Three systems

Here's some refinement work on the MINE logo. I've adjusted one of the logo marks, it's not a tree anymore! I've also introduced the colors to be a bit more vibrant, rather than muted tones. I think the grey/blue one speaks to the underground nature. It won't get old which I think is good. The orange is really fun, lots of options there and maybe that won't get old either. The green/brown is really positive and full of energy!