Mining was the process of removing valuable materials from beneath the ground.
In the early 22nd century, Dom Issigri founded the Issigri Mining Company. (TV: The Space Pirates) By the end of the same century, it was renamed the Interplanetary Mining Corporation, or IMC for short. (PROSE: The Menagerie)
Killingworth was an English village that relied heavily on mining during the 19th century. The Rani once visited the village and experimented on the miners, causing them to become increasingly violent. (TV: The Mark of the Rani)