"1952Z"^^ . . . . "110px|center|alt=Oval shaped shoulder patch with a deep blue background. At the top is a red circle and blue star, the patch of the Army Service Forces. It is surrounded by a white oval, representing a mushroom cloud. Below it is a white lightning bolt cracking a yellow circle, representing an atom." . . . . "1952-10-03Z"^^ . "Tube Alloys was a codename of the clandestine research and development programme, authorised by the Government of the United Kingdom with participation from Canada, aiming to develop nuclear weapons for the United Kingdom's nuclear weapons programme during the Second World War."@en . . . "1942Z"^^ . . . "Tube Alloys"@en .