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NT15489_FinalReport.pdf

Counter-Rotating Tandem Motor Drilling System Final Report July 30, 2009 Prepared for: U.S. Department of Energy Project award number: DE-FC26-05NT15489 Recipient: Gas Technology Institute 1700 S. Mt. Prospect Road Des Plaines, IL 60018 Project Director: Kent F. Perry Executive Director Exploration and Production Research July 30, 2009