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Description
A closeup view of rock drill bits taken at a well location. Description from back of photo: "These its are screwed on to the end of the drill pipe and perform actual cutting operations on the bottom of the hole. When a bit becomes drill and a driller can not 'make hole' fast enough, he pulls out his drill pipe to remove the worn bit and installs a sharp one."
Type
image
Format
26.4 x 35.1 cm Black and white photograph
Identifier
14142 OS 33879 OS
Language
English
Subject
Petroleum industry and trade--Equipment and supplies Oil wells--Equipment and supplies Shell Oil Company
Place
California Ventura County (Calif.)
Source
Ventura County Superintendent of Schools, Visual Aids Department, 1987 [14142 OS] 2002 [33879 OS]
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