Refuting the Hollow Arguments of the So-called 9/11 Debunkers & Truthers
Saturday, December 31, 2016
Debunking 9/11 Debunking
Note: I strongly disagree with some of Griffin's research, such as his analysis of the phone calls from the planes on 9/11 and the Pentagon crash. However, his book does an excellent job in regard to the destruction of the WTC Towers and lack of air defense on 9/11.
Based on David Ray Griffin's book "Debunking 9/11 Debunking" and brilliantly rebuts Popular Mechanics and other defenders of the official conspiracy theory, and shows how their arguments do not stand up to empirical analysis. Pointing out that most objections to the alternative theory, according to which 9/11 was an inside job, are based on purely a priori arguments and a propagandistic use of the term "conspiracy theory," he shows that if we get empirical about 9/11, we can quickly see that the official story cannot be true.
Based on David Ray Griffin's book "Debunking 9/11 Debunking" and brilliantly rebuts Popular Mechanics and other defenders of the official conspiracy theory, and shows how their arguments do not stand up to empirical analysis. Pointing out that most objections to the alternative theory, according to which 9/11 was an inside job, are based on purely a priori arguments and a propagandistic use of the term "conspiracy theory," he shows that if we get empirical about 9/11, we can quickly see that the official story cannot be true.
Friday, December 30, 2016
BREAKING: Bilderberg Website Hacked! Elites Put On Notice
/ / _ __ _ _ __
/--/ / / / /_/ /_/ / // /_/
/ / /-/ /__ / \/__]/-//__ / \
0x? HackBack movement
AnD AnonyMous
===============[ present ]================
=== Message to the People ===
SInCe the Advent of Time, huMans have long forgotten to love and CaRe for eaCh other.
In TheiR egoist, selfish driven minds, a coUpLe of people have managed to get the Power and abuse it against the weakz.
HiStorY is repEating Itself.
TheRe is no EqualiTy between humans on world scale and So called HumAN Rights ArE nothiNg more than an Illusion.
The Globalization and World order system is faVorinG this unbearable situation, at least it IS for huMans-caRers.
whatS going On today: weak PeoPles suffer, die or livE in poVerty to serve upper interestS.
EmPoweRed ElitE plays the world BIG Guys.
This World order is conduCted by grouPs which are composed of WeALthy 1% uber-Elite and CorrUpted empowered Politicians.
DoNt follOw theIr proPagaNda sayIng this situation Is not TruE or Paranoia-driven.
post cold-war LiberaL capitalism has managed tO wideSpreAd *IDEA* that $$$ equals hapiness and should be a lifegoal for the 99%. An egoist goal.
ThIs system also sEttleD durably dOminance of ThesE groups.
they told Us "yOu GoT To worK hard!" TheY don't. Inheriting powerS from their Parents and these groups of "FriEnds".
ThEre Is no suCces sTories sorry: would TOp100 richEst persons alive still been riCh if thEy were born in Africa from poor pArents, No.
ThEse whole grouPs and iNterests are driVen by tHe evil idea that some HuMans (them) are superiorS to others (you).
ThE CurRent sysTem will keep them in place, in good positions and for a good amoUnT of Time.
YOuR CHildrEN stand NO CHANCE aGainst theirs. whatEver schools you put theM in.
NoW() is the time you need to think
NoW() is the time we nEed to put an end to this altogether
As you mAy havE guessEd thIs fight is INequal
PoWeR is in the hand of ThesE groupS
But not All hope is lost
We, the free people, wiLl fIght for You without even asking
But we need mOre than this: we beg you supPort
WiThoUt you, the public, We cAnT do nothing
LiSten to yoUr heart, see the situation and do what you shoUld
YoU *CAN* makE the world a better place
=== Message to the WealthY Elitico-Political 1% RIChEst dominant pricks ===
WoRDs are not enOugh To TeLl you how much we dispiTe you and your dominant behAvior
No HumAns stanD above otheRs and you WIll have to learn IT
Dear Bilderberg mEmBers, From NoW(), each OnE of you have 1 year (365 days) to truly work in faVor of HumaNs and not youR private interests
Each TopIc you disCuss or work you achieve thRough YoUr uber privAte meetinGs should from now benefit WORlD population and not X or Y groUp of people
OtHerWIse, we will FinD you and we Will hAck you
MiNd the cuRrent situation: We conTrol your expensive connected cars, we control your connecteD house security devices, we control your daughter laptop, we control your wife's mobile,
we tape YoUR seCret meetings, we reAD your emaiLs, we control your faVoriTe eScort girl smartWatch, we ARe inside your beLoved banks and we Are reading YoUr assets
You wont be safe anywhere near electricty anyMore
We WiLL watch yOu, from NoW on you got to WoRk for Us, Humanity, the People
====================== [ greets ]=========================
CheErs to PhineAs Fisher, you Re one of the GreatEst hUmaN alive
http://bilderbergmeetings.org/
/--/ / / / /_/ /_/ / // /_/
/ / /-/ /__ / \/__]/-//__ / \
0x? HackBack movement
AnD AnonyMous
===============[ present ]================
=== Message to the People ===
SInCe the Advent of Time, huMans have long forgotten to love and CaRe for eaCh other.
