Profit in Mallinckrodt

Every year at least 250 trusting students in Chem B dig their last dime from their wallets and put it through a myriad of chemical tortures. The final product is 250 little silver balls, worth 3 cents apiece being all the silver there ever was in the dimes. Then all this rich metal is handed docilely ever to the authorities, who realize about $300 every century on the deal.