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New article on Neutron Activation Analysis
#1
http://www.forensicmag.com/articles/2016...ion-report

New Forensic Analysis Shoots Holes in the JFK Assassination Report

Tue, 01/26/2016 - 11:30am

Sean Allocca, Editor

[Image: bulletFB.jpg]Warren Commission exhibit CE399--the "single" or "magic" bullet. Photo from the National Archives and Records Administration. ARC: 305144. This image is in the public domain according to terms of Title 17, Chapter 1, Section 105 of the US Code. (Via Wikipedia)In 1979, FBI expert Dr. Vincent P. Guinn analyzed five bullet fragments found after the JFK assassination to determine if the fragments came from more than two bullets. If so, the single-bullet theory would prove unlikely, and the presence of a second shooter that November day in Dealey Plaza would be hard to deny.Guinn testified before the Committee on Assassination in March of 1979: "there is no evidence for three bullets, four bullets, or anything more than two, but there is clear evidence that there are two."
After further studies, however, researchers are now saying that Guinn's analysis was "fundamentally flawed" in a new video by American Scientistreleased this week.
Using the same technique, researchers analyzed similar bullets, in an attempt, to see how chemically different the bullets might be from one another. The research was then used to determine how definitively chemical analysis could be used to rule out other possible bullets and shooters.
According to the study, one of the 30 bullets analyzed by a team from Texas A&M University, matched an assassination bullet, chemically, meaning the findings in 1979 report were much less specific then experts believed, and testified to, at the time.
Clifford Spiegelman of Texas A&M University was one of the lead authors of the study. "So according to Dr. Guinn's testimony that the bullets used in the murder were chemically unique," Spiegelman told American Scientist, "we must have been involved in the Kennedy assassination since we have fragments that match."
Watch the interview with Dr. Clifford Spiegelman:

His team used the same technique that experts for the FBI back in the '70s, like Dr. Guinn, usedneutron activation analysis. This process is used to determine the elements found within a material, such as lead from the bullet fragments. Using radioactive decay, researchers can analyze the spectra of the radioactive emissions, which are well-known to science, then determine the exact concentration of elements found within the material, according to Wikipedia.
"The bullet components of the JFK assassination study were seriously messed up," Spiegelman said in a recent Youtube interview. "It was not understood that the investigation should have been multi-disciplinary and not just chemical."
If Spiegelman is right, there is no way to rule out a second shooter, on chemical analysis alone. Therefore, the 1979 report is fundamentally flawed.
Four chemicals were analyzed in the assassination report: antimony, copper, arsenic and silver. FBI experts testified that if a bullet had the same chemical composition as another bullet, both bullets would logically have come from the same source, and likely the "same box" of ammunition--a liklihood that most experts today believe is completely overstated.
According to the 1979 Committee on Assassinations investigation, the chemical analysis of the bullet fragments found after the assassination proved there could only have been two bulletslikely meaning Oswald was the one and only shooter. "The neutron activation analysis further supported the single bullet theory by indicating that there was evidence of only two bullets … analysis showed no evidence of a third bullet among those fragments large enough to be tested," according to the authors of the report.
Spiegelman maintains he is not purporting the existence of a second shooter, only that the testimony used to come to the conclusion that the bullet fragments came from only two bulletsmeaning that there could not have been a second shooteris scientifically unsound.




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#2
The FBI already (2 years ago?) admitted that the NAA forensic technique is invalid. Also, I note that the 1979 Committee declined to test some of the small fragments, although the amount of material required for NAA is miniscule.
"All that is necessary for tyranny to succeed is for good men to do nothing." (unknown)

James Tracy: "There is sometimes an undue amount of paranoia among some conspiracy researchers that can contribute to flawed observations and analysis."

Gary Cornwell (Dept. Chief Counsel HSCA): "A fact merely marks the point at which we have agreed to let investigation cease."

Alan Ford: "Just because you believe it, that doesn't make it so."
Reply
#3
All you need to know is the Connally's refused to allow the fragments still in him to be removed and tested.
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