In TheiR egoist, selfish driven minds, a coUpLe of people have managed to get the Power and abuse it against the weakz.
HiStorY is repEating Itself.
TheRe is no EqualiTy between humans on world scale and So called HumAN Rights ArE nothiNg more than an Illusion.
The Globalization and World order system is faVorinG this unbearable situation, at least it IS for huMans-caRers.
whatS going On today: weak PeoPles suffer, die or livE in poVerty to serve upper interestS.
EmPoweRed ElitE plays the world BIG Guys.
This World order is conduCted by grouPs which are composed of WeALthy 1% uber-Elite and CorrUpted empowered Politicians.
DoNt follOw theIr proPagaNda sayIng this situation Is not TruE or Paranoia-driven.
post cold-war LiberaL capitalism has managed tO wideSpreAd *IDEA* that $$$ equals hapiness and should be a lifegoal for the 99%. An egoist goal.
ThIs system also sEttleD durably dOminance of ThesE groups.
they told Us "yOu GoT To worK hard!" TheY don't. Inheriting powerS from their Parents and these groups of "FriEnds".
ThEre Is no suCces sTories sorry: would TOp100 richEst persons alive still been riCh if thEy were born in Africa from poor pArents, No.
ThEse whole grouPs and iNterests are driVen by tHe evil idea that some HuMans (them) are superiorS to others (you).
ThE CurRent sysTem will keep them in place, in good positions and for a good amoUnT of Time.
YOuR CHildrEN stand NO CHANCE aGainst theirs. whatEver schools you put theM in.
NoW() is the time you need to think
NoW() is the time we nEed to put an end to this altogether
As you mAy havE guessEd thIs fight is INequal
PoWeR is in the hand of ThesE groupS
But not All hope is lost
We, the free people, wiLl fIght for You without even asking
But we need mOre than this: we beg you supPort
WiThoUt you, the public, We cAnT do nothing
LiSten to yoUr heart, see the situation and do what you shoUld
YoU *CAN* makE the world a better place
=== Message to the WealthY Elitico-Political 1% RIChEst dominant pricks ===
WoRDs are not enOugh To TeLl you how much we dispiTe you and your dominant behAvior
No HumAns stanD above otheRs and you WIll have to learn IT
Dear Bilderberg mEmBers, From NoW(), each OnE of you have 1 year (365 days) to truly work in faVor of HumaNs and not youR private interests
Each TopIc you disCuss or work you achieve thRough YoUr uber privAte meetinGs should from now benefit WORlD population and not X or Y groUp of people
OtHerWIse, we will FinD you and we Will hAck you
MiNd the cuRrent situation: We conTrol your expensive connected cars, we control your connecteD house security devices, we control your daughter laptop, we control your wife's mobile,
we tape YoUR seCret meetings, we reAD your emaiLs, we control your faVoriTe eScort girl smartWatch, we ARe inside your beLoved banks and we Are reading YoUr assets
You wont be safe anywhere near electricty anyMore
We WiLL watch yOu, from NoW on you got to WoRk for Us, Humanity, the People
====================== [ greets ]=========================
CheErs to PhineAs Fisher, you Re one of the GreatEst hUmaN alive
http://bilderbergmeetings.org/
BILDERBERG GROUP DOCUMENTARY ANONYMOUS by debunkerbuster
Thursday, December 29, 2016
Tuesday, December 27, 2016
Another Milestone: 2,750 Architects & Engineers
A few days ago we surpassed the milestone of 2,750 architects and engineers — adding another 250 signatories to our petition since last April!
