Workers in a 100-stamp mill, California, ca.1900 

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

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

Miners lounging around sacks of ore from the Red Top mine, Goldfield, Nevada, ca.1900 

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

A miner using hydraulic mining techniques and tools to mine, Nevada City, California, ca.1900-1930 

Concentrator mill 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 

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

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

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

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

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

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

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

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

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

Mining hoist in the Rocky Mountains, Canada, ca.1900-1930 

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

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