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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	Date/Time	Thumbnail	Dimensions	User	Comment
current	07:52, 5 October 2013		325 × 311 (222 KB)	Winona (talk | contribs)
	02:08, 3 April 2013		340 × 325 (222 KB)	Winona (talk | contribs)

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The following 3 pages link to this file:

• Drilling or digging
• Forage ou excavation
• 钻井或挖掘井

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Horizontal resolution	28.35 dpc
Vertical resolution	28.35 dpc
File change date and time	05:40, 5 October 2013