Environmental Geology Report 1
	Engineering characteristics of the rocks of Pennsylvania by Geyer, A. R., and Wilshusen, J. P. 1982
Suggested Citation:	Geyer, A. R., and Wilshusen, J. P., 1982, Engineering characteristics of the rocks of Pennsylvania (2nd ed.): Pennsylvania Geological Survey, 4th ser., Environmental Geology Report 1, 300 p. [Available online.]
Description:	This important reference book is a supplement to the state geologic map (Map 1) and, as such, outlines key engineering, hydrologic, and geologic characteristics of rock units shown on that map. The entries include the following categories: description, bedding, fracturing, weathering, topography, drainage, porosity and permeability, groundwater, ease of excavation, cut-slope stability, foundation stability, construction material uses, and (where applicable) rock test data and associated remarks.
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