Criminal gangs in China have been kidnapping mentally disabled people. The gangs take their kidnap victims to mining operations and murder them deep underground in ways to make them look like they died in mining accidents. Then the gangs pose as members of the victim’s family and demand compensation from the mine owner. If the mine is operating illegally, chances are that the owners will pay what the criminals demand to keep the incident hushed up.
While using mentally disabled people is a new wrinkle, these murders have been going on across China for about a decade. These deaths are over and above the estimated 20,000 that die each year in China’s mines.
Basically, the moral of this story is to stay far, far away from China’s mines, especially if you’re Chinese. There are many illegal operations that are kept going because of their connections to government officials.