Image:Drill bit tricone worn.jpg
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Drill bit, oil, tricone, worn
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This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of 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
Duk 06:26, 15 Feb 2005 (UTC)
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 20:54, 3 November 2006 | 1,624×1,312 (1.5 MB) | David.Monniaux | (cropping) |
| 19:08, 5 November 2005 | 2,048×1,536 (2.06 MB) | Bushytails | (high-res version from same source.) | |
| 06:22, 15 February 2005 | 800×600 (86 KB) | Duk | (Drill bit, oil, tricone, worn) |
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