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Page 5 of 5 <br />* History: Mine first started output in 1918, during World War I. <br />* What is molybdenum? A metal for hardening steel. <br />Subscribe to the Rocky Mountain News <br />Comments <br />Deb Frazier <br />Communications Director <br />Colorado Department of Natural Resources <br />(303) 866-5887 <br />Cell: (303) 514-8920 <br />deb.frazier@state.co.us <br />12/5/2007 <br />