Record Details

Diamond Drill and Operator

Washington State University Libraries

Field Value
Title Diamond Drill and Operator
Description This is a diamond drill rig in operation. A compressed-air motor rapidly spins the hollow shaft, down which water is forced to cool the bit, and carry away the cuttings. The core specimen rises in the hollow drill stem as the bit cuts downward. Diamond drilling is the oldest form of core drilling known. Scientists claim that the ancient Egyptians used a form of diamond core drill. About 1863, in his efforts to make a core drill wear longer, a French engineer invented the modern diamond... In a study to determine the best location for the dam Engineers used diamond drilling to determine the composition of the Grand Coulee Dam site. Later they would utilize diamond drills to create grout holes that were pressure grouted to fill cracks and crevices in the light colored granite foundation. (Clifford R. Koester. A History of the Columbia Basin Project II, 164)
Relation Part of Western Waters Digital Library:; Photographer Unknown
Creator Clifford R. Koester
Subject Construction equipment--Washington (State)--Grand Coulee Dam; Drilling and Boring Machinery--Washington (State)--Grand Coulee Dam; Calyx drill core--Washington (State)--Grand Coulee Dam Construction equipment; Laborers; Surveying; Drilling and boring machinery
Type Photograph
Coverage United States--Washington (State)--Grant County--Grand Coulee Dam site, Grand Coulee Dam (Wash.)
Identifier 709b1v2p165.jpg,1018
Publisher Manuscripts, Archives, and Special Collections, Washington State University Libraries:
Source A History of the Columbia Basin Project (Vol. 2, Page 165)-Cage 709: Clifford R. Koester Papers, 1927-1972:
Rights To order a reproduction please see: , 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.
Format 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
Language English
Date 2008

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