File:Stone hammer well drilling.PNG

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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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current06:52, 5 October 2013Thumbnail for version as of 06:52, 5 October 2013325 × 311 (222 KB)Winona (talk | contribs)
01:08, 3 April 2013Thumbnail for version as of 01:08, 3 April 2013340 × 325 (222 KB)Winona (talk | contribs)
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Horizontal resolution 28.35 dpc
Vertical resolution 28.35 dpc
File change date and time 05:40, 5 October 2013
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