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Pennsylvania, United States
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11. Active Railroads: Pennsylvania
1996. Environmental Resources Research Institute. Location of active rail lines in Pennsylvania, digitized from 1:24,000 USGS topographic maps on a stable mylar base.
12. Active Underground Permit Boundaries: Pennsylvania
2018. Pennsylvania Department of Environmental Protection, Bureau of District Mining Operations. Pennsylvania state law requires those who wish to conduct mining activities within the Commonwealth submit and get approval by the Pennsylvania Dep...
13. Address Points: Allegheny County, Pennsylvania
2018. Allegheny County Division of Computer Services Geographic Information Systems Group; Modified by GDR for the Allegheny County CAD project, October 2008. This dataset contains Address Points in Allegheny County. The Address Points were created by GDR for the Allegheny County CAD project, October 2008...
14. Agricultural security areas: Pennsylvania
1996. Penn State ORSER/ERRI. Agricultural security areas from LLRWS data.
15. Air Emission Plants: Pennsylvania
2018. Pennsylvania Department of Environmental Protection. Represents the Primary Facility type Air Emission Plant (AEP) point features. Air Emissions Plant is a DEP primary facility type related to the Air...
17. Airport - Art: Philadephia, Pennsylvania
2016.