The Oreburgh Mine (Japanese: クロガネたんこうKurogane Mine) is located in Oreburgh City and operated by Roark. It is one of the main features in the city, as well as the city's leading energy source. In order to battle Roark, the first Gym Leader of Sinnoh, the player must explore the mine and find him. After finding him, he will show the player how to use Rock Smash and then finally leave to go back to his Gym.
The Oreburgh Mine is one of the main features in the city, as well as the city's leading energy source. It is the livelihood of the town. Vents in the town allow steam to escape and fresh air to enter the mine, likely also clearing the mine of any poison gas (which is historically the bane of coal miners). The mine is operated with the utmost care to avoid causing damage to the natural habitats of wild Pokémon. The system of taking coal out of the mine is automated. Roark lets Trainers from the town train their Pokémon in the mine. The mine itself extends not only under the town, but the seafloor as well. All of the miners have their own Pokémon, usually Machop, to assist them in the mine.
The first part of the cave is the entrance where there is a stairwell that will gradually make its way down to the underground cavern. There are steel drums and crates located around the area, as well as a small conveyor belt, that, in Pokémon Platinum extends to the undersea floor.
The sub floor, which contains a large piece of slab in the middle, is more complex. There are a few workers digging at the slab, but there are some who are training their Pokémon and are eager for a battle. There are two ways of getting around the slab, but only by traveling counter-clockwise can a player make a full rotation around the slab, as there is a small ledge blocking the path. There are a couple of crates located on this floor as well.
The Oreburgh Mine was first mentioned in Shapes of Things to Come! by Ian, who informed Ash and his friends that Roark was coal-mining and exploring for hidden treasures. According to Brock, the coals in Oreburgh City are one of the richest in the world. Later, Ash and his friends arrived at the mine looking for Roark. Team Rocket were also at the mine in disguise and pretending to dig for coal. When the company meet Roark, it is revealed that he is the foreman of the miners.
Oreburgh Mine reappeared in Wild in the Streets!, where Ash was training his Pokémon against coal ore pillars after his loss to Roark the day before. At the same time, Team Rocket revived Armaldo, Kabutops, and Aerodactyl from the revival machines they had stolen. Eventually, Officer Jenny and the scientists cornered Armaldo and Kabutops at the Oreburgh Mine. Team Rocket and Aerodactyl also showed up at the mine. Ultimately, Team Rocket was defeated and the Pokémon were caught.
The Mine appeared again in Ancient Family Matters! in two flashbacks. In the first flashback, it was revealed that Roark's dad, Byron, had left him as the Oreburgh Gym leader just as Roark was being assigned to lead the Ancient Pokémon Excavation Operations at the Oreburgh Mine. The second flashback showed Roark as a child, showing his father a Fossil of a Sunkern leaf at the Oreburgh Mine.
In the manga
The Oreburgh Mine in Pokémon Adventures
In the Pokémon Adventures manga
The Oreburgh Mine first appeared in Putting a Crimp in Kricketot, where Platinum wandered there by herself after being attracted to a song being played from inside, which turned out to be caused by a group of wild Kricketot and Kricketune. Although Platinum's Piplup managed to defeat many of them, she was eventually overcome by their sheer numbers, and a local Worker suggested that Platinum should challenge Roark, the local Gym Leader, in order to help restore Piplup's confidence.