Harold Hamm & family

Harold Glenn Hamm (born December 11, 1945) is an American business magnate in the oil and gas business. He is known for pioneering fracking of shale oil resources. As of February 4, 2022, Hamm's net worth is estimated to be US$18.5 billion, making him the 63rd wealthiest person in the world. He is the founder and chairman of Continental Resources. In 2012, presidential candidate Mitt Romney named Hamm as his energy advisor, and Hamm was a donor to the Romney campaign. Hamm was a fundraiser an... source: https://en.wikipedia.org/wiki/Harold_Hamm