Pictures of Britain's first hydrogen bomb explosion.
Christmas Island, Pacific Ocean.
Various air shots of Cassidy Airfield on Christmas Island where the first H-bomb test explosion is about to take place. Various types of RAF (Royal Air Force) planes are seen. Long shot of Valiant bomber taking off - probably to drop the bomb. Men in protective clothing are seen on the control ship "Narvik" - they will observe the test explosion. Plane in flight. Cut to the men in protective clothing on the ship getting ready for the explosion. Men in front of a huge command board getting ready. Close up shot of a man sitting in front of board with microphone in his hand. He talks into it. Several shots of the men in front of the command board. Plane in flight. Several shots of "Narvik", men waiting for the explosion. Long shot of the sky - some clouds. A great bang is heard and peculiar cloud starts to form. It gradually develops into a mushroom. Men in protective clothing observing it from deck of the boat. Cut back to a mushroom. Long shots of the explosion - heath wave is seen spreading across the land and mushroom slowly forming over it. Amazing low angle shot, from the base of mushroom, it looks like a huge tornado. More amazing shots of the explosion.