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Primary view of Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941
Fieldner, Arno Carl & Schmidt, L. D.
November 1941
Primary view of Accident Experience: Iron-Ore Mines, Lake Superior District, 1940-43
Cash, Frank E. & Larsen, Reuben D.
May 1945
Primary view of Methods and Costs of Mining and Preparing Sand and Gravel at the Plant of the Ward Sand and Gravel Co., Oxford, Michigan
Ward, Frederick L.
January 1932
Primary view of Mining Methods and Practice in the Michigan Copper Mines
Crane, W. R.
Primary view of Rock Bursts in the Lake Superior Copper Mines, Keweenaw Point, Michigan
Crane, W. R.
Primary view of Natural Ventilation of Michigan Copper Mines
McElroy, G. E.
Primary view of Experiments in Underground Communication Through Earth Strata
Ilsley, L. C.; Freeman, H. B. & Zellers, D. H.
Primary view of Subsidence and Ground Movement in the Copper and Iron Mines of the Upper Peninsula, Michigan
Crane, Walter R.