A mine was a place where mining was done.
During their invasion and occupation of the Earth, the Daleks set up a mine in Bedfordshire and used slaves to mine to the magnetic core of the planet. The Daleks planned to replace the core with a propulsion system, so the Earth would act as a gigantic spacecraft. (TV: The Dalek Invasion of Earth)
On a human colony, the Macra forced the colonists to mine the gas they required to survive. (TV: The Macra Terror)
On the planet Ta, the Issigri Mining Corporation mined the valuable mineral argonite. (TV: The Space Pirates)
Thaesium was mined on the planet Solos, but by the 30th century the mines were disused and they were inhabited by "Mutts". (TV: The Mutants)
Chemical waste from Global Chemicals was deposited into a nearby mine in Llanfairfach, Wales, leading to the creation of giant maggots. (TV: The Green Death)
Much of the technology of the Galactic Federation was based on trisilicate. One of the main sources were the mines on Peladon. (TV: The Monster of Peladon)
The gold mines on Voga supplied much of the gold dust used for glitterguns during the Cyber-Wars. (TV: Revenge of the Cybermen)
Storm mines were used on the planet Kaldor to mine certain minerals as lucanol and keefan. (TV: The Robots of Death)
Lady Adrasta owned the only mine on the planet Chloris. (TV: The Creature from the Pit)
Terileptil prisoners worked in the tinclavic mines on Raaga. (TV: The Visitation)
When the Northcrawl Copper Mine on Androzani Major started overproducing, Morgus hired a man to destroy it, eliminating the problem. (TV: The Caves of Androzani)
The Daleks forced many species, including humans, to work in the mines in Arkheon, Skaro and Nixyce VII. (TV: Destiny of the Daleks, PROSE: Prisoner of the Daleks, AUDIO: The Traitor)
Captain Cook visited the gold mines on Katakiki. (TV: The Greatest Show in the Galaxy)