For these magnet fishers, the payoff is greater than the hunt for treasure

Treasure Hunting / recovery

Magnet fishing - Wikipedia

Treasure Hunting / recovery

Magnet fishing in Wisconsin: A slimy hunt for hidden treasure

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How a three-decade search for S.S. Pacific's shipwreck brought a golden payoff to treasure hunters - The Globe and Mail

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Magnet Fishers Pull Trash, and Treasure, From the Depths Below - The New York Times