W. HERBERT HUNT

$2.6

BILLION  SELF-MADE SCORE: $ SOURCE: OIL AGE: 90 RESIDENCE: DALLAS PHILANTHROPY SCORE: One of oil wildcatter H.L. Hunt’s 15 children, he and his brother Nelson discovered the Sarir Field in Libya, one of the largest oilfields on the African continent, in 1961. The brothers then made a massive bet on silver that imploded, causing them to file for personal bankruptcy in 1988. Hunt has been back in The Forbes 400 ranks since 2013, after selling oilfields worth $1.5 billion. He remains an advisor to Petro-Hunt, which picked up land and operating wells in North Dakota’s Williston Basin in 2018.