Tree99

For those that are interested, and who would like to validate the science, this is a good documentry. http://www.911revisited.com Sort of a challenge for people with a background in physics

From what I have learned the jets only had half fuel capacity, and it would seem a little silly if the designers did not account for the fuel, what with jets not typicaly flying without fuel.

Having just recently signed up as a member of SFN, a friend has asked that I post the following document relating to molten metal at WTC 1, 2 & 7. The PDF link... http://www.journalof911studies.com/volume/200704/ProfMorroneOnMeltingWTCsteel.pdf Can I ask people to give there thoughts on the accuracy of this document written by Professor Terry Morrone. This seems like the best place for people to look at this through the impartial objective lens of science.

OK, thanks everyone for your posts. I think I can take from this that it requires some substantial measure of energy to reduce concrete to siad size particles, regardless of which method you chose to do it.

I'll admit, I'm struggling with some of the terminology used here. Could the energy required be decribed in the amount of TNT needed to reduce the concrete to 100 micron particles, and could that then be converted in to KWH (or Mega Joules)? I'm assuming that when you return cast concrete back in to particles, you are un-bonding those particles? Is that correct?

YT2095 Quote "how are you thinking of taking it apart? Blasting it? crushing it? a large belt sander? which..." Hi, I see your point, I did'nt realy think about that. Could it be explained by both blasting it (explosives), and expalined as crushing it (say dropping it from a great height)? I'm not a science student so you'll have to forgive my lack of parameters (if that's the right word). I suppose I'm just trying to find out if it takes alot of energy, or not that much energy, hence my bizzare KWH request as a unit I understand.

Hi all, I have been involved in this ridiculous debate which has raged on for quite some time, and so I would like to pick your collective brains. As the title suggests, the debate is about how much energy would be required to turn a 1 Ton block of set construction concrete back in to particles of a 100 microns across. I don't know if this is something which can be calculated in KWH (killowatt hours), but this is a unit of energy that I understand (probably because I see it every three months when I get my electric bill). I realise this probably sounds a bit silly, but I could not think of any where else to go in order to get an answer. Thanking you all in advance, Claire