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Keyword and entity retrieval over indexed evidence, hypotheses, and claims. Nothing is answered from model memory on this page. For a scored percentage with the working shown, open Fact or Fiction.
Topic remit
Day of
Engineering
Facilitation
Intelligence & process
Foreknowledge
Independent cluster
Entities
- Omar al-Bayoumi
- Nawaf al-Hazmi
- Khalid al-Mihdhar
- Fahad al-Thumairy
- Mohdar Abdullah
- Prince Bandar bin Sultan
- Abdussattar Shaikh
- Holly Ratchford
- Thomas Kean
- Larry Silverstein
- Anthony Shaffer
- Kenneth Williams
- Coleen Rowley
- Zacarias Moussaoui
- Mahmoud Ahmad
- George W. Bush
- Lorie Van Auken
- Peter Dale Scott
- Barbara Elias-Sanborn
- Richard A. Clarke
- Thomas W. Eagar
- Christopher Musso
Matching hypotheses
Matching claims
- verifiedCLM-007
U.S. agencies had actionable information on Mihdhar's U.S. visa in January 2000 and failed to watchlist him until August 2001.
- well_supportedCLM-009
The FBI withheld Bayoumi-related intelligence from the 9/11 Commission.
- disputedCLM-010
Bayoumi's assistance was ordinary Muslim hospitality with no tasking.
- verifiedCLM-011
American Airlines Flight 11 struck World Trade Center 1 at 08:46:40 on 11 September 2001.
- disputedCLM-020
Able Danger identified Mohamed Atta's cell before 11 September and was blocked from notifying the FBI.
- disputedCLM-035
A small CIA Alec Station group intentionally withheld Mihdhar/Hazmi information from the FBI, and the purpose became to allow the attacks.
- well_supportedCLM-039
CIA senior products in summer 2001 described Bin Ladin attacks as imminent, including a strike in the US, without time/place/target.
Evidence supporting
35Phoenix memo, 10 July 2001: bin Laden students at U.S. aviation schools
FBI Phoenix Electronic Communication, 10 July 2001 (Kenneth Williams) · 2001-07-10
An FBI agent documented a bin Laden–flight-school hypothesis in July 2001 that was not actioned nationally before the attacks.
Coleen Rowley: FBI HQ blocked a FISA search of Moussaoui's laptop
Coleen Rowley memo to FBI Director Mueller (May 2002) on the Moussaoui case · 2002-05-21
A flight-school student connected to radical jihadist travel was in FBI custody before 11 September; a requested FISA search was not obtained.
Lorie Van Auken and Bob McIlvaine — Toronto Report ch.1 family testimony
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Two 9/11 family members testified in 2011 about their dead, the Jersey Girls' campaign for a full investigation, three NORAD public timelines, and Van Auken's contemporaneous unease at the Florida classroom footage.
David Ray Griffin — Anomalies in official accounts of AA77 and UA93 (Toronto Report ch.7)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Griffin's 2012 chapter lists named process contradictions on AA77 notification and UA93 notification, plus Pentagon-object and UA93-shoot-down arguments with named witnesses and an FAA memo.
PDB 6 August 2001: Bin Ladin Determined To Strike in US
President's Daily Brief, 6 August 2001 — 'Bin Ladin Determined To Strike in US' · 2001-08-06
The President received a 6 August 2001 brief stating Bin Ladin was determined to strike in the United States, including hijacking-related patterns.
CIA email 21 August 2001: 'Re: Khalid Al-Mihdhar'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-21
A CIA email dated 21 August 2001 is titled Re: Khalid Al-Mihdhar and is a Commission Chapter 8 citation.
Evidence contradicting
4UA93 ACARS 09:23 and 09:28 mayday — NSAEBB 196 quotation
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2001-09-11
NTSB ACARS/ATC text quoted by NSArchive: UA93 received a 09:23 warning about cockpit intrusion and the NY impacts, then at 09:28 transmitted a mayday / 'hey get out of here' as it was hijacked.
Commission: UA93 crashed near Shanksville at 10:03:11 after a passenger revolt
9/11 Commission Report · 2004-07-22
UA93 impacted a field in Somerset County, Pennsylvania, at 10:03:11. Official transcription of the CVR describes a passenger counterattack.
Commission: hijacker-still-alive reports were mistaken identity
9/11 Commission Report · 2004-07-22
The Commission treats early 'hijackers alive' stories as identification errors.
Jonathan Cole — Discussion of Le & Bažant spontaneous-collapse paper (Jul 2023)
Journal of 9/11 Studies · 2023-07-01
An ASCE member published a 2023 discussion challenging Le & Bažant's spontaneous-collapse treatment of the towers.
