MICHIGAN LIMESTONE AND DOLOMITE RESOURCES AND QUARRIES.....14 MICHIGAN MISCELLANEOUS STONE AND SANDSTONE OPERATIONS.....15 GENERALIZED GEOLOGIC MAP OF MICHIGAN.....15 COVER ILLUSTRATION The front cover is a drawing of the Centennial Mines No. 6 headframe by staff artist Jim Campbell. The mine is loed north of Calumet in the Keweenaw .
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