WC-FBI Suppressed NAA Evidence that Oswald Did NOT Fire a Rifle on 11/22/63

[Tom Graves]

[...]

You sound like a Russian troll, Griffith.

Are you a Russian troll?

[Michael T. Griffith]

You sound like a Russian troll, Griffith. Are you a Russian troll?

Oh, really?! I wasn't aware that the Russians had said anything about the released Oak Ridge files that prove that NAA testing of Oswald's right-cheek paraffin cast found no indications he had fired a rifle on 11/22, and that the NAA testing was confirmed by several control tests to be 100% accurate in detecting nitrates in paraffin casts of men who had fired rifles. I had no idea the Russians had taken a position on this!

Just curious: Do you believe the FBI spent millions of dollars and 10 years fighting against releasing the Oak Ridge files because the Russians told them not to release them? 

Aren't you worried that constantly trolling people with accusations of being "a Russian troll," "a pawn of Putin," "spreading KGB disinformation," etc., makes you look unserious and questionable? This is not to mention your oft-repeated howler that the Russians won the Cold War.

[Benjamin Cole]

And check this out: Negative GSR results even after NAA are common:

Abstract

The results of gunshot residue (GSR) tests in 112 suicide cases investigated by the U.S. Army Criminal Investigation Command over a ten-year period are described. Only suicide cases in which there was certainty that the victim fired a weapon were examined in an effort to reduce ambiguous results. Previous case work research by Rudzitis indicated that positive GSR test results were encountered in suicides 62% of the time using various combinations of neutron activation analysis (NAA) and atomic absorption spectrophotometry (AAS). Threshold values of 0.2-micrograms antimony and 0.3-micrograms barium (0.2-micrograms antimony and 0.5-micrograms barium after 1985) used by the U.S. Army Criminal Investigation Laboratory resulted in positive GSR results in suicide cases 38% of the time. The effects of time, location of body, handling of the body, weapon type, caliber, and condition of the hands on GSR results are examined. Case studies involving suicides by unit armorers are discussed.

https://pubmed.ncbi.nlm.nih.gov/2313262/

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So, the NAA tests are not 100% accurate. Even people who committed suicide by gun, who obviously should have some GSR on them, often do not according to NAA and even better AAS testing.

I contend LHO is a strong suspect for having fired the M-C on 11/22, from the TSBD6 window. The NAA paraffin tests are inconclusive, and the chain of evidence fishy anyway.

[Michael T. Griffith]

And check this out: Negative GSR results even after NAA are common:

Abstract

The results of gunshot residue (GSR) tests in 112 suicide cases investigated by the U.S. Army Criminal Investigation Command over a ten-year period are described. Only suicide cases in which there was certainty that the victim fired a weapon were examined in an effort to reduce ambiguous results. Previous case work research by Rudzitis indicated that positive GSR test results were encountered in suicides 62% of the time using various combinations of neutron activation analysis (NAA) and atomic absorption spectrophotometry (AAS). Threshold values of 0.2-micrograms antimony and 0.3-micrograms barium (0.2-micrograms antimony and 0.5-micrograms barium after 1985) used by the U.S. Army Criminal Investigation Laboratory resulted in positive GSR results in suicide cases 38% of the time. The effects of time, location of body, handling of the body, weapon type, caliber, and condition of the hands on GSR results are examined. Case studies involving suicides by unit armorers are discussed.

https://pubmed.ncbi.nlm.nih.gov/2313262/

---30---

So, the NAA tests are not 100% accurate.

Ben, you're comparing apples to oranges. Th NIH extract you're citing is talking about GSR tests done on the bodies, usually the hands, of suicide victims. The victims had been dead for hours or longer. It's not talking about paraffin casts made on live persons with live skin.

Again, the Oak Ridge control tests found that NAA was 100% reliable in detecting nitrates in the paraffin casts of all the men who fired the Carcano rifle.

[Benjamin Cole]

MTG--

And the paraffin cast wasn't taken on LHO's cheek until eight hours after the JFKA...and then that paraffin cast was taken home by a DPD officer as a souvenir. Is it even the right cast that was sent to Oak Ridge? The chain of evidence-custody...dubious at best.

Was NAA testing in its infancy in 1963? Technicians not sure of procedures, and the equipment novel?

Why would later, better-quality NAA and atomic absorption spectrophotometry tests not find GSR on gunshot suicide victims the majority of the time?

Indeed, even atomic absorption spectrophotometry does not find GSR all the time.

NAA and AAS...not infallible. Not quite 20th century witchcraft...but not something to hang your hat on either.