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Manufacturing process of safety glass in a glass factory in the United States
Sand rock and silica sand being quarried by blasting and being broken down and cleaned before transporting to a glass plant in United States for manufacturing safety glass. Various raw materials like sand, limestone, soda ash, charcoal and salt cake are put in a furnace, moved about, blown, and afterwards melted to roll out sheets of glass.
Grinding and polishing process in manufacturing of safety glass in a factory in United States
Sheets of glass are picked up by suction cups and placed on grinding table at a factory in United states. Grinding and polishing takes place twice.
Placing cellulose acetate between two glass sheets to manufacture safety glass in a factory in United States
After polishing and grinding, sheets of glass are washed with acid and water. These sheets are then cut into special shapes at a safety glass factory in United States. A cellulose acetate sheet is placed between two glass sheets and rollers are moved over it. Sheets are heated at 300 degrees Fahrenheit and subjected to 200 pounds of pressure before final polishing and grinding. After this, safety glass is ready for installation.
A press room filled with newsmen; men type using typewriters in a newspaper newsroom in the United States
A reenactment shows a man pressing a switch to open an electric door in United States. He presses the switch and moves out from the door. View of a busy press room for a newspaper, filled with newsmen and reporters. A number of men work on their typewriters in the room. A man speaks over phone as other men continue to type.
Big guns manufacture for new fighter aircraft at Washington Navy Yard.
Big guns manufacture for new fighter aircraft at Washington Navy Yard. Aircraft overhead. U.S. Navy officer points on a map. Captain and crew on ship's deck. Warship underway at sea. Explosions in water.
A man reads several newspapers about Orson Welles' radio broadcast of alien invasion
A man sits on a chair. He reads a newspaper. The headlines of the newspaper New York Post reads 'US probes "Invasion" broadcast, Radio play causes wide panic'. Photograph of Orson Welles, appears on front page of the newspaper. Man folds the newspaper and picks another with headline reading:" Radio War Hoax Panics Nation." Another newspaper headline reads 'Fake radio war stirs terror through US'. Several articles lying on table kept in front of him.