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<br /> <br />li_.:.>:~:~ <br />J' ",_ <br />/" " <br /> <br />rrr=rrrtrrr <br />. .-, ., i <br /> <br />-r=, <br />ti.i~ <br /> <br />..... :=..' .:--- ~,,~. . -, ~ ':".:;::~~ <br />1 ..+. . . <"!"'.'O'.l;,~ <br />1. .....~~.,:~""'- ~Oi-::....~~. '"~~~~ <br /> <br />'l'~ <br /> <br />The Lands Yield a Broad Variety of Mineral Resources <br /> <br />completely defined molybdenum ore body being needs. The more valuable chemical and fertilizer <br />developed near Empire, Colorado overshadow other minerals are processed locally and marketed regionally, <br />metal mining activities. A number of other low-grade nationally, and in a few instances worldwide. Bentonite <br />iron deposits exists in South Dakota and Wyoming. clay production in Wyoming, used extensively in oil well <br />Areas of low-grade chromium mineralization are known, driIling, phosphate resources along the western edge of <br />and recent copper and molybdenum explorations have the basin, and gypsum and cement minerals in many <br />been made along the Continental Divide. Open-pit sections of the basin, are some of the nonmetallic <br />uranium mines are operating in Wyoming. minerals that have promise for future development. <br />Nonmetallic deposits of the basin commonly are Liquid fuels and natural gas were produced from <br />extensive in surface area. Recovery operations fre- about 35,000 wells during 1963. A minimum of I acre <br />quently involve mobile surface plants and tend to per well was assigned to isolated discoveries or field <br />require..exteIlsive..land-areas-to-mee t-q uantit-y- and'q u abt-y- -- -- -ex-te n sions,a nd-one-third-ac re-was-assigned-to-a.Jl-o the r <br />production requirements. Nonmetallic minerals of the producing wells. These acreage assignments allow for <br />basin include a broad array of such construction service and storage facilities. Mineral fuels as a group <br />materials as sand, gravel, stone, and clay, several constitute the greatest mineral resource now in pro- <br />fertilizer minerals, and numerous minerals for chemical duction in the basin. Currently the annual oil and gas <br />and other miscellaneous uses including fluorspar, lime, production accounts for about two-thirds of the total <br />feldspar, mica, and salt. Almost every county in the value of mineral output. Basinwide production of the <br />basin has recorded the annual production of non- petroleum industry has increased substantially since <br />metallics, primarily to meet local construction industry World War II, paralleling a national trend. <br /> <br />50 <br />