https://www.usgs.gov/publications/landsliding-allegheny-county-pennsylvania
Landsliding in Allegheny County, Pennsylvania | U.S. Geological Survey
Man should proceed with caution if modifications such as loading, excavation, or changes of the water regime are contemplated for slopes in Allegheny County,...
allegheny county pennsylvanialandslidinggeologicalsurvey
https://www.usgs.gov/publications/forest-clearing-and-regional-landsliding
Forest clearing and regional landsliding | U.S. Geological Survey
The influence of forest clearing on landsliding is central to long-standing concern over the effects of timber harvesting on slope stability. Here we document...
forest clearingregionallandslidingugeological