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Page 7010, results 175226 - 175250

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Stratigraphic sections of the Phosphoria formation in Idaho, 1949, part 1
R.P. Sheldon, M.A. Warner, M.E. Thompson, H.W. Peirce
1953, Circular 304
The U. S. Geological Survey has recently measured and sampled the Phosphoria formation at many localities in Idaho and other western states. These data. will not be fully synthesized and analyzed for several years, but segments of the data, accompanied by little or no interpretation, are published as preliminary reports as...
Exploratory drilling program of the U.S. Geological Survey for evidences of zinc-lead mineralization in Iowa and Wisconsin, 1950-51
Allen Francis Agnew, Arthur E. Flint, John W. Allingham
1953, Circular 231
The Upper Mississippi Valley zinc-lead district covers 2, 500 square miles of Wisconsin, Illinois, and Iowa. It is one of the oldest mining districts in the United States, as lead mining by settlers began in 1788. Zinc has been mined since 1859, and the present production is more than ten...
Floods of November-December 1950 in the Central Valley basin, California
C. G. Paulsen
1953, Water Supply Paper 1137-F
The flood of November-December 1950 in the Central Valley basin was the greatest in most parts of the basin since the turn of the century and probably was exceeded in the lower San Joaquin River basin only by the historic flood of 1862. In respect to monetary loss, the 1950...
Floods of May-July 1950 in southeastern Nebraska
Water Resources Division, U.S. Geological Survey
1953, Water Supply Paper 1137-D
Four floods occurred in southeast Nebraska during the period of May to July 1950. Two of these were the greatest known in the State if the size of the drainage areas is considered, and the other two were not so spectacular but were of notable size and of possible hydrologic...