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Raymond D. Symens has served as a Senior Vice President of the Company since 1994. He served as Vice President Manufacturing from 1988 to 1994. From 1976 to 1988 Mr. Symens held various executive positions with Earth Sciences Incorporated and its wholly owned Canadian subsidiary, ESI Resources, Ltd., ultimately serving as Vice President and General Manager for the company’s chemical recovery operations located in western Canada. Mr. Symens received his B.S. degree in Metallurgical Engineering from the South Dakota School of Mines and Technology. | 