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NONFUEL MINERALS IN THE ECONOMY
MINERALS AND THE PHYSICAL ENVIRONMENT
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acid acres agricultural Anaconda approximately Arizona atmospheric average domestic price beneficiation Bureau of Land Bureau of Mines California cement chemical concentrates cooling copper crop agriculture deposits discharged dumps dust control economic EMPIRICAL SUPPLY FUNCTION employment environment exports federal froth flotation gallons per minute gases gold groundwater increased industrial minerals industrial minerals production internal combustion engine involved iron Land Management leaching lease less limestone lost through evaporation material metal mining mill mineral commodities mineral land mineral producers mineral resource utilization Mining Company mining operations molybdenum Montana National Park Nevada nonfuel mineral industries nonmetallic minerals Nonmetals nonmineral normally open pit Pacific percent phosphate phosphate rock placer mining plant potash Prineville processing public lands pumped recreational purposes relationship relatively S6T S6T sand and gravel seepage significant silicosis SS6T sulfide sulfur sulfuric acid surface tailings pond U.S. Bureau underground mines uranium users Washington water requirements West Western United