Atomic Energy

L. Ya. Karpov and the UK's Secret Ledger on Soviet Atoms

Kept within the Ministry of Defence's registered files, the surveillance of a Soviet chemist reveals how British intelligence tracked the atomic potential of the Physico-Chemical Institute.

By Marcus Boone ·

The Nuclear Silence of DEFE 44/325

A technical intelligence report was scrubbed from the UK National Archives, leaving a bureaucratic void where the secret of a foreign nuclear capability once sat.

By Roy Castellano ·

Dr Karl Steimel and the Soviet Atomic Map

Filed alongside Soviet river lines and electronic nicknames, the technical assessment of one man remained locked in the Ministry of Defence archives for decades.

By Eleanor Voss ·

Ministry of Defence Masked Windscale Intel as UK MUSIC

Intelligence officers managed the dangers of Britain's early nuclear program under a cryptonym that shares a name with a modern trade body, hidden for years in the Joint Intelligence Bureau files.

By Roy Castellano ·