Hey Wes, good luck with your underground mine....you may win points with the wacko environmentalists, but from a practical point, you are going to lose....
I happened to be flying and sitting next to a pump technician, who maintains the water pumps at the Vector Mine....and Debeers is crying over the electrical power costs to pump the water out of their open pit....can imangine the costs and effort to dewater a underground mine.....