264. James Leprino
$3 billion % self-made score: source: Mozzarella cheese age: 79 residence: indian Hills, colo. high school diploma After graduating from a Catholic high school, Leprino started helping his father at their family’s Italian corner store, shaping mozzarella balls by hand and making fresh ricotta. He often hung out in local pizzerias and realized the industry was about to take off, so he persuaded his dad to focus solely on pizza cheese. He hired a master cheesemaker and embraced technological advances to fit the needs of the fast-growing takeout and delivery pizza industry. Today his $3 billion (sales) Leprino Foods is the world’s largest mozzarella maker and the exclusive cheese supplier to Domino’s, Papa John’s and Pizza Hut.