Something to think about.

(By the way, I am a scientist, PhD qualified with an Honurs
degree in Engineering - specialising in materials and mechanical
design & manufacturing - I even teach materials & mechanical
design at University level)

No, jet fuel cannot melt steel. If it could, foundries would not need to use induction and arc furnaces now, would they?

In 1 atmosphere 101.3 kPa normal air pressure, there is not enough oxygen to reach 1500 degrees to 1650 degrees Celsius, the melting point of iron. When exposed to enough fuel and air for a long period of time, it is possible to get the steel red hot, but not "white hot" on the verge of melting. That is why your barbeque grills, frying pans and cooking pots made of steel do not end up rubbery and guey, like melted glue.

Another interesting fact is that there was NO PANCAKING EFFECT of WTC Twin Tower floors hitting one another, from the top down. In fact, all 3 buildings (WTC 1, 2 and 7) all collapsed at freefall speeds (as if none of the lower supporting floors below displayed any strength, all of a sudden, and in a symmetrical, simultaneous manner, where all columns and supports FAILED at the same time, to create a vertical collapse into the building's footprints... ie. no leaning over on an angle like a felled tree)... Hundreds of thousands of tons of solid concrete all became PULVERISED and converted into fine powder, even after 56 minutes after jet impacts. Scientists have detected the presence of THERMITE in steel samples from the Ground Zero WTC site. Large pools of molten metal were found in the basements, still simmering at over 600 degrees Celsius, several days and several weeks after the collapses of the WTC buildings. (Much hotter than temperatures of steel beams exposed to 250 C flames) Very large 2.0 and 2.1 magnitude earthquakes were measured by seismic monitoring labs in nearby Universities, just before those 3 buildings collapsed, very typical of controlled demolitions. Several news crews, eyewitnesses and firefighters, and even video footage, report or give evidence of multiple explosions: "bang, bang, bang, bang, bang, bang" occuring just a few moments before the WTC buildings collapsed.

Note that all or most of the jet fuel would have been consumed
almost immediately (in a couple of seconds, during the initial
jet fireball). Typically, the hottest temperatures that steel beams
experience in fires is around 250C to 400C (generally around
250C for cool oxygen starved fires which give off black smoke).
The jet fuel would have all been consumed in the initial explosion
when the plane hit a building, and it doesn't just "hang around",
to burn for 56 minutes. Don't forget that concrete is also fire
proof, and does not explode and convert itself into fine powder,
due to exposure to fire, especially 56 minutes of exposure to
fire. It is the concrete that holds up highrise buildings, not the
steel. Besides, the central steel core skeleton of both twin
towers DISAPPEARED, but should have been left standing
even if the floors all collapsed! They were not damaged by the
jet impacts at the lower levels, so why did all this steel collapse
right down to the ground floors? It doesn't make any sense.

If the pancaking theory of the collapse really did happen, then where are the pancakes? Where are the solid concrete floors which should be stacked one on top of each other? The WTC Twin Towers should appear much shorter, with no gaps between floors, leaving behind several levels of undamaged solid floors! So where did all that concrete go??? It all turned into fine powder which covered almost the entire area. Even if you drop a large boulder made of solid concrete from off the top of one of those twin towers (110 floors up), and let it hit the ground, it will not convert completely into fine powder, especially before even hitting the ground! All the collapse videos show horizontal puffs of demoltion squibbs (horizontal blast clouds) used to pulverise strong concrete supports several floors below the collapsing wave of falling debris, so that the building had no material to support the upper portions... this occured sequentially, all the way down both the South and North WTC towers.

http://www.seeloosechange.com (Version 2), Free 1.5 hour movie

and watch the collapse videos at www.prisonplanet.com

Also, watch the movie "9/11 In Plane Sight" and the video
interview of Professor Steven Jones, nuclear physicist and
explosives expert at BYU University, who discovered thermite
which was used to cut all critical steel beams and the strong
core (skeleton) of the WTC twin towers... watch it at:

http://www.prisonplanet.com/articles/september2006/110906Jones.htm

Watch all the collapse videos and photos at:

http://www.plaguepuppy.net/public_html/collapse%20update/

This was definitely a real conspiracy, designed to fool all
people into hating muslims and arabs, to justify the invasion of
Afghanistan and Iraq, and to make war profiteers extremely
wealthy from arms sales, oil theft and reconstruction contracts
handed out to George Bush and Dick Cheney's elite friends.

