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Debate! What debate?

Yes but I've never seen the Zinc debate quantified very well. How much is too much? We know there were many sources of Zinc.
And why doesn't this raise flags with people doing the study. They don't seem to have a problem.

That would depend on an estimate of Zinc in the buildings, If you followed the Physorg discussion, then you would understand that Neu Fonze, has spoken to some of the reseachers personally.
Many researchers now are suffering from Cter phobia, they just do not want to talk to anyone after what the Cters have put them though.
 
My interest in this thread is to watch someone prove you are what I already called you and I will call you again..a sock of 28th Kindgdom.

~enigma~ If it is Dr. Greening then he will be able to answer my question to him, if not then he will not be able to answer, that simple.
 
That would depend on an estimate of Zinc in the buildings, If you followed the Physorg discussion, then you would understand that Neu Fonze, has spoken to some of the reseachers personally.
Many researchers now are suffering from Cter phobia, they just do not want to talk to anyone after what the Cters have put them though.

That would depend on an estimate of Zinc in the buildings, If you followed the Physorg discussion, then you would understand that Neu Fonze, has spoken to some of the reseachers personally.
Many researchers now are suffering from Cter phobia, they just do not want to talk to anyone after what the Cters have put them though.

I agree I've e-mailed quite a few. Bazant was not nice to me at first. Stephen D. Chastain of Metal Talk was very helpful. http://stephenchastain.com/metaltalk.htm Jonathan R. Barnett was helpful, but doesn't want to be quoted on any website. http://www.wpi.edu/Pubs/Faculty/jrb.html
Spak pulled some of his videos because of CT'ers. Some others I have had e-mails with are Dr. Pitts from NIST, Mark Ferran, Thomas Eagar, Barbara Lane from ARUP, James Williams, and Leslie Robertson.

I saw the discussion at Physorg but didn't see anything fruitfull. I saw Cahill mentioned, and I posted some of his thoughts. I'll have to talk to him when I get the chance.

http://www.newsreview.com/sacramento/Content?oid=oid:65238

Cahill arrived at Ground Zero weeks after the reports of molten metal at the scene, but his extensive research on why the rubble piles smoldered so long was of interest to controlled-demolition theorists, who believed molten steel in the bottom of the piles provided the heat source. Such was not the case, Cahill said. Instead, fuel oil from the WTC’s generators seeped into the ground, ignited and slowly consumed the debris stacked on top of it. As the piles were peeled open, oxygen stoked the underground fire, which burned for weeks.

BTW I'm sure we have spoken over e-mail also. I'm Scott who sometimes helps out at the debunking911 website.
 
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~enigma~ If it is Dr. Greening then he will be able to answer my question to him, if not then he will not be able to answer, that simple.
I really hope you don't expexc an answer...

If hell freezes over and you actually get a correct answer, then I must say he is now clinically insane because no sane individual who is really a scientist would use the language he did nor would he call me out and ask my qualifications. The man is obviously an idiot because if you read my posts I have not mentioned NIST in this thread but i did say he is a sock of 28th Kingdom. Considering he decided to post this at LCF about the same time (actually a few days) as the thread start here...well you guys do the math :)
 
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yes, an interesting note, the list Apollo20 gave of how JREFers typically respond, is a near duplicate of a list I seem to reacall was posted by Pdoh over at either CS blog or SLC Blog. PDoh has also been harping over and over again about our feelings on how "greening is trashing NIST".

It will be interesting to see if Apollo is able to answer the Strawberry question.

TAM:)
 
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I agree I've e-mailed quite a few. Bazant was not nice to me at first. Stephen D. Chastain of Metal Talk was very helpful. http://stephenchastain.com/metaltalk.htm Jonathan R. Barnett was helpful, but doesn't want to be quoted on any website. http://www.wpi.edu/Pubs/Faculty/jrb.html
Spak pulled some of his videos because of CT'ers. Some others I have had e-mails with are Dr. Pitts from NIST, Mark Ferran, Thomas Eagar, Barbara Lane from ARUP, James Williams, and Leslie Robertson.

