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A winter scene from the platform of the CBI trestle, showing the various cranes. On the flat car in the foreground is an outlet tube gate shell. 20 Diesel-electric trains operating on the trestle carried buckets, each containing 4 cubic yards of concrete, from the mixing plant to points on the trestle where needed, and these giant cranes lowered them to the forms.
The white Whirley Crane in the foreground was larger than standard size, as it had special silicon steel alloy booms. It weighed 120 tons and had a hoist speed of 170 feet per minute. It was powered by three motors totaling 280 horsepower. It could lift 10 tons at a 20 degree angle and 40 tons at a 45 degree angle. It could also rotate on a 360 degree axis and lift from 15 degrees to 75 degree angles.
Part of Western Waters Digital Library: http://harvester.lib.utah.edu/wwdl/; Photographer Unknown
Clifford R. Koester
Whirley crane--Washington (State)--Grand Coulee Dam
Cranes; Construction equipment
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 152-A)-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