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Original file (1,624 × 1,312 pixels, file size: 1.5 MB, MIME type: image/jpeg)
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Drill bit, oil, tricone, worn
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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)
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | 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~commonswiki | 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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