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Charles H. Entrekin has served as our president and chief operating officer since January 2007. He served from 2003 to December 2006 as senior advisor to Safeguard International Fund, a private equity fund that specialized in investing in technology-oriented, industrial businesses in Western Europe and North America in the metallurgical, chemical, energy and environmental industries. As part of his duties with Safeguard, he served from 2003 to 2004 as managing director of London & Scandinavian Metallurgical Co. Ltd., a multi-location company engaged in primary and secondary metals manufacturing and from September 2005 to December 2006, as president and chief executive officer of Timminco Ltd. (TSX: TIM), an international producer and marketer of specialty magnesium and engineered magnesium extrusions, silicon metal and specialty ferrosilicon, calcium and strontium alloys. From 1983 to 2002, Dr. Entrekin held various positions of increasing responsibility with us, the last of which was executive vice president - commercial. | 