Operation Mosaic

Operation Mosaic was a series of two atmospheric nuclear tests conducted by Britain in the Montebello Islands off the north-west coast of Australia in 1956. It was preceded by Operation Totem (1953) and succeeded by Operation Buffalo (1956) both conducted in South Australia.

Test: G1

 * Time: 16 May 1956 (0350 GMT, 10:50 WAST)
 * Location: Trimouille Island in the Montebello Islands, Australia, 20.23 S, 115.55 E
 * Test Height and Type: Aluminum tower, 31m
 * Yield: 15 kt

Test: G2

 * Time: 19 June 1956 (0214 GMT, 10:14 WAST)
 * Location: Alpha Island in the Monte Bello Islands, Australia, 20.40 S 115.53 E
 * Test Height and Type: Aluminum tower, 31 m
 * Yield: 98 kt