What was to become the W89 design was awarded to the Lawrence Livermore National Laboratory in the mid-1980s. It entered Phase 2A technical definition and cost study in November, 1986. It entered Phase 3 development engineering and was assigned the numerical designation W89 in January 1988. The W89 design was a diameter by long weapon, with a weight of and yield of 200 kilotons. The design was cancelled in September 1991 along with the SRAM II missile, prior to production of any units, though some test devices may have been manufactured.
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is detonation of |