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John Holt
Professor John Riley Holt, FRS  (1918 – 2009),  Experimental Physicist, 
was born and educated in Runcorn and came from a traditional family of Runcorn ship builders. His mother ran a bakery in the town.

Holt was a close assistant and colleague of the Nobel Prize winner - Sir James Chadwick, discoverer of the neutron. He was hailed as Chadwick's best researcher.

Holt played a part in the Manhattan Project and later became one of the stand-out
pioneers of elementary particle physics. He carried out dangerous nuclear fission experiments underground during air raids.

A quiet man, almost unknown outside of the world of physics, his research and discoveries are continually used today as part of the basic principles of quantum mechanics.