Kaja'mite

Kaja'mite is a strange ore with magical powers that is named after Mount Kajaro. Early in their history, the Goblins were forced to mine it by the jungle trolls of Kezan. However, its magic gave them great intelligence and the goblins overthrew the trolls. The goblin's capital city of Undermine was likely declared so because it was the mine that contained the vital kaja'mite. However, the supply of kaja'mite soon ran out. The goblins searched fruitlessly for more deposits of kaja'mite all over the world for thousands of years. Goblin intelligence peaked about 500 years before the First War, and has been declining ever since.

By goblin law, all Kaja'mite belongs to goblins.

Cataclysm
In Cataclysm, kaja'mite does not seems to be in short supply any longer.

A goblin player character starts out owning a kaja'mite mine called Kaja'mine with troll slaves as workers. The kaja'mite is turned into an idea-inducing beverage known as Kaja'Cola.

A kaja'mite mine is located on the Lost Isles and is mined by a group of intelligent monkeys. Some of the monkeys have been enslaved by mysterious Pygmy.