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This map layer includes refractory, abrasive, and other industrial minerals operations in the United States. The data represent commodities covered by the Minerals Information Team (MIT) of the U.S. Geological Survey, and the operations are those considered active in 2003 and surveyed by the MIT. This is a revised version of the June 2004 map layer.
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Outlines of areas mined for the Springfield coal in Illinois as of January 1, 1996. This information was extracted from detailed coal mine data stored in the ISGS Coal Section library database. Lines delineate the approximate outer boundary of individual mines (if known) or general mined areas. Interior mine boundaries such as pillars or small blocks of unmined coal are commonly not depicted. Outlines have been compiled from a variety of sources. Outlines of areas mined before 1987 are commonly from source maps at scales of 1:62,500 or smaller. Outlines of areas mined since 1987 are commonly digitized at scales ranging from 1:4800 to 1:12,000. Mines whose extent is not known or which only mined a few acres are not...
Categories: Web Site; Tags: 17005 = Bond, 17011 = Bureau, 17017 = Cass, 17019 = Champaign, 17021 = Christian, All tags...
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Ruled mica book in kaolinized pegmatite, Big Bess mine. Gaston County, North Carolina. Figure 32, in U.S.Geological Survey Professional paper 248-A. 1953.
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A structure in large cleavage sheets of muscovite. Typical flat A sheet below; color zoning shows a left edge of sheet above. Southeastern United States. Figure 28, in U.S.Geological Survey Professional paper 248-A. 1953.
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Hydraulic mine, North San Juan, Bedrock in foreground; auriferous gravel in bluff, Nevada County, California, 1905.
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Exposure of coarse alluvial material on No.1 bench near head of Armells Creek east of Hilger, sec. 1, T. 17 N., R. 19 E. (See image 1134.) Fergus County, Montana. August 13, 1921.
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Looking northeast to mouth of Santa Ana Canon, from a point near junction of Santa Ana River and Mill Creek in N. 1/2 of sec. 17, T. 1 S, R. 2 W. San Bernardino County, California. February 1920.
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Shovel operating in open cut at Montgomery mine. The ladder is leaning against a "horse" or pinnacle of limestone. Independence County, Arkansas. 1918. Plate 14-B in U.S. Geological Survey. Bulletin 734. 1923.
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Faulted veinlets of chalcocite and quartz pyrite ore; Mountain View mine, 600 foot level, south crosscut, north vein, east vein. Jefferson County, Montana. Circa 1900. Plate 16-B in U.S. Geological Survey. Professional paper 74. 1912.
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Sweet mine and smelter plant of Mansfield group. Vein outcroppings in right and left foreground, looking southwesterly. Santa Cruz County, Arizona. 1909. Plate 16-A in U.S. Geological Survey. Bulletin 582. 1915.
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Different view of Eagle River running through mining area at Gilman zinc mine on Battle Mountain, between Redcliff and Minturn. Eagle County, Colorado. ca. 1980.


map background search result map search result map Mined areas of the Springfield Coal in Illinois Ruled mica book in kaolinized pegmatite, Big Bess mine. Gaston County, North Carolina. 1953. Ruins of Harmony Borax Mill. Death Valley National Park, California. 1938. Mouth of Santa Ana Canon. San Bernardino County, California. 1920. Refractory, Abrasive, and Other Industrial Minerals Operations Ruled mica book in kaolinized pegmatite, Big Bess mine. Gaston County, North Carolina. 1953. Ruins of Harmony Borax Mill. Death Valley National Park, California. 1938. Mouth of Santa Ana Canon. San Bernardino County, California. 1920. Mined areas of the Springfield Coal in Illinois Refractory, Abrasive, and Other Industrial Minerals Operations