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Page 6027, results 150651 - 150675

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Ground-water contamination and legal controls in Michigan
Morris Deutsch
1963, Water Supply Paper 1691
The great importance of the fresh ground-water resources of Michigan is evident because 90 percent of the rural and about 70 percent of the total population of the State exclusive of the Detroit metropolitan area are supplied from underground sources. The water-supply and public-health problems that have been caused by...
Chemical quality of surface waters in Pennsylvania
Charles N. Durfor, Peter W. Anderson
1963, Water Supply Paper 1619-W
Pennsylvania has an abundant supply of surface water of good quality. The average rainfall over the 45,300 square miles in the State is about 42 inches per year. Of this amount, about 50 percent appears in the streams as runoff. The combined mean annual runoff of the Delaware, Ohio, and...
Fluid impact craters and hypervelocity - high velocity impact experiments in metals and rocks
H. J. Moore, R.W. MacCormick, D. E. Gault
1963, Open-File Report 63-100
The impact phenomena of hypervelocity and high-velocity projectiles with rock and metal targets are being studied in a cooperative research program conducted by the U.S. Geological Survey and the Ames Research Center of the National Aeronautics and Space Administration. This paper deals with the comparison of: (1) fluid-impact craters produced...
Stratigraphic sections and correlation of beds in the Inyan Kara Group and Morrison Formation, north end of the Black Hills, Crook County, Wyoming, and Butte County, South Dakota
W. J. Mapel, C. L. Pillmore
1963, Open-File Report 63-88
Descriptions of 47 stratigraphic sections of the Ivan Kara Group and Morrison Formation are given for an area extending from bluffs on the west side of the Belle Fourche River in T. 56 N., R. 64 W., Crook County, Wyo., southeastward across the Bear Lodge Mountains to a point in...