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A dispatcher loaded the various finished aggregates on the main hauling belt as the tripper operator at the mixing plant stockpile directed him by telephone. <br> Such a conveyor system, with a belt 48" wide, 10,000 feet long, and traveling 700 feet per minute, was a simple and amazingly rapid method of moving large quantities of such material. The belt weighed about 80 tonnes. <br> The previous record length for a single belt was held at O'Shaughnessy Dam in California (3,300...
This record breaking conveyor belt allowed construction crews to excavate large amounts of spoil from the Grand Coulee Dam Site. It was the largest ever constructed at the time and did on occasion collapse on the unsteady foundations of spoil it ejected into Rattlesnake Canyon.
Part of Western Waters Digital Library: http://harvester.lib.utah.edu/wwdl/; Photographer Unknown
Clifford R. Koester
Belt conveyors--Design and construction--Washington (State)--Grand Coulee Dam; Conveying machinery--Construction--Washington (State)--Grand Coulee Dam; Conveying machinery--Washington (State)--Grand Coulee Dam
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 122)-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