Appeals court rules against Teck Cominco

A U.S. appeals court ruled July 3 that a lawsuit can proceed against Canadian mining company Teck Cominco Metals Ltd. over the release of hazardous waste in Canada that reached the United States.

Teck Cominco, the world's biggest zinc producer, had argued the lawsuit should be dismissed because U.S. environmental laws don't apply to a Canadian company that dumped waste in Canada.

The lawsuit was f...