This smokestack once emitted a plume of arsenic, lead and other heavy metals from Asarco's copper smelter othat polluted  1,000 square miles of Washington state's South Puget Sound. Peter Haley/Tacoma News Tribune/MCT
This smokestack once emitted a plume of arsenic, lead and other heavy metals from Asarco's copper smelter othat polluted 1,000 square miles of Washington state's South Puget Sound. Peter Haley/Tacoma News Tribune/MCT Peter Haley/Tacoma News Tribune/MCT
This smokestack once emitted a plume of arsenic, lead and other heavy metals from Asarco's copper smelter othat polluted 1,000 square miles of Washington state's South Puget Sound. Peter Haley/Tacoma News Tribune/MCT Peter Haley/Tacoma News Tribune/MCT

How Grupo Mexico tried to use U.S. law to avoid cleanup cost

December 27, 2009 12:01 AM

UPDATED December 28, 2009 08:44 AM

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