Aviators Clarence Chamberlain and Bert Acosta fly plane along Roosevelt Field, New York. They set new flight record for flying for the longest duration. Huge crowd gathers to watch them. Plane in flight. A flare signal informs them when the previous record was broken. The wives of the aviators watch them. View of land below. A clock shows the time when the record is broken.
U.S. Army soldiers surround aviators and their aircraft at Wheeler field in Hawaii. U.S. Army aviators Lieutenant Lester J Maitland and Lieutenant Albert F Hegenberger wear Hawaiian flower Leis, presented upon their arrival in Hawaii after flying from Oakland, California. The aviators completed the first flight from mainland U.S. to Hawaii, some 2400 miles, setting a new record. Their airplane, a Fokker Trimotor, named Bird of Paradise, is seen in background. They hold a news conference.
A worker with a drill in a mine. Rill stopping is displayed in the mine. Blasted ore runs over an inclined plane-a chute. Workers move ore loaded trolleys in a shaft station
A pumping station in a half mile deep mine. It pumps out 2400 gallons per minute. Pumping machinery at the station. Blades of a fan move. Stairs near the fans.
A central compressor plant in United States. Machinery of the plant includes huge wheels. The compressor plant supplies 60,000 cubic feet of free air per minute for drills.
Bingham canyon mine in Utah. A worker drills with a piston air drill. A crane moves drilled ore to a railroad car of 80 ton capacity. The rail cars are driven by oil-electric locomotive. The rail car moves in the mine. Blasting in mine results in smoke and dust. A train carries 45 rail cars to a 20 mile distant factory
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