Changes were made in the areas of business development, technology and conservancy areas.

"Rick Navarre has spearheaded accretive acquisitions in three countries in recent years. He will expand his duties to direct our growth opportunities in the United States and overseas, including the fast-growing China and India markets,” company chief Gregory Boyce said.

“Our generation development group will broaden its focus to include Btu conversion technologies such as coal gasification and liquefaction. And our team in charge of final reclamation will now report to Roger Walcott, who oversees our unmatched resource holdings."