Billionaire oil tycoon Harold Hamm gives $150 million to study the disease he has
Harold Hamm has given the University of Oklahoma $150 million, the largest gift in its history, to fund healthcare and diabetes research.
Harold Hamm
Billionaire Harold Hamm launches a multibillion-dollar plan to drill Argentine shale
The US oil billionaire's Continental Resources is buying half of Phoenix Global Resources and plans to invest $4 billion drilling Argentina's Vaca Muerta shale formation.