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Geology topics

Research about Allegheny County, Washington County, Westmoreland County, Pennsylvania

Source-linked reports with geographic coverage including Allegheny County, Washington County, Westmoreland County, Pennsylvania.

2 recordsLinked to original sources

USGS1975

Map showing depths to the Pittsburgh coal bed, mining activity, and related surface subsidence, Allegheny, Washington, and Westmoreland Counties, Pennsylvania

No abstract available.

Pennsylvania↗

USGS1975

Map showing areas that correlate with subsidence events due to underground mining of the Pittsburgh and Upper Freeport coal beds, Allegheny, Washington, and Westmoreland counties, Pennsylvania

No abstract available.

Pennsylvania↗