Forensic Analysis Weighing Bullet Lead Evidence (2004) / Chapter Skim
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1. Introduction
1. Introduction
Pages 8-11
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From page 8... ...
of the elements found in lead alloy used to make bullets.1 These elements may be present in lead ore but not completely removed in smelting, present in recycled lead used for bullet manufacture, or, as in the case of antimony, added to bullet lead to control such properties as hardness. In bullet manufacture, the concentrations of the elements in the lead alloy are specified only within broad ranges or below a maximum concentration, so given volumes of lead have differing elemental compositions.
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From page 9... ...
Although the major bullet manufacturers distribute their products nationally and even internationally, some regional distributors might receive and distribute many bullets from the same compositionally indistinguishable source. That would increase the probability of finding a match between a crime-scene bullet and a bullet in the possession of an innocent person.
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From page 10... ...
What are the appropriate statements that can be made to assist the requester in interpreting the results of compositional bullet lead comparison, for both indistinguishable and distinguishable compositions? Can significance statements be modified to include effects of such factors as the analytical technique, manufacturing process, comparison criteria, specimen history, and legal requirements?
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From page 11... ...
The process of CABL culminates in its use as circumstantial evidence in court. The first half of Chapter 4 provides basic information about lead refining and bullet manufacturing to further an understanding of their significance in the interpretation of CABL data.
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