[elil17]

I don't think it's true that both will be used at once - if deep sea mining is cheap enough, it could make surface mining non-viable. A carbon tax could certainly eliminate surface mining because smelting surface minerals uses so much more energy compared to smelting nodules.

We actually put much more funding into e-waste recycling. Allseas most recent funding round was $150m, and they're the only major player in the deep sea mining space. But Redwood materials, one of many e-waste recycling startups, has raised $700m in their most recent round.