Brian Harpster
President
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
Dan Colvin
VP & General Manager
Paul Brown
Plant Manager
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
Ron Smith
Mechanical Designer
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
JP Rothie
VP, Sales