I saw the discussion at Physorg but didn't see anything fruitfull. I saw Cahill mentioned, and I posted some of his thoughts. I'll have to talk to him when I get the chance.

http://www.newsreview.com/sacramento/Content?oid=oid:65238

Cahill arrived at Ground Zero weeks after the reports of molten metal at the scene, but his extensive research on why the rubble piles smoldered so long was of interest to controlled-demolition theorists, who believed molten steel in the bottom of the piles provided the heat source. Such was not the case, Cahill said. Instead, fuel oil from the WTC’s generators seeped into the ground, ignited and slowly consumed the debris stacked on top of it. As the piles were peeled open, oxygen stoked the underground fire, which burned for weeks.

BTW I'm sure we have spoken over e-mail also. I'm Scott who sometimes helps out at the debunking911 website.

Hi Scott, yes I believe we may have corrosponded by Email, I just realize that a lot of researchers now are turned off by the very thought that the Cters would want to contact them.
I tried to contact and expert in sono chemistry about aluminum, and all I got back was (go @#$% Yourself Cter), that was a shock comming from a respected Scientist even after I explained I was not a CTER, and what I wanted the information for.
 
yes, an interesting note, the list Apollo20 gave of how JREFers typically respond, is a near duplicate of a list I seem to reacall was posted by Pdoh over at either CS blog or SLC Blog. PDoh has also been harping over and over again about our feelings on how "greening is trashing NIST".

It will be interesting to see if Apollo is able to answer the Strawberry question.

TAM:)

Yes if it is Dr. Frank Greening he should know that answer, it was in the email I sent him, so it should be easy to look up. So now we wait to see who Apollo20 really is.
 
I was slow to catch on, but I believe that Dr. Greening is conducting a maieutic exercise, having wicked fun with us by playing the devil's advocate. He could defuse much of the hostility, if that were his intent, by reminding everyone that he has authored several important papers that undermine the fantasists' sand castle. In particular, he has exposed Jim Hoffman's sloppy calculations, refuting the bogus science of that charlatan, and he has pinned Steven Jones to the mat.

As someone who thinks highly of him, I wish Dr. Greening would state flatly that he serves the truth, not da twoof. We should recall the words of the character in Max Beerbohm's Zuleika Dobson who observed that the Socratic manner is not a game at which two can play.
 
I was slow to catch on, but I believe that Dr. Greening is conducting a maieutic exercise, having wicked fun with us by playing the devil's advocate. He could defuse much of the hostility, if that were his intent, by reminding everyone that he has authored several important papers that undermine the fantasists' sand castle. In particular, he has exposed Jim Hoffman's sloppy calculations, refuting the bogus science of that charlatan, and he has pinned Steven Jones to the mat.

As someone who thinks highly of him, I wish Dr. Greening would state flatly that he serves the truth, not da twoof. We should recall the words of the character in Max Beerbohm's Zuleika Dobson who observed that the Socratic manner is not a game at which two can play.

First we have to know if it really is Dr Greening, if he can answer the question we shall Know.
Only Dr. Greening will know the answer to what I like with my strawberries.
Can Apollo20 answer the strawberry question?
That is the cliff hanger right now.
I kind of thought though that was what he was up to all along but it is up to the poster now to show who he really is.
 
Zinc is an incredibly common element, so I am not surprised to have it show up in the samples.

What does Apollo feel the cause of the spherical iron particles are? and Metamars, what do you think are the cause of the particles? Chainsaw, what do you think are the cause? R. Mackey, what do you think are the cause?

TAM:)

Sorry, I have no opinion, whatsoever*. I really don't know anything about iron spherules, and haven't made much of an effort to read the posts on physorg regarding them. In fact, I've pretty much skimmed past them.


* Well, except that they seem kind of weird. Nano-ball bearings, anybody? :)
 
So is Apollo suggesting the spherical iron was caused by Thermite charges used to bring down the towers?

If not, why are they important at all?
 
Your muted interest is duly noted. Frankly, while I don't know a lot about the JREF forum, I can't say that I'm terribly optimistic about finding anybody who is a 'regular', and who is qualified, taking an objective look (which implies reading the paper). But hey, it's worth a shot.
Still confused.

You admit you don't have the skills to apply C & E. I haven't read it, and it's not readily available, so I can't either. You say you expect Ross's conclusions to be borne out, even though you apparently accept Dr. Greening's and my analyses of Ross that show him to be wrong. You're not interested in following up on those other calculations that show global collapse is expected, yet you expect us to take your banner and prove your conclusions?

