Information Circular, Issues 8641-8650

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U.S. Department of the Interior, Bureau of Mines, 1974 - Mineral industries
 

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Page 2 - ... the amount of heat necessary to raise the temperature of 1 pound of water 1 degree Fahrenheit.
Page 3 - Includes beds of bituminous coal and anthracite 28 inches or more thick and beds of subbituminous coal 60 inches or more thick that occur at depths to 1 thousand feet.
Page 48 - Technology and use of lignite proceedings [Bureau of Mines-University of North Dakota symposium, Grand Forks, N.
Page 189 - ... vitally important energy challenge. If present trends continue unchecked, we could face a genuine energy crisis. But that crisis can and should be averted, for we have the capacity and the resources to meet our energy needs if only we take the proper steps — and take them now. More than half the world's total reserves of coal are located within the United States. This resource alone would be enough to provide for our energy needs for well over a century. We have potential resources of billions...
Page 228 - Outlook for Energy in the United States to 1985, Energy Economics Division, Chase Manhattan Bank, NA, New York, June 1972.
Page 1 - This study estimates capital investment, operating costs, and selling prices for four underground bituminous mines producing coal with annual production ranging from 1.06 to 4.99 million tons. It is assumed that the mines have a 20-year life. Wages and union welfare payments are considered as of December...
Page 47 - Fischer, RP, 1970, Geology and ore deposits of the Picher field, Oklahoma and Kansas: US Geological Survey Prof.

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