The Supreme Court of British Columbia granted an injunction at the request of the Xatśūll First Nation, halting Mount Polley's expansion of its tailings storage facility. The legal action follows longstanding environmental concerns and a history of contamination from the 2014 spill, highlighting the company's problematic expansion plans which ignored indigenous rights and environmental safety.

On May 9, 2025, the Supreme Court of British Columbia granted an injunction at the request of Xatśūll First Nation, halting Mount Polley Mining Corporation’s proposed expansion of its tailings storage facility. The injunction was granted amid concerns over environmental protection, indigenous rights, and lack of proper consultation regarding the mine’s expansion.

The B.C. Supreme Court ordered Mount Polley Mining Corporation to cease depositing tailings into an expanding dam, a project contested by the Xatsull First Nation over inadequate environmental assessment and consultation. The injunction, issued on May 9, 2025, comes amid the company’s push to continue construction to avoid delaying the season, a move that threatens to cause layoffs of around 255 unionized workers and raises concerns over prioritizing economic gains over environmental safety and indigenous rights.

Xatśūll First Nation has initiated a judicial review against the province and Mount Polley Mining Corporation over plans to raise the dam height at the tailings storage facility. The challenge argues that the expansion, which includes an additional 13-metre dam raise and pit expansion, was approved without the legally required environmental assessment and proper consultation with Indigenous communities, jeopardizing Indigenous rights and environmental safety.

On April 15, 2025, Xatśūll First Nation filed a judicial review against British Columbia's approval of the Mount Polley mine tailings dam expansion. The review challenges the lack of environmental assessment and failure to secure Indigenous free, prior, and informed consent, while Mount Polley Mining Corporation has signalled its intent to further raise the dam. This development raises serious concerns about corporate responsibility and respect for Indigenous rights.

Charges have been brought against Mount Polley Mining Corporation along with other companies in connection with the 2014 tailings pond breach at the Mount Polley Mine. A total of 15 charges have been laid under the federal Fisheries Act, highlighting significant lapses in environmental management and regulatory compliance.

The B.C. Labour Relations Board ruled on July 10 that Mount Polley Mining Corporation must pay wages to 26 employees who were laid off without the required 60-day notice. This decision, made amidst an ongoing labour dispute and strike action, underscores serious breaches of worker rights and the company's failure to adhere to labor protections.

On August 4, 2014, the failure of the Mount Polley mine tailings pond resulted in a massive environmental disaster that undermined the human rights of local communities and Indigenous peoples. The incident highlighted severe deficiencies in the company’s business practices and ethical responsibility, as well as systemic issues related to regulatory capture in British Columbia’s mining sector, with the company failing to engage with stakeholders or address the harms.