Teck Resources Limited, the Canadian mining company whose runoff water pollutes American waters in Montana and Idaho, is spinning off its sprawling complex of open-pit coal mines as a separate company ...

Key fish data prove invalid in flagging higher-than-allowed levels of selenium at Lake Koocanusa, representatives of Canadian coal miner Teck said last week at a meeting with Lincoln County ...

Mar. 18—If recent data from peamouth chub and other fish hold valid insight — and at least, biologists in Montana believe they do — selenium levels at Lake Koocanusa reach as high as 250% of what's ...