A mine workers examines frost crystals formed inside an abandoned working place of a copper mine in Kennecott, Alaska.
Mine workers eat food at a mess hall in a copper mine, Kennecott, Alaska. Man-cars operated on inclined shaft used to transport the miners.
Glacier mining is being done in Kennecott, Alaska. Copper ore is mined from a melting glacier using drag line scrapers.
View of a railroad bridge over a river in Kennecott, Alaska. Snow covered mountains in the background. View of a melting glacier. High speed water currents drifts through the mountains. A picturesque scene of the Alaskan Valley.
Mine workers place wooden boards above heavy timbers of drift inside a copper mine in Ray, Arizona. Miners at work in shrinkage stope. Air drills are used to drill holes in the ceiling of the stope. A miner crushes block of ores beside an angle-braced pony sets above the drifts.
Loaded ore cars pass on haulage tracks through a copper mine drift in Ray, Arizona. The ore cars arrive at the main haulage ways leading to the ore pocket at the shaft. An ore car enters a rotary car dump.
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