Michael J. Quillen

Michael J. Quillen has served as lead independent director since November 2020. Mr. Quillen is also a director of Martin Marietta Materials, Inc. In addition to his board involvement, Mr. Quillen manages Quillen Properties LLC and MJQ LLC and serves as an advisor on mining, energy, economic development, and transportation issues. Over the course of his career, Mr. Quillen has held several executive roles in the mining industry including chief executive officer and chairman of the board of Alpha Natural Resources, which he founded in 2002. Prior to Alpha, he was one of the founders of Whitehaven Coal Company where he was a member of the board and held senior leadership positions. Mr. Quillen served in a number of other senior roles including executive vice president of operations at American Metals & Coal International and president of coal sales at Pittston Coal Company. Mr. Quillen earned a Bachelor’s degree and a Master’s degree, both in civil engineering, from Virginia Polytechnic Institute and State University which awarded him the William H. Ruffner Medal, the university’s highest honor.