Sources

Post-Gazette.com, a service of the Pittsburgh Post-Gazette, March 16, 2006, A Red- Hot Desire
CNNMoney.com, August 18, 2006 World's Largest copper mine closes for strike
EETimes.com, August 22, 2006, Copper Prices soar amid labor dispute
www.equinoxminerals.com, date unknown, Why Copper?