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Date: 2014-10-28 18:49:18Water wells Quecreek Mine Rescue Somerset County Pennsylvania Directional drilling Borehole Oil well Coal mining Mine Safety and Health Administration Mining Petroleum Technology | REI_ad_reprint_May.qx:49 AMAdd to Reading ListSource URL: www.reidrilling.comDownload Document from Source WebsiteFile Size: 69,20 KBShare Document on Facebook |