File:Stone hammer well drilling.PNG
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Revision as of 22:13, 9 May 2012 by Winona (talk | contribs) (uploaded a new version of "File:Stone hammer well drilling.PNG")
Stone_hammer_well_drilling.PNG (325 × 311 pixels, file size: 222 KB, MIME type: image/png)
Stone hammer well drilling. Drilling a 20 m well in Chinandega, Nicaragua, with the Rota-sludge method. Insert left: Rota-sludge drilling head. Insert right: Stones extracted with Rota-sludge.
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current | 06:52, 5 October 2013 | 325 × 311 (222 KB) | Winona (talk | contribs) | ||
01:08, 3 April 2013 | 340 × 325 (222 KB) | Winona (talk | contribs) |
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