#Trace Evidence

Trace Evidence: Hair

by Kathy Steck- Flynn Edmond Locard was the founder of the Institute of Criminalistics at the University of Lyon in France. Locard believed that that when on person came in contact with…

Ninhydrin Processing

By Pat A. Wertheim This article originally appeared in Minutiae, the Lightning Powder Co. Newsletter, #45, November-December 1997. Perhaps the most productive and cost-effective method of developing latent fingerprints on paper is…

Black Powder Processing

By Pat A. Wertheim This article originally appeared in “Minutiae”, The Lightning Powder Co. Newsletter, No. 42, May-June 1997, p. 6. Although old-fashioned black powder is the workhorse of fingerprint development techniques…