Eninman Island; Operation RedWing, Zuni surface detonation at 2.7 m, 3.5 Mton; three-stage “clean” thermonuclear device: it draws 85% of its power from fusion (low radioactivity) rather than nuclear fission (high radioactivity); it is a prototype of the 25 Mton Mark-41 bomb, which will be the most powerful weapon in the American arsenal (the Soviets also had 100 Mton weapons).
