Saw mark analysis on bone: Kerf measurements on Human versus Nonhuman

Wright, Hallie (2016) Saw mark analysis on bone: Kerf measurements on Human versus Nonhuman. [Abstract]

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Dismemberment of human remains usually catches the attention of the media and the public. Marks left on the bones can provide clues about the methods and tools used that contribute to an understanding of the circumstances surrounding a death. The purpose of my study is to validate the use of minimum kerf width to identify saw type used on nonhuman bones, and show that it is similar to those marks made on human bone. Using nonhuman bones and three different types of saws several cuts were made and then measured. The results of this study, when compared to the other two studies (Symes 1992, Love 2010) show that mine match the Love’s study to the thousands decimal place. Symes’ study is rounded to the hundredth place. The range between all the studies is from 0.04 inches to 0.032 inches. The differences between both Love’s (2010) study and mine when compared to Symes’ (1992) study are shown in the standard deviation. My study was one thousandth smaller than Love’s study for the Hacksaws results, and one thousandth higher when measuring the width of the electric saw. The results that I got differed from Symes’ results for the hacksaw with 18 teeth per inch, and the electric saw, possibly because he rounded to the hundredth place and, in accordance with Love’s study (2010) I rounded to the thousandth. The number of cuts used in the test could also contribute to the differences in the results. Using a box and whiskers plot the end results for the minimum kerf width of each test are displayed separately, demonstrating the similarities and differences. These results support previous studies that demonstrate minimum kerf width can be used to distinguish between hacksaws and reciprocating saws. In addition they show that cow bone can be used as a proxy for human bone in experimental studies of this type.

Item Type: Abstract
Created by Student or Faculty: Student
Subjects: Undergrad Research Symposium > Anthropology
Undergrad Research Symposium
Depositing User: Kim Hannula
Date Deposited: 13 Apr 2016 08:39
Last Modified: 13 Apr 2016 11:47

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