Ambiguous
44SHSU LibGuide page: 9/11 Attack, Afghan and Iraq Wars
SHSU Library — U.S. History: Primary Source Collections Online (9/11 page) · 2026-04-16
On 3 September 2026 the SHSU guide listed eight 9/11-related collections and one Iraq-war Veterans History Project link, with the annotations quoted in full_text.
September 11 Digital Archive — holdings statement
September 11 Digital Archive (RRCHNM / ASHP) · 2026-09-03
The Archive states a 150,000-item holding and a 2003 Library of Congress acquisition. Public Omeka browse listed 70,359 items on 3 Sep 2026.
FDNY Incident Action Plans collection (Ground Zero, Sep 2001–2002)
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-21
FDNY published daily Incident Action Plans for Ground Zero rescue and recovery from at least 21 September 2001 through early 2002, covering hazards, void searches, and DDC work in the pit. A 911DA collection hosts them.
CIA IG August 2001: CTC practices reviewed positively — vs later OIG/Commission
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-01
NSArchive records that a CIA Inspector General review completed in August 2001 praised CTC information-management and FBI cooperation, in contrast to the 2004 CIA OIG and the Commission.
Michael Ragsdale flyer collection — street paper, 11 Sep 2001–15 Sep 2002
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-12
A near-daily street collection of ~1,000 NYC flyers exists for the year after 11 September, including 11 September hospital/command-centre notices and early CIA/FBI-trust and anti-war posters.
911DA story: last Windows/observation-deck visit the night of 10 September
September 11 Digital Archive (RRCHNM / ASHP) · 2002-10-22
A October 2002 Digital Archive story claims a visitor party was on the WTC observation deck around 22:00 on 10 September 2001 and was offered rain checks dated 11 September.
Contemporary reports
38Phoenix memo, 10 July 2001: bin Laden students at U.S. aviation schools
FBI Phoenix Electronic Communication, 10 July 2001 (Kenneth Williams) · 2001-07-10
An FBI agent documented a bin Laden–flight-school hypothesis in July 2001 that was not actioned nationally before the attacks.
Coleen Rowley: FBI HQ blocked a FISA search of Moussaoui's laptop
Coleen Rowley memo to FBI Director Mueller (May 2002) on the Moussaoui case · 2002-05-21
A flight-school student connected to radical jihadist travel was in FBI custody before 11 September; a requested FISA search was not obtained.
PDB 6 August 2001: Bin Ladin Determined To Strike in US
President's Daily Brief, 6 August 2001 — 'Bin Ladin Determined To Strike in US' · 2001-08-06
The President received a 6 August 2001 brief stating Bin Ladin was determined to strike in the United States, including hijacking-related patterns.
CIA email 21 August 2001: 'Re: Khalid Al-Mihdhar'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-21
A CIA email dated 21 August 2001 is titled Re: Khalid Al-Mihdhar and is a Commission Chapter 8 citation.
DCI Report draft 19 March 2004: FBI dissemination still 'spotty'; cultures clash
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2004-03-19
A March 2004 CIA draft history says FBI internal dissemination remained so weak that CIA officers still hand-delivered messages, and that FBI-CIA cultural clash impeded results.
FDNY Incident Action Plans collection (Ground Zero, Sep 2001–2002)
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-21
FDNY published daily Incident Action Plans for Ground Zero rescue and recovery from at least 21 September 2001 through early 2002, covering hazards, void searches, and DDC work in the pit. A 911DA collection hosts them.
Later recollections / analysis
45SHSU LibGuide page: 9/11 Attack, Afghan and Iraq Wars
SHSU Library — U.S. History: Primary Source Collections Online (9/11 page) · 2026-04-16
On 3 September 2026 the SHSU guide listed eight 9/11-related collections and one Iraq-war Veterans History Project link, with the annotations quoted in full_text.
Lorie Van Auken and Bob McIlvaine — Toronto Report ch.1 family testimony
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Two 9/11 family members testified in 2011 about their dead, the Jersey Girls' campaign for a full investigation, three NORAD public timelines, and Van Auken's contemporaneous unease at the Florida classroom footage.
David Ray Griffin — Anomalies in official accounts of AA77 and UA93 (Toronto Report ch.7)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Griffin's 2012 chapter lists named process contradictions on AA77 notification and UA93 notification, plus Pentagon-object and UA93-shoot-down arguments with named witnesses and an FAA memo.
