Steve Koch, a latent prints expert at the Kansas Bureau of Investigation, is one of 30-some "certified footwear examiners" in the world. Koch is pictured on Wednesday at the KBI in Topeka.
Steve Koch pays close attention to tread patterns, tears in the rubber, rocks lodged bewteen the tread and so forth to help identify shoes.
A KBI latent prints lab coat.
Steve Koch's shoe investigative research helped to convict Gary Kleypas in the death of Carrie Williams in Crawford County.
Steve Koch displays plaster mold of a common shoe tread in the latent prints lab on Wednesday at the KBI in Topeka.
Powder is applied with fine brush to the bottom of a shoe, which will provide a well-defined shoe print of the sole.
The KBI makes a photocopy on transparency paper of shoe impressions to try to match those found at crimes scenes.
Steve Koch explains how he makes footprint data is collected from a crime scene.
Steve Koch keeps a number of shoe soles on file, which he uses for training purposes.
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