Guardian: The unmarked white van at an isolated farm on the fringes of the Lake District National Park attracted no attention among locals. And when a metal tripod drill was spotted, it was presumed the farmer wanted to set up a water bore hole. But as a string of vans bearing the names of soil analysis companies and then a host of Portakabins turned up at the tiny hamlet of Kirksanton, questions began to be asked. When those living on the farm said they could not talk about it and …