Resolution of mining threat to Skagit Headwaters,  but the threat of Canadian mines to American rivers remains

… Headwaters,  but the threat of Canadian mines to American rivers remains … third-largest copper mine in Canada. It features two leaky tailings … in recent years, and other native species have been negatively impacted …… Headwaters,  but the threat of Canadian mines to American rivers remains … third-largest copper mine in Canada. It features two leaky tailings … in recent years, and other native species have been negatively impacted …