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1 The setting  2 Purpose and scope of this report . _ 4 List of final reports . 4 Open-file reports  5 Aerial photographs _ ___ ___  5 The U.S. Geological Survey-Appalachian Regional Commission interagency agreement _ 5 Other participants in The Appalachian Regional Commission's land-use and physical resource analysis program  8 Acknowledgments  8 Limits of applications of USGS-LUPRA reports ___. 9 Designed product audiences . 9 Base maps  9 Geologic studies '. 10 Earth-disturbance inventory and analysis of susceptibility to landsliding  _ 10 Methodology . 10 Reports . 11 Applications of reports  13 Maps showing underground coal-mining activity that can relate to surface subsidence, Allegheny, Washington, and Westermoreland Counties, Pa _. _ 13 Methodology  13 Reports _ 13 r ^ ____ _ -J  __ Application of maps   15 Integration of results of the geologic studies with existing data and summary of geologic and hydrogeologic results  15 Methodology . 15 Reports  16 Applications of reports   19 Hydrogeologic studies .  20 Reconnaissance appraisal of the role of shallow ground water in mining and slope-stability problems, incuding problems associated with periods of intense precipitation such as accompanied tropical storm "Agnes" in June 1972, Allegheny County, Pa  20 Methodology . 20 Reports __... 20 Applications of reports  21 Summary of results and findings . 21 Landsliding . 21 Flooding . 23 Mine subsidence , 23 Other processes and problems . 24 Evaluation of methodologies .*_ 24 Earth-disturbance inventory ,. 24 Maps showing underground coal-mining activity that can relate to surface subsidence  25 Integration of results of the geologic studies ____. 25 Reconnaissance appraisal of the role of shallow ground water in mining and slope-stability problems._ 25

Environmental geology, Allegheny County and vicinity, Pennsylvania: Description of a program and its results