Graders, these are useful for pushing material around. So they can push material from a digging area into a dumping area. Must be within the same mining area.
Semi Permeant mining equipment. Those massive mining machines they have that giant wheel on them for mining coal would be really cool.
Ocean mining equipment/dredges Would be nice to be able to mine away the edges of the island.
I should by add some of machine for research. This machines should by increase by another research as well mining yield per square. But for this machine should by limit high of yielding and not should by yield lower like it is stay mashine. Machine could by move just on flat surface not angle surface.
So for high yield per 1 square some limitations. And this way we can get maps with smaller area of ores.