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Description: Outlines of areas mined for the Herrin Coal in Illinois. Updated underground mine outlines as of January 1, 2012 and surface mine outlines as of June 30, 2011 are included. As of July 2012, 4 surface mines and 13 underground mines are mining the Herrin Coal. Information was extracted from company mine maps, DNR surface mine shapefile, and NAIP Digital Ortho Photo Images. 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 included in this coverage. Additional information is available from the Coal Section of the Illinois State Geological Survey. Mine outlines from completed Coal Mine Quadrangle Studies were included in this feature class if applicable. An ongoing study, the detailed Coal Mine Quadrangle maps depict the best-known position of mine boundaries with respect to individual properties as located on a USGS topographic map image base. For a list of completed quadrangles please visit the ISGS Coal Section website or contact the Coal Section. This datafile was compiled and updated in 2012 in order to provide a current, state-wide data set showing surface and underground coal mines of the Herrin Coal. Due to the wide range of source map scales, these data are suitable for regional applications only at the 1:100,000 scale or smaller.
Service Item Id: 5407fbbab3b64dd29f2502b54094175f
Copyright Text: Data capture, compilation and library maintenance: Marge Bargh, Colin Treworgy, and other ISGS Coal Section staff Compilation of library tiles to create this product: Chris Korose Documentation: Cheri Chenoweth, Chris Korose, and Andrew Louchios Quality Review: Cheri Chenoweth, Chris Korose, and Andrew Louchios
Spatial Reference:
54012
(54012)
Initial Extent:
XMin: -1.1771666013783736E7
YMin: 1953250.1197730922
XMax: -5039272.141581019
YMax: 7198696.097269382
Spatial Reference: 54012
(54012)
Full Extent:
XMin: -7710868.583799999
YMin: 4743327.7191
XMax: -7431588.323799999
YMax: 5170043.4958
Spatial Reference: 54012
(54012)
Units: esriMeters
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