Analysis: Tool Mark Impressions

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INTRODUCTION TO FORENSIC SCIENCE I AND II
(Lab Exercise #7)
TO: Mr. Francis Burke, Forensic Science Laboratory
FROM: Jason Skidmore, Scot Turner, Matthew Wills, and Martin Maldonado: Team Microsil
SUBJECT: Tool Mark Impressions

A. Description of Assignment

This lab was divided into two separate days. On Tuesday, January, 26tht, 2016 in the Police Academy’s Forensic Lab Room 321 at 12:29 a.m., team Microsil began the first part of their Tool Mark Impressions lab. The first part was comprised looking at tools under a stereo microscope, to see if there was any harsh marks or impressions on them. The second day was on Thursday, January 28th, 2015 at 12:31 p.m., this day was comprised of using two different Mikrosil tubes to create a gooey
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There was several rough marks on the edge and a part where it was indented, as if it struck something hard. Next, I looked at a Robo Grip clamp, it had a black handle with white paint on it, and it was 6 5/6 inches long. There was several marks on the teeth of it, which is common wear marks, but also had rust spot in between the teeth. Then, I observed a Flat head screw driver, it had a yellow handle and was 9 ¼ inches long with white paint on it. The head of the screw driver was 5/16 of an inch wide and had common wear marks. Afterward, I observed another flat head screw driver with a yellow handle, it was 7 ¾ inches long with a 3/16 inch tip. There was white spots on the screw driver and had common wear marks as well. The fifth one I observed was a Stanley chisel with a black handle, it was 7 ½ inches long with the head being ½ inches wide, it also had very strong signs of wear and the end was very noticeable. Next was a Philips head screw driver, it had a red and black handle, and had a darker tip that was 5/16 inches wide. The screw driver was 8 ¼ inches long and had some rust spots and it with common wear marks. Then, I observed a Craftsman flat head screw driver, it was 11 13/16 inches long with a 5/16 inch wide tip. It also had a red, white, and blue handle, furthermore it had rust on the tip with common wear marks. For the second part, when we took the Mikrosil solution off of the marks, you could really see the tools shape and

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