Gary S. Rivenes is Vice President, Operations of Rio Tinto Energy America, based in Gillette Wyoming. Mr. Rivenes is responsible for all Rio Tinto Energy America (RTEA) operating mines as well as the site-based technical and maintenance groups. Rio Tinto Energy America is one of America’s most efficient and affordable coal producers. As the nation’s foremost producer of low sulfur compliance coal, Rio Tinto Energy America can meet a wide variety of customer specifications and provide customer flexibility in

ordering, shipping and production demands. Rio Tinto Energy America, a major U.S. coal producer, is part of Rio Tinto Energy, a major producer of coal and uranium worldwide. Rio Tinto Energy is the global energy company of Rio Tinto, plc in London, which is a leader in finding, mining and processing the earth’s mineral resources.

Mr. Rivenes began his career with Rio Tinto Energy America in 1992 and has worked in the mining industry at several locations and within various disciplines with significant experience in engineering, production and mine management. Over the past 16 years, Gary has held such positions as Mining Engineer, Production Supervisor, Production Planner/Engineer, Operations Supervisor and Technical Services Manager at RTEA’s Antelope and Jacobs Ranch Mines and Rio Tinto's Colowyo Mine. Most recently, Mr. Rivenes held the position of General Manager at the Jacobs Ranch and Antelope Mines prior to his appointment as Vice President, Operations in RTEA’s corporate headquarters.

Mr. Rivenes holds a Bachelor of Science in Mining Engineering from Montana College of Mineral, Science &

Technology.