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American mining companies often had important interests in Mexico, also, as evidenced by the patent on this ore crusher.
Plumas Eureka SP, CA (1991).
Pelton wheels are used to capture the power of a high pressure jet of water.
Plumas Eureka SP, CA (1991).
Early mines needed water both for process and energy.
Plumas Eureka SP, CA (1991).
The Klamath-Trinity mountains are dotted with mining claims large and small.
Hayfork Creek, near Hayfork, Trinity NF, CA (1992).
Before electricity, tools in a machine shop such as this were all powered by pulley belts running from an overhad rotating shaft.
Empire Mine SHP, Grass Valley, CA (1985).
Mine headframes such as this mark the top of an elevator system that might extend down thousands of feet underground.
Idaho-Maryland Mine, Empire Mine SHP, Grass Valley, CA (1985).
Charcoal made in these kilns near Death Valley was used to smelt lead ore in the mines at Darwin.
near Wildrose, Death Valley NM, CA (1969).
Dams on high mountain streams and lakes diverted water into acqueducts to power hydraulic mines many miles downstream.
Sapphire Lake, Trinity Alps Wilderness, CA (1977).
Test drilling for mineral deposits.
near Ryan, Death Valley NM, CA (1974).
Gold-bearing quartz was crushed in stamp mills run by water power.
Empire Mine SHP, Grass Valley, CA (1985).