Intense Heat Persisted for Months
- Fires continued to burn deep in the rubble pile for 100 days,
despite the spraying of water onto the pile.
- When the rubble was cleared, pools of previously melted steel
were discovered at the foundations.
- Temperatures needed to melt steel (~1400ºC)
could not have been caused by residual hydrocarbon fires.
Usually one needs a blast furnace to melt steel.