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Geology of anthracite in the east-central part of the Mount Carmel quadrangle, Pennsylvania
Howard Eugene Rothrock, Holly C. Wagner, Boyd R. Haley, Harold H. Arndt
1951, Coal Map 10
The Pennsylvania anthracite fields, the principal source of anthracite in North America, are in the eastern part of the Commonwealth of Pennsylvania. The coal occurs in four elongate areas - Northern, Western Middle, Eastern Middle, and Southern fields - that trend northeastward and lie in echelon arrangement. The fields range...
Exploratory drilling in the Prairie du Chien Group of the Wisconsin zinc-lead district by the U.S. Geological Survey in 1949-1950
Allen Van Heyl, Erwin J. Lyons, Allen F. Agnew
1951, Circular 131
The U. S. Geological Survey in cooperation with the Wisconsin Geological and Natural History Survey explored the Prairie du Chien group in the main productive area of the Wisconsin zinc-lead district during 1949-50. Eight properties--Crow Branch diggings, Leix, Harris, Spitzbarth, Kennedy, James, Raisbeck and Vinegar Hill Roaster--were explored using both...
Stratigraphic sections of the Phosphoria formation in Montana
R. W. Swanson, M. R. Klepper, W.R. Lowell, F.S. Honkala, E. R. Cressman, D.A. Bostwick, O.A. Payne, E. T. Ruppel
1951, Open-File Report 51-18-B
The first of a series of reports giving detailed stratigraphic sections of the Phosphoria formation in the Western phosphate field as measured and described by the Geological Survey will be released as Circulars within the next few months. Because of the needs of industry for many of these data during...