https://www.stlouisfed.org/open-vault/2023/apr/peek-inside-our-vault Created Wed, 26/04/2023 - 19:30 Updated Wed, 26/04/2023 - 19:30 Take a look inside the St. Louis Fed's cash vault, home to the processing of nearly one billion currency notes a year. The vault door, weighing 90,000 pounds, safeguards deposits.