How the spring thaw influences arsenic levels in lakes

PHYSorg
Feb 9, 2026, 1:40 pm65 ptsTrending
From 1948 to 1953, a gold mine called Giant Mine released about 5 tons of arsenic trioxide per day into the environment around Yellowknife, Northwest Territories, Canada. Emissions declined from the 1950s until the mine closed in 2004, but the surrounding landscape remains highly contaminated with arsenic.

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