By Michael G. Haag, Lucien C. Haag
Forensic scientists, legislation enforcement, and crime scene investigators are frequently tasked with reconstruction of occasions in response to crime scene proof, and the following research of that facts. The use and misuse of firearms to perpetrate crimes from robbery to homicide necessitates a number of invites to reconstruct capturing incidents. the release of firearms and the habit of projectiles create many different types of actual facts that, via right checking out and interpretation by way of a talented forensic scientist, can identify what did and what didn't ensue. This publication is generated from the authors quite a few years of carrying out classes and seminars near to taking pictures incident reconstruction. It seeks to entirely tackle concerns from easy to advanced in offering the reader an evidence of the standards surrounding ballistics, trajectory, and capturing scenes. the last word pursuits of this particular publication are to aid investigators, crime scene analysts, pathologists, ballistics specialists, and legal professionals to appreciate the terminology, technology, and components taken with reconstructing capturing incident occasions to resolve forensic situations. The publication will hide the whole diversity of comparable issues together with the diversity from which a firearm used to be discharged, the series of pictures in a a number of discharge capturing incident, the placement of a firearm for the time being of discharge, the placement of a sufferer for the time being of influence, the possible flight direction of a projectile, the way through which a firearm was once discharged and masses extra. - Written by means of essentially the most well-respected capturing scene and ballistics specialists on the earth - comprises over a hundred diagrams and pictures, many in full-color, that help and illustrate key innovations - Case reports illustrate real-world software of technical innovations
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Extra resources for Shooting Incident Reconstruction
C. Haag, “Shotgun Evidence,” AFTE Journal 10:3 ( July 1978). Sphere Diameter in Inches from Weight in Grains for Three Metals 29 This Page is Intentionally Left Blank CHAPTER 3 IS IT A BULLET HOLE? THE QUESTION OF BULLET HOLES IN COMMON M AT E R I A L S Is a particular mark on, or a hole in, an object caused by a bullet? This can be a relatively common question to crime scene technicians and the forensic laboratory. The answer is easy when a tracking through the hole leads to a projectile. It may not be so easy when one is presented with a defect in some object and no bullet is clearly associated with it.
With a properly selected patch and powder charge, the ball never directly contacted the bore of the gun during loading or discharge. At best only faint vestiges of the rifling might print through the patch and on to the ball. The weave of the fabric selected for the patch may be seen embossed on the side or base of the fired ball. The patch itself survives the discharge process and represents important physical evidence. At very close range (a few inches) it will follow the projectile into a wound track.
2d 469 (1993). Kumho Tire v. S. 137 (1999). S. , NY, 1962. , Toolmarks, Firearms and the Striagraph, Charles C. Thomas, Springfield, IL, 1958. E. C. , NY, 1983. H. J. Saks and J. Sanders, Modern Scientific Evidence, Vol. , St. Paul, MN, 1997. , Harrisburg, PA, 1966. , Prescott, AZ, 1985. J. Jury and J. , Harrisburg, PA, 1957. , The Gun in the Case, Whitcombe & Tombs, Ltd, New Zealand, 1963. , “The Ontogeny of Criminalistics,” Journal of Criminal Law, Criminology and Police Science, Vol. 54, 1963, pp.