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Mining Methods and Costs at Crystal-Victory and Minerva Number 1 Fluorspar Mines of Minerva Oil Company, Hardin County, Illinois
Report issued by the U.S. Bureau of Mines discussing mining costs and methods of fluorspar mines in Hardin County, Illinois. As stated in the summary, "it describes the exploration, development, and mining practices, giving costs of each. Transportation, equipment, power, labor, and other influencing factors also are discussed" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date:
1960
Creator:
Montgomery, Gill; Daly, J. J. & Myslinski, Frank J.
System:
The UNT Digital Library
Mining Methods and Costs, Regal Asbestos, Mine Jaquays Mining Corp., Gila County, Arizona
Report issued by the U.S. Bureau of Mines discussing the mining costs and methods of the Regal asbestos mine in Arizona. Location, history, production, and development details are presented. This report includes tables, maps, illustrations, and photographs.
Date:
1961
Creator:
Stewart, L. A.
System:
The UNT Digital Library