In the early days of the Cold War, in one of Russia's most secretive regions, stood a city without a name. There, at a classified military facility, an explosion occurred which was been kept hidden for more than two decades. During those long years no one knew of it except for the few who lived in the region of the catastrophy. This tragic story and the name of the top secret city are now known - it was near Chelyabinsk, and the factory where the explosion occurred - Mayak. The area was also known as Chelyabinsk-40. The city that produced...