File:Diagram of percussion drilling.jpg
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Diagram_of_percussion_drilling.jpg (635 × 548 pixels, file size: 29 KB, MIME type: image/jpeg)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:54, 21 August 2009 | | 635 × 548 (29 KB) | Marktielewestra (talk | contribs) |
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