Honestly, what do you expect us to do with that? If you had something other than "intuition" to go on, I'd be more interested. Please present it, if there is anything.

As if Mack would actually need to prove this. CD is an extraordinary claim, with no supporting evidence.
Thank you! I'm glad some readers are getting it.

I'm not going to declare that NIST is all-knowing and correct. It may not be. That's what we're discussing here.

But even if NIST is wrong, that still doesn't mean "explosives." What it means is this:

  • Modeling techniques are insufficiently accurate
  • Some observations are wrong or incorrectly measured
  • The building design contained still undiscovered flaws
  • There exist still undiscovered or poorly understood mechanisms in skyscraper fires
  • The building was built below standards, accidentally or directly
If you evaluate all of those options and still find nothing, then we might begin to entertain "CD" discussions. But only if you can explain where they came from, how they got there, how they survived the fires, why nobody saw them before detonation, why they made no shockwaves and threw no shrapnel, and why nobody heard them.

In other words, "CD" is nuts. Just plain nuts.

Scientists:

1. Is the only evidence you have for "molten iron" at GZ, besides vague nonspecific witness references to "molten metal", the spherical Fe particles? If not, what other evidence of "Molten Iron" do you have?

2. As others have posted, could the Fe spherical particles have come from torches used to cut away the iron at GZ, and also come crom "sparks" of iron, that would have occured due to frictional forces as the towers collapsed, etc...?
I'm not a materials scientist or structural engineer, just an aero and AI scientist, so my speculation may not be worth much. But I'll try anyway.

I don't think the iron spherules are signs of iron melting in any significant structural degree. I say this for two reasons:

  • The amount of structural steel recovered from the site matches, to some reasonable degree, the amount that went in.
  • As far as I know, the mysterious molten steel only appears as spherules. There's no puddles, no slag, no blobs, no streaks on other steel members. Just these tiny droplets.
This isn't proof, of course, but then it's hard to prove any negative.

Still, there are some iron spherules, and they are interesting. I suspect they came from one of the following:

  1. Site contamination by cutting operations after the collapses
  2. Erosion of steel members during the aircraft impact or collapse friction
  3. Surface chemistry of steel members during hot burning after collapse
  4. Complex surface chemistry during the fires prior to collapse
What would be much more useful is if we could figure out how much iron became spherules. I suspect it isn't a lot, however widespread individual examples may be. And as others have noted, none of the folks looking at dust samples (except Steven Jones, of course) seem to find this startling.

It is interesting, but I don't think it'll be earth-shattering.

And you'll note I didn't go to NIST even once.

-----

Finally, I have to remark that the level of discourse in this thread is highly disappointing. There is a perfectly reasonable scientific discussion hidden here, but the signal-to-noise is pretty low. And some of that is JREF regulars. I ask you all to lower the level of antagonism here, or find another thread if you cannot.

Have a good weekend, all.
 
oridginaly posted by metamars

I believe somebody should Show it rigorously, but no a steel plate is not so may steel rods, as the crystalline nature of steel is what gives it strength just attaching the rods together increased the strength by the added molecular bonding.
So a steel plate would be stronger than the steel rods, and the rods because steel is so good at sonic shedding of energy, would dissipate more energy as sound vibrations than the steel plate.
Got estimate, with link(s)? I find it very hard to believe that energy lost to "sonic shedding" would not be neglible. Then again, I don't know this for a fact. I've always assumed that wave phenomena would mostly end up transformed into heat energy.

I believe the paper has been extended!

Well, some details and links would be nice....


No I am looking at both Dynamic Impacts and Quasi-static compression.

Shall we assume that you intend to post references to what you found regarding dynamic impacts on I-beams and hollow box columns?


Have you looked at what DBB did on physorg, in reguard to fracture waves?

No, have not. I've mostly dropped out of physorg back in Jan.


PS. IT was some of your very posts that got me looking into this fascinating subject.

Cool. BTW, a friend of the family is a brilliant electrical engineer, who has a worldwide business detecting fractures in large metal structures using phonons. We've briefly chatted about the WTC collapse, and he suggested that pre-existing fractures may have played a large part in the collapse.

Then again, when all you have is a hammer....

N.B.: When he was a young college student, he helped install a bathtub in our house, which neither buckled nor fractured, even after 30 years!
 

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