Questions about water transportation and fishing on the island.
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fonixmunkee wrote: ↑Sat Mar 30, 2019 10:38 pm
What causes the mercury level to be so high in the lakes of Isle Royale? The old mines? Acid rain?
I once spoke to researchers who suspected the high mercury was from paper plants along the north shore (CN) of Superior.
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Any coal-burning power plant produces mercury. Once airborne, it can go along way.