Harold Hamm

Harold Glenn Hamm (born December 11, 1945) is an American entrepreneur. He is best known for he development of the large shale oil resources of the Bakken formation.
As of January 2018, Hamm's net worth is said to be $14.2 billion, making him the 79th richest person in the United States.
In 2012, presidential candidate Mitt Romney named Hamm as his energy advisor.
In 2016, then-Republican presidential nominee Donald Trump was thinking about making Hamm United States Secretary of Energy.