The W-78
thermonuclear warhead is the warhead used on most of the US
LGM-30G Minuteman III ICBM, along with the Mk-12A reentry vehicle which carried the warhead. Minuteman III's initially deployed with the older
W62 warhead, the W-78 was deployed starting in December 1979 onto 300 missiles, 3 warheads per missile. Declassified US records indicate a total of 1,083 W-78s were produced.
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