Mine workers arrive at a shaft in cars through a tunnel in copper mine in Jerome, Arizona. Trains of railroad cars enter the mine through a tunnel leading to the underground shaft.
A mine worker wet-drilling at a stope of a copper mine in Butte, Montana. Water is sprayed from drills onto stope walls that makes sludge of the cutting and prevents dust.
Square Set Timbering is seen inside a stope at a copper mine in Butte, Montana. Timber logs provide a support to the soft and broken rock adjoining the veins of the ore. Mine workers drill inside a stope. Timber placed in square set fashion can be seen.
Describes raw materials used in telephone manufacturing. The map of India is shown. Women workers in America punch mica into strips and washers that insulates a telephone's transmitter. Animation shows the use of mica inside a telephone's transmitter.
Describes raw materials used in telephone manufacturing. Women pick cotton at a cotton farm in United States. Bales of cotton taken on hand carts. Animation shows the use of cotton thread inside a telephone's transmitter.
Rationing during World War I. Large crowd gathered outside a building. People collect rations at a counter. People wait in queue outside an American Red Cross Relief Station. Food and medical supplies distributed among people. Red Cross nurses near the queue. Cart rolls supplies from a warehouse.
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