Shares were up more than 5% after the firm posted higher output across all divisions, except for copper, and said market conditions for its diamond business had improved.
When Nevada became a state in 1864, an estimated 60 million acres were available for mineral entry in Nevada, of that total 16 million acres have been withdrawn.
He envisions people living in big glass-carbon fiber domes on the surface, with additional areas mined out below the surface by robots for "industrial" uses.