverside County, ca.1889 

Workers drilling inside the Santa Ana Tin Mine in Orange County, March 20, 1903 

Concentrator mill at a mine on the Colorado River, California, ca.1900 

Interior view of the Santa Ana Tin Mine, Orange County, March 20, 1903 

Group of men standing at the foot of the gallows at the Good Hope Mine, Riverside County, ca.1905 

Concentrators of the Karma Mining Company, Mojave Mining District, ca.1900 

Scenic view of the Mojave Desert and Providence Mountain from Bagdad Mine (the Chase Mill Site), Riverside, ca.1903 

Filter press of the Echo Mining Company, Mojave Mining District, ca.1907 

Amalgamator at a mine on the Colorado River, California, ca.1900 

Gold mines and mining facilities, Goldfield, Nevada, ca.1904 

Three pack burros used in mining, California, ca.1900 

Interior view of mine and miners in the Mohawk Mine, Goldfield, Nevada, ca.1900-1905 

The Mohawk mine and mining facilities, Goldfield, Nevada, ca.1905 

Four men at the Bucket & Windlass, a prospecting shaft, Hard Cash Mine, Randsburg, ca.1900 

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

Cyanide tank at the Queen Esther Mining Company mine, Mojave Mining District, ca.1900 

Exterior view of a Santa Ana tin mine in Trabuco Canyon, March 20, 1903 

People inside a building at the Kinyon Mine in Randsburg, ca.1898 

Old mill used by miners at the Ten Stamps Mine, ca.1900