Interior of a stamp mill, Los Angeles(?), ca.1900 

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

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

Mule team and loaded ore wagons at stamp mill, Mojave Desert, ca.1900 

Interior view of Bagdad mine on the 90 feet level, California, ca.1900 

Drennen's Mill -- stamp mill and concentrator -- on the Colorado River, 1900-1950 

A miner's cabin built from bottles, Goldfield, Nevada, ca.1900-1930 

Drennen's cabin, near his stamp mill and concentrator, on the Colorado River, 1900-1950 

Chinese farm workers winnowing beans, California, ca.1900 

Two workers standing outside a mining facility, ca.1900 

Three miners, wearing prospector outfits, standing next to a burro cart loaded with camp supplies, Goldfield, Nevada, ca.1900-1905 

Miner's pack animals in front of mining supply stores, Goldfield, Nevada, ca.1900 

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

A smelter at a mammoth copper mine in Shasta County, California, ca.1900 

Mule team and loaded ore wagons at stamp mill in desert, ca.1890-1892 

Hydraulic mining in an open pit, California, ca.1880-1900 

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

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

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

Barker the Black Hills Hermit at his cave, ca.1900