Technology opens promise, perils of ocean mining

(AP) -- There's gold in that thar sea floor. Silver, copper, zinc and lead, too. The problem is, it's a mile or two underwater and encased in massive mineral deposits that layer a dark, mysterious world.

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<p><a href="http://www.physorg.com/news157815293.html">Technology opens promise, perils of ocean mining</a></p> <p>(AP) -- There's gold in that thar sea floor. Silver, copper, zinc and lead, too. The problem is, it's a mile or two underwater and encased in massive mineral deposits that layer a dark, mysterious world.</p>