This colossal, almost unimaginably destructive weapon was dropped from 4000 metres (approx. 12000 feet) from a Tupolev 95 strategic bomber and exploded altitude for an airburst test. Details are scant in documenting the awesome power of such a weapon. However it is known that the flash from the bomb was seen six hundred miles from the explosion and the shockwave of the bomb circled the Earth three times. A bomb of this order of magnitude is some 6500 times more powerful that the bombs dropped on Hiroshima and Nagasaki. The blast caused a one hour radio blackout (due to the size of Electro Magnetic Pulse produced) and the mushroom cloud rose some 65km into the atmosphere2. It was observed that wooden buildings hundreds of kilomteres from the explosion were flattened and stone houses lost their roofs3.