The "elite" owned mass media is also making big profits from
newspaper and magazine sales, from selling horror stories
from the middle-east. War is great for business! Well done
neo-cons, war profiteers and fear mongers! You have found a
way to get filthy rich from fooling and murdering innocent
civilians, and blaming all this on fictitious extremist Muslim
terrorist organisations, using fake propaganda videos about
Al Qaeda and Bin Laden (who has not yet been caught after
5 years)... oh yea, and by blaming Sadam Hussein for creating
threatening WMD's (Weapons of Mass Destruction) which have
not yet been found after 4 years into this unnecessary war in
Iraq.

Many of us have been duped and fooled by the lying mass media,
and are being led to our slaughter, to die for the war profiteers...

Even the London bombing and Bali bombings were organized,
not by Al Qaeda and Muslim terrorists, but by rich elites and
war mongers who want people to all be afraid of middle-eastern
people, for the sake of invading more oil rich countries, and
helping Israel become the dominant power in the middle-east.
We are seen as "pawns" to be used to fight wars for the greedy
and the rich war profiteers and fear mongers in power... they
know what they are doing, and they are interested in empire
building and more imperialist invasions and permanent
occupations of oil-rich countries, especially Iran, which will be
attacked soon by Israel, the US and the UK... pre-emptively
attacked based on more lies and fake reasons...

Don't believe all the lies and propaganda on your TV! Remember
that solid concrete cannot be pulverised and converted to fine
powder because it has a tensile yield strength of about 4000 psi,
or between 27 to 42 MPa, so the only thing that can weaken all
the concrete pillars holding up all WTC 1, 2 and 7 buildings, is
explosives and thermite used to slice all the steel beems by
melting, so that all buildings could fall downwards, perfectly, in
free fall time (zero resistance from strong material below).

Also the lease owner of all 3 WTC buildings which collapsed on
September 11, Mr Larry Silverstein, himself admitted to
authorising the "pulling" or controlled demolition of Building 7,
the 47 storey skyscraper building that collapsed 6 hours after
the twin towers fell. Remember that Building 7 was not even
hit by a plane, only suffered 2 small fires, and other buildings,
like WTC 5 and 6 which were closer to the twin towers and
which suffered severe structural damage and larger fires, DID
NOT COLLAPSE! Building 7 hardly suffered any structural
damage, yet it just collapsed at freefall speed 6-7 hours after
the collapse of the twin towers!!! Did you see it on TV?

The owner, Mr Silverstein Said these EXACT WORDS about WTC Building 7, which collapsed into it's own footprint at FREE-FALL SPEEDS several hours after the twin towers collapsed, and remember that Building 7 was not hit by any plane or by any of the twin towers:

SILVERSTEIN SAID IN THE PBS "AMERICA REBUILDS" INTERVIEW:

"I remember getting a call from the fire department commander telling me that they were not sure they would be able to contain the fire; and I said, 'You know, we've had such terrible loss of life, maybe the smartest thing to do is PULL IT, and they made that decision to PULL and then we watched the building collapse."

If you don't believe me, hire the movie: "9/11 In Plane Sight"

If you are still NOT convinced, watch the original PBS Documentary "America Rebuilds" (buy or rent it on video).

THE ACTUAL OWNER OF THE THE TWIN TOWERS & WTC 7 ADMITTED THAT BUILDING 7 WAS DESTROYED BY PULLING THE BUILDING...

a demolition operation often takes several days, typically
over a week, to rig a building of that size full of explosives... So
HOW did they manage to rig Building 7 full of explosives within
just 5 or 6 hours after the twin towers collapsed, if the entire
area was covered in fine concrete dust, and WTC building 7 was
still burning in 2 locations? HOW could WTC 7 be "pulled" with
demolition explosives given such short notice, when it takes
over a week to rig a building like this full of explosives at the right
places?

The only answer is: WTC 7 was already pre-planted with
explosives before the jet planes hit WTC 1 and 2 (twin towers).
It comes as no surprise that scientists have found abundant
evidence of thermite on steel samples from Ground Zero, used
to slice steel rapidly so the explosives could blast away the
concrete pillars in a sequential manner, to send all buildings
falling at free-fall (accelerating) speeds.
Source(s):
http://www.st911.org

http://www.serendipity.li

http://www.prisonplanet.com

http://www.infowars.com