A water treatment plant at the Tulsequah Chief Mine project in British Columbia has been shut down.
Mine owners Chieftain Metals shut off the plant on June 22. The company says it cannot continue spending money on water treatment without any mine income.
Acid Rock Drainage downstream of the mine has long been a concern of Alaskans, though a recent study shows metals concentration remains insignificant in some Taku River fish.
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Rosemarie Alexander is a reporter at KTOO in Juneau.
