THE explosion of the Soviet 50 megaton bomb in the vicinity of Novaya Zemlya at approximately 0833 G.M.T. on October 30, 1961, produced pressure oscillations in the atmosphere that were recorded ...

Bravo was anticipated as a 6-megaton explosion. Instead, the bomb produced a 15-megaton fission blast. Its mushroom cloud reached 114,000 feet into the air. The US military's miscalculation of the ...