Criminal Investigations final

Gloves and Why

Prevent contamination of evidence. Protect from biohazards, chemicals, and drugs. Prevent transfer of DNA, fingerprints, GSR. Must wear 2 pairs and change top pair frequently

Metals in GSR

Zink, Copper, Lead, Barium, Antimony.

GSR Vacuuming and Why

When taping isn’t realistic, clothing, floor, carpet, including seats. Captures particles that may not adhere to tape or swabs. Useful when time has elapsed since discharge.

GSR Taping and Why

Most common, used for skin and clothes. Adhesive stubs or tape used to life particles from skin or surfaces.

GSR Swabbing and Why

Good for walls with holes in them. Needs hard surface and the swab needs to be in something. Effective on skin when tape may not adhere.

GSR Swabbing Procedures

1. Moisten Swab with Nitric Acid

2. Swab target area twice

3. Put into red card to see if it turns blue

GSR Taping Procedure

1. Move hand back and forth to take away wrinkles and to also show wrinkles.

2. Tape lightly

3. Mark each taping

GSR Vacuuming Procedures

1. Mark location of cleaning with tape

2. Only clean certain location

3. Take filter out and put evidence in bag and mark

4. same thing for other section

Labeling Evidence Bag Procedures

1. case number

2. date/time

3. content description

4. Location found

5. Collectors name/ number

Chain of Custody

Keep as small as possible. Record of everyone who handled the evidence. 3 main people, 1. person who collected it 2. the transporters. 3. people that analyze it

Ignitable Liquids and Issues

Gasoline, gas on a rag and thrown into a fire. Paper, cotton, fabric. Anything intentionally used to start a fire could be an ignitable. These are accelerants that make fires grow bigger, added to any material to magnify flames.

Druggist Fold

Envelope you can make with paper to help secure things like powder, hair, or fibers, when you don’t have an evidence bag.

Drugs and Deck

Deck refers to how much of the real shit it is. What is the purity level of the drug

Drugs and Cuts

Cuts refers to taking purity away form the main, around 40%-80%. Rat poisoning is added to Heroin and LSD.

Physical Effects (Opium)

Slows brain activity leading to drowsiness, sedation, confusion. Euphoria. Pain Relief, respiratory depression

Crack (User Methods)

1. Smoking (Crack pipe, straight glass tube with aluminum scrubber filter)

2. Injection

3. Snorting

Cocaine (User Methods)

1. Snorting (Social/Casual user)

2. Injection (Dangerous User)

3. Smoking (Freebase)

Physical Effects (Crack)

1. Gittery but not talkative

2. Avoidant of eye contact

3. Eyes red and glossy pupils dilated

4. More confrontational

5. Pale sweaty and appear ill

6. Paronoid

Physical Effects (Meth)

1. Awake for Long amounts of Time

2. Appetite suppression

3. Lose teeth quickly and gums will rot

4. Burnt holes in nose (If they smoke)

5. Sores on body from injection

Meth and Behavioral Effects

1. Very paranoid and aggressive, Talkative, cant keep track of what is happening

2. Compulsiveness

3. Hallucinations

Meth Labs

1.Some times are booby trapped.

2. Cars, storage facilities, apartments, garages, motel rooms (Common meth labs)

3. Isolated rural locations are ideal

4. Ventilation is extremely important

   1. Abnormal long stack on roof