A shipyard in the United States during World War II. A newly christened ship slides down an inclined slipway on its launch.
Steel production in the United States during World War II. Steel billet enters continuous rod mill. Some workers work on machines. Steel billet rolls into concrete reinforcing bars.
Manufacture of Steel at the time of World War II in the United States. Steel sheeting is run through machine rollers and cleaned specifically for use in tin plate. The sheeting is then stiffened and sheared into convenient lengths. Numerous women war workers at individual work stations of the factory, examine and stack the steel sheets. The women all wear the same type dresses and large protective gloves.
Invention of the incandescent lamp by Thomas Edison in the United States. A dramatization: Thomas Edison lying down on a table. His assistants enter the room. Edison walks towards a burning lamp. All the men observe the lamp. A diagram shows the series system of electrical current movement using a 500 Volt generator.
Invention of the incandescent lamp by Thomas Edison in the United States. A dramatization: Thomas Edison and his assistants build a 110 V dynamo. Edison builds a multiple series system. A diagram compares a multiple system with a series system.
From the civil defense film "Duck and Cover" in the United States. Scenes of explosion and fire. People from fire extinguishing department spray water on a building. A person near the fire extinguisher service truck. Traffic police directs the moving vehicles. Children cross a road. A professor explains to the children about the dangers of an atomic bomb. Cartoon animation: atomic explosion. A buildings being damaged by the explosion. A turtle covers itself. A woman applies medicine to a child. A teacher explains ways to protect oneself during an explosion. A picture of a turtle drawn on a board. A girl child hides herself under a table.
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