Nevada Desert, United States of America (USA).
Atomic bomb explodes. Mushroom cloud rises. Effects on model house as the shockwave blasts it away. A civil defence observer inspects the damage. Views of model house further from blast site - less damage. Views of Dummies used to test effects....
Atomic research station near Ottawa experiments with medical use of atom.
Machines which make "man-made lightning" are demonstrated.
People in the rebuilt city of Hiroshima remember the dropping of the Atomic bomb.
Norwegian heavy water plant damaged.
Atomic bomb tests at unknown location.
Eisenhower pressing handle which starts power supply, turbine generator, diagram registering.
Various shots of American nuclear powered submarine USS Skipjack.
Half completed Sphere, interior of Sphere, men at work inside Sphere.