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Page 6946, results 173626 - 173650

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Summary of annual records of chemical quality of water of the Arkansas River in Oklahoma and Arkansas; 1945-52, a progress report
Tyrus B. Dover, James Walter Geurin
1955, Circular 361
The Arkansas River is subject to many types of pollution downstream from the Oklahoma-Kansas State line, and its inferior quality together with its erratic flow pattern has caused it to be largely abandoned as a source of municipal and industrial water supply. Currently, the Arkansas River is not directly used...
On the air-scattering of gamma rays from thick uranium sources
Arthur Y. Sakakura
1955, Trace Elements Investigations 595
Semiquantative interpretation of data from airborne radioactivity surveying requires detailed knowledge of air-scattered gamma-ray intensity at considerable air distances from natural, thick uranium sources. Based on the concept of an elementary source of infinite thickness rather than on the classical point source, semi-empirical expressions, are developed for measured gamma-radiation intensities from . the...
Geology of the northern Black Hills bentonite mining district
Sam H. Patterson
1955, Open-File Report 55-131
Extensive deposits of bentonite are present in the Cretaceous sedimentary rock strata cropping out on the northern flank of the Black Hills. These deposits have been the subject of a study by the U.S. Geological Survey as part of the program of the Department of the Interior for appraisal of...
Phosphate deposits in northern Alaska
William Wallace Patton Jr.
1955, Open-File Report 55-132
Deposits of low and medium grade phosphate rock were found recently at seven localities on the Arctic slope of Alaska. They were reported by field parties of the U.S. Geological Survey during the mapping of Naval Petroleum Reserve No. 4 and adjacent areas. The deposits are sedimentary in origin and...
Annual peak discharges from small drainage areas in Montana through September 1979
R. J. Omang, C. Parrett, J. A. Hull
1955, Open-File Report 80-340
Annual peak stage and discharge data have been collected and tabulated for crest-stage gaging sites in Montana. The crest-stage program was begun in July 1955 to investigate the magnitude and frequency of floods from small drainage areas. The program has expanded from 45 crest-stage gaging stations initially to 173 stations...