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The Green Tree facility provides and stores, digitally and in microfilm (aperture cards), [4] over 182,000 maps of abandoned mines. This repository contains maps of mine workings from the 1790s to the present day. [5] It serves as a point of reference for mine maps and other information for both surface and underground mines throughout the ...
The CONSOL Energy Mine Map Preservation Project is a project to preserve and digitize maps of underground coal mines in Southwestern Pennsylvania.. The project is a joint venture between the Pennsylvania Department of Environmental Protection, the United States Department of the Interior Office of Surface Mining, the University of Pittsburgh University Library System, and CONSOL Energy.
Green Tree is a borough in Allegheny County, Pennsylvania, United States. The population was 4,941 at the 2020 census . [ 3 ] It is a suburb of the Pittsburgh metropolitan area .
In 1760, Captain Thomas Hutchins visited Fort Pitt and reported that there was a mine on Coal Hill, the original name given to Mount Washington across the Monongahela River from the fort. The coal was extracted from drift mine entries into the Pittsburgh coal seam at outcrop along the hillside about 200 feet above the river.
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]
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.
Before mining began, there was an estimated 22.8 billion tons of anthracite in Pennsylvania. In 2001, 12 billion tons still remained in the ground, most of which was not economically feasible to mine. [3]
The Eastern Pennsylvania Coalition for Abandoned Mine Reclamation gained $150,000 from the Office of Surface Mining for the project. The treatment cost approximately $1,900,000 and is the largest acid mine drainage treatment system in the Coal Region. [6] Around 2000, plans were made to reroute Catawissa Creek away from the tunnel. [1]