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Purswell & Purswell, Inc.
Dr. J.P. Purswell
2035 Mulligan Dr.
Colorado Springs,CO, 80920, United States
Accepts assignments as an expert witness? True
Accepts other consulting assignments? True
Specialties: Accident analysisAccident analysisAnthropometry (human body measurement)Anthropometry (human body measurement)Cumulative trauma/repetitive stressCumulative trauma/repetitive stressIndustrial ergonomicsIndustrial ergonomicsJob analysis/designJob analysis/designMedical products/systemsMedical products/systemsOccupational safety/healthOccupational safety/healthOSHA complianceOSHA complianceProduct design/safetyProduct design/safetySafetySafetyTest/evaluationTest/evaluationTraining/educationTraining/educationUsability testingUsability testingWarningsWarningsWorkplace/workstation design/analysisWorkplace/workstation design/analysis
Additional Expertise Areas: -expert witness services dealing with the topics listed above as well explaining the following topics to jurors: -lockout/tagout, -machine guarding, -safety training, -product warnings and their use, -training and supervision of the use of PPE (respirators, hearing protection), -perception/reaction time issues, -hand tool design, -confined space entry, -the range of population capabilities to see and hear various warning signals, -the range of population capabilities to exert a certain amount of force in a specific posture, -biomechanics, -fall protection, -risk perception -measurement of force, light, sound and vibration with NIST-traceable calibrated instruments; -safety audits for employers and benchmarking of safety performance against industry performance; -hazard analysis; -warnings development, warnings evaluation; -safety data sheet development, safety data sheet evaluation; -"How to prepare for an OSHA Inspection" training; -"Overview of OSHA training requirements for General Industry" training;
Educational Background: Ph.D. in Industrial and Systems Engineering (concentration in Human Factors),1997, Virginia Tech; M.S., Industrial Engineering, 1989, University of Oklahoma; B.S. Chemistry/Biology (double degree) 1986, Oklahoma Baptist University.
Supplemental Background:Certified Professional Ergonomist, Registered Professional Engineer and past Chair of IE PE Exam committee, Member of ASSE Senior Member of IIE, Member of HFES, ACGIH, and AIHA
Consulting Experience: Various attorneys: Consultation and testimony regarding warnings, hazard communication, ergonomic work practices (including FELA cases), machine guarding, lockout/tagout, perception/reaction time, backup alarms, ladder safety, vibration exposure, audibility of train horns, training and use of personal protective equipment, fall protection, risk perception; convenience store chain - gasoline pump warnings; craft store chain - craft supplies warnings, safety data sheets; deer stand manufacturer: product warnings; brake pad manufacturer: product warnings; crane manufacturer: control design; ceramic tile manufacturer: plant safety audits; hospital chain - designed and conducted usability studies of hospital beds being considered for purchase, prepared report.
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