OSHA Expert Witnesses in Colorado

Occupational Medicine, Industrial Hygiene - Toxicology, Mold, Indoor Air, OSHA, metals (arsenic, chromium, lead, mercury), ethylene oxide, ethylene dibromide, chemical exposure, Medical Standards, Workers Compensation, Firefighter, Law Enforcement Officer, Police Officer, Deputy Sheriff, Disability Evaluation, Return to Work, MD, CIH.

Assistant Professor at the College of Medicine of the University of Central Florida. Board Certified in Occupational Medicine, Residency Trained at Johns Hopkins, and a Fellow of the American College of Occupational and Environmental Medicine (FACOEM). Certified Industrial Hygienist (CIH) and Certified Safety Professional (CSP). Certified Independent Medical Examiner (CIME). Medical Officer for the Federal Occupational Safety and Health Administration (OSHA). Member of the national committee that determines safe exposure levels to chemicals in the workplace (Threshold Limit Value Committee (TLV) of the American Conference of Governmental Industrial Hygienists (ACGIH)). Member of Scientific Review Panel for the Hazardous Substance Data Base (HSDB) maintained by the National Institutes of Health. Member of the national committees that develop medical guidelines for employment as a firefighter (NFPA 1582 Technical Committee) and a law enforcement officer (ACOEM LEO Medical Guida...

OSHA, Construction - OSHA, Construction, Fall Protection, Multi-Emplyer, Fall Prevention, Slips, Trips, Falls, Scaffold, Work Zone, MUTCD, Crane, Steel Erection, Excavation, Silica, Lead, Tunnel, Confined Space, MEWP, scissor lift, aerial lift, Struck by Equipment, back over, catastrophic injury, amputation, crush

Over 30 years as a safety executive and OSHA compliance manager, trainer, advisor, and leader on major construction projects throughout the USA. Expert at applying OSH Act of 1970 standards, regulations, policies, and Letter of Interpretation. Experience includes over 50 OSHA inspections and associated negotiation and defense preparation related to OSHA citations. Expert at incident investigation, accident reconstruction, and injury management and investigation. Extensive experience and expertise in MUTCD Traffic Controls and rules. AREAS OF EXPERTISES INCLUDES: • Liability Assessment & Contractor Duty of Care • Accident Investigation & Root Cause • Aerial Lifts, MEWP • Construction Safety/Accidents • COVID Safety & Pandemic Management • Crane Safety, Critical Pick Planning, & Rigging • Disaster & Emergency Management • Dive/Underwater Operations • EM-385 U.S. Army Corps of Engineers • Excavation, Trenching, & Soil Mechanics • Slip, Trip, Falls, Stirs & Floor Safety Certi...

Human Factors, OSHA - Warnings Design & Testing , OSHA, Product Safety, Industrial Safety, Chemical Safety, HazComm & FHSA labeling requirements, Electrical Safety, Construction Safety, Fall Protection, Personal Protective Equipment, Consumer Product Safety, Human Factors, Perception-Reaction time, Backup Alarm

Dr. Purswell is a Registered Professional Engineer and a Certified Professional Ergonomist. He has designed and tested on-product warning labels as well as product instructions for consumer and for industrial products. He has published several papers on the use of OSHA's "General Duty" clause to cite employers for ergonomics hazards. He has also published several papers evaluating the effectiveness of backup alarms. With his CSU-Pueblo students, he has published papers on hazard analyses of consumer and industrial products. Dr. Purswell has performed usability testing on medical devices, including developing the test protocols and conducting usability testing with different populations. Dr. Purswell & his co-authors were named as Finalists for the 2014 Health Devices Award Achievement by the Emergency Care Research Institute. Dr. Purswell has been retained by attorneys around the US to evaluate the ergonomics and safety aspects of matters in litigation. He has testified at trial in...

OSHA, Safety - Grain Bin Engulfment, Lockout/Tagout, Machine Guarding, OSHA Regulations, Grain Augers/Belt Conveyors, Industrial Accidents, Skid-steer Loaders, Forklift, Front End Loaders, Agricultural Equipment Operations, Telehandlers, Confined Spaces

Board Certified Safety Professional (CSP) with a Master’s Degree in Safety Management and an Associate of Risk Management (ARM). Twenty years- experience as a safety consultant working with clients in General Industry and Agribusinesses to prevent incidents and protect workers. Speaker at state safety conferences and trade associations. OSHA Authorized General Industry Trainer for 10 and 30 Hour courses. Ives certified trainer for forklifts, telehandlers, skid-steers, front end loaders, back hoes, boom lifts and scissor lifts. Conducted fatality and catastrophic incident investigations for clients to determine cause of incidents. Audited client’s safety programs to determine compliance with government regulations and determine areas for improvement. Assisted clients with OSHA inspections and citation abatement. Assisted clients with safety program development and conducted safety training. Trained workers where English is a second language. Professional member o...

Audiology, OSHA - Audiologist, Hearing, Tinnitus, Hyperacusis, Air Bag Deployment Hearing Injury, Hearing Aids, Hearing Aid Fitting Techniques, Hearing Handicap, Tinnitus Handicap, Worker's compensation, CAOHC Certified Occupation. Hearing Loss, Audiometric Assessment, Audiology Malpractice. Hearing Product injury.

46 years of clinical practice in audiology, hearing industry consultant, trainer, professor, conference speaker, practice manager, author and former military audiologist. 50 years teaching courses and training clinicians within the field of audiology with specific emphasis in hearing loss, tinnitus rehabilitation, noise induced hearing loss. Adjunct Faculty in Audiology at the Rush University, Chicago, IL; Salus University, Elkins Park, PA; and The University of Arkansas for Medical Sciences, Little Rock, AR. Experience includes: • Clinical Audiology - Hearing Assessment - Hearing Rehabilitative Treatment, Hearing Aids, Hearing Conservation, • Tinnitus Treatment and Rehabilitation (Since 1978) • Former Member, Board of Directors, American Tinnitus Association Member, Forensic Expert Witness Association • Hearing Instruments, Hearing Instrument Fittings, Professional Selling techniques, Hearing conservation, Former Army Audiologist • Air bag deployment and Hearing/Tinnitu...