Walt Gomolka, of Sano Drilling in Pennsylvania, conducts coring for coal exploration to depths of 1,500 feet, using NQ wireline with a Mobile Drill B37. Photo courtesy of Sano Drilling. ND
Parting Shot: December 2012
Walt Gomolka, of Sano Drilling in Pennsylvania, conducts coring for coal exploration to depths of 1,500 feet, using NQ wireline with a Mobile Drill B37. Photo courtesy of Sano Drilling. ND
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