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+"United States USA" +1922 stock footage and images
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Protection of forests by preventing forest fires and planting more trees for future supply in the Northern forests of the U.S.
Forests being converted to lumber industry in Northern forests of the United States. Protection of forests from fire and more trees planted for future wood supply. View of burning trees during a forest fire. Girl sorts seedling trees. Group of workers plant trees in rows. Field on seedling trees.
Pig iron is changed into steel and molten metal is poured from a furnace into a ladle in an iron and steel factory in the U.S.
An iron and steel factory in the United States. Pig iron, scrap steel and molten iron is changed into steel by melting it in an open hearth furnace. A horizontal charging machine empties boxes of metal and scrap into the furnace. Finished molten steel pours from the furnace into a ladle. A row of molds filled with molten steel; small sample ladles or spoons are carried away by workers for analysis.
Huge ingots being transferred from flatcars to a bloom mill in the United States.
An iron and steel factory in the United States. Huge ingots on flatcars being pushed by a locomotive. A row of ingots on the flatcars. Steel fingers transfer an ingot from a pit to a conveyor. The white hot ingot goes on to a bloom mill. Hot ingot on the conveyor being drooped onto a conveyor car on tracks.
Steel ingots on rollers and machinery are changed into rods of various sizes inside an iron and steel factory in the U.S.
An iron and steel factory in the United States. Powerful and heavy rollers in a bloom mill roll a steel ingot into a rod. The ingot enters the rollers, moves back and forth in the rollers and changes shape. Workers tend a rolling machinery. White hot rods are drawn into desired sizes. The rods in several different machines. The workers operate machinery and move the rