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Mr. Tibbitts has served as Vice President of Technology of PDTI since June 2004, and served as Vice President of Technology of Particle Drilling, Inc. from June 2003 until it was merged into PDTI in June 2004. Prior to joining Particle Drilling, Inc., Mr. Tibbitts was Vice President of Technology for ProDril Services Inc. from October 2002 until June 2003. From April 2000 until October 2002, Mr. Tibbitts was an in-house engineering consultant on drilling and coring activities for TerraTek Drilling & Completions Research Laboratory. Mr. Tibbitts was employed from May 1999 until April 2000 by Pro Steel Inc as Chief Operating Officer. Prior to that time and for the majority of his career, Mr. Tibbitts worked for Hughes Christensen, one of the world’s largest makers of oil and gas drilling bits. While at Hughes Christensen, Mr. Tibbitts held the title of Director of Research and Development from 1987 until October 1998 and was responsible for managing and directing world-wide research, development, and technical support through research groups in Houston, Salt Lake City and Tulsa. He directed and managed the building of a world-class drilling research laboratory in Houston and a drilling operation in Oklahoma dedicated to field-testing and development of downhole tools. Mr. Tibbitts has over 30 years of experience in the upstream oil and gas industry, including 17 years in engineering, research, and development management. Mr. Tibbitts holds over 70 patents related to drilling, coring, and diamond cutting tools. His work has been published by the Society of Petroleum Engineers, International Association of Drilling Contractors, Society of Core Analysts, and the Journal of Petroleum Technology. Mr. Tibbitts graduated from the University of Utah with a Bachelors degree in Mechanical Engineering. | 