Illustrated history of the United States mint / with a complete description of American coinage, from the earliest period to the present time

by Unknown

Annealing Furnaces.

These are in the same room, to the right facing the rollers. The gold and strips are placed in copper canisters, and then placed in the furnaces and heated to a red heat; silver strips being laid loosely in the furnace. When they become soft and pliable, they are taken out and allowed to cool slowly.