Brad Crotzer (Field Service Manager) has over 25 years of experience in industrial processes and the oil & gas industry.  Mr. Crotzer graduated from the Colorado School of Mines with a Bachelor of Science in Petroleum Engineering.  He was a Co-Founder of Bladestone, a consulting company that offered rig supervision and specialized in well control training to the oil & gas industry.  Bladestone consulted for companies such as BHP and Encana.

Chris Witherell, P.E. (CEO) has over 25 years of experience in equipment design engineering, design verification, project engineering, and engineering management using ASME NQA-1 quality programs for commercial nuclear power and Department of Energy clients.  He is a Founding Partner of Pressure Safety Inspectors, LLC, (PSI) a Colorado based engineering company that specializes in facility certification to rules governing infused products manufacturing and design verification (peer reviews) of solvent based extraction equipment.  PSI currently provides services in over 20 States.  He has a Bachelor of Science in Engineering with a mechanical specialty from Colorado School of Mines. He is a licensed Professional Engineer in Arizona, California, Colorado, Florida, Hawaii, Maine, Massachusetts, Michigan, Minnesota, Nevada, Ohio, Oregon, Tennessee, and Washington. 

Tel: 303-317-6877

3750 Dacoro Lane, Unit 155
Castle Rock, CO 80109

Pressure Safety Inspectors, LLC

Sarah Kaiman, CIH (Industrial Hygienist) has 15 years of experience providing environmental, health, and safety (EH&S) program support in a variety of work environments, including manufacturing, laboratory research, cleanup of contaminated sites, transportation projects, federal government facilities, and the marijuana industry. She has a passion for developing and implementing continual improvement programs aimed at improving environmental sustainability and worker health and wellness. She is passionate about seeing marijuana infused product (MIP) manufacturers be industry leaders and gain competitive edge by achieving the healthiest and most environmentally-friendly workplaces possible. She has a BS in environmental health from Colorado State University and a M.B.A from the University of Colorado at Denver.

John R. Andrzejczak, P.E. (Founding Partner) has over 35 years of experience engineering custom research and process equipment for the chemical, petrochemical, nuclear, and pharmaceutical industries.  Design experience includes the design and fabrication of pressure vessels, catalytic reactors, glovebox enclosure systems, vacuum chambers, steam sterilizers, and associated material handling equipment. He is intimately familiar with ASME Section VIII Division 1 and 2 pressure vessel design codes. Process Safety Management experience includes facilitating and scribing Process Hazard Analyses using HAZOP and What-If techniques, developing PSM systems for process plants, and developing Safety Analysis Reports for nuclear facilities. As quality assurance manager, he wrote, implemented, and maintained ASME Boiler and Pressure Vessel and ASME NQA-1 quality assurance programs.  He is a licensed Professional Engineer in Colorado, Idaho, Maryland, New York, Pennsylvania, South Carolina, Tennessee, Texas & Washington.

Todd LaBerge, P.E. (Fire Protection Engineer) has over 25 years of experience in industrial processes, hazardous materials operations, and high-piled combustible storage challenges with global manufacturing firms, property insurance carriers, the United States Department of Defense, and the United States Department of Energy.  He serves on NFPA Technical Committees as a voting member for NFPA 400 Hazardous Materials Code, and NFPA 101 Life Safety Code (Industrial, Storage, and Miscellaneous Occupancies). Todd is a licensed Fire Protection Engineer in California, Colorado, Washington, Nevada, and Georgia.

Greg Ferguson (Field Service Tech) has over 30 years of experience in the oil & gas industry.  Greg started working in high school as a roughneck and worked his way up to rig manager for Union Drilling. He has an extensive knowledge of oilfield equipment that he has used to train rig personnel, safety departments and regulatory agencies.  Before joining PSI, Mr. Ferguson spent the last 8 years auditing safety equipment for both drilling and completion rigs through the continental U.S.

Micah Christensen (Office Manager/Bookkeeper) has over 25 years of experience in managing all aspects of business offices.  Her experience includes; accounting services using quick books to manage incoming and outgoing capitol, billing and invoicing and all other expenses; managing staff and supervising all sales and field work; organizing trade show events, and working with engineers through all phases of the custom build of agricultural buildings.  She was the operations manager of a small business, which she was instrumental in expanding and developing into a profitable company.  She is highly organized, articulate and enthusiastic and loves working in fast paced environments.  She studied business at Metropolitan State University of Denver.