By jdubble07
(2020-06-01)Robert Hefner III is the grandson of the late Robert Hefner Sr, a geologist known as "the Father of Deep Natural Gas" and founder of GHK Company, a natual gas exploration firm.
Robert Hefner III is the grandson of the late Robert Hefner Sr, a geologist known as "the Father of Deep Natural Gas" and founder of GHK Company, a natual gas exploration firm.