To reflect on the significance of this achievement, I would like to share with you a selection of statements (shown below) from the courageous architects and engineers who, since the previous milestone, have signed our petition demanding a new investigation of the World Trade Center’s destruction on 9/11...
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“I'm a chemical engineer with bachelors and masters degrees in engineering from the University of Michigan. I'm an authority on the flammability of materials and I have testified in court on this subject. WTC 7 was demolished with explosives attached to the structural frame. Hardly anything in the building was flammable; it was mostly steel, glass, and masonry.” — Bruce CaswellMonday, December 26, 2016
UNREAL: SNOPES FOUNDER MARRIES EX-PORN STAR, ESCORT… HIRES HER AS FACT-CHECKING SITE ADMIN!
The Conservative Tribune reports, Well, here are a few well-checked facts for you… Snopes — neutral, reliable, trustworthy Snopes — is a quagmire of embezzling, pot-smoking licentious greed. There, I’ve said it, but I don’t feel one bit better. Founder (with wife Barbara) David Mikkelson is embroiled in a legal battle following their highly contentious divorce last year. Barbara claims that David embezzled $98,000 in company funds, took private trips and paid for prostitutes as a business expense, and that he put his mistress, Elyssa Young, now his wife, on the payroll, according to the U.K. Daily Mail.
http://nomorefakenews.blogspot.com
The Third Tower - BSA Space - Dec. 16, 2016 - Richard Gage, AIA
AE911Truth founder and CEO Richard Gage, AIA, provides an overview of the evidence related to the collapse of WTC 7 on December 16, 2016, at the BSA Space, home of the Boston Society of Architects.
The Third Tower - BSA Space - Dec... by debunkerbuster
The Third Tower - BSA Space - Dec... by debunkerbuster
Sunday, December 25, 2016
Saturday, December 24, 2016
FREE Norad Santa Tracker
You can track Santa with the FREE Norad Santa Tracker! Watch him travel around the world delivering presents to sleeping children.
Friday, December 23, 2016
Wednesday, December 21, 2016
FRAUD EXPOSED IN NIST WTC 7 REPORTS — PART 2 OF 5
NIST heated the floor beams, but not the slab. Since concrete expands at 85% the rate of steel, leaving this expansion out of the calculations of the failure of the shear studs is fraudulent.
MAGICAL THERMAL EXPANSION
Part 1 of Chris Sarns’ report, regarding the burned-out fire in WTC 7, is available here.
Part 2 (below) was originally published on June 10, 2013.
NOTE: Quotes from NIST's WTC 7 reports are shown in Bold Light Blue.
NIST used numerous unscientific methods and fraudulent inputs to get the key girder to fail in its computer simulation.
For example, NIST arbitrarily added 10% to the temperature results of its fire dynamics simulation (FDS).
“Case A used the temperature data as obtained from the FDS simulation. Case B increased the Case A gas temperatures by 10 percent.” — NCSTAR 1A, page 32 [PDF page 74]
“[O]nly the fire-induced damage produced by Case B temperatures was carried forward as the initial condition for the building collapse analysis.” — NCSTAR 1A, page 36 [PDF page 78]
To get the shear studs on the floor beams to fail, NIST had to assume high steel temperatures. It applied the heat in 1½ seconds over the entire northeast part of Floor 13. This faulty method of calculating temperatures, though, does not allow for the reality of heat dispersal or for the inevitable beam sagging.
Interestingly, NIST's model heated the floor beams but not the concrete slab. Since concrete expands at 85% the rate of steel, leaving this expansion out of the calculations of the shear studs failure is fraudulent.
“The girder and beam temperatures were assumed to be 500° C and 600° C, respectively, and the slab was assumed to remain unheated.” — NCSTAR 1-9, Vol. 1, page 349 [PDF page 393]
“Ramping of the temperatures for the beams and the girder then commenced at 1.1 s, leveling off at temperatures of 600° C for the beams and 500° C for the girder at 2.6 s. These temperature histories were prescribed uniformly for all nodes of the beams and the girder, respectively.” — NCSTAR 1-9, Vol. 1, page 352 [PDF page 396]
“The first failures observed were of the shear studs, which were produced by axial expansion of the floor beams, and which began to occur at fairly low beam temperature of 103° C. . . . When the beam temperatures had reached 300° C, all but three shear studs in the model had failed due to axial expansion of the beams, leaving the top flanges of the beams essentially unrestrained laterally.” — NCSTAR 1-9, Vol. 1, page 352 [PDF page 396]
“This analysis demonstrated possible failure mechanisms that were used to develop the leading collapse hypothesis further. The failure modes in this model were incorporated into the 16-story ANSYS and 47-story LS-DYNA analyses.” — NCSTAR 1-9, Vol. 1, page 353 [PDF page 397]
NIST assumed that it took 90 minutes for the fires—which it said were started by burning debris from WTC 1 some 350 feet away—to develop into a 2MW (megawatt) fire.
