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)
In their era in which the Dalek race was confined to the Dalek City, they mined the area beneath their city, leading out from its incubation level, with the end goal of creating a network of tunnels across Skaro's underground. Observing this, both the First Doctor and Tryana noted that the Daleks had "a talent for mining and drilling". (AUDIO: Return to Skaro) In their invasion of Earth in its 22nd century, they set up a mining operation in Bedfordshire in their attempt to fulfill Project Degravitate. (TV: The Dalek Invasion of Earth)