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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...
Detroit River group in the Michigan basin
Kenneth K. Landes
1951, Circular 133
This report attempts to correlate the outcropping rocks in the type locality of the Detroit River group with the thick sequence of rocks that has been explored by many drilled wells in the Michigan Basin during the last twenty years. The surface nomenclature as recently revised (Ehlers, 1950) is suggested...
Preliminary report on the Apex and Paymaster mines, Washington County, Utah
Arthur R. Kinkel Jr.
1951, Open-File Report 51-1
The Apex and Paymaster mines in the Tutsagubet mining district, 25 miles southwest of St. George, Utah, are at an elevation of about 5,000 feet in the Beaver Dam Mountains. The ore was deposited in a steeply dipping fault zone which cuts a thick series of gently dipping limestones of...