Did Lee Oswald shoot Major-General Edwin Walker
Wed 19 Jun 2019, 12:31 am
This is what 'really' happened....as Roe thinks so. It must be true right?
Now upon checking a few months later the video has been removed.....not that that will stop me posting evidence to the contrary.
Now upon checking a few months later the video has been removed.....not that that will stop me posting evidence to the contrary.
Re: Did Lee Oswald shoot Major-General Edwin Walker
Sat 06 Feb 2021, 12:48 am
- Colin_Crow
- Posts : 322
Join date : 2013-08-03
Re: Did Lee Oswald shoot Major-General Edwin Walker
Tue 09 Feb 2021, 12:24 pm
I did an analysis of the NAA metallic composition reported to the HSCA by Guinn. He reported his results in two tables. One included CE 399 and the recovered fragments from the assassination. The second table included just the unfired round from the chamber of CE139 and the Walker bullet. When looking at the antimony and silver concentrations of the latter two they are almost identical and represent nothing like those found associated with the JFK shooting. Again I seem to have lost the graphic I had on this but the Walker shooting bullet had higher much silver concentrations than antimony, this is in complete contrast to the assassination results and likely explains why he presented them in different tables.
It seems to me that the rifle chamber bullet and the Walker bullet were possibly from the same batch and the rest from and entirely different production. In addition the silver to antimony ratios of those bullets were entirely different to any of the four Western Winchester lots tested by anyone. I will try and find the analysis and post.
It seems to me that the rifle chamber bullet and the Walker bullet were possibly from the same batch and the rest from and entirely different production. In addition the silver to antimony ratios of those bullets were entirely different to any of the four Western Winchester lots tested by anyone. I will try and find the analysis and post.
Re: Did Lee Oswald shoot Major-General Edwin Walker
Tue 09 Feb 2021, 12:45 pm
Thanks Colin!
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- Colin_Crow
- Posts : 322
Join date : 2013-08-03
Re: Did Lee Oswald shoot Major-General Edwin Walker
Tue 09 Feb 2021, 5:50 pm
This work was done in 2014 and most was lost when Duncan's site crashed a few years back. I have managed to find my old excel spreadsheet on the laptop and so I have to rely on my memory and the raw figures.
Background on the bullet analysis
The FBI used relatively unsophisticated spectrographic analysis to check the lead composition of fragments of interest and CE399. The results were not always quantifiable and some elements were assigned subjective results. There raw results were obtained by Weisberg under FOI and interestingly they were not inconsistent with some of the stuff I found.
NAA was just a new science at this time and Guinn was brought in at an early stage to assist. This involvement was kept quiet and not revealed until many years later. He would become the NAA guru for the HSCA.
The relevant results
Guinn published his finding of the fragments and CE399 in one table. He published results for the Walker bullet and the unfired round in a separate table. This mystified me. If all these bullets were supposedly tied to Oswald and to WCC manufacture from any of lots 600-6003 they should all cluster together.
I looked particularly at two metals, antimony Sb and silver Ag. Antimony can be used to harden lead bullets and is often sourced from old batteries. However from memory it was in short supply during the war and might not have been used for this purpose then. This could lead to decrease levels in the bullet lead. Silver was remarkably consistent in all the bullets tested by either Guinn or others who looked at the compositions by NAA. The ranges and statistical variations appear below in ppm.
Bullet. Sn. Ag
CE399 833 7.9
Mean 630 7.9
Mean 384 8.1
StD 445 2.6
RelStD 115 32
Walker 17 20.6
Unfired 15 22.4
The graphic below represents the difference well with all WCC bullies tested. On the y axis is the silver concentration in ppm. The x axis shows a circle for each bullet tested. The lots where known appear and start with 6000 and go to 6003. Designated by red vertical lines. The Guinn tested bullets are represented with a whit border and the head fragment and CE399 bullets indicated. The most important part of the graphic is by the diameter of the circle for each bullet. This is reflective of the silver content relative to the silver/antimony ratio.
This indicates to me that those two bullets came from the same source. Were not of WCC manufacture from lots 6000-6003. I believe Guinn knew this and that is why he "fudged" his report by putting the results in separate tables. Ultimately that provided the clue.
So what to make of this?
Background on the bullet analysis
The FBI used relatively unsophisticated spectrographic analysis to check the lead composition of fragments of interest and CE399. The results were not always quantifiable and some elements were assigned subjective results. There raw results were obtained by Weisberg under FOI and interestingly they were not inconsistent with some of the stuff I found.
NAA was just a new science at this time and Guinn was brought in at an early stage to assist. This involvement was kept quiet and not revealed until many years later. He would become the NAA guru for the HSCA.
The relevant results
Guinn published his finding of the fragments and CE399 in one table. He published results for the Walker bullet and the unfired round in a separate table. This mystified me. If all these bullets were supposedly tied to Oswald and to WCC manufacture from any of lots 600-6003 they should all cluster together.
I looked particularly at two metals, antimony Sb and silver Ag. Antimony can be used to harden lead bullets and is often sourced from old batteries. However from memory it was in short supply during the war and might not have been used for this purpose then. This could lead to decrease levels in the bullet lead. Silver was remarkably consistent in all the bullets tested by either Guinn or others who looked at the compositions by NAA. The ranges and statistical variations appear below in ppm.
Bullet. Sn. Ag
CE399 833 7.9
Mean 630 7.9
Mean 384 8.1
StD 445 2.6
RelStD 115 32
Walker 17 20.6
Unfired 15 22.4
The graphic below represents the difference well with all WCC bullies tested. On the y axis is the silver concentration in ppm. The x axis shows a circle for each bullet tested. The lots where known appear and start with 6000 and go to 6003. Designated by red vertical lines. The Guinn tested bullets are represented with a whit border and the head fragment and CE399 bullets indicated. The most important part of the graphic is by the diameter of the circle for each bullet. This is reflective of the silver content relative to the silver/antimony ratio.
This indicates to me that those two bullets came from the same source. Were not of WCC manufacture from lots 6000-6003. I believe Guinn knew this and that is why he "fudged" his report by putting the results in separate tables. Ultimately that provided the clue.
So what to make of this?
Re: Did Lee Oswald shoot Major-General Edwin Walker
Tue 09 Feb 2021, 8:24 pm
Good of you to join in Colin!
More Walker documentation. With thanks to Malcolm Blunt.
https://drive.google.com/file/d/1HJvu0pIXVMqXsxo6GRwBVZzyfrPkYSiU/view?usp=sharing
This set is predominately about the photo(s) of the Walker residence. The number plate erased and so on.
https://drive.google.com/file/d/1poQwsn9SCYlA8_CRsoEsLIHP00VNT_19/view?usp=sharing
ARRB - Walker Papers
https://drive.google.com/file/d/1TGqdnvmCmddb4v8FvudG9VyFnB2qyLsF/view?usp=sharing
Walker bullet
More Walker documentation. With thanks to Malcolm Blunt.
https://drive.google.com/file/d/1HJvu0pIXVMqXsxo6GRwBVZzyfrPkYSiU/view?usp=sharing
This set is predominately about the photo(s) of the Walker residence. The number plate erased and so on.
https://drive.google.com/file/d/1poQwsn9SCYlA8_CRsoEsLIHP00VNT_19/view?usp=sharing
ARRB - Walker Papers
https://drive.google.com/file/d/1TGqdnvmCmddb4v8FvudG9VyFnB2qyLsF/view?usp=sharing
Walker bullet
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Re: Did Lee Oswald shoot Major-General Edwin Walker
Tue 09 Feb 2021, 9:11 pm
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