Debunked
http://www.washingtonpost.com/wp-dyn/content/article/2007/05/16/AR2007051601967.html
Inconclusive
Debunked
http://jfkfacts.org/new-fbi-study-hair-analysis-warren-commission/
Here is the opening paragraph of Tobin's paper. In it near the bottom is the quote about the 2nd assassin. Hard to say what was the ultimate goal of this research. Maybe just to show the rest of us how smart they really are. A second shooter armed with a carcano.....very smart. The premise and conclusion are basically not worth repeating.
CHEMICAL AND FORENSIC ANALYSIS OF JFK ASSASSINATION
BULLET LOTS: IS A SECOND SHOOTER POSSIBLE?
BY CLIFF SPIEGELMAN, WILLIAM A. TOBIN, WILLIAM D. JAMES,
SIMON J. SHEATHER, STUART WEXLER AND D. MAX ROUNDHILL
Texas A&M University, Forensic Engineering International,
Texas A&M University, Texas A&M University,
Hightstown High School and Chem Consulting
The assassination of President John Fitzgerald Kennedy (JFK) traumatized
the nation. In this paper we show that evidence used to rule out a second
assassin is fundamentally flawed. This paper discusses new compositional
analyses of bullets reportedly to have been derived from the same batch
as those used in the assassination. The new analyses show that the bullet
fragments involved in the assassination are not nearly as rare as previously
reported. In particular, the new test results are compared to key bullet composition
testimony presented before the House Select Committee on Assassinations
(HSCA). Matches of bullets within the same box of bullets are shown
to be much more likely than indicated in the House Select Committee on Assassinations?
testimony. Additionally, we show that one of the ten test bullets
is considered a match to one or more assassination fragments. This finding
means that the bullet fragments from the assassination that match could have
come from three or more separate bullets. Finally, this paper presents a case
for reanalyzing the assassination bullet fragments and conducting the necessary
supporting scientific studies. These analyses will shed light on whether
the five bullet fragments constitute three or more separate bullets. If the assassination
fragments are derived from three or more separate bullets, then
a second assassin is likely, as the additional bullet would not easily be attributable
to the main suspect, Mr. Oswald, under widely accepted shooting
scenarios [see Posner (1993), Case Closed, Bantam, New York].
Obviously, Tobin and the rest of the forensic dream team never understood its ramifications. In their zest and zeal to prove Guinn wrong and the existence of a conspiracy, these scientists fail to understand what their analysis of the results of their tests indicated. Essentially, all the tests were performed on 6.5mm Carcano bullets from the same batches as LHO's and from these tests determined that there was a possibility the bullet fragments recovered in the JFK assassination came from more than two bullets. Thus somehow proving to themselves that there was more than one shooter in Dealey Plaza. Apparently they don't realize what they are really saying is that there wasn't just one shooter in Dealey Plaza armed with a 6.5mm Carcano but two shooters both armed with 6.5mm Carcanos. Most people don't even want to believe there was one person there with a Carcano let alone two.
One additional brilliant finding from the paper: Way to go out on limb.
"Dr. Guinn may have been correct or incorrect about the number of bullets originating
from the JFK fragments; the state of knowledge even today, but definitely about 30 years ago, remains too uncertain".