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Dry Screening manganese ore fragments from the soil at the C.F.I. mine, southeast of Green River. Much of the manganese ore produced in this region is found as loose fragments that commonly range in size from that of a peanut to that of a base ball. In places these fragments rather closely pave the surface, generally they are mixed with a foot, more or less, of loose sandy soil. These ore fragments were originally parts of a thin horizontal bed of manganese oxides. Lowering of the surface by erosion, in which wind deflation has played a large part, exposed the manganiferous layer that became broken into fragments but was not comminuted sufficiently to be removed by the wind. As the more friable sandstone that adjoins...
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Aerial view of glaciated topography in the La Sal Mountains, Note large moraine in center of photograph, numerous cirques and a rock glacier in center of lower left quadrant, Grand and San Juan Counties, Utah. n,d.
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East wall of the north end of the Salt Valley about 7 miles south-southwest of Thompson; the valley flat in the foreground is largely underlain by the Upper Cretaceous Mancos shale, dropped against the Jurassic formations of the valley walls by a large fault. Morrison formation; Salt Wash sandstone member of the Morrison; Summerville formation; Entrada sandstone; Moab sandstone tongue of the Entrada; Carmel formation; Navajo sandstone; Kayenta sandstone; Wingate sandstone. Grand County, Utah. 1925. Plate 26-A, in U.S. Geological Survey. Professional paper 183. 1936. Plate 5 in U.S. Geological Survey. Bulletin 863. 1935.
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Tipple, screening plant of Chesterfield Mining Company, from across the canyon. Old washing house on right. Tracks from mine are higher in left center. Ballard's prospect appears in upper right at shadow made by massive (Thompson's) sandstone ledge. Shows Palisade coal, Ballard coal, Thompson Canyon sandstone, Chesterfield coal zone, Neslen member. Grand County, Utah. August 11, 1926. Plate 5-A in U.S. Geological Survey. Bulletin 852. 1926.
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An Earth erosion column in a semi-arid country ordinary earth becomes almost as enduring as solid rock. These columns are 30 feet high and are protected by caps from the rain. Grand County, Utah. 1907. Plate 50-C in U.S. Geological Survey. Bulletin 707. 1922.
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Dry screening at the C.F.I. mine. Another view similar to No.418. The cleaned ore is measured with pails and piled on a platform as shown at the right. Thence team and wagon haul it to Floy for shipment on the D. & R.G. Railroad for shipment East. La Sal and Moab quadrangles, Grand County, Utah. May, 25, 1918.
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Shinnville - Camp of the Green River Mining Co., at the C.F.I. mine, southeast of Green River, a temporary habitation in the bleak and inhospitable region. The 4-mule team shown is employed continuously supplying the camp with water, the necessary supply of which must be hauled up hill from a spring 6 miles distant. La Sal and Moab quadrangles, Grand County, Utah. May 25, 1918.
    map background search result map search result map WMR 012 - Thompson Magnesium Well. Grand County, Utah. 1942. WMR 012 - Thompson Magnesium Well. Grand County, Utah. 1942.