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You specify Ground Zero when in truth the Fresh Kills landfill is the relevant location. NIST specify steel when all building materials, particularly the concrete, are relevant.
Have you seen negative test results published somewhere? If so where? All I'm aware of is a complete avoidance of any testing.
Brent Blanchard: Leading Demolition Expert
August 8, 2006: No Explosives Used in WTC Collapse, Says Demolition Industry Leader
Brent Blanchard, a leading professional and writer in the controlled demolition industry, publishes a 12-page report that says it refutes claims that the World Trade Center was destroyed with explosives. The report is published on ImplosionWorld.com, a demolition industry website edited by Blanchard.
Blanchard is also director of field operations for Protec Documentation Services, Inc., a company specializing in monitoring construction-related demolitions. In his report, Blanchard says that Protec had portable field seismographs in “several sites in Manhattan and Brooklyn” on 9/11. He says they did not show the “spikes” that would have been caused by explosions in the towers.
www.popularme...ld-trade-center...
'A Critical Analysis of the Collapse of WTC Towers, 1, 2 & 7 From an Explosives and Demolition Industry Viewpoint'
www.implosionworld.com...
Did experts on the scene think WTC 7 was a controlled demolition?
Whom should we ask to find out if WTC 7’s collapse resembled an explosive demolition? How about asking the explosive demolition experts who were on the scene on 9/11? Brent Blanchard of Protec:
"Several demolition teams had reached Ground Zero by 3:00 pm on 9/11, and these individuals witnessed the collapse of WTC 7 from within a few hundred feet of the event.
We have spoken with several who possess extensive experience in explosive demolition, and all reported seeing or hearing nothing to indicate an explosive detonation precipitating the collapse.
As one eyewitness told us, "We were all standing around helpless...we knew full well it was going to collapse. Everyone there knew. You gotta remember there was a lot of confusion and we didn't know if another plane was coming...but I never heard explosions like demo charges.
We knew with the damage to the building and how hot the fire was, that building was gonna go, so we just waited, and a little later it went."
www.implosionworld.com...
Why did NIST not Consider a “Controlled Demolition
Why did NIST not consider a “controlled demolition” hypothesis with matching computer modeling and explanation as it did for the “pancake theory” hypothesis? A key critique of NIST’s work lies in the complete lack of analysis supporting a “progressive collapse” after the point of collapse initiation and the lack of consideration given to a controlled demolition hypothesis.
NIST conducted an extremely thorough three-year investigation into what caused the WTC towers to collapse, as explained in NIST’s dedicated Web site, wtc.nist.gov.... This included consideration of a number of hypotheses for the collapses of the towers.
Some 200 technical experts—including about 85 career NIST experts and 125 leading experts from the private sector and academia—reviewed tens of thousands of documents, interviewed more than 1,000 people, reviewed 7,000 segments of video footage and 7,000 photographs, analyzed 236 pieces of steel from the wreckage, performed laboratory tests and sophisticated computer simulations of the sequence of events that occurred from the moment the aircraft struck the towers until they began to collapse.
Based on this comprehensive investigation, NIST concluded that the WTC towers collapsed because: (1) the impact of the planes severed and damaged support columns, dislodged fireproofing insulation coating the steel floor trusses and steel columns, and widely dispersed jet fuel over multiple floors; and (2) the subsequent unusually large jet-fuel ignited multi-floor fires (which reached temperatures as high as 1,000 degrees Celsius) significantly weakened the floors and columns with dislodged fireproofing to the point where floors sagged and pulled inward on the perimeter columns. This led to the inward bowing of the perimeter columns and failure of the south face of WTC 1 and the east face of WTC 2, initiating the collapse of each of the towers. Both photographic and video evidence—as well as accounts from the New York Police Department aviation unit during a half-hour period prior to collapse—support this sequence for each tower.
www.webcitation.org...
The average particle size indicates extraordinary demolition.
did two jet airliners create more energy than WW II atomic bomb?
Intended for the Aioi Bridge, the bomb instead exploded directly over the Shima Hospital, which was very near to the Genbaku Dome. Because the atomic bomb exploded almost directly overhead, the building was able to retain its shape. The building's vertical columns were able to resist the nearly vertical downward force of the blast, and parts of the concrete and brick outer walls remained intact. The center of the blast was displaced 150 m (490 ft) horizontally and 600 m (2,000 ft) vertically from the Dome, having slightly missed the original target, the distinctive "T"-shaped Aioi Bridge. The Dome was 160 meters from the hypocenter of the atomic blast. Everyone inside the building was killed instantly
originally posted by: thegimprider
How did it turn into powdered rubble below ground level?
originally posted by: thegimprider
Powder is what was most often loaded and carried out of NYC for months.
Debris was not hauled away and destroyed without forensic examination.
True, it was not. It was examined on site or Fresh Kills.