Various buildings in Washington DC. The new Department of Commerce Building. New Federal buildings erected in the triangle on Pennsylvania Avenue.
Employees of the Bureau of Reclamation. Commissioner of Reclamation Edward Mead and his employees pose on steps of the Interior Department Building.
Army Day parade on Pennsylvania Avenue, Washington DC. Men on horseback followed by army band along Pennsylvania Avenue. Crowd lines side walks. Military units march. Cadets from Washington's colleges and high schools march. All units parade past the President's reviewing stand.
A research film in which 'mole', an automatic detonator, is tested for effectiveness in disabling railroad trains when a train suddenly enters darkness as in a tunnel. Railroad train approaching camera position near track. Point of view shot from left side of railroad locomotive train as it approaches and enters a tunnel. A train passes through tunnel. Working and components of mole explained. Components include photoelectric cell, amplifier and a detonator. Working of mole explains where to place explosive, why and how to prepare it. Charge is placed on a railroad car. This car is attached at the end of train. A train moves. Train car damaged after detonating mole. Men at railroad car examine. Charge placed by men on train. Explosion and reaction of train is tested. Damage is examined. Next test shows 'linear shaped charge' with explosive and bracket to hold it, demonstrates how to secure charge to bracket, bracket to train car and where to place components of mole. Explosion on train. Damage in detail is examined. World War 2 period.
View of a Campbell Model F airplane from rear, at Bolling Field in Washington DC. It is a pusher propeller "flivver" airplane, costing $1500, with tricycle landing gear and twin tail design, powered by a stock Ford V8 engine, with single ignition. View of engine running and long transverse central elevator, as well as side being moved. View of steerable nose gear. Pilot and inventor Hayden Campbell in the cockpit. Aircraft taxis out and takes off (view of Capitol dome in distance). Views of the airplane's Ford V8 engine, with one spark plug for each cylinder. Removing and replacing the engine cowling. Interior of cockpit, with ignition key, conventional yoke flight controls, basic instruments in panel and long push-pull throttle control.
Men examine a dead beached whale. View of dead whale from different angles. Cameraman wades through water. Crowd around dead whale. A boy stands on whale. Men look at tail fins of whale. Man poses near dead whale.
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