| | Report (issue) | Valley-type lead-zinc occurrences in central Pennsylvania Stephen S. Howe Open-File Report 88-250 This...Figure 1. Generalized geologic map of central Pennsylvania showing sample locations within the eight most...a 5000 square km region of central Pennsylvania including Centre, Huntingdon, Blair, and Bedford Counties...Milesburg, Julian, and Skytop, Centre County; Mapleton, Huntingdon County; Birmingham, South Sinking Valley...Valley, and Roaring Spring, Blair County; and Woodbury, Bedford County. Minor exploration and mining have | | | Report (issue) | LEAD OCCURRENCES IN PENNSYLVANIA Robert C. Smith, II COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL...ZINC AND LEAD OCCURRENCES IN PENNSYLVANIA Robert C. Smith, II PENNSYLVANIA GEOLOGICAL SURVEY FOURTH SERIES...1977 Copyright 1977 by the Commonwealth of Pennsylvania Quotations from this book may be published...published if credit is given to the Pennsylvania Geological Survey COVER ILLUSTRATION: Photograph of 1852 lithograph...STATE BOOK STORE, P. O. BOX 1365 HARRISBURG, PENNSYLVANIA 17125 PREFACE The purpose of this report is |
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Lamb's Gap, Mount Eagle, Centre County, Pennsylvania, USA