Choose a document by its format and purpose
Use this register to identify which original documents are available, in what format, and how much of each was reviewed. Each entry gives the exact title, publisher, date or version, file format, original-host link and availability status. The links lead to publisher pages or files; BuildingWhat does not host these documents here. Availability describes the reviewed record and can change at the publisher. This page does not independently reproduce findings or evaluate their underlying evidence.
Hiring a Contractor — FTC PDF
“Hiring a Contractor” is a PDF from the Federal Trade Commission dated March 2014. Its original-host link is https://www.bulkorder.ftc.gov/system/files/publications/pdf-0057-hiring-contractor.pdf. The reviewed record is the original publisher PDF, not a restored BuildingWhat file. For questions about selecting a contractor, written estimates, project scope, change orders, recordkeeping and final sign-off, it offers general consumer guidance. The limit: its legal, payment, insurance and cancellation statements are historical and not current rules. [1]
WTC 7 investigation FAQ — NIST webpage
“FAQs - NIST WTC 7 Investigation | NIST” is an HTML page from the National Institute of Standards and Technology, recorded as created September 13, 2011 and updated April 5, 2022. Its original-host link is https://www.nist.gov/world-trade-center-investigation/study-faqs/wtc-7-investigation. The reviewed capture covers FAQ 21–25 of the official FAQ page, not every linked NCSTAR report. For NIST’s account of evidence, fireproofing assumptions, model comparisons and stated limitations, read these answers as attributed institutional explanations. This register does not independently reproduce the investigation or assess the full reports. [2]
WTC bulk-chemistry report — USGS webpage
“USGS Spectroscopy Lab - World Trade Center USGS Bulk Chemistry results” is an HTML page published by the U.S. Geological Survey as Open-File Report 01-0429 (2001). Its original-host link is https://pubs.usgs.gov/of/2001/ofr-01-0429/chem1/. The reviewed record is the original USGS report page. For bulk element composition and interpretation of the agency’s own mixed dust and girder-coating samples, it supplies methods and observations. Limit its use: it is not an explosive-residue identification test, a replication or rebuttal of the 2009 paper, or a finding about a specific building’s provenance. [3]
Harrit and coauthors (2009) — original paper
“Active Thermitic Material Discovered in Dust from the 9/11 World Trade Center Catastrophe,” by Harrit and coauthors, is a PDF published in The Open Chemical Physics Journal, 2009, volume 2, pages 7–31. Its original-host link is https://www.benthamopen.com/contents/pdf/TOCPJ/TOCPJ-2-7.pdf. The captured 25-page Bentham Open publisher PDF’s bibliographic, abstract, provenance and conclusion passages were reviewed. For the authors’ attributed interpretation that red/gray chips are active thermitic material, it names optical microscopy, SEM, XEDS and DSC. This register reports that claim without validating figures, controls, methods or any collapse cause. The authors say the earliest sample was not mixed with WTC 7 dust. [4]
What has not been restored
The four entries above point to publisher originals, not restored BuildingWhat downloads. The reviewed record contains no authenticated restoration of an original BuildingWhat PDF or media file pack. A legacy PDF or media redirect is not the original file. This register makes no claim that an unavailable historical original has been restored here; such an item may exist or become available elsewhere, and publisher availability can change. It hosts no mirrors and offers no generated worksheet download. Nor does a summary or campaign account become an authenticated original through listing.