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Over 70,000 photos covering a variety of topics from Marriott Library Special Collections
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3
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3
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3
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Collection Name:
"Gibb R. Madsen"
Subject:
"Machinery"
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Title
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1
Ball mills at the Magna mill. Each cylinder contains about sixty tons of steel balls, which roll as the cylinder turns, grinding the ore between the balls.
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2
Car dumper at the Magna concentrating mill. The car, with between 85 and 100 tons of ore, is turned completely over in the unloading process.
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3
Inspecting and cleaning wire bars at the Garfield refinery.
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