Collecting Footwear and Tire Impressions in Snow

A free online course, "Collecting Footwear and Tire Impressions in Snow," will air January 29, 2014, from 1-2 pm ET.

From footwear to tire to snowmobile impressions, snow impressions can provide extremely valuable evidence in helping to resolve criminal investigations. Unfortunately, photographing and obtaining a cast of a snow impression is often a challenge for the crime scene examiner. This presentation will review techniques for photographing and casting snow impressions found at the crime scene. Methods for utilizing dental stone, fast setting plaster, and sulfur cement casting of snow impressions will be examined, showing how the type of snow and weather conditions may determine which casting technique to use.

Register for the course.

 
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Lifting Latent Fingerprints from Difficult Surfaces

ALMOST ANYONE can find, process, and lift a latent print that happens to be in a logical and obvious place like a door handle, a beer can, or a butcher knife. But sometimes, a latent print is not just sitting there in a logical and obvious place. Sometimes, you have to use your imagination to find the print and your skills to lift it.

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