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Workers killed by an explosion of dynamite
ARP23A10_350

Workers killed by an explosion of dynamite

The Palestine Potash Company
ARP18A20_207

The Palestine Potash Company

Cutaway of hillside showing tunnels and supports
ARP18A10_047

Cutaway of hillside showing tunnels and supports

View of the Utah Copper Company with open-pit mine workings at Carr Fork
ARP17A01_323

View of the Utah Copper Company with open-pit mine...