^Lippert, John (12 أكتوبر 2010). "New King Coal". Bloomberg Markets Magazine. Bloomberg L.P. مؤرشف من الأصل في 2017-02-14. اطلع عليه بتاريخ 2011-06-23. Chris Cline became a billionaire by betting on a dirty fuel the world can't get enough of. With maps of 675 square miles of his Illinois mines before him, Chris Cline recalls the moment he knew the coal in those mines would be worth billions of dollars.
