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Re: Sulfidation Experiment on I-Beam doesn't support NIST

Metamars: Just two more points: 1. It is interesting to note that the surface analytical data presented by S. W. Banovic in NIST NCSTAR 1-3C show that for the single column sample K-16, chlorine was the most abundant species (after iron of course!), and was generally HIGHER than the much debated sul...
by Dr. G
on Fri Jul 16, 2010 8:46 pm
 
Forum: WTC7
Topic: Sulfidation Experiment on I-Beam doesn't support NIST
Replies: 57
Views: 5599

Re: Sulfidation Experiment on I-Beam doesn't support NIST

Metamars: As a follow-up to my last post, here is some supporting information on PVC and HCl/Cl2 in fires: Thermal Degradation of PVC and the Fate of HCl Emissions The thermal degradation of pure PVC and PVC blended with plasticizer and other additives has been extensively studied for a wide range o...
by Dr. G
on Fri Jul 16, 2010 8:35 pm
 
Forum: WTC7
Topic: Sulfidation Experiment on I-Beam doesn't support NIST
Replies: 57
Views: 5599

Re: Sulfidation Experiment on I-Beam doesn't support NIST

Hi Metamars, I'm out of town most of the time of late so I have not been doing much 911 research these days. However, I did have a look at the video. I must say that I'm very impressed with Mr. Cole's experiment - nice job! It certainly looks convincing with regard to how the experiment was carried ...
by Dr. G
on Fri Jul 16, 2010 7:43 pm
 
Forum: WTC7
Topic: Sulfidation Experiment on I-Beam doesn't support NIST
Replies: 57
Views: 5599

Re: Solid mechanics simulacra, of the toy variety

OWE:

Nice work! Sorry for my prompt departure from this forum. Working around the clock on a problem at a nuclear plant. Hope to be back by October ......
by Dr. G
on Sat Jul 03, 2010 12:59 am
 
Forum: Other technical issues
Topic: Solid mechanics simulacra, of the toy variety
Replies: 109
Views: 8312

Re: Appeal of Moderator Action

OWE: I'm not too sure what's going on here, but I'll bet tfk has something to do with it! While the911forum is far from perfect, I'll take this site over JREF any day. JREF is a very NASTY site that is BASED on biased moderation! PHYSFORUM has gone down the tubes too since RPenner took over .... Any...
by Dr. G
on Sat Feb 06, 2010 9:21 pm
 
Forum: Other Issues
Topic: Appeal of Moderator Action
Replies: 54
Views: 394

Re: tfk debunking Chandlers fall speed

tfk: Now Tom you really didn't answer my question did you! But I must ask you why are you so concerned about my identity when you conceal yours? I personally don't care who you are, but I would say you remind me of a poster called "Grumpy" ...... Anyway, let's go over my main point one mor...
by Dr. G
on Sat Feb 06, 2010 6:38 pm
 
Forum: WTC7
Topic: tfk debunking Chandlers fall speed
Replies: 24
Views: 3122

Re: tfk debunking Chandlers fall speed

It has always boggled my mind that NIST apologists accept without question the notion that the INSIDE of WTC 7 failed BEFORE the exterior wall(s). How is this possible? Are the floors of modern highrise buildings not well attached to the walls? How do floors break away from exterior walls WITHOUT le...
by Dr. G
on Fri Feb 05, 2010 8:10 pm
 
Forum: WTC7
Topic: tfk debunking Chandlers fall speed
Replies: 24
Views: 3122

Re: Henry-Couannier vs. Greening concrete pulverization calcs

Henryco:

I used to have access to a Cameca ion-microprobe magnetic sector instrument, (made in France, no less!), but alas no more for me too.....
by Dr. G
on Wed Feb 03, 2010 2:39 am
 
Forum: WTC1 and WTC2 - Collapse Progression
Topic: Henry-Couannier vs. Greening concrete pulverization calcs
Replies: 102
Views: 7233

