The Mass Consolidated Mining Co. was organized in 1899 and included the Ridge, Mass, Ogima, Merrimac, and Hazard mines. The company also purchased the Evergreen Bluff Mining Co. in 1911. The company closed in 1919 and produced approx. 51 million lbs. of refined copper. For more information, please see the individual mines listed above.
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References
Butler, B.S., and Burbank, W.S., 1929, The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.
The Copper Country Rock & Mineral Club, 2001, Red Gold and Tarnished Silver, 2nd Ed., 44 pp.
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