The 1975 World Trade Center Fire that Burned for 3 Hours
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Because the twin towers were owned and operated by the Port Authority of New York and New Jersey, they were not subject to local safety codes; therefore, did not have an installed sprinkler system, nor did they have fire-stopper materials in gaps around the telephone cables within the cable shaft that would've stopped the blaze from spreading to other floors
"It was like fighting a blow torch" - Captain Harold Kull of Engine Co.The fire department arrived to find a very intense fire that had spread from the 9th to the 19th floor. The only occupants of the building at the time were cleaning and service personnel. Fortunately, they were all evacuated without any serious injury or fatalities. However, of the 125 firemen fighting this fire, 28 sustained injuries from the intense heat and smoke. The cause of the fire was and is, to this day, unknown.
The loss was estimated at over $2,000,000.
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So, let me get this straight. This intense fire that burned for more than three hours caused no serious structural damage at all. They didn't even have to replace the trusses!
Yet, the twin towers, after burning for a little more than an hour, practically vaporized, while collapsing at free-fall speed, through what should have been the path of greatest resistance – thousands of tons of steel. It was as if the steel structure from the ground up to the floor where the fire was burning, didn't exist.
Granted, jet fuel may burn a little hotter; however, the jet fuel probably burned off in the first 10 minutes after the planes crashed in the towers, not to mention, these buildings didn't just collapse, they were reduced to pulverized concrete powder.
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