There is no such adequate equipment. The most adequate electric trucks are way too small. And electric version of various other heavy grinding machines just d

There is no such adequate equipment. The most adequate electric trucks are way too small. And electric version of various other heavy grinding machines just doesn't exist, AFAIK not even as prototypes. Moreover providing massive amounts of electricity in such remote locations, and also delivering it locally (power cables everywhere in a mine shock-full of heavy equipment? What could go wrong?), is a major challenge. If it's easy for you, then providing all this will quickly get you rich.