More evidence from BC that the proposed Transboundary Mines are a terrible idea…
Acid mine drainage from the Tulsequah Chief mine in northwest B.C. has worried and infuriated Southeast Alaskans for almost six decades and concerns have again peaked with a new analysis that claims a study of runoff — that found the drainage would not affect fish — was flawed.
The mine, situated beside the Tulsequah River, the largest tributary to the Taku, one of Alaska’s premium salmon rivers, was closed by Cominco in 1957 without reclamation or clean-up of acid mine drainage.The only consolation for those worried about the effect of toxic runoff on salmon, was a study, ordered by the province and conducted for Chieftain in 2013, that concluded that, although significant levels of copper and zinc were found downstream from the mine, the drainage posed a low risk to fish in the Tulsequah River and that the discharge did not affect the Taku River.
However, that study is now being questioned by a new analysis, conducted for Rivers Without Borders, that has found problems with the way information was collected.
Link (via DeSmog Canada)