Lightning Expert Witnesses

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 more than 100 times, and has testified at trial over 20 times. 

Areas of Expertise:

View Dr. Purswell's Consulting Profile.

A Licensed Professional Engineer in 21 states, John Averrett specializes in Electrical Shock / Electrocution, Utilities, Arc Flash, Lightning Strikes, and Grounding cases involving death, personal injury, industrial equipment failure, vehicular accidents, fire cause/origin, contract, and construction disputes. 

Areas of practice include: Alabama, Florida, Georgia, Mississippi, Tennessee, South Carolina, Texas, North Carolina, Louisiana, Kentucky, Arkansas, Virginia, Oklahoma, Missouri, West Virginia, Illinois, Ohio, Indiana, Maryland, Kansas, Delaware, and Wisconsin; other states by comity as needed through NCEES.

John Averrett is Executive Vice President of Goodwyn Mills & Cawood headquartered in Montgomery, AL. He has more than 25 years experience in plan development for governmental, municipal, industrial and commercial clients and is currently coordinating a group of twelve other electrical engineers and designers. In addition to his design efforts, Mr. Averrett's experience includes work with electric utilities that includes transmission, sub-stations, and distribution; work with investigating lightning strikes; work with investigating grounding insufficiencies; and work analyzing and providing solutions for arc flash hazards.

Litigation Support - Mr. Averrett offers expert witness services to attorneys representing plaintiff and defendant. He provides site review, thorough reporting, deposition, and trial testimony as needed nationwide.