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Kennecott Minerals Company, headquartered in Salt Lake City, Utah, develops, manages,
operates and participates in gold, silver, zinc and other base metal operations in the
United States. For additional information about Kennecott Minerals Company, please go
to: www.kennecottminerals.com or send requests to:

KMC Headquarters
224 North 2200 West
Salt Lake City, Utah 84116

Kennecott Minerals Company is a wholly owned subsidiary of London-based Rio Tinto
plc, one of the world’s premier mining companies. For information about Rio Tinto,
please go to: www.riotinto.com.