Crime scene search and physical evidence handbook

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U.S. Dept. of Justice, Law Enforcement Assistance Administration, National Institute of Law Enforcement and Criminal Justice : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1973 - Law - 189 pages
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This book provides detailed guidelines for the criminal investigator on the protection and reporting of the crime scene and the collection and preservation of various types of evidence. The proper recognition, collection and preservation of physical evidence is a critical link in the process of prosecuting criminal acts. Those persons even marginally involved in criminal investigation should have a basic knowledge of the principles presented in this handbook. This work details procedures and techniques for investigating crime scenes and explains the characteristics and value of physical evidence. Basic types of this evidence are defined, acceptable methods of collection and preservation are described, and the results which can be expected from crime laboratory analysis are explained. Detailed procedures are given for recording the crime scene and for processing such evidence as fingerprints, body fluids, trace evidence, firearms, tool marks, illegal drugs, chemical materials, paint, and glass. The preparation of casts, collection of residual prints, examination of questioned documents, and identification of the known dead are treated. The appendices contain recommendations for the collection, marking, preserving, and packing of physical evidence and a directory of criminalistics laboratories throughout the country.

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Contents

Introductioni
1
Protection of the Crime Scene II
11
The Detailed Search of the Scene
18
CHAPTER VII
20
Detailed Procedures for Recording the Crime Scene
32
Tool Marks and Broken Metals _
99
Illegal Drugs and Drugs That are Subject to Abuse
110
Chemical Materials
124
Preparation of Casts and Collection of Residual Prints
134
Paint and Glass
150
Questioned Documents 55
155
Identification of the Unknown Dead 65
165
APPENDIX B National Directory of Criminalistics Laboratories
174
INDEX
187

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