Re: Henry-Couannier vs. Greening concrete pulverization calcs

henryco: Strontium and barium are normal, well-documented impurities in commercial gypsum wallboard. I have data on this somewhere .... Your isotopic data are actually very close to natural abundance as far as I can see, except for Ba-138, which looks like a typo and should be ~ 71 %, not 7 %, to ad...
by Dr. G
on Tue Feb 02, 2010 2:20 am
 
Forum: WTC1 and WTC2 - Collapse Progression
Topic: Henry-Couannier vs. Greening concrete pulverization calcs
Replies: 102
Views: 7233

Re: Henry-Couannier vs. Greening concrete pulverization calcs

henryco: I have used a quadrupole MS and a magnetic sector MS. You cannot reliably use a quadrupole MS for isotope ratios because of interferences between atomic ions of mass M and molecular ions of mass MH, MH2, MO, MO2, MOH, etc, etc. For example, an ion at mass 88 could be Sr-88, but it could als...
by Dr. G
on Mon Feb 01, 2010 8:30 pm
 
Forum: WTC1 and WTC2 - Collapse Progression
Topic: Henry-Couannier vs. Greening concrete pulverization calcs
Replies: 102
Views: 7233

Re: Henry-Couannier vs. Greening concrete pulverization calcs

henryco: Isotopic anomalies without radioactive fragments makes very little sense. Isotopic anomalies only for the elements strontium and barium makes no sense at all! Were you using a quadrupole mass spectrometer? If not, I doubt that you would have the mass resolution to discriminate between atomi...
by Dr. G
on Mon Feb 01, 2010 6:17 pm
 
Forum: WTC1 and WTC2 - Collapse Progression
Topic: Henry-Couannier vs. Greening concrete pulverization calcs
Replies: 102
Views: 7233

Re: Henry-Couannier vs. Greening concrete pulverization calcs

OWE: Thanks! The world is rough, and if a man's gonna make it he's gotta be tough .... or is that TUFF which is a rock formed by consolidation of volcanic ashes! And by the way, particle agglomeration may be an issue for my calculations, but it only makes LARGER particles ... A lot of very fine dust...
by Dr. G
on Mon Feb 01, 2010 1:32 am
 
Forum: WTC1 and WTC2 - Collapse Progression
Topic: Henry-Couannier vs. Greening concrete pulverization calcs
Replies: 102
Views: 7233

Re: Henry-Couannier vs. Greening concrete pulverization calcs

blue74: The most detailed analyses of WTC dust samples appears to be those reported by three research groups: P. J. Lioy et al. in Vol. 110, page 703, of Environmental Health Perspectives, J. K. McGee et al. in Vol. 111, page 972, of Environmental Health Perspectives, and by G. P. Meeker in the USGS...
by Dr. G
on Sun Jan 31, 2010 4:47 pm
 
Forum: WTC1 and WTC2 - Collapse Progression
Topic: Henry-Couannier vs. Greening concrete pulverization calcs
Replies: 102
Views: 7233

Re: Henry-Couannier vs. Greening concrete pulverization calcs

blue74: 82 % of the concrete dust was NOT smaller than 20 microns! You have to be very careful in how you look at the available data on this. Meeker collected WTC dust samples "from horizontal surfaces that appeared to be undisturbed. .... All samples were scooped into double zip-lock bags.&quo...
by Dr. G
on Sat Jan 30, 2010 5:01 pm
 
Forum: WTC1 and WTC2 - Collapse Progression
Topic: Henry-Couannier vs. Greening concrete pulverization calcs
Replies: 102
Views: 7233

Re: Henry-Couannier vs. Greening concrete pulverization calcs

Henryco: At last even if the Energy lost E computed by Dr G was correct, it would be very incorrect to apply all this energy to the mass of the concrete only This is simply not true and here's why: The steel frame structure of each Twin Tower was supported at the 95th floor by core columns with a ho...
by Dr. G
on Sat Jan 23, 2010 2:41 am
 
Forum: WTC1 and WTC2 - Collapse Progression
Topic: Henry-Couannier vs. Greening concrete pulverization calcs
Replies: 102
Views: 7233
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