Trace evidence can be found in many forms. Some of the most common types of evidence that is provided to Forensic Laboratories are paint, hairs, fibers, ropes, glass, soil, tape, and light bulbs. Each of these can be used to indicate transfers from one source to another and can therefore indicate contact between individuals or objects. When your paint as a form of evidence is usually indicates that there was vandalism, some type of vehicular crime or forced entry was involved. For example if an agency is looking for a hit-and-run suspect the laboratory will be able to provide an investigative lead to the needed agencies just by analyzing a single microscopic paint chip. By doing this it will give them the make, model, year and even possible the manufacturing plant of the evading vehicle. Fibers can be found for many different crimes such as a vehicle that has struck a pedestrian, the shards of glass at a burglary scene and also on a homicide victim who put up a struggle with his/her attacker. Glass analysis is mainly used to determine whether or not the known and questioned samples could have a common source. Submitting glass fragments are usually done if a forced entry or motor vehicle case has happened, but glass fragments have also been submitted when homicides and on drive-by shootings as well.
One common type of evidence that is submitted is tape. Tape is submitted as evidence when there is a case involving the restraint of victims, explosives and to seal letters and packages. A not so common type of evidence that is used for examination is soil.
Using soil as evidence when it comes to solving someone’s alibi can be helpful. For example if you find soil on the suspect’s footwear you can compare it to samples from the crime scene and also the location which that individual say there were at. Light bulbs are also a great form of evidence to submit. For example if you submit a headlight from a... [continues]
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