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

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. Image: Our contact, M, says the government doesn’t know about his site – yet “We don’t know…