You have gotten off to a good start.
Only coins are made at the Mint. Paper currency is printed at the Bureau of Engraving and Printing. The Mint was established in 1792 in Philadelphia. The main branch of the Mint still exists there today.
As you travel down the hallway in the Mint, you reach an end in a corridor that has an elevator. As you step into the elevator you may only go to the first floor.
As you walk off the elevator, you step out onto a factory floor that contains massive rolls of metal. The rolls are called coils and the metal in the coils will eventually become coins. The coils are purchased from a private company. Will the next step involve unwinding the metal for coin production or should the coils be weighed first?