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The Pittsburgh coal seam is the thickest and most extensive coal bed in the Appalachian Basin; [1] hence, it is the most economically important coal bed in the eastern United States. The Upper Pennsylvanian Pittsburgh coal bed of the Monongahela Group is extensive and continuous, extending over 11,000 mi 2 through 53 counties.
The Allegheny Group, often termed the Allegheny Formation, [2] is a Pennsylvanian-age geological unit in the Appalachian Plateau.It is a major coal-bearing unit in the eastern United States, extending through western and central Pennsylvania, western Maryland and West Virginia, and southeastern Ohio.
The Illinois Basin is a Paleozoic depositional and structural basin in the United States, centered in and underlying most of the state of Illinois, and extending into southwestern Indiana and western Kentucky. The basin is elongate, extending approximately 400 miles (640 km) northwest-southeast, and 200 miles (320 km) southwest-northeast.
The Pittsburgh Coalfield (Pittsburgh Coal Region) is the largest of the Western Pennsylvania coalfields. It includes all or part of Allegheny, Fayette, Greene, Washington, and Westmoreland Counties in Pennsylvania. Coal has been mined in Pittsburgh since the 18th century. U.S. Steel and Bethlehem Steel owned Karen, Maple Creek, and Ellsworth ...
The term Western Coalfield (or Western Coal Field) is used to define the region with Pennsylvanian-age strata, largely sandstone and shale, in contrast to the Mississippian-age limestone of the adjoining and older Pennyroyal region. A transitional zone, generally defined as being part of the coalfield, is the Clifty Area, where there is no coal ...
The company operated the Coal Hill Coal Railroad, a 1.5-mile (2.4 km), 3 ft 4 in (1,016 mm) narrow gauge railroad until 1871, when it was sold to the Pittsburgh and Castle Shannon Railroad, which lengthened the line. [5] The company assumed control of the Montour Railroad in 1901. Coal miner Louis Shafer, Pittsburgh Coal Company (1946).
Cattamarra Coal Measures, Jurassic geological part of the Perth Basin, Western Australia; Pennine Coal Measures Group, Pennine coal-bearing succession of rock strata in the United Kingdom; Warwickshire Coalfield, Lower and Middle Coal Measures principal coal seams (in stratigraphic order i.e. youngest/uppermost first)
In 1910, the newly created U.S. Bureau of Mines leased a 38-acre tract of land from the Pittsburgh Coal Company and opened the Experimental Mine. One of the early findings in the Experimental Mine demonstrated that coal dust by itself was capable of propagating an explosion even in the absence of any methane gas. This demonstration was contrary ...