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Page 6326, results 158126 - 158150

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Coal investigations in the Homer district, Kenai coal field, Alaska, in 1950 and 1951
Edward Huntington Cobb
1952, Open-File Report 52-25
This report presents the results of work done in the last three weeks of the 1950 field season and in all of the 1951 season, and supplements reports by Barnes (19149) and Cobb (1950, 1951). Barnes' report covers investigations of coal-bearing rocks of the Tertiary Kenai formation in a coastal...
Stratigraphic sections of the Phosphoria formation measured and sampled in 1951
Thomas McGiffin Cheney, J.A. Peterson, M.A. Warner, R.A. Smart, R.G. Waring, R.P. Sheldon
1952, Open-File Report 52-23
The first four of a series of reports giving detailed stratigraphic sections and analyses of samples of the Phosphoria formation in the western phosphate field as described and sampled by the U. S. Geological Survey will soon be published as Circulars 208 through 211. Because of the needs of industry...
Water resources of the Lake Erie shore region in Pennsylvania
John William Mangan, Donald W. Van Tuyl, Walter F. White
1952, Circular 174
An abundant supply of water is available to the Lake Erie Shore region in Pennsylvania. Lake i£rie furnishes an almost inexhaustible supply of water of satisfactory chemical quality. Small quantities of water are available from small streams in the area and from the ground. A satisfactory water supply is one...
Geochemical and mineralogical methods of prospecting for mineral deposits
A. Ye Fersman, S. A. Borovik, G.V. Gorshkov, S.D. Popov, A.F. Sosedko, Lydia Hartsock, A.P. Pierce
1952, Circular 127
Fersman's book "Geochemical and mineralogical methods of prospecting for mineral deposits" (Geokhimicheskiye i mineralogicheskiye metody poiskov poleznykh iskopayemykh) covers all petrographic, mineralogical, and geochemical techniques that are used either directly or indirectly in mineral exploration. Chapter IV is of particular interest because it describes certain geochemical methods and principles that...
Topographic instructions, Book 3, multiplex procedure; Chapter 3 C7a-e
Edward I. Loud
1952, Circular 164
By direct projection of overlapping photographs, printed on glass plates, the multiplex produces an exact optical model, in miniature, of the terrain to be mapped. To create the model, the multiplex projectors must be properly positioned and oriented so that they duplicate the orientation of the aerial camera at the...