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Armour #1 Mine, "Devil's foot" used to brace timber post

Petersen, Max S.
Arthur Lakes Library
Russell L. and Lyn Wood Mining History Archive
United States. Bureau of Mines
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Abstract
A Devil's foot" is used to brace a timber post underground at the Armour #1 Mine. The Armour #1 Mine, an underground iron mine near Crosby, Minnesota was operated by the Inland Steel Company.
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