The UP236-TDC, or uranium/pollonium-236 tactical demolition charge, was a demolition charge that utilized a small disc of uranium and a wedge of pollonium-236, surrounded by a number of shaped charges. Essentially a small nuclear bomb, the UP236-TDC induced nuclear fusion through kinetic force; the TDC's small size and high yield made it a favorite for scorched-earth operations during the Cold War.