R.G. LeTourneau [La-turn-oh] was one of the most successful Christian businessman of all time. He was an inventor, entrepreneur and philanthropist - who gave away up to 90% of his income to spread the Gospel. So, how did a sixth grade dropout go on to have factories on 4 continents and have more than 300 patents to his name? We’ll find out as Mark LeTourneau shares his grandfather’s story.