Minerals YearbookThe Bureau, 1973 - Mineral industries |
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Page 4
... electric power . Electric utilities ac- counted for 66.6 percent of all the coal consumed in 1971. Total consumption of bituminous coal and lignite dropped 4.0 percent to 494.9 million tons , largely the result of supply shortages ...
... electric power . Electric utilities ac- counted for 66.6 percent of all the coal consumed in 1971. Total consumption of bituminous coal and lignite dropped 4.0 percent to 494.9 million tons , largely the result of supply shortages ...
Page 7
... electrical energy . Only four areas reported a change ( all slight increases ) in the total cost of electrical energy . They were the Middle Atlantic region , the East North- Central region , the West North - Central re- gion , and the ...
... electrical energy . Only four areas reported a change ( all slight increases ) in the total cost of electrical energy . They were the Middle Atlantic region , the East North- Central region , the West North - Central re- gion , and the ...
Page 15
... electricity . Underground power distribu- tion systems operate on both alternating and direct current and many mines utilize both . These varying electrical systems utiliz- ing voltages of 4,160 volts are a major source of industrial ...
... electricity . Underground power distribu- tion systems operate on both alternating and direct current and many mines utilize both . These varying electrical systems utiliz- ing voltages of 4,160 volts are a major source of industrial ...
Page 22
... electricity generated , converted to theoretical energy resources inputs calculated from national average heat rates for fossil fueled steam- electric plants provided by the Federal Power Commission , using 10,432 Btu per net kilowatt ...
... electricity generated , converted to theoretical energy resources inputs calculated from national average heat rates for fossil fueled steam- electric plants provided by the Federal Power Commission , using 10,432 Btu per net kilowatt ...
Page 23
... electric plants provided by the Federal Power Commission using 10,432 Btu per net kilowatt - hour in 1967 ; 10,398 ... Electric Institute Yearbook . Conversion of electricity to energy equivalent by sectors was made at the value of ...
... electric plants provided by the Federal Power Commission using 10,432 Btu per net kilowatt - hour in 1967 ; 10,398 ... Electric Institute Yearbook . Conversion of electricity to energy equivalent by sectors was made at the value of ...
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add to totals alloys alumina aluminum antimony average avoid disclosing individual barite bauxite bituminous bituminous coal Bureau of Mines Canada carbon cement cent Chemical chromite clay coal coke Colorado company confidential data concentrates consumed copper Corp countries creased crude oil declined decreased disclosing individual company District domestic estimated exports feldspar ferroalloys ferrochromium fluorspar furnace gasoline Germany gold grade gypsum imports for consumption Includes increased independent rounding individual company confidential industry iron and steel Japan lead lignite long tons magnesium manganese material ment metal Mexico mica mill million barrels million cubic feet million tons mineral molybdenum natural gas liquids nickel nonmetal North Dakota Ohio operations ounces output oxide Pennsylvania percent petroleum plant pounds production refined refineries reported Republic scrap shipments smelter sold stocks Table tantalum Texas thousand short tons tion tons Value totals shown United Kingdom Utah Value thousands Withheld to avoid yearend zinc