Adds underground mines, randomly extracting ores that can be mined without fluid input. ORG by Optera, this deepmine is made independent of Optera's.
1.0.0 fully stable and updated to factorio version 1.0.
1.1.1 Angelsrefining integration added.
1.1.4 Darkstar_Utilities integration added.
1.1.5 minor crafting re-balancing, final tier unlocked at white science unless using Angelsrefining now gives chosen ore type only.