September 11 Digital Archive — holdings statement
September 11 Digital Archive (RRCHNM / ASHP) · 2026-09-03
The Archive states a 150,000-item holding and a 2003 Library of Congress acquisition. Public Omeka browse listed 70,359 items on 3 Sep 2026.
Peter Dale Scott — 9/11 as a deep event: CIA personnel helped allow it (Toronto Report ch.5)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Scott's 2012 chapter restates a documented CIA-to-FBI withholding pattern around Mihdhar and Hazmi (Malaysia 2000, visa, watchlisting) attributed to a small Alec Station group, and adds a Saudi-GID liaison hypothesis plus an 'allowed to proceed' inference.
FBI 2017: Bayoumi paid as GIP cooptee via Ambassador Bandar
FBI materials released under Executive Order 14040 · 2017-06-14
An official FBI analytical document asserts Bayoumi was a paid GIP cooptee through Bandar, 1998–2001.
Official documents
39Phoenix memo, 10 July 2001: bin Laden students at U.S. aviation schools
FBI Phoenix Electronic Communication, 10 July 2001 (Kenneth Williams) · 2001-07-10
An FBI agent documented a bin Laden–flight-school hypothesis in July 2001 that was not actioned nationally before the attacks.
Coleen Rowley: FBI HQ blocked a FISA search of Moussaoui's laptop
Coleen Rowley memo to FBI Director Mueller (May 2002) on the Moussaoui case · 2002-05-21
A flight-school student connected to radical jihadist travel was in FBI custody before 11 September; a requested FISA search was not obtained.
PDB 6 August 2001: Bin Ladin Determined To Strike in US
President's Daily Brief, 6 August 2001 — 'Bin Ladin Determined To Strike in US' · 2001-08-06
The President received a 6 August 2001 brief stating Bin Ladin was determined to strike in the United States, including hijacking-related patterns.
CIA email 21 August 2001: 'Re: Khalid Al-Mihdhar'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-21
A CIA email dated 21 August 2001 is titled Re: Khalid Al-Mihdhar and is a Commission Chapter 8 citation.
DCI Report draft 19 March 2004: FBI dissemination still 'spotty'; cultures clash
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2004-03-19
A March 2004 CIA draft history says FBI internal dissemination remained so weak that CIA officers still hand-delivered messages, and that FBI-CIA cultural clash impeded results.
CIA had Mihdhar visa information in January 2000; FBI notified August 2001
9/11 Commission Report · 2004-07-22
U.S. intelligence possessed Mihdhar's visa/travel data in January 2000 and did not get it to FBI watchlisting until August 2001.
Independent / media
26Lorie Van Auken and Bob McIlvaine — Toronto Report ch.1 family testimony
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Two 9/11 family members testified in 2011 about their dead, the Jersey Girls' campaign for a full investigation, three NORAD public timelines, and Van Auken's contemporaneous unease at the Florida classroom footage.
David Ray Griffin — Anomalies in official accounts of AA77 and UA93 (Toronto Report ch.7)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Griffin's 2012 chapter lists named process contradictions on AA77 notification and UA93 notification, plus Pentagon-object and UA93-shoot-down arguments with named witnesses and an FAA memo.
Peter Dale Scott — 9/11 as a deep event: CIA personnel helped allow it (Toronto Report ch.5)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Scott's 2012 chapter restates a documented CIA-to-FBI withholding pattern around Mihdhar and Hazmi (Malaysia 2000, visa, watchlisting) attributed to a small Alec Station group, and adds a Saudi-GID liaison hypothesis plus an 'allowed to proceed' inference.
Kevin R. Ryan — Why the NIST World Trade Center Reports are False (Toronto Report ch.3)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Ryan cites NIST test and model figures (steel temperatures, sag, expansion, fire duration) and states they do not support the published collapse sequences; he notes NIST did not release its global models for independent runs.
2011 Toronto Hearings and 2012 Toronto Report — catalogue
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
A 2011 academic/legal hearing produced an 18-chapter 2012 report arguing the official account is false. Eleven chapters are objects in this lab; seven are title-catalogued.
Paul Zarembka — Insider trading before 9/11 re-examined (Toronto Report ch.6)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
A 2012 hearing paper surveys three academic option-market studies and argues the combined pre-attack activity is not plausibly random, while treating UAL/AMR themselves as weak because of hedging.
Unresolved contradictions
- CTR-001Bayoumi's intelligence role: Commission 2004 vs FBI 2017
- CTR-002Thumairy assistance: Commission vs FBI 2021
- CTR-006FBI access representation vs later material
- CTR-010Able Danger Atta identification
- CTR-021CIA IG August 2001 praise vs 2004 CIA OIG / Commission on CTC