“The choice of a 2 MW fire at 12:00 noon was a somewhat arbitrary initialization of the simulations, but there is little visual evidence of how the fires behaved in the time period between 10:28:22 a.m. and 2:00 p.m. . . . starting the calculations at noon was convenient in that the simulation time was the same as the actual clock time.” — NCSTAR 1-9, Vol. 2, page 377 [PDF page 443]
In NIST's scenario, the damage and the collapse would have occurred at 4:00 p.m.
“The building response is examined at 3.5 h and 4.0 h of heating. At 3.5 h, the floor systems had fire-induced damage and failures of some connections, beams, and girders. After 4.0 h of heating, there was substantially more damage and failures in the WTC 7 structural floor system, particularly in the northeast region surrounding Column 79. The structural condition at these two times illustrates how the structure developed sufficient fire-induced damage to reach the collapse initiation event.” — NCSTAR 1-9, Vol. 2, page 493 [PDF page 559]
Building Response at 4.0 h
“On Floor 13 (Figure 11–35), all four of the north-south girders attached to Columns 79, 80, and 81 had failed, due to either buckling or girder walk off of the bearing seat at Columns 79 and 81.” — NCSTAR 1-9, Vol. 2, page 504 [PDF page 570]
“Fire-induced thermal expansion of the floor system surrounding Column 79 led to the collapse of Floor 13, which triggered a cascade of floor failures. . . . This left Column 79 with insufficient lateral support, and as a consequence, the column buckled eastward, becoming the initial local failure for collapse initiation.” — NCSTAR 1A, page 22 [PDF page 64]
NIST assumed that all the expansion would occur on one end of the floor beams, which is quite impossible. Furthermore, NIST failed to account for beam sag that would have prevented the floor beams from expanding lengthwise more than 5.392 inches at 600° C even if all the expansion were on one end.
Table 10-1 shows that the floor beams under floor 13 did not exceed 600° C in the northeast section.
Without loss of length due to sagging, at 600° C the floor beams would have expanded 5.517 inches, which is why NIST said that the seat was only 11 inches wide in the final report. Had NIST taken sag into consideration, it would have shortened the beams by 1/8 inch, to 5.392 inches at 600° C — not enough to cause failure, even if the seat were only 11 inches wide.
“A girder was considered to have lost vertical support when its web was no longer supported by the bearing seat. The bearing seat at Column 79 was 11 in. wide. Thus, when the girder end at Column 79 had been pushed laterally at least 5.5 in., it was no longer supported by the bearing seat.” — NCSTAR 1-9, Vol. 2, page 527 [PDF page 593]
An errata published by NIST in 2012 corrected the “mistake” (about the width of the column seat) that had been made in the final report.
“The bearing seat at Column 79 was 11 12 in. wide. Thus, when the girder end at Column 79 had been pushed laterally at least 5.5 6.25 in., it was no longer supported by the bearing seat.” See June 2012 Text Changes to the NIST Reports.
By acknowledging that the seat was in fact 12 inches wide, NIST is admitting that thermal expansion could not have caused the girder to fail; therefore, its hypothesis fails.
Note that the maximum expansion is 5.728 inches at 654° C, because loss due to sagging exceeds elongation due to thermal expansion after that.
As shown in the graph, structural steel sags as temperature rises, decreasing its length and negating the thermal expansion that NIST blames for the collapse of WTC 7.
But the impossibilities don't stop there. Another thing that makes walk-off impossible is that even if the floor beams could have expanded 6.25 inches on one end and even if no sagging had occurred, the side plate on column 79 would have prevented the girder from falling off its seat. The girder would have expanded in length until it was pressing up against the column between the side plates.
NIST ignored its own finding:
“Temperatures were uniform (within 1° C) across the bottom flange and web, but the top flange temperature was less by up to several hundred degrees because the slab acted as a heat sink.” — NCSTAR 1-9, Vol. 2, page 391 [PDF page 457]
Thermal expansion would cause the bottom flange to expand more than the top flange, forcing the beam to bow downward. The NIST hypothesis does not allow for downward bowing.
