Bitcoin mining: China clamps down on booming trade where some can earn £60,000 a day

From the outside, it looks like the sort of huge industrial site typical of West China. A dry, dusty corner of the country where 3,000 people are at work. But beyond the security gates at the main entrance, behind a padlocked and guarded door, is something entirely different: a secret Bitcoin mining farm. “The government in China , they shut down some mining farms in Inner Mongolia already,” says the owner of the mine, who has asked to be referred to as M. “We don’t know what their next move is. So it’s better to keep low.” Does the government…