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Forensic Chemistry and Explosives MODULE No.34: Specific Approach to Scene of Explosion

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Forensic Chemistry and Explosives MODULE No.34: Specific Approach to Scene of Explosion Weblinks • http://inventors.about.com/od/estartinventions/a/explosives.htm • http://www.ch.ic.ac.uk/vchemlib/mim/bristol/tnt/tnt_text.htm • http://www.funtrivia.com/en/subtopics/The-**EXPLOSIVE**-Quiz-266249.html • http://chemsee.com/explosives-detection/resources/test-results/ • http://www.nij.gov/topics/law-enforcement/investigations/crime- scene/guides/explosion-bombing/Pages/process.aspx Suggested Readings q Forensic Science in Criminal Investigation & Trials by Dr. B. R. Sharma q Explosives by Samuel Delvin q Criminalistics: An Introduction to Forensic Science by Richard Saferstein FORENSIC SCIENCE PAPER No.5: Forensic Chemistry and Explosives MODULE No.34: Specific approach to scene of explosion q Practical Bomb Scene Investigation by James T.Thurman q Aspects of Explosives Detection by Maurice Marshall and Jimmie C.Oxley q Explosives by Rudolf Meyer, Josef Kohler and Axel Homburg FORENSIC SCIENCE PAPER No.5: Forensic Chemistry and Explosives MODULE No.34: Specific approach to scene of explosion Interesting Facts q In 1888, Albert Nobel invented a dense smokeless powder explosive called ballistite and in1889, Sir James Dewar and Sir Frederick Abel invented another smokeless gunpowder called cordite. q Cordite was made of nitroglycerin, guncotton, and a petroleum substance gelatinized by addition of acetone. q TNT is relatively unstable and can detonate when dropped or when a vehicle carrying it is hit by an IED or a bullet. q A detection/sniffer dog is trained to and works at using its senses specially sense of smell to detect substances such as explosives, illegal drugs, wildlife scat, blood etc. q The bomb disposal suit is capable of deflecting or stopping projectiles that may come from an exploded device. It stops/decreases the pressure of the blast wave being transmitted to the person inside of the suit. q The epicenter of a blast is the point on the Earth's surface, where an underground explosion originates. q In legal context, Chain of Custody (CoC) is the chronological documentation or paper trail, showing the seizure, custody, control, transfer, analysis, and disposition of physical/electronic evidence. q Sniffer bees/ wasps have been trained to detect substances such as explosive materials or illegal drugs. This proven system is not yet commercially available. FORENSIC SCIENCE PAPER No.5: Forensic Chemistry and Explosives MODULE No.34: Specific approach to scene of explosion Time-Lines Timelines Image Description 1895 The German Scientist Carl von Linde introduced carbon black packed in porous bags and dipped in liquid oxygen, known as LOX. 1934 Du Pont in 1934 invented a canned product with a formula of 92 percent ammonium nitrate, 4 percent dinitrotoluene, and 4 percent paraffin wax. 1970 In 1970, Trainer Charles R. Kirchner at the Metropolitan Police Department in Washington originated the explosive detection canine. FORENSIC SCIENCE PAPER No.5: Forensic Chemistry and Explosives MODULE No.34: Specific approach to scene of explosion Glossary A Aerial photography is taking of photographs of the ground from an elevated position such as fixed-wing aircraft, helicopters, balloons, rockets, parachutes, stand-alone telescoping and vehicle mounted poles. C Canine- It may refer to Canidae which is the biological family of Carnivorous and Omnivorous mammals including domestic dogs, wolves, foxes, jackals, coyotes, and many others. D Debris-Debris is rubble, wreckage, ruins, scattered remains of something destroyed or the pieces of something that are left after it has been destroyed in an accident such as explosion etc. P A projectile is any object projected into space by the exertion of a force. FORENSIC SCIENCE PAPER No.5: Forensic Chemistry and Explosives MODULE No.34: Specific approach to scene of explosion .
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