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Extent and Availability of Natural Gas Reserves in Michigan "Stray" Sandstone Horizon of Central Michigan
Report issued by the U.S. Bureau of Mines on studies of the known natural gas reserves in central Michigan sandstone deposits. The geology and methods used to estimate the reserves are presented. This report includes tables, illustrations, and maps.
Date:
July 1936
Creator:
Rawlins, E. L. & Schellhardt, M. A.
System:
The UNT Digital Library
Microscopic Structure and Concentratability of the Important Iron Ores of the United States
Outline of Problem: "This paper covers a survey of 19 ores collected from seven of the more important iron-ore districts of the United States and is a contribution by the ore-dressing section of the United States Bureau of Mines to general research program on iron and steel being conducted by the Bureau."
Date:
1936
Creator:
Cooke, S. R. B.
System:
The UNT Digital Library