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Magnetic Base Stations in Lake Superior Iron Districts
Report issued by the U.S. Bureau of Mines on the magnetic base stations located in Minnesota, Michigan, and Wisconsin. The report evaluates the usefulness of the stations for calibration of certain instruments. This report contains tables, graphs, maps, and illustrations.
Date:
September 1951
Creator:
Bath, Gordon D.
System:
The UNT Digital Library
Estimate of Known Recoverable Reserves of Coking Coal in Floyd County, Kentucky
Report issued by the U.S. Bureau of Mines on the known recoverable reserves of coking coal in Floyd County, Kentucky. The investigation includes a study on the properties of coal and coal blends found in the area. This report contains maps and tables.
Date:
September 1951
Creator:
Dowd, James J.; Turnbull, Louis A.; Toenges, Albert L.; Abernethy, R. F. & Reynolds, D. A.
System:
The UNT Digital Library