The multinational company that operates the massive Red Dog Mine in Northwest Alaska says that thawing permafrost linked to global warming has forced it to spend nearly $20 million to manage its water storage and discharge.
The problems at Red Dog, one of the world’s largest zinc mines, show how climate change poses a challenge not just to residents of Arctic Alaska, but also to the economy of the region, which is warming at triple the rate of the global average.
Vancouver-based Teck Resources Ltd. says that permafrost thaw in the watershed surrounding Red Dog is releasing higher natural levels of dissolved minerals and other particles into streams.