Subject: Coal / Spatial Coverage: Columbia County. - Yale University Library GeoBlacklight Search Results

1. Geology of anthracite in the east-central part of the Mount Carmel quadrangle, Pennsylvania

1951. 2018-06-22T18:55:48Z. 2018-06-22T18:55:48Z. Rothrock, Howard Eugene, 1893-. U.S. Dept. of the Interior, Geological Survey. English. cartographic image. Public. Pennsylvania, Columbia County, Schuylkill County, Columbia County., and Schuylkill County.

2. Geology of anthracite in the eastern part of the Ashland quadrangle, Pennsylvania

1954. 2018-06-21T19:48:45Z. 2018-06-21T19:48:45Z. Haley, Boyd Raymond, 1922-. Dept. of the Interior, U.S. Geological Survey. English. cartographic image. Public. Pennsylvania, Columbia County, Schuylkill County, Columbia County., and Schuylkill County.

3. Geology of anthracite in the western part of the Ashland Quadrangle, Pennsylvania

1953. 2018-06-21T19:58:36Z. 2018-06-21T19:58:36Z. Haley, Boyd Raymond, 1922-. Dept. of the Interior, U.S. Geological Survey. English. cartographic image. Public. Pennsylvania, Columbia County, Schuylkill County, Columbia County., and Schuylkill County.