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4204 The Mine is a 2012 City Mining set. The set includes a gold mine with six golden crystals, a drilling machine, a green transport truck, a crane and a small mine car. The set also contains many mining accessories, including rocks, dynamite, and tools. Also included are the Crew Chief, the Truck Driver, the Crane Driver and the Driller, all of which have a new mining helmet piece. It contains 748 pieces.
- The set was previewed in a Forest (City) mini-movie Gold Run along side 4200 Mining 4x4, 4201 Loader and Tipper and 4202 Mining Truck.