"A giant machine that spits out $300 of ruby ore every time it is fueled with a coal ore."
The Industrial Ruby Mine is the first and the weakest of the 5 industrial mines. Industrial mines require coal to produce ores, and whenever a coal ore is put into the mine's input, an ore is produced.
- This and the Industrial Rainbow Mine are the only mines in the game that don't have an automatic version.
- This can get players some easy millions if used with a Cell Incinerator, similarly to an Industrial Diamond Mine.
- This is one of the only ruby items currently in Miner's Haven, the other being the Ruby Wall.