| http://www.w3.org/ns/prov#value | - Underwriters Laboratory had certified the steel used in the World Trade Center to 2,000?? F for up to six hours.38 Even lower maximum temperatures result after factoring in insulation, such as asbestos, and the availability of oxygen.39 Since steel is a good conductor, any heat applied to one part of the structure would have been dissipated to other parts.
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