On Tue, Mar 26, 2013 at 10:58 AM, Jed Rothwell <jedrothw...@gmail.com> wrote:
> The problem is cost. It is expensive mining the sea bed at these depths. > Maybe it will get cheaper if they scale it up. According to the article cited by Dr. Cravens: "Although it is very deep, the deposits are in highly-concentrated nodules that can be extracted using pressurised air with minimal disturbance off the seafloor and no need for the leaching."
