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Geology of the Big Snowy Mountains, Montana
From introduction: The main purpose of the field investigations on which this paper is based was to determine the structure of the mountains. The geologic formations were therefore studied, and sufficient data were obtained to construct a combined areal and structural map.
Date:
1931
Creator:
Reeves, Frank
System:
The UNT Digital Library
Safety Cars of the United States Bureau of Mines
Report issued by the U.S. Bureau of Mines discussing the mine stations and safety cars used to reach miners in distress. As stated in the report, "the purpose, equipment, personnel, and construction of its safety cars" is presented. This report includes an illustration, and a map.
Date:
March 1931
Creator:
Forbes, J. J. & Ankeny, M. J.
System:
The UNT Digital Library