Filters: Tags: overburden (X)8 results (37ms)
This dataset is a polygon coverage of the thickness of the overburden of the Pocahontas No. 3 coal bed, in feet. It was produced by importing 1:100,000 (30-minute) and 1:24,000 scale (7.5-minute) digital elevation models (DEM) into ARC, and merging the lattices into one. The structure elevation grid for the Pocahontas No. 3 coal bed was subtracted from the surface elevation grid, creating overburden thickness. This grid was contoured within the known extent of the Pocahontas No. 3 coal bed into 200, 500, 1000, 2000, and 3000 foot lines. This vector file was imported to ARC. Polygon attributes include a code for the USGS overburden category (Coal Resource Classification of the U.S. Geological Survey, USGS, Circular...
Total coal coverage containing eleven different attributes of information in the Kaiparowits Plateau study area
This is a polygon coverage containing eleven different attributes of information including net coal thickness and estimated coal tonnages in the Calico and A-sequences in the Kaiparowits Plateau study area. This layer was derived from a "union" process, i.e., intersection and overlay of numerous layers and retaining attributes of each. It is the result of computing the geometric intersection of ten polygon coverages using the Environmental Systems Research Institute, Inc. (ESRI) Arc/Info UNION command, and finally calculating coal tonnage in INFO. Net coal thickness values are from 209 data points and represent all coal beds that are more than 1 foot thick.CARE SHOULD BE TAKEN IN USING THE COAL THICKNESS AND COAL...
This ArcView shapefile contains a polygon representation of the overburden to the base of the Rosebud-Robinson coal zone, Colstrip coalfield (Powder River Basin), Montana. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region.
Areas where geologic conditions in the Calico and A-sequences are more favorable for current underground mining technology in the Kaiparowits Plateau study area
This is a coverage that shows areas in the Kaiparowits Plateauwhere geologic conditions in the Calico and A-sequences are morefavorable for current underground mining technology (Hettinger andother, 1996, fig. 22). This coverage contains nine attributes ofinformation. It was compiled by computing the geometricintersection of nine polygon coverages using the ARC/INFO UNIONcommand.This coverage is characterized as being a guide to where the morefavorable coal areas are likely to be for current undergroundmining technology: areas where coal beds in the Calico and A-sequences are greater than 3.5 feet thick, less than 3,000 feetdeep, and inclined by less than 12 degrees. Note: Coal beds lessthan 3.5 feet thick are generally...
This shapefile contains a representation of the overburden above the Wyodak-Anderson coal zone. This theme was created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region
This ArcView shapefile contains a representation of the overburden thckness above the Hanna 77 coal zone in the Hanna coalfield, Hanna Basin, Wyoming. This shapefile was created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region.
This coverage contains a representation of the overburden in the Hagel Coal Zone area. This area is part of the National Coal Assessment Rocky Mountain Region, and can be viewed in relation to roads, geology, and other relevant themes of this area.
Acid mine groundwater in lignite overburden dumps and its prevention - the Rhineland lignite mining area (Germany)