This Tuesday, Aug. 5, 2014 aerial photo shows the damage caused by a tailings pond breach at the Mt. Polley Mine in British Columbia. It sent 6.6 billion gallons of toxic mine waste and waste water into one of the province’s great salmon spawning streams. (AP Photo/The Canadian Press, Jonathan Hayward) Local officials and salmon boat operators in Southeast Alaska aren’t comforted by a British Columbia report on causes of a massive B.C.