The proposed mine will be located at the headwaters of the Bristol Bay watershed – home to the world’s largest wild sockeye salmon fishery. A scientist’s report predicts negative impacts should the mine proceed.
Additionally, as the adjacent map published by the Renewable Resources Coalition and Trout Unlimited shows, the proposed mine will eliminate important salmon spawning habitat in the Bristol Bay watershed. (Click the map for full size pdf version).
North America’s largest copper-gold mine? Here’s the latest report on copper’s harmful affects to salmon - including its ability to “smell”, which is crucial to successful spawning.

Scientists have researched water pollution at modern mines across the west. Their report found that:
76% of the mines studied caused water pollution – even though they predicted that water would be protected.
85% of mines near surface water with elevated potential for acid drainage — like the Pebble Mine proposal — caused water pollution
Mitigation measures predicted to prevent water pollution failed at 64% of the studied mines.
Water rights applications filed by Northern Dynasty would dewater streams and eliminate salmon habitat.