Specialties & Experience of this Expert Witness

Additional Information

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 Oklahoma, Arkansas, Illinois, New York, Georgia, Kansas, Wyoming, Missouri, Nevada, Pennsylvania, Minnesota and Colorado. Representative clients have included: • attorneys involved in litigation matters (list of prior litigation consultations available on request); • a hospital chain (usability tests and assessment of ergonomic and safety risk factors of competing medical devices); • a manufacturer of agricultural equipment (evaluation and mitigation of workplace ergonomic risk factors); • a manufacturer of a meat processor (user manual and on‐product warnings); • a manufacturer of a oven & stove (user manual and on‐product warnings); • a manufacturer of a hot tub/spa (user manual and on‐product warnings); • a manufacturer of automotive cleaning products (on‐product warnings and Safety Data Sheets); • a manufacturer of candle‐making products (on‐product warnings and Safety Data Sheets); • a manufacturer of warehouse storage rack systems (set up and use instructions); • various offices on ergonomic issues (Consultations on the selection and arrangement of components of a computer workstation to minimize ergonomic stressors);