359. William Young
$2.2 billion Self-made Score: * Source: plastics
age: 76 residence: Ypsilanti, mich. B.S., u. of detroit mercy ’64
Half a century after Young and his father cofounded plastics-container maker Plastipak, he’s still president and CEO of the $2.7 billion (sales) firm, whose customers have included Pepsico and Kraft Foods.