Work Place Accidents Expert Witnesses: 20

Dr. J. P. Purswell, PhD, PE, CPE has extensive experience in Human Factors, Ergonomics, and Safety Engineering. He holds a doctorate in Industrial & Systems Engineering from Virginia Tech. He has taught Safety Engineering and Ergonomics in the Industrial Engineering Department at CSU-Pueblo since 1999. 

A member of the Human Factors and Ergonomics Society and the American Industrial Hygiene Association, Dr. Purswell also served as the Chair of the Industrial Engineers PE exam from 2005 to 2009. He continues to serve on the committee which is responsible for the preparation of the national professional engineering examination in industrial engineering. 

Dr. Purswell is the author of more than 20 publications and presentations on Product Safety, Occupational Safety, Printed Warnings, and Auditory Warnings. Examples of products addressed include silica, asbestos, cleaning chemicals, gasoline containers, and recreational equipment. Dr. Purswell maintains NIST-calibrated equipment for the measurement of light, sound, force, and whole-body and hand-arm vibration in addition to standard photo and video equipment. 

Litigation Support - An Expert Witness in the legal industry since 1997, Dr. Purswell has been qualified as an expert in state and federal courts across the nation in safety engineering, including safety analysis techniques such as Fault Tree Analysis and FMEA as well as product warnings / instructions and OSHA compliance issues. His services include site inspections, document review, drafting Rule 26-compliant reports, deposition, and trial testimony. He has been retained by attorneys for both Plaintiff (40%) and Defense (60%) more than 100 times, has been deposed approximately 50 times, and has testified at trial over 20 times. 

Areas of Expertise:

View Dr. Purswell's Consulting Profile.

Quality Forensic Engineering, LLC is a full-service forensic engineering firm, providing engineering support to clients in the areas of accident reconstruction, biomechanics, fire investigations, patent litigation analysis, premises liability, product liability, and tire failure analysis. We use the latest technology and industry proven techniques to provide thorough analysis and conclusions for the most difficult engineering questions. Our forensic engineers support clients throughout the U.S. Headquartered in Tallahassee, FL, we have locations in Jacksonville, FL; Melbourne, FL; Tampa, FL; Indianapolis, IN; New Orleans, LA; San Diego, CA; Charlotte, NC; Columbia, SC; and Tucson, AZ.

Dr. Brian Pfeifer, PhD, PE - Dr. Pfeifer is an Engineering Expert with over 25 years of experience investigating thousands of cases involving a variety of forensic engineering issues. He is a leading expert in accident reconstruction, roadside safety, maintenance of traffic, commercial vehicle accidents, pedestrian accidents, bicycle accidents, and the analysis of mechanical systems and product failures. Dr. Pfeifer has a strong background in the design, development, and implementation of roadside safety hardware including guardrails, bridge rails, and crash cushions. Over 33 patents have been filed worldwide on behalf of Dr. Pfeifer and associated colleagues who invented safer guardrail systems, vehicle storage systems, shipping container handling systems, and material handling and storage methods. He has also utilized his technical knowledge and understanding of patents to assist in a number of matters involving patent litigation.

Dr. Pfeifer has published numerous papers to various organizations, covering topics such as new guardrail systems, energy absorbing guardrail terminals, breakaway sign mechanisms, and material handling technology. He has shared his expertise with many organizations on topics including vehicle collisions, bicycle accidents, roadway construction zones, and accident reconstruction expert witness utilization. Dr. Pfeifer is a registered Professional Engineer in nine states and he continues to refine his skills and knowledge of accident reconstruction and roadside safety by staying current with new technology and best practices. Dr. Pfeifer has extensive experience with providing deposition and trial testimony as an Engineering Expert. See Full Bio & CV.

Expertise:

Dr. Ian M. Zeller, PhD, ACTAR, is an accomplished engineer with more than 10 years of experience in Biomechanics and Computational Dynamics fields. He has investigated hundreds of cases ranging from motor vehicle accidents, recreational incidents, medical device designs, as well as injuries from product liability all across the United States. 

