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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...
Alluvial fills near Gallup, New Mexico
Luna Bergere Leopold, Charles T. Snyder
1951, Water Supply Paper 1110-A
Valleys near Gallup, N. Mex., similar to many in the Southwest, were filled in Recent time with alluvium. This material is now being eroded by systems of gullies, and the walls of these gullies provide exposures by which the history of the deposition of the alluvium can be traced.Alluvial fills...
Estimated use of water in the United States - 1950
Kenneth Allen MacKichan
1951, Circular 115
An estimated 170,000 million gallons of water was withdrawn from the ground, lakes, or streams each day on the average during 1950 and used on the farms and in the homes, factories, and business establishments of the United States. An additional 1,100,000 million gallons per day was used to generate...