Melting Point [of construction steel]: 1535.0 °C (1808.15 K, 2795.0 °F)

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FEMA itself said that temperatures inside the WTC towers reached 1700-2000 degrees Fahrenheit

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But we need to return to the laws of physics once again, for after each airliner crashed into the WTC towers, the great explosions consumed most of the jet fuel within minutes. In a report entitled Jet Fuel: How Hot Did It Heat the World Trade Center that was posted on Hawaii Indymedia, we find this scientific observation: "The time to consume the jet fuel can be reasonably computed. At the upper bound, if one assumes that all 10,000 gallons of fuel were evenly spread across a single building floor, it would form a pool that would be consumed by the fire in less than five minutes."

Of course, other items were also burning, including the cabinets, carpets, walls, paper, and furniture inside the WTC towers. But even then, if all of these items burned with perfect efficiency, the temperature could still not reach that needed to melt steel. Try it sometime. Plus, after the initial blaze, we could see on TV that by 9:03 am – only eighteen minutes after the first tower was struck – most of the fire was reduced to black smoke, thus meaning that it was starved for oxygen and was by now just a smoldering, low-temperature fire – not a continual rip-roaring blaze. What this obviously implies is that liquid fuel doesn't burn hot for long, and it evaporates or boils as it burns.

So, two huge questions remain: (1) what actually made this construction-grade steel melt when it obviously wasn't jet fuel, and (2) how could the South Tower collapse in just 47 minutes – half the time it took for the North Tower to come down – when it had a much smaller fire? Maybe the 9-11 Commission should start finding answers for these questions.