We are a forensic expert consulting firm specializing in the biomechanics of human motion & injuries, walkway safety, and accident reconstruction. Mark Blanchette, PhD markblanchette@sempersci.com John Brault, MS johnbrault@sempersci.com Brad Rutledge, MS PE bradrutledge@sempersci.com Why Choose Semper Scientific? Over 30 years of experience advising our clients in the legal community. More than 9,000 technical investigations performed. Expert testimony in more than 400 trials. Get In Touch