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Has anyone seen the show (I think it is just called "Metal(s)" on the History Channel. There is one part where they mention Molybdenum as a potential additive (3%) to steel in order to make it more higher strength in high-temperature situations. The example they pointed out was the World Trade Center. Even if the fire retardant would have come off the steel, a higher-temp resistant steel alloy with added Molybdenum (I forget the other additive they mention) would have been sufficient to give enough static strength so that it could have remained standing.

Will be interesting to see if this becomes more commonplace in extreme skyscrapers such as the new ones in Chicago/Dubai, etc. If it becomes a standard, the demand for Molybdenum will remain high.
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