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The little known story of the Welsh scientists who developed atomic weapons and how their research eventually turned to peace.

Clydach’s Mond Nickel factory which supplied Los Alamos with the mesh they needed to separate the Uranium isotope from the Uranium ore.

We discover the story of Swansea born physicist Joan Curran, who after devising the Windows, or chaff system, to help the Air Force, went on to contribute to the Manhattan project.

We find out what happened after the bombs were dropped on Hiroshima and Nagasaki and how many Swansea scientists went on to take part in building the British Atomic Bombs. Sir Ieuan Maddocks, a miner’s son from Gorseinon, considered to have made an ‘outstanding contribution’ to the bomb programme. His part in the testing of the British atomic bomb off the coast of Australia got him the nickname – The Count of Monte Bello. DT Lewis, also the son of a miner from Brynmawr doing his PhD in Swansea.

Currently nuclear bombs are a deterrent and work continues in defence engineering and technology at the atomic weapons establishment in Aldermaston. We have a rare chance to visit the exterior of the site with a Swansea University scientist who has worked there for 57 years.