Interesting. And something I'd never really thought of before.
Really, instead of letting the oil and other hazardous substances escape to the environment there's two beneficial strategies here. One, as Papa Smurf points out, is pollution prevention but in this world of ever-depleting resources we should also be thinking about exploiting those resources in the face of virgin material use.
I'd be really interested to learn what other haz substances are sitting down on the ocean floor that we actually do know about. The u-boat carrying mercury will be familiar to most folks who frequent these pages but what else is lurking down there?
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