Conditions in the copper mines of Michigan.
Hearings before a subcommittee of the Committee on Mines and Mining, House of Representatives, Sixty-third Congress, second session, pursuant to H. res. 387, a resolution authorizing and directing the Committee on Mines and Mining to make an investigation of the conditions in the copper mines of Michigan. February 16-21, February 23-25, [March 2, 3, and 4], 1914 ...

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• Conditions in the copper mines of Michigan : hearings before a subcommittee of the Committee on Mines and Mining, House of Representatives, Sixty-third Congress, second session, pursuant to H. Res. 387, a resolution authorizing and directing the Committee on Mines and Mining to make an investigation of conditions in the copper mines of Michigan

  Author

  United States. Congress. House. Committee on Mines and Mining.

  Published

  1914

• Conditions in the copper mines of Michigan; hearings before a subcommittee... Sixty-third Congress, second session, pursuant to H. Res. 387, a resolution authorizing and directing the committee of mines and mining to make an investigation of conditions in the copper mines of Michigan. Feb. 16 [-25] 1914

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  United States. Congress. House. Committee on Mines and Mining.

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