Reuters: Canadian diversified miner Teck Resources Ltd is investigating another spill at its Trail smelting complex in British Columbia, but said on Sunday it does not expect the incident to have a long-term impact on fish or the environment. Up to 25 cubic meters (883 cubic feet) of a solution containing some sodium hydroxide was released into a sewer line on Tuesday, Teck said in a statement. The sewer leads to a treatment plant that discharges into the Columbia River. Sodium hydroxide is a corrosive...