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Man single-jack drilling, mining competition

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Advisor
Editor
Date
Date Issued
1971
Date Submitted
Keywords
Mining -- Competitions
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Colorado Mining Association Collection
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A0160-1105.jpg
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URI
https://hdl.handle.net/11124/181903
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Abstract
A man in a single-jack drilling contest, Colorado State Mining Competition; the placard on the block reads, "MacKenzie." Caption reads: "Colo. Mining Association."
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Rights
Copyright retained by Colorado Mining Association.
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