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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.
In the early history of Pittsburgh, Mount Washington was known as Coal Hill, but Coal Hill was actually on the south bank of the Monongahela River. [1] Easy access to the Pittsburgh coal seam's outcrop near the base of Mount Washington allowed several mines to operate there. Also, rock was quarried from the hill.
An underground transportation system connecting the Ormsby mine with other local coal mines was begun in 1867. [4] Like many mine railroads in the Pittsburgh area, this was a 3 ft 4 in (1,016 mm) narrow gauge line. [5] After the coal was removed, it was transported underground from the South Hills to industries along the Monongahela river.
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 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).
NMMR's oldest mine: 1792 anthracite coal, "Old Mine." One of NMMR's oldest mine maps: 1859 anthracite coal map from Hazleton Coal Co. The NMMR contains digital and microfilm maps of surface and underground coal, metal, and non-metal mines throughout the United States. Some of the information that can be obtained from the repository includes:
The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map. [ 1 ] There are 255 properties and districts listed on the National Register in the county, including 10 National Historic Landmarks .
Horning was founded at the opening of a coal mine along the West Side Belt Railroad by the Pittsburg Terminal Coal Company around 1903. In 1905, Philip Murray was elected president of the United Mine Workers of America local in Horning. On February 3, 1926, 20 miners were killed in an explosion in this mine. [3]