Brett Gravel Pit
Washington State University Libraries
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Brett Gravel Pit
A part of the Brett Gravel Pit as it appeared in April of 1940. Buggies, drawn by tractors are supplementing the lateral conveyors in moving material to the main belt which is seen here discharging into the raw stockpile. About 75% of the gravel deposit consisted of hard, dense basalt, and 10% granite, with small percentages of other rocks making up the remainder. The government furnished the raw aggregate material, and the contractors processed and delivered it to the mixing plant as part...
The sand ratio for the concrete mix for the Grand Coulee construction project was stipulated at 28%, however Brett pit had a much higher ratio of 65% sand. This led to 3,000,000 cubic yards of spoil being rejected while constructing the base and more than ten million yards wasted upon completion of the dam. (Clifford R. Koester. A History of the Columbia Basin Project II, 144)
Part of Western Waters Digital Library: http://harvester.lib.utah.edu/wwdl/; Photographer Unknown
Clifford R. Koester
Brett gravel pit (Wash.)--Cement--Grand Coulee Dam; Spoil banks--Washington (State)--Grand Coulee Dam; Conveying machinery--Washington (State)--Grand Coulee Dam; Grand Coulee Dam (Wash.)--Design and construction --Materials
Concrete; Conveying Systems--Washington (State)--Grand Coulee Dam
United States--Washington (State)--Grant County--Grand Coulee Dam site, Grand Coulee Dam (Wash.)
Manuscripts, Archives, and Special Collections, Washington State University Libraries: http://www.wsulibs.wsu.edu/holland/masc/masc.htm
A History of the Columbia Basin Project (Vol. 2, Page 117)-Cage 709: Clifford R. Koester Papers, 1927-1972: http://www.wsulibs.wsu.edu/holland/masc/finders/cg709.htm
To order a reproduction please see: http://www.wsulibs.wsu.edu/holland/masc/policies.htm , or contact Washington State University Libraries, Manuscripts, Archives, and Special Collections: (509) 335-6691.
For permission to publish please contact Washington State University Libraries, Manuscripts, Archives, and Special Collections: (509) 335-6691.
Original photographic prints were scanned at 24 bit 3000 pixels by the long side for master TIFF files on an Plustek OpticBook 3600 Plus. Also, 24 bit 150 PPI JPEGs were created with the OpticBook 3600 Plus and added to the CONTENTdm database at the WSU Libraries