The basement of 4 World Trade Center housed vaults used to store gold and silver bullion. Published articles about precious metals recovered from the World Trade Center ruins in the aftermath of the attack mention less than $300 million worth of gold. All such reports appear to refer to a removal operation conducted in late October of 2001. On Nov. 1, Mayor Rudolph Giuliani announced that "more than $230 million" worth of gold and silver bars that had been stored in a bomb-proof vault had been recovered. A New York Times article contained:

https://www.911research.wtc7.net/wtc/evidence/gold.html

https://www.911research.wtc7.net/wtc/evidence/gold.html