JFK Assassination Plus General Discussion & Debate > JFK Assassination Plus General Discussion And Debate
Three Tests Proved Oswald's Innocence
Mike Orr:
Test 1: Spectrographic Analysis
Oswald's paraffin casts were subjected to two analyses. Spectrographic analysis , the method normally used by the police, showed evidence of barium and antimony on Oswald's hands , but not on his cheek .
Test 2: Neutron Activation Analysis on Oswald
Spectrographic analysis was considered sufficiently reliable for criminal investigations, but in this case a more incisive test was also used. Neutron activation analysis, which is capable of identifying the presence of substances in quantities much to small to be captured by spectrographic analysis, also showed no incriminating quantities of residues on Oswald's cheek. The result was reported in an internal Warren Commission memo: " At best, the analysis shows that Oswald may have fired a pistol, although this is by no means certain. ... There is no basis for concluding that he also fired a rifle."
Test 3: Controlled Neutron Activation Analysis
In order to check the validity of the neutron activation analysis of Oswald's paraffin casts, a controlled test was made. Seven marksmen fired a rifle of the same type as that found on the sixth floor. The standard paraffin test was administered, and the paraffin casts were subjected to neutron activation analysis. All seven subjects showed substantial amounts of barium and antimony on their hands and more impotantly , on their cheeks.
The absence of significant quantities of residues on Oswald's cheek meant that he almost certainly had not fired a rifle that day.
Ross Lidell:
--- Quote from: Mike Orr on April 30, 2018, 02:14:40 AM --- Test 1: Spectrographic Analysis
Oswald's paraffin casts were subjected to two analyses. Spectrographic analysis , the method normally used by the police, showed evidence of barium and antimony on Oswald's hands , but not on his cheek .
Test 2: Neutron Activation Analysis on Oswald
Spectrographic analysis was considered sufficiently reliable for criminal investigations, but in this case a more incisive test was also used. Neutron activation analysis, which is capable of identifying the presence of substances in quantities much to small to be captured by spectrographic analysis, also showed no incriminating quantities of residues on Oswald's cheek. The result was reported in an internal Warren Commission memo: " At best, the analysis shows that Oswald may have fired a pistol, although this is by no means certain. ... There is no basis for concluding that he also fired a rifle."
Test 3: Controlled Neutron Activation Analysis
In order to check the validity of the neutron activation analysis of Oswald's paraffin casts, a controlled test was made. Seven marksmen fired a rifle of the same type as that found on the sixth floor. The standard paraffin test was administered, and the paraffin casts were subjected to neutron activation analysis. All seven subjects showed substantial amounts of barium and antimony on their hands and more impotantly , on their cheeks.
The absence of significant quantities of residues on Oswald's cheek meant that he almost certainly had not fired a rifle that day.
--- End quote ---
In 1963: The Paraffin test was known to be essentially worthless. It was prone to false positives and false negatives. It was used to trick naive suspects into giving a confession.
However, you seem to believe in the effectiveness of the paraffin test. Does that mean that you accept that Lee Harvey Oswald fired "a gun" on Friday 22 November 1963? You know... the Smith & Wesson revolver with which he shot Office JD Tippit. The discarded bullet hulls from the gun being found near the crime scene were matched to the weapon to the exclusion of all others.
If not: How do you think Oswald got "nitrates" on his hands on Friday 22 November 1963?
John Iacoletti:
--- Quote from: Mike Orr on April 30, 2018, 02:14:40 AM --- The absence of significant quantities of residues on Oswald's cheek meant that he almost certainly had not fired a rifle that day.
--- End quote ---
The lame LN excuse for this is that he scrubbed his face when he was at the rooming house.
Matt Grantham:
--- Quote from: John Iacoletti on April 30, 2018, 08:59:19 PM ---The lame LN excuse for this is that he scrubbed his face when he was at the rooming house.
--- End quote ---
But not his hands apparently
Matt Grantham:
Yes
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