[0n34n7]

The nice thing about this specific resource is that it is under water, negating many of the problems you mention.

[Renaud]

Maybe you meant to be sarcastic but being underwater doesn't negate any of the environmental concerns linked with pollution, treatment of by-products and their effect on the ecosystem.

[throwawaycanada]

If it is in the ocean that would be a disaster.

[bubblewrap]

Doesn't most pollution end up in the oceans, anyway? If mining pollutes rivers, those rivers spill into the ocean eventually.