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B.C. judge grants injunction in legal battle over tailings dam at Mount Polley mine

On May 8, 2025, Justice Gary Weatherill presided over an interim injunction hearing brought by the Xatsull First Nation challenging the approval of a four-metre raise to the Mount Polley tailings storage facility in British Columbia.
The application contesting provincial approval for a four-meter increase to the tailings storage dam was heard by the court, which postponed further proceedings until a hearing scheduled for June 24.
Imperial Metals and its subsidiary Mount Polley Mining Corporation continue normal mine operations and construction of the dam raise, while not needing to use the raise before July 1, 2025.
Imperial denies that any injunction was granted, noting multiple third parties incorrectly reported a stop order on the tailings dam construction at Mount Polley.
The court’s scheduled hearing and temporary limit on tailings deposits aim to allow a full judicial review, while the Xatsull First Nation seeks to prevent further environmental harm until then.

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Judge orders limit in Mount Polley tailings dam deposits amid court challenge

The B.C. Supreme Court has ordered that the Mount Polley mine limit the tailings it deposits into its storage facility while a First Nation challenges an addition to the dam.

1 year ago·Toronto, Canada

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Moose Jaw Today

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B.C. judge orders limit in tailings dam deposits at Mount Polley mine

VANCOUVER — The Supreme Court in British Columbia has ordered that the Mount Polley mine limit the tailings it can deposit into its storage facility while a First Nation challenges an addition to the dam in court.

1 year ago

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CBC News

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Mount Polley mine agrees to limit tailings dam deposits while court challenge heard

The Mount Polley mine has agreed in a B.C. Supreme Court to limit the tailings it can deposit into its storage facility, while the Xatsull First Nation challenges an addition to the dam.

1 year ago·Canada

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CTV News

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B.C. judge grants injunction in legal battle over tailings dam at Mount Polley mine

The Supreme Court in British Columbia has ordered a pause of operations at a wastewater storage facility at the Mount Polley mine as an addition to the dam is challenged by a local First Nation.

1 year ago·Canada

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