Mines spiritually suggest the ability to ‘mine’, or learn from the emerging unconscious.
Psychological / emotional perspective: The word ‘mine’ initially signified crude ore and has since come to mean the place from which crude ore is taken. In this sense dreaming of a mine suggests prospecting for crude material, which can be refined, whether that is raw emotion or unexpressed feelings. This is also one of those symbols that can actually be a wordplay.
The objects in the dream are ‘mine’. Dreaming of a miner is that part of us that is prepared to explore and use the crude material.
Material aspects: Dreaming of mines signifies bringing the resources of the unconscious into the light of day. We are able to use the potential we have available. Interestingly in dreams mines can also represent the workplace. You might also like to consult the entries for digging / excavation and metal.