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Geology of the Fourmile pegmatite area, Custer County, South Dakota
Jack Allison Redden
1955, Open-File Report 55-145
The Fournile pegmatite area covers 32 sq. mi. in the western part of the Custer pegmatite mining district, Custer County, South Dakota. This area has been one of the major sources of sheet mica in the United States, especially between 1906 and 1911, and it has been a significant source...
Preliminary report on the potential waterpower of Grant, Ptarmigan, Cooper and Crescent lakes on the Kenai Peninsula, near Seward, Alaska
Arthur Johnson
1955, Open-File Report 55-74
Grant, Ptarmigan, Cooper, and Crescent Lakes, located in the Kenai Mountains in the upper portion of the Kenai River Basin, approximately 25 miles to the north of Seward, present favorable opportunities for the development of waterpower. Grant and Ptarmigan Lakes can be made readily accessible by roads from the Seward-Anchorage...
A flood-flow formula for Connecticut
B. L. Bigwood, M. P. Thomas
1955, Circular 365
A study of the frequency and magnitude of floods within the Connecticut area is contained in this report. Annual flood discharges for 44 stream-gaging stations whose records range in length from l0 to 40 years are presented and a regional flood-frequency relationship developed based upon the ratios of all floods...