A series of tests for weapons development conducted from July 1, 1971 until June 28, 1972 was called Operation Grommet.
July 1, 1971 14:00:00.04 July 8, 1971 14:00:00.082 July 9, 1971 14:00:00.16 July 21, 1971 13:33:00.05 August 4, 1971 13:30:00.042 August 5, 1971 18:07:45.2 August 5, 1971 18:07:45.2 August 6, 1971 14:31:00.16 August 18, 1971 14:00:00.03 September 22, 1971 14:00:00.037 September 22, 1971 14:00:00.04 September 22, 1971 14:00:00.04 September 22, 1971 14:00:00.04 September 29, 1971 14:00:00.04 September 29, 1971 14:30:00.14 October 8, 1971 14:30:00.15 October 14, 1971 14:30:00.16 November 6, 1971 22:00:00.06 November 24, 1971 20:15:00.17 June 28, 1972 16:30:03.16 June 28, 1972 16:30:00.07 June 28, 1972 14:41:00.19 June 7, 1972 15:20:00.16 May 19, 1972 17:00:00.05 May 17, 1972 14:10:00.16 April 19, 1972 16:42:00.05 April 19, 1972 16:32:00.16 May 2, 1972 19:15:00.04 May 11, 1972 14:00:00.16 March 30, 1972 21:00:00.04 March 30, 1972 21:00:00.08 March 23, 1972 18:50:00.16 February 17, 1972 19:02:00.16 February 3, 1972 21:45:00.04 January 5, 1972 15:10:00.04 December 14, 1971 21:10:01.04 December 14, 1971 21:10:01.04 December 14, 1971 21:09:59.16 November 30, 1971 15:45:00.15 underground shaft,
weapons development underground shaft,
weapons development 
