France, the fourth country to join the "nuclear club" began testing in the Sahara Desert of Algeria in 1960.

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Testing in Algeria continued until 16 February 1966, three and a half years after Algeria had gained independence. The test site was returned to Algerian control 15 January 1967. France's testing program then moved to the Mururoa and Fangataufa Atolls in the South Pacific.

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Murora Atoll


Muroroa I test

France held six tests from September,1995 to January, 1996 after halting tests in 1992 when the other signers of the test ban treaty did.

More information from nuclearweaponarchive.org which provided most of the information for this post.

Thanks to greenwood for providing database information.

To find out about all testing by all countries, go here.