Large stack of salt being piled at a salt mine, California, ca.1910 

View of a salt mine, California, ca.1910 

Two men standing among rows of salt stacks in the north end of Death Valley, 1910-1920 

Salt stacks drying, California, ca.1910 

Salt stacks drying, California, ca.1910 

Unidentified salt stacks drying with workers and machinery in the background, ca.1910 

An aerial view of a salt marsh north of Death Valley, California, ca.1910 

Locomotive engine used by a salt works, California, ca.1910 

Salt stacks drying in shallow water, California, ca.1910 

Group of men standing next to two automobiles outside of what appears to be a mining warehouse, ca.1900 

Woman sitting in what appears to be a mine shaft, [s.d.] 

Man standing next to the brick building of the salt works north of Redondo Beach, ca.1901(?) 

The Salt Works on the Salton Sea, Colorado Desert, east of Palm Springs, ca.1903 

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

Borax Smith's mine at Borate or Harmony, California, ca.1890-1900 

"Borax" Smith's mine at Harmony, Death Vallley, ca.1890 

Two men at cable car track manufacturing plant, ca.1890 

Two men pulling themselves across the Alamo River on a cable strung high above, ca.1910 

Two workers standing outside a mining facility, ca.1900 

Twenty-mule team hauling borax in wagons from mines in Death Valley, ca.1890