Dr. Zeller has graduate level experience in computational dynamics and orthopedic biomechanics with a specific emphasis in dynamics, vibrations, joint contact mechanics, and muscle control during static and dynamic loading applications. Dr. Zeller’s past research includes clinical and computational analysis of the human body with respect to the design and implantation of orthopedic devices for the knee, hip, and spine. He has published in peer-reviewed journals and presented research at both technical and surgical conferences in North America, Europe, and Asia. Dr. Zeller also worked with surgeons across the United States in the design and assessment of knee replacement devices, including personalized and prototype devices to optimize for efficacy and safety. 

Dr. Zeller is also accredited as a traffic accident reconstructionist and continues to conduct research as well as maintain a current knowledge of developing trends and best practices in the biomechanics and engineering fields. Dr. Zeller has published to various organizations on topics ranging from knee replacement design, forward solution modeling, joint mechanics, personalized joint replacements, material structures and properties as well as biological modeling of disease distributions. He also has an extensive testifying history including depositions, trials, and arbitrations.

 See Full Bio & CV.

Expertise:

Michael R. Hill, PhD, PE, is a Biomechanical Engineer passionate about applying biomechanics techniques to solve diverse problems in forensics, medical research, engineering, biology, science, and mathematics. He is an expert in experimental, theoretical, and computational Tissue Biomechanics, with a focus on injury mechanisms, human tissue damage, and nonlinear soft tissue mechanics.

Dr. Hill’s core strengths are in orthopedic and cardiovascular biomechanics, vehicle accident reconstruction, injury consistency analysis, mechanical design, instrumentation, experimental analysis, numerical methods, simulation, statistics, and image processing. Dr. Hill has lectured in the field of biomechanics and numerical methods, and his research has been published in 16 academic articles and presented at 40 international and national scientific conferences.

See Full Bio & CV.

Expertise:

View Quality Forensic Engineering's Industrial Forensic Engineering Expert Witness Profile.

Quality Forensic Engineering, LLC is a full-service forensic engineering firm, providing engineering support to clients in the areas of accident reconstruction, biomechanics, fire investigations, patent litigation analysis, premises liability, product liability, and tire failure analysis. We use the latest technology and industry proven techniques to provide thorough analysis and conclusions for the most difficult engineering questions. Our forensic engineers support clients throughout the U.S. Headquartered in Tallahassee, FL, we have locations in Jacksonville, FL; Melbourne, FL; Tampa, FL; Indianapolis, IN; New Orleans, LA; San Diego, CA; Charlotte, NC; Columbia, SC; and Tucson, AZ.

Traci K. Campbell, P.E., CFSE, CXLT, has over 22 years of experience investigating, analyzing, and testifying in matters involving a variety of forensic engineering issues. Ms. Campbell has a strong background working in manufacturing and industrial workplaces including the design, development, and implementation of solutions to ensure safe work environments. She has also been credited as part of a team holding a patent related to safeguarding power hand tools with rotating discs. 

Ms. Campbell's special interests include amusement park and theme park accidents and safety related issues. She is also a CFSE – Certified Forensic Slip Expert, CXLT – Certified XL Tribometrist (slip index evaluation) and a certified counter balance forklift operator. Ms. Campbell has served as a presenter with the American Society of Safety Professionals (ASSP) regarding slip, trip, stumble, and fall incidents. She has shared her engineering expertise with many organizations on topics including: slip, trip, stumble, and fall incidents; electronic data in the realm of accident reconstruction; safety engineering and the engineering hierarchy; photogrammetry and other accident reconstruction techniques; OSHA compliance; and Industrial Engineering. 

Ms. Campbell is a registered and licensed Professional Engineer in five states and she continues to refine her skills and knowledge of premises liability and safety engineering by staying current with new technology and best practices.

See Full Bio & CV.

