NCJ Number
35974
Date Published
1971
Length
6 pages
Annotation
THIS TRAINING KEY DISCUSSES THE IMPORTANCE OF FOOTPRINTS AND TIRE TREAD IMPRESSIONS AS WELL AS THE CASTING PROCEDURES USED TO PRESERVE THIS EVIDENCE.
Abstract
IMPRESSION AND SURFACE FOOTPRINTS AND WHAT THEY REVEAL ABOUT WALKING PATTERNS ARE EXAMINED. CHARACTERISTICS WHICH SHOULD BE EXAMINED IN TIRE IMPRESSIONS ARE ALSO EXPLORED. PLASTER CASTING TECHNIQUES INCLUDING MAKING AND REMOVING CASTS AND CASTING ON IRREGULAR SURFACES SUCH AS POWDERY SUBSTANCES AND SNOW ARE REVIEWED. A DISCUSSION GUIDE AND SUPPLEMENTAL READING SUGGESTIONS FOLLOW THE TEXT.