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Mary L. Ruhl, M.A.

General Manager

Mary Ruhl serves as general manager of the firm's offices. She directs potential clients to the appropriate staff professional. She acts as liaison with staff, responds to client needs, and assists with research and financial analysis. Serving in editorial capacity for the company's published books and flyers, she holds a master's degree in rhetoric and public address from Cornell University.


Mary L. Ruhl, M.A.

Staff Listing
Mark G. Strauss, Ph.D.
Ph.D. in Biomedical Engineering
B.S. in Mechanical Engineering
Roland A. Ruhl, B.S., E.I.T.
B.S. in General Engineering
ACTAR Accredited Traffic Accident Reconstructionist
Dwayne G. 'Red' Owen
Certified Accident Reconstructionist
Thomas F. Conry, Ph.D., P.E.
Ph.D. in Mechanical Engineering
B.S. in Engineering Mechanics
John W. Moore, CFS/D
Commercial Vehicle Safety Management Specialist
Certified in Fleet Safety / Director Level
Stephen L. Ivey
Accident Reconstructionist
Gregory M. Wright
Heavy Vehicle Maintenance and Repair Specialist
ASE Certified Master Heavy / Medium Truck Technician
Scott C. Buck
Heavy Construction Equipment Specialist
Peter A. Philbrick, Sr., CDS, CDT
Certified Director of Safety
Commercial Vehicle Safety Management
Edward C. Sebak, B.E.
Bachelor of Engineering
Tire Specialist
Laura L. Ruhl, Esq.
Vehicle Litigation Specialist
James V. Carnahan, Ph.D., P.E.
Ph.D. in Engineering Sciences
James A. Bragdon, M.S., P.E.
M.S. in Civil Engineering
Traffic and Transportation Engineer
Keith R. Erickson, B.S., P.E.
B.S. in Electrical Engineering
Michael C. Dilley
Fire Cause and Origin Investigator
Class A Private Detective
Howard D. Eskridge, M.P.A.
Master of Public Administraton
Fire Cause and Origin Investigator
Donald A. Neslund, B.A.E.
Bachelor of Applied Science
OSHA Specialist
Harry S. Wildblood, M.S.
M.S. in General Engineering
Jacqueline A. Orr, B.A.
Bachelor of Arts in Art
Graphic Artist
Carl J. Altstetter, Sc.D.
Sc.D. in Materials Science and Engineering
Scott M. Duvall, B.S.
Engineering Technician
Richard Karch, A.S.
Automotive Specialist
Paul D. Palmer, A.S.
Automotive Specialist
Robert E. Evans, B.S.
B.S. in Environment Engineering Technology
Ronald C. Steger, M.S., P.E.
Consultant Emeritus
Terry L. Miller
Heavy Vehicle Fleet Maintenance Specialist
Mary L. Ruhl, M.A.
General Manager
Andrew L. Ruhl, M.B.A.
Business Manager
FAA Certified Airframe and Powerplant Mechanic
Mary K. Dooley-Owen, B.A.
Director of Information Services


Champaign, IL
(800) 355-7800
(217) 355-7800
Scottsdale, AZ
(800) 235-2808
(480) 607-7845
Chicago, IL
(800) 278-4095
Grand Junction, CO
(888) 245-8789
Tallmadge, OH
(800) 355-7800