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Aerial Gamma-Ray and Magnetic Survey, Final Report. Volume 1: Newcastle and Gillette Quadrangles (Wyoming/South Dakota) and Ekalaka Quadrangle (Montana, South and North Dakota) (open access)

Aerial Gamma-Ray and Magnetic Survey, Final Report. Volume 1: Newcastle and Gillette Quadrangles (Wyoming/South Dakota) and Ekalaka Quadrangle (Montana, South and North Dakota)

The following report is the first in a series of volumes presenting data recorded during the months of August and September, 1978, from a radiometric and magnetic survey taken in four quadrangles between eastern Wyoming, North and South Dakota, and southern Montana (Newcastle, Gillette and Ekalaka).
Date: April 1979
Creator: GeoMetrics, Inc.
System: The UNT Digital Library
Review of State Mine Inspector's Reports as They Relate to Accidents from Falls of Roof (open access)

Review of State Mine Inspector's Reports as They Relate to Accidents from Falls of Roof

Report issued by the U.S. Bureau of Mines over state mine inspection reports from 19 U.S. states. The information in the reports includes details of accidents, locations that specific accidents occurred, and proposed remedies for prevention of future accidents. This report includes tables.
Date: April 1929
Creator: Paul, James Washington
System: The UNT Digital Library