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Accident Experience: Iron-Ore Mines, Lake Superior District, 1940-43
Report issued by the U.S. Bureau of Mines discussing the iron-ore mining accident experience in the Lake Superior District. Frequency and severity rates of accidents between 1940 and 1943 are presented. This report includes tables.
Date:
May 1945
Creator:
Cash, Frank E. & Larsen, Reuben D.
System:
The UNT Digital Library
Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941
Report issued by the U.S. Bureau of Mines discussing the annual report over the research and technology of coal during 1941. As stated in the foreword, "these investigations increase our fund of exact knowledge on the properties and composition of American coals and lead to better methods in mining, preparing, storing, and utilizing coal" (p. 4). This report includes tables, illustrations, photographs, and a map.
Date:
November 1941
Creator:
Fieldner, Arno Carl & Schmidt, L. D.
System:
The UNT Digital Library
Methods and Costs of Mining and Preparing Sand and Gravel at the Plant of the Ward Sand and Gravel Co., Oxford, Michigan
Report issued by the U.S. Bureau of Mines discussing the operation and production of the Ward Sand and Gravel Company in Oxford, Michigan. The methods and costs employed by the company are presented. This report includes tables, and illustrations.
Date:
January 1932
Creator:
Ward, Frederick L.
System:
The UNT Digital Library