Mr. Warren began to work with Throop Rock Bit in 1977. When Throop was acquired in 1991 he came to the new company as a welder and assembler, progressing into supervision and design. By 1993 he was in charge of marketing and sales and in 2008 was elected President and to the Board of Directors. Education: Business, Northern Oklahoma College and Northwestern Oklahoma State University

Mr. Harpster has worked for Fortune 500 companies as an auditor evolving into negotiator and executive manager roles before becoming an independent investor/consultant. He acquired Asbury Machine Corp in 1990 and Throop Rock Bit in 1991, and serves on the Board of Directors. Education: University of Texas BBA, CPA , Texas Christian University MBA

Mr. Brown began working for Asbury Bearing Corporation in 1984 as a machinist. When Asbury Bearing was acquired in 1990 he started progressing into supervision, appointed plant manager in1991 with official responsibility of Purchasing Manager in 2006. Education: Machine Tool Technology, Pioneer Vocational Technology School

Mr. Warren's previous experience includes working at Continental Data Graphics revising illustrated parts catalogs for Boeing 747 projects. He began working at Asbury Machine Corporation in 1998 assembling bits, then OJT as a machinist. By 2001 he was in charge of mill programing and lead man on night shift, progressing through supervisory roles to production manager. Education: Industrial Electronics, Pioneer Vocational Technology School

Mr. Smith amassed thirty years of experience with Smith International Bits before joining Throop Rock Bit in 2009 to formalize the design activity and enhance quality control. Education: Northern Oklahoma College, Applied Science – Design and Drafting