A place for general chatter about games in progress, games completed, strategy advice, bug reports, or really anything at all that relates in some vague way to RSW.
There is no way to build new mines, though the mines produced by a world may very gradually increase during the game--in particular, as described at http://rswgame.com/help/turns_owned.htm, the mines production increases by 1 for each seven turns that you own a world continuously.