But NIST said that the critical damage occurred at temperatures below 400° C.
“The initiating local failure that began the probable WTC 7 collapse sequence was the buckling of Column 79. This buckling arose from a process that occurred at temperatures at or below approximately 400° C (750° F).” — NCSTAR 1A, page 21 [PDF page 63]
“Fire-induced thermal expansion of the floor system surrounding Column 79 led to the collapse of Floor 13, which triggered a cascade of floor failures. In this case, the floor beams on the east side of the building expanded enough that they pushed the girder spanning between Columns 79 and 44 to the west on the 13th floor. This movement was enough for the girder to walk off of its support at Column 79.” — NCSTAR 1A, page 22 [PDF page 64]
In the temperature and sag spread sheet above, 400° C would expand the 53-foot floor beams only 3.3 inches.
Pursuant to a FOIA request by AE911Truth structural engineer Ron Brookman, NIST finally released the structural and shop drawings in January 2012.
They can be downloaded here: WTC 7 Blueprints Exposed Via FOIA Request: Building Plans Allow for Deeper Analysis of Skyscraper’s Destruction.
Brookman went through the hundreds of drawings and found drawing 1091, which shows the girder seat was 12 inches wide (as noted above), not the 11 inches claimed in the final report. He also found drawing 9114, which shows web/flange stiffeners at the column 79 end of the girder between column 44 and 79.
NIST omitted these web/flange stiffeners that would have prevented the bottom flange from folding as required for their collapse to begin. The girder would have to be pushed almost all the way off the seat, not just half way, before the bottom flange would buckle.
“Walk-off failure of beams and girders was defined to occur when. . . . the beam or girder was pushed laterally until its web was no longer supported by the bearing seat. . . . [T]he beam was assumed to have lost support, as the flexural stiffness of the bottom flange was assumed to be insufficient for transferring the gravity loads.” — NCSTAR 1-9, Vol. 2, page 488 [PDF page 554]
The web/flange stiffeners are on the Frankel drawings, but not on the NIST drawings in the final report.
Thanks to the persistence of researcher David Cole, NIST admitted that they omitted the web/flange stiffeners. See: http://911blogger.com/news/2013-11-06/nist-replies-stiffeners-inquiry
NIST’s drawing of column 79 omits the web/flange stiffeners that would have prevented the girder's failure.
Frankel’s original column drawings (above and below) show the 3/4” web/flange stiffeners in place.
Tuesday, December 20, 2016
FRAUD EXPOSED IN NIST WTC 7 REPORTS — PART 1 OF 5
All things being equal, the fire would have spread consistently. But the NIST computer model inexplicably bypassed the offices to the southwest of column 79, burned around column 79 on the east side, and then, two hours later, burned the offices to the southwest of column 79.
BURNED-OUT FIRE
Chris Sarns’ research appears in Dr. David Ray Griffin’s book, The Mysterious Collapse of World Trade Center 7. Sarns has been deeply involved in the work of AE911Truth, where he provides his expertise on WTC 7.
The studies in this five-part series, written for Architects & Engineers for 9/11 Truth and originally published between May and September 2013, represent years of work that Sarns did in unraveling some of the most glaring inconsistencies and outright frauds in the NIST report on World Trade Center 7. He demonstrates that NIST’s theory of a fire-induced collapse of Building 7 is faulty and misleading. The destruction of this skyscraper on September 11 was truly unprecedented in the history of high-rise buildings.
Part 1 of Sarns' series (below) was first published in May 2013, when close to 2,000 architects and engineers at AE911Truth were demanding a new investigation. By December 2016, the number of A/E petition-signers had swelled to nearly 2,750.
In this five-part series, I will expose and disprove NIST's false claims in five critically important areas:
- BURNED-OUT FIRE — The timing of the fire on Floor 12 exposes NIST's false claim that fire led to the collapse.
- MAGICAL THERMAL EXPANSION — NIST used numerous unscientific methods and fraudulent inputs to get the key girder to fail in its computer simulation.
- MISSING SHEAR STUDS — NIST’s claim in its Final Report about the lack of shear studs on the floor support girder between columns 44 and 79 is exposed.
- FICTITIOUS DEBRIS DAMAGE — The fictitious “10-story gouge” claimed early on by NIST in WTC 7’s south face is exposed.
