Construction of the Panama Canal. A view of the Panama Canal constructed by U.S. Army engineers. The engineers work at the Culebra Cut. A railroad train on tracks. Smoke comes out. A crane lifts up rubble. Two engineers stand and one of them holds a shovel in his hands. The engineers work at Gold Hill. They use a hydraulic excavation cylinder and spray. A view of the Culebra Cut before the water entered. A boat underway in the Culebra Cut. A spillway at Gatun Lake. Water is controlled by the spillway. A sign reads 'Gatun Locks'. A liner in Gatun Locks. People at the dock along the Panama Canal. A view of Panama City, with people and traffic on the streets. Buildings on a street of Panama City. Mountains in the background.
The benefits to farmers in the United States from the Inland Waterways Corporation System (IWC). Crops grown in a farm. Horses tow a harvest machine. Farmers on the harvesting machine. They harvest grains. A farmer rides a horse dawn carriage which is loaded with grain. A train on tracks. Smoke comes out from an engine. Grains come out of an elevator and are transfered to IWC barges. The barges at a seaboard terminal. Buildings in the background. Grains being unloaded from the barges at the sea board terminal.
A training film shows how air is purified by the U.S. Army gas mask in the United States. A U.S. soldier holds a U.S. Army gas mask in his hands. The soldier points out his finger on the part of the mask from where the poisonous air comes in. He holds a box. The soldier points out at the tube of the mask. He points at a mouthpiece and puts it in his mouth. The outlet valve of the mask. He shows the nose clip and puts the mouthpiece in his mouth and nose clip on his nose. He then holds the nose clip in his hand, puts it on his nose and then removes it.
A World War 1 training film shows how to carry and don a gas mask. A U.S. soldier stands at attention. He carries a mask in a satchel. The satchel is slung over the shoulder of a soldier. He shows the satchel. He turns. The soldier demonstrates the way to carry the satchel in trenches. The satchel is slung around his neck. He opens the satchel, takes out a string and ties it around. He opens the satchel and takes out the mask . He puts his chin forward and wears it.
USS Thomas underway in the Philippines Sea. Smoke comes out from the engine of the ship. Cliffs in the foreground. U.S. soldiers aboard USS Thomas stand in formation. An officer trains the soldiers. They practice drill. An officer is escorted and he reviews the soldiers.
At the end of World War 2, in Europe, citizens of Berlin (mostly women) cooperate in a bucket brigade to clear rubble from their walks and streets. Lacking any machinery, they use shovels to fill buckets and pass them up the hill of debris at the base of bombed out buildings. A train passes below damaged roadway where camera is located. Camera pans to the cleanup site, where dozens of people are occupied. Closup of a man using a mason's hammer to break concrete slabs so they can be moved by hand. Women inside the walls of a demolished building, where they empty the buckets and throw the concrete slabs.
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