Expertise:

Brian A. Darr, P.E. IAAI-FIT(V), CFEI, has over 25 years of engineering experience which includes Tire Failure analysis on many types of tires (passenger, light truck, radial medium truck, retreads, motorcycle, etc.), Vehicle and Residential Fire Origin and Cause investigations, vehicle accident reconstruction for passenger and commercial vehicles, motorcycles, vehicle component failure analysis, and insurance fraud/consistency evaluations. He also conducts crash data retrieval (CDR) downloads for passenger vehicles and engine control module (ECM) downloads for commercial vehicles. Mr. Darr evaluates traffic signal timing relating to intersection collisions. He provides services in product and material failure analysis, cause analysis of plumbing failures, mechanical equipment and machinery failures, lightning strike investigations, nondestructive examinations and testing, product design and assessment of conformance to government, corporate, industry, safety, and international standards.

Mr. Darr has over 25 years of extensive experience with tires including design, development, manufacturing, quality investigation, race tire preparation, and testing of tires at numerous testing facilities. He worked in a tire manufacturing facility as a plant technical engineer where he investigated quality related issues, and in a Research & Development (R & D) center where he designed, developed, tested, and analyzed tires. Mr. Darr has visited numerous tire production plants such as Goodyear, Bridgestone, Michelin, and Continental tire. He has inherent knowledge of the PAX run-flat tire system and C3M manufacturing process. He also was responsible for verifying standards and regulations were met, related to tire product and tire pressure monitoring sensors.

Mr. Darr has been qualified as a tire expert in State and Federal court. He has completed forensic tire failure analysis on many types of tires in which he referenced hundreds of publicly available tire related documents. He reviews forensic tire reports from outlying offices along with providing marketing support and giving seminars nationwide. He has conducted numerous vehicle and residential fire origin and cause investigations with various findings including fires that were intentionally set, accidental, and electrical in nature. He has also conducted fire suppression system investigations. 

Mr. Darr holds multiple fire certifications and designations with the International Association of Arson Investigators and the National Association of Fire Investigators. 

See Full Bio & CV.

Expertise:

View Quality Forensic Engineering's Accident Reconstruction Biomechanics Engineering Expert Witness Profile.

Greg Gerganoff, CSP, Esq., possesses extensive experience in safety compliance and practice involving OSHA and MSHA.  He obtained is law degree from Western Michigan University, Cooley Law School and practiced general civil law for approximately 12 years in Colorado prior to entering the safety profession. Mr. Gerganoff earned a Certified Safety Professional certification and has 18 years of field safety experience in mining, oil and gas, construction, manufacturing, power plant outages, and light rail construction.

His professional safety experience includes OSHA / MSHA Safety field work and compliance with experience in the heavy construction, manufacturing, light rail construction, power plant outages, public schools, oil and gas, mining, pipeline, and trenching and excavation industries.

• Authorized Outreach Trainer for OSHA General Industry.
• PEC Safeland Basic and Core instructor (Oil and gas).
• MSHA Approved Instructor (Blue Card) for Surface, Metal/nonmetal.
• Member of the American Society of Safety Professionals.

Litigation Support: Mr. Gerganoff assists with discovery questions regarding safety matters. Safety opinions based upon statutory, administrative, judicial rulings and related industry association safety policies ancillary to OSHA and MSHA.  Mr. Gerganoff is retained by attorneys for both Plaintiff and Defendant. Some of the subject matter litigation he has handled include:

View Greg Gerganoff's Consulting Profile.

Michael P. Lawler, MS, CSP, ASP, CHST, is a Construction Safety Expert with over 30 years of experience. He offers a unique combination of formal education and "project based" technical experience working on some of the largest construction projects in the United States. 

Litigation Support - Mr. Lawler's experience includes over 50 OSHA inspections and associated negotiation and defense preparation related to OSHA citations.   His background allows him to opine on OSHA Standards and Contract Responsibility with a demeanor of care and confidence. 

Mr. Lawler is an expert at applying OSH Act of 1970 standards, CFR 1926 & 1910 regulations, policies, construction industry practices, contract responsibility, incident investigation, and accident reconstruction. Mr. Lawler analyzes how post incident details and investigations should be completed and who is responsible per the OSHA Standard and construction industry practices. He is experienced in personal injury, catastrophic injury, and fatality cases. 

Areas of Expertise: