Darwin Stark has over 40 years of experience operating heavy equipment such as loaders, dozers, excavators, and shovels. He has an exemplary safety record of perfect attendance and no lost-time accidents over 11 years operating equipment. Stark established a program at the North Antelope Rochelle Mine that increased safety, efficiency and production, helping his crew outproduce three others and mine over 1 million additional tons of coal in one year. He holds the world record for mining 48,000 tons of coal in a single 12-hour shift using a Letourneau loader.