France conducted ten nuclear tests in 1979 from March to November for the development of a substitute energy source.
France's 19791980 series tests and detonations 1 March 1979 17:24:00 9 March 1979 16:37:00 24 March 1979 16:28:00.4 4 April 1979 18:07:00.5 18 June 1979 23:27:00.7 29 June 1979 18:56:00.2 25 July 1979 17:57:00 28 July 1979 19:56:00.3 19 November 1979 17:53:00 22 November 1979 19:14:13 underground shaft,
weapons development underground shaft,
weapons development underground shaft,
weapons development underground shaft,
weapons development underground shaft,
weapons development underground shaft,
weapons development underground shaft,
weapons development underground shaft,
weapons development underground shaft,
weapons development underground shaft,
weapons development Name 
