Big Miners inspired on Total Annihilation metal extractors models, adds 3 tiers of massive miners that can mine entire ore spawns.
Last update: 0.18.1 - Small Fixes/changes.
Currently miners don't produce any pollution. I don't remember exactly when was property "emissions" replaced by "emissions_per_minute" but due to that change, these gigantic miners are currently 100% eco-friendly :D