They are the physical engines of America's money machine, secretive agencies that design and manufacture the greenbacks that keep the nation's and the world's economy moving. This episode ventures inside these vital fortresses for a privileged glimps... (more)e of the work of making money. From engraving to circulation, watch as fortunes are created in instants, and see how new bills are put into circulation. Hear from Philip N. Diehl, Director of the United States Mint, and Robert Chandler, a historian for Wells Fargo, as they trace the fascinating history of the government's money business. And discover what the future may hold for American currency.