LEADER 03969nam 2200673Ia 450 001 9910961998703321 005 20251117115558.0 010 $a9786610176748 010 $a9780309166430 010 $a0309166438 010 $a9781280176746 010 $a1280176741 010 $a9780309527569 010 $a0309527562 035 $a(CKB)111090425020450 035 $a(OCoLC)70738880 035 $a(CaPaEBR)ebrary10055617 035 $a(SSID)ssj0000156942 035 $a(PQKBManifestationID)12003272 035 $a(PQKBTitleCode)TC0000156942 035 $a(PQKBWorkID)10130251 035 $a(PQKB)10482908 035 $a(MiAaPQ)EBC3376404 035 $a(Au-PeEL)EBL3376404 035 $a(CaPaEBR)ebr10055617 035 $a(OCoLC)923263568 035 $a(Perlego)4734731 035 $a(BIP)10823176 035 $a(EXLCZ)99111090425020450 100 $a20040429d2004 uy 0 101 0 $aeng 135 $aurcn||||||||| 181 $ctxt 182 $cc 183 $acr 200 10$aForensic analysis $eweighing bullet lead evidence /$fCommittee on Scientific Assessment of Bullet Lead Elemental Composition Comparison, Board on Chemical Sciences and Technology, Division of Earth and Life Studies, National Research Council of the National Academies 205 $a1st ed. 210 $aWashington, D.C. $cNational Academies Press$d2004 215 $a1 online resource (226 p.) 300 $a"Support for this study was provided by the Federal Bureau of Investigation under Contract No. S2N0216700"--T.p. verso. 311 08$a9780309090797 311 08$a0309090792 320 $aIncludes bibliographical references. 327 $aFrontMatter -- Acknowledgment of Reviewers -- Preface -- Contents -- Executive Summary -- 1 Introduction -- 2 Compositional Analysis -- 3 Statistical Analysis of Bullet Lead Data -- 4 Interpretation -- 5 Major Findings and Recommendations -- APPENDIXES -- A Statement of Task -- B Committee Membership -- C Committee Meeting Agendas -- D Glossary -- E Basic Principles of Statistics -- F Simulating False Match Probabilities Based on Normal Theory -- G Data Analysis of Table 1, Randich et al. -- H Principal Components Analysis: How Many Elements Should Be Measured? -- I Birthday Problem Analogy -- J Understanding the Significance of the Results of Compositional Analysis of Bullet Lead -- K Statistical Analysis of Bullet Lead Data. 330 $aSince the 1960s, testimony by representatives of the Federal Bureau of Investigation in thousands of criminal cases has relied on evidence from Compositional Analysis of Bullet Lead (CABL), a forensic technique that compares the elemental composition of bullets found at a crime scene to the elemental composition of bullets found in a suspect (TM)s possession. Different from ballistics techniques that compare striations on the barrel of a gun to those on a recovered bullet, CABL is used when no gun is recovered or when bullets are too small or mangled to observe striations. Forensic Analysis: Weighing Bullet Lead Evidence assesses the scientific validity of CABL, finding that the FBI should use a different statistical analysis for the technique and that, given variations in bullet manufacturing processes, expert witnesses should make clear the very limited conclusions that CABL results can support. The report also recommends that the FBI take additional measures to ensure the validity of CABL results, which include improving documentation, publishing details, and improving on training and oversight. 606 $aBullets$xIdentification 606 $aLead$xAnalysis 606 $aChemistry, Forensic 615 0$aBullets$xIdentification. 615 0$aLead$xAnalysis. 615 0$aChemistry, Forensic. 676 $a363.2562 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910961998703321 996 $aForensic analysis$92615723 997 $aUNINA