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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...


map background search result map search result map Mined areas of the Springfield Coal in Illinois Refractory, Abrasive, and Other Industrial Minerals Operations (1989) Regional developments mining and minerals Idaho (1996) Idaho mining and exploration 1996 (1997) Idaho Geological Survey (1998) Annual review 1998: Idaho (1999) Mining, minerals, and the environment in Idaho, 1999 [incomplete draft] (1999) 1999 Developments in Idaho's mineral industry (2005) Idaho BLM AML Program (2010) Idaho mining and exploration 2010 (2012) Idaho Mining and Exploration, 2012 (2013) Idaho Mining and Exploration, 2013 Mined areas of the Springfield Coal in Illinois (1996) Idaho mining and exploration 1996 (1997) Idaho Geological Survey (1998) Annual review 1998: Idaho (1999) Mining, minerals, and the environment in Idaho, 1999 [incomplete draft] (1999) 1999 Developments in Idaho's mineral industry (2005) Idaho BLM AML Program (2012) Idaho Mining and Exploration, 2012 (2013) Idaho Mining and Exploration, 2013 Refractory, Abrasive, and Other Industrial Minerals Operations