Handbook of Forensic Services (pdf) - FBI

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ß ß ß ß ß Handbook of Forens c Serv ces 2007 Subm t the a r-dr ed cloth ng of the v ct m(s) and suspect(s). Package each tem separately n a paper bag. Search for part cles n the ha r, sk n, and wounds of the v ct m(s) and suspect(s). Subm t part cles n leakproof conta ners such as film canisters or plastic pill bottles. Do not use paper or glass conta ners. Search for part cles n veh cles by vacuum ng each sect on of the veh cle separately. Do not use tape for recover ng glass part cles. Subm t vacuum sweep ngs n leakproof conta ners. Do not use paper or glass conta ners. Sh p known and quest oned debr s separately to avo d contam nat on. Do not process ev dence for latent pr nts. Fracture ß Label the s des of the glass n the frame (“INSIDE” and “OUTSIDE”). Label the glass where t was removed n the frame (“TOP,” “BOTTOM,” “LEFT,” and “RIGHT”). ß Subm t all glass p eces so that the p eces can be fit together to identify the radial cracks near and at the po nt(s) of mpact and to ncrease the probab l ty of match ng edges. Pack all 70
ß Handbook of Forens c Serv ces 2007 glass separately and securely to avo d sh ft ng and break ng dur ng sh pp ng. Subm t the ent re p ece of lam nated glass, f poss ble. Secure the glass between sheets of plywood or sturdy cardboard. Do not place any objects nto the mpact area. Do not process ev dence for latent pr nts. Back to the top Hair and Fiber Examinations Hair Ha r exam nat ons can determ ne whether ha rs are an mal or human. Race, body area, method of removal, damage, and alterat on (e.g., bleach ng or dye ng) can be determ ned from human-ha r analys s. Exam nat ons can assoc ate a ha r to a person on the bas s of m croscop c character st cs n the ha r but cannot prov de absolute personal identification. Hairs that are associated will be subm tted for m tochondr al DNA analys s. Fibers Fiber examinations can identify the type of fiber, such as an mal (wool), vegetable (cotton), m neral (glass), and synthet c (manufactured). Quest oned fibers can be compared with fibers from the cloth ng, carpet ng, and other text les of v ct m(s) 71
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