- NON-EXISTENT DIESEL FUEL FIRE — NIST’s fraudulent diesel fuel fire hypothesis is exposed.
NOTE: Quotes from NIST's WTC 7 reports are shown inBold Light Blue.
The timing of the fire on Floor 12 exposes NIST's false claim that fire led to the collapse.
Below, the four images in the middle column are photographs taken of World Trade Center 7 at four different times in the afternoon of September 11, 2001.
The four graphics in the left column are my approximations, using the photographs as a guide, of where—and at what times—a fire was actually burning on Floor 12.
And the four graphics in the right column are NIST's ANSYS computer model of where the fires were burning in the building at the same four times.
“Note that only window glass breaking times were prescribed in the fire model. The observed fire activity gleaned from the photographs and video were not a model input.” — NCSTAR 1-9, Vol. 2, page 378 [PDF page 444]
NIST will not release the input data because doing so, it claims, might “jeopardize public safety.”
Quotes and photographs from the NIST reports on the collapse of WTC 7
Quotes on the spreading of the fire:
“On those floors that were mostly subdivided into offices (such as Floors 11 and 12), the fire would have grown within a single office, reaching flashover within several minutes. After about 5 to 15 min, the ceiling tile system would have failed from the heat, and the hot air would have flowed over the office wall. Soon the hot air would fail the ceiling of an adjacent office, and eventually the thermal radiation would ignite the contents in this office. Fire spread would have been similar for offices separated by a corridor, although this would have taken longer, since the hot air would have to travel further and would be cooling along the way.” — NCSTAR 1A, page 19 [PDF page 61]
“The mass of the furnishings per office was not known” — NCSTAR 1-9, Vol. 1, page 60 [PDF page 104]
“[T]he average combustible fuel load on the 11th and 12th floors was estimated as 32 kg/m2.” — NCSTAR 1-9, Vol. 2, page 376 [PDF page 442]
All things being equal, the fire would have spread consistently. But in the NIST computer model, the fire inexplicably bypassed the offices to the southwest of column 79, burned around column 79 on the east side, and then, two hours later, burned the offices to the southwest of column 79.
“Fires . . . on Floors 11 to 13 persisted in any given location for approximately 20 min to 30 min.” — NCSTAR 1A, page 47 [PDF page 89]
Photos showing progression of fire:
“From 11:30 a.m. to 2:30 p.m. Looking from southeast corner to the south face.
Fire on floor 12;[1] area above covered with smoke.
Fire on floors 11-12[1] moved to east face and progressed to the north.
[1] [F]ires reported on floor 14, but photographs showed east face fires on floor 12.” — Part IIC, page 21
“Fire was first seen on the 12th floor at 2:08 p.m. toward the south end of the east face. Further south on this face, the window glass was still intact, indicating that this fire had burned in the building interior as it turned the southeast corner.” — NCSTAR 1A, page 20 [PDF page 62]
“By around 2:30 p.m., the visible flames had diminished, but the fire had spread both south into the southeast corner and north, reaching two-thirds of the way to the northeast corner.” — NCSTAR 1A, page 20 [PDF page 62]
Fire first appeared on the north face of Floor 12 about 80 feet from the northeast corner:
“By 3:00 p.m., the fire had spread internally past the northeast corner and onto the north face.” — NCSTAR 1A, page 20 [PDF page 62]
The fire spread internally through the offices around column 79 and under the beams, which allegedly underwent enough thermal expansion to push a girder off its seat and initiate the “global collapse” at 5:20 PM.
“In less than 15 min, the fire simultaneously spread rapidly to the east to engulf the northeast corner of the floor and more slowly westward about one-third of the way across the north face.” — NCSTAR 1A p. 20 [PDF page 62]
“The fire continued spreading westward in starts and stops, approaching the northwest corner of the floor around 3:45 p.m.” — NCSTAR 1A, page 20 [PDF page 62]
The photographs reveal that the fire on Floor 12 had progressed from the south side of the building to the north side via the interior offices by 3:00 PM and had engulfed the northeast corner by about 3:15 PM. This means that the fire in the area in question (around column 79 and under the beams and girder in the northeast corner) had burned out by about 3:50 PM, because, as noted above, the fires burned for only about 20 to 30 minutes in any given location.
References:
NCSTAR 1-9 Vol.1 and 2 Structural Fire Response and Probable Collapse Sequence of World Trade Center Building 7