once 2.1.x drops do not expect new 2.0.x mods here, mods will be slowly ported based on my needs and/or requests from the community, thx for playing!
It is really hard to spot on vulcanus what are decorative rocks and what is coal, especially with that dark background.
This mod will show you which ore plots are under a drill, within drill range, as well as outside, when you hold a miner.
(just look at the thumbnail, there are 4 tiles of coal, do you notice which ones? hint: the top two are just decorations)