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Forensic Analysis Weighing Bullet Lead Evidence (2004) / Chapter Skim
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Appendix D: Glossary
Pages 130-132

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From page 130...
... D Glossary Acronyms and Terminology AAS Atomic Absorption Spectrometry Ag Silver, a metallic element sometimes present as an impurity in bullet lead Ammunition The loaded "round" commonly consisting of a primed case, propellant (powder) , and bullet As Arsenic, a semi-metallic element sometimes present as an impurity in bullet lead Bi Bismuth, a metallic element sometimes present as an impurity in bullet lead Billet A cylinder of lead, usually weighing about 70 lbs, that is used as the stock for an extrusion press to make wire for the production of lead bullets Blast furnace A large vertical furnace used to reduce lead ores to molten lead in which hot coke reduces the sinter roast through the formation of CO2; the necessary heat is produced by the reaction of the coke with air forced into the furnace from below Bullet The lead-based projectile in small-arms ammunition Bullet caliber The diameter of the bullet, which may be expressed either as a fraction of an inch, e.g., .22 caliber means 0.22 inch diameter, or in millimeters CABL Compositional Analysis of Bullet Lead Cartridge A term used to refer either to the completely assembled ammunition or to the brass case that holds the primer and powder and is pressed onto the bullet 130
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From page 131...
... FBI Federal Bureau of Investigation FED Federal, bullet manufacturer Hog A one ton casting of lead ICP-MS Inductively Coupled Plasma-Mass Spectrometry ICP-OES Inductively Coupled Plasma-Optical Emission Spectroscopy Ingot A 65-125 lb casting of lead; more generally, a casting that has solidified after having been poured from a vessel in the form of molten metal Jacket A metal external shell, often copper, surrounding the lead core of a bullet, frequently used for high velocity ammunition LA Laser Ablation M C - I C P - M S M u 1 t i - C o 1 1 e c t o r - I n d u c t i v e 1 y C o u p 1 e d P 1 a s m a - M a s s Spectrometry Melt A quantity of molten lead Mold The container into which molten metal is poured to allow it to solidify NAA Neutron Activation Analysis Pb Lead, a metallic element used to form bullets PCA Principal Components Analysis Pig A 65-125 lb. casting of lead Pot A vessel within which lead is melted Pour The action of transferring a molten metal from a vessel into an ingot mold, in which it will solidify Primary lead A facility that transforms lead-bearing ore, normally a smelter sulfide, into nearly pure lead by the steps of sintering, reduction, and refining PS Probable Suspect (bullet)
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From page 132...
... TIMS Thermal Ionization Mass Spectrometry WDXRF Wavelength Dispersive X-Ray Fluorescence WIN Winchester, bullet manufacturer Wire A long piece of lead of the correct diameter used to produce a desired caliber bullet, formed by extrusion Statistical Terminology Ka ta c, critical value critical value within-bullet standard deviation
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Key Terms

  • metallic element
  • molten lead
  • bullet manufacturer
  • mass spectrometry
  • molten metal

  • ionization mass
  • external shell
  • thermal ionization
  • inductively coupled
  • ingot mold

  • metal external
  • involves rotary
  • metal sometimes
  • hardening lead
  • desired caliber

  • rotating dies
  • caliber bullet
  • form bullets
  • source mass
  • spark source

  • rotary forging
  • correct diameter
  • primary lead
  • critical value
  • standard deviation

  • pure lead
  • finished bullet
  • suspect bullet
  • nearly pure
  • extrusion statistical


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