The US interagency Eizenstat Report (1997; 11 agencies, 15M+ pages reviewed, ~1M newly declassified) found that gold looted from occupied states and victims was smelted into bars and converted, mostly through the Swiss National Bank, into currency the Reich used to buy war materiel from neutral countries. Switzerland's own Bergier Commission (1998 gold report), working from Swiss National Bank and private-bank ledgers, estimated the SNB received $440M of Nazi gold. Eizenstat noted there's no evidence the SNB knew some of it came from Holocaust victims. It's one of the few cases where two governments' archives corroborate each other.