Jim Dittami, a professor in the Department of Chemistry and Biochemistry at the Worcester Polytechnic Institute, and his colleague Det. Lt. Richard D. Lauria of the Massachusetts State Police Crime Lab teach the procedures involved in
Lifting and Identifying toolmarks at the 2009 Forensic Science Workshop
Mike Wells checks a suspected tool with a gouge on a piece of wood
Mike Epstein and Dwight Tshudy prepare exemplar toolmarks of a crowbar for comparison with those from the crime scene
Mike and Dwight are still at it....
Jim Dittami compares the mark on the wood with the tip of a crowbar
Eric Schurter lifts the toolmark impression with mikrosil