Cyclotol is an explosive consisting of castable mixtures of RDX and TNT.
Cyclotol is not commonly used, but was reportedly the main explosive used in at least some models of US nuclear weapons.
Sublette lists Cyclotol as the explosive in the US B28 nuclear bomb and possibly related weapons that used the common Python primary - W34, W28, W40, and W49.
[2] In a modern military industry last 20 years Cyclotol can be used as filler and main charge most of cluster submunition, especially with a piezoelectric crystal igniter.
[citation needed] It was also used in the Mecca Masjid bombing which killed 16 people.