Dan Rudy/ Wrangell Sentinel

More than 90 marchers bear signs and show support for the Stikine River in Wrangell during a rally Sunday, which marked the first anniversary of a tailings dam failure at the Mount Polley mine in British Columbia. On Aug. 4, 2014, the containment wall ruptured and released 13.8 million cubic yards of metals-tainted water into the nearby Fraser River system, disrupting fishing there for two seasons.