Since then, forensic scientists use trace evidence to reconstruct crimes, and to describe the people, places and things involved in them.

During an investigation, he primarily deals with particulates and trace evidence and determines time of death by examining insect activity.

Archival records are especially useful since they can be used as supplementary evidence for physical trace evidence.

Their duties include the interpretation of trace evidence and recording of the autopsy process.

Many techniques are used in the protection of trace evidence from criminal investigations, although all must be photographed as soon as possible, and while still in place.