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These are shapefiles and coverages that represent areas of combined State and Federal coal leases and mined-out areas in the Yampa coal field. Yamaleasg contains polygons for which resources were not calculated for the A coal zone. Yambleasg contains polygons for which resources were not calculated for the B coal zone, etc.
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These are shapefiles and ARC/INFO polygon coverages showing the isopachs of total net coal in beds greater than or equal to 1.2' thick for the A, B, C, and D coal zones in the Williams Fork Formation, Yampa coal field, northwestern Colorado. YAMATHKG is for the A coal zone, YAMBTHKG is for the B coal zone, etc.
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This is a shapefile and unioned polygon ownership coverage used to calculate coal resources of the A through D coal zones, Yampa coal field, northwestern Colorado. Polygons that have been combined include counties, 7.5' quadrangles, townships, surface and coal ownership. This ownership coverage was clipped by the largest resource boundary polygon--that of the A coal zone.
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These are shapefiles and coverages of data points used in the assessment of coal zones A, B, C, and D in the Yampa coal field, northwestern Colorado. There are four separate shapefiles, one for coal zone. Yama_pts is for the A coal zone, yamb_pts is for the B coal zone, etc.


    map background search result map search result map Structure contours on top of the Trout Creek Sandstone, Yampa coal field, CO Anticlines and synclines of the Yampa Coal Field (yamclineg) Faults in the Yampa coal field, 2000 Colorado Plateau Coal Assessment (yamfltg) Geology of the Yampa coal field, Northwestern Colorado (yamgeolg) Active and inactive mines in the Yampa coal field Yampa coal field land status and Federal mineral ownership (yamowng) Structure contours on top of the Trout Creek Sandstone, Yampa coal field, CO (yamstrcg) Yampa coal field combined leased areas and mined-out areas, Colorado Plateau (yam*leasg) Boundaries delimiting areas within which resources were calculated for A through D coal zones, Yampa coal field, CO (yam*bndg) Data point (drill locations) locations used in assessing coals in the Yampa coal field (yam*ptg) Isopachs of total net coal in A-D coal zones, Yampa Coal Field (yam*thkg) Yampa coal field combined leased areas and mined-out areas, Colorado Plateau (yam*leasg) Data point (drill locations) locations used in assessing coals in the Yampa coal field (yam*ptg) Anticlines and synclines of the Yampa Coal Field (yamclineg) Yampa coal field land status and Federal mineral ownership (yamowng) Boundaries delimiting areas within which resources were calculated for A through D coal zones, Yampa coal field, CO (yam*bndg) Isopachs of total net coal in A-D coal zones, Yampa Coal Field (yam*thkg) Structure contours on top of the Trout Creek Sandstone, Yampa coal field, CO (yamstrcg) Structure contours on top of the Trout Creek Sandstone, Yampa coal field, CO Active and inactive mines in the Yampa coal field Faults in the Yampa coal field, 2000 Colorado Plateau Coal Assessment (yamfltg) Geology of the Yampa coal field, Northwestern Colorado (yamgeolg)