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Terence Bell

Updated Articles and Resources

By Terence Bell

    Updated Articles and Resources
    • Copper Production Created: Saturday, December 29, 2012 Updated: Wednesday, April 16, 2014
      How is copper produced? Copper is typically extracted from oxide and sulfide ores that contain between 0.5 and 2.0 percent copper. The refining techniques employed by copper producers depend on the...
    • Platinum Group Metals (PGMs) Created: Sunday, November 13, 2011 Updated: Wednesday, April 16, 2014
      The PGMs are the densest known metal elements. Exceptionally rare, the six metals naturally occur in the same ore bodies. They are highly durable and, due to their high value, often recycled, givin...
    • Steel History Created: Saturday, January 14, 2012 Updated: Tuesday, April 15, 2014
      By the 17th century, iron's properties were well understood, but increasing urbanization in Europe demanded a more versatile structural metal." itemprop="description" Thursday, October 06, 2011 Updated: Tuesday, April 15, 2014
      Tin is a soft, silvery-white metal that is very light and easy to melt. Being so soft, tin is rarely used as a pure metal." itemprop="description">