National Geologic Map Database
General Information
- Title: Maps showing depths to the Pittsburgh coal bed, mining activity, and related surface subsidence, Allegheny, Washington, and Westmoreland Counties, Pennsylvania
- Author(s): Bushnell, K.O.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Miscellaneous Field Studies Map MF-693-A
- Publication Date: 1975
- Map Scale: 1:125,000
- Cross Section: None
- North Latitude: 40° 40' 20" N (40.6722)
- South Latitude: 39° 56' 58" N (39.9494)
- East Longitude: 79° 0' 0" W (-79.0000)
- West Longitude: 80° 31' 19" W (-80.5219)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.