Deep within one of Jupiter's many moons lies an enormous mining complex known simply as Great Dane Complex 13. Its primary export is Ganymedite ore - a wondrous glowing mineral first discovered on the moon Ganymede and used in many high-tech applications -- such as room-temperature superconductors and quantum computers, both integral to modern interplanetary travel. Operated by the Great Dane Mining Company, Complex 13 has been diligently churning out vast quantities of Ganymedite ore for decades.
Unfortunately, the company tends to neglect to inform their employees of the effects of overexposure to raw Ganymedite -- hallucinations, paranoid delusions, and violent psychosis.
Oh well. Out here beyond the Belt, there's no shortage of cheap, expendable outworlders looking for three hots and a cot. If they go crazy, that's what the armed guards are for.
Let's just hope the guards don't start going nuts, too...