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Date: 2009-05-14 07:36:30Oil wells Technology Engineering Petroleum production Petroleum geology Petroleum industry Petroleum engineering Tools Drilling rig Casing Water well Sludging | Pounder Drilling Rig Design ReviewAdd to Reading ListSource URL: www.watersanitationhygiene.orgDownload Document from Source WebsiteFile Size: 392,55 KBShare Document on Facebook |