Trace Evidence

1591 Words7 Pages
Crime scenes are known to have many clues left behind. The obvious would be a the body or bodies, clothing, and sometimes even the murder weapon. While these are great way to solve a case there's another kind of evidence; trace evidence. Trace evidence are small pieces of evidence that are laying around a crime scene. There are many types of trace evidence some of them include metal filings, plastic fragments, gunshot residue, glass fragments, feathers, food stains, building materials, lubricants, fingernail scrapings, pollens and spores, cosmetics, chemicals, paper fibers and sawdust, human and animal hairs, plant and vegetable fibers, blood and other body fluids, asphalt or tar, vegetable fats and oils, dusts and other airborne…show more content…
Glass can also hold fingerprints which can be very valuable to an investigation as the fingerprints can be taken up on tape and then ran through a database, possibly finding a match and allowing the investigators to find and capture a suspect. Weapons, pray bars, blunt objects, clothing, and shoes are where paint chips from door, walls, and furniture can be found. In order for paint to chip off there needs to be a pretty serious struggle or a pretty hard force that will chip away at the paint then causing it to land somewhere that the suspect forgot about. The Crime Scene labs have about forty thousand different types of paint in their database. The majority of paint chips are from hit and run cases involving automobiles. Dust and Dirt can determine many things to help an investigation along. It can tell the investigators where a person has been, where they work, where they live, and if they have pets in the house. Most soil samples will come from the top soil and only need to be a little bit over a tablespoon to be processed. Pollen is also included in this as it is a subtype of dust and dirt Pollen allows the investigators to know if they suspect or victim were outdoors, and if so where they could have been. Firearms that are left behind at a crime scene can be extremely helpful. This evidence includes not only the firearm itself but also the ammunition used in the firearm, componets that make up the firearms, and the residue that comes out when the
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