In complete disregard of previous cost:benefit analysis studies that indicated that the sport and commercial value of the Bristol Bay salmon fishery far exceeded the total gold deposit estimated value over the mine's life, opposition due to water quality degredation by indigenous peoples communities downstream of the proposed site, as well as investor pushback during Rio Tinto's ownership:
https://www.cnn.com/2019/08/09/us/epa-alaska-pebble-mine-salmon-invs/index.html
https://www.cnn.com/2019/08/09/us/epa-alaska-pebble-mine-salmon-invs/index.html