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File:Drill bit tricone worn.jpg

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Drill bit, oil, tricone, worn


Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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source: http://quake.wr.usgs.gov/drillhole/photos/med-worn_drill_bit.html archive copy at the Wayback Machine

Duk 06:26, 15 Feb 2005 (UTC)

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Date/TimeThumbnailDimensionsUserComment
current20:54, 3 November 2006Thumbnail for version as of 20:54, 3 November 20061,624 × 1,312 (1.5 MB)David.Monniaux (talk | contribs)cropping
19:08, 5 November 2005Thumbnail for version as of 19:08, 5 November 20052,048 × 1,536 (2.06 MB)Bushytails~commonswiki (talk | contribs)high-res version from same source.
06:22, 15 February 2005Thumbnail for version as of 06:22, 15 February 2005800 × 600 (86 KB)Duk (talk | contribs)Drill bit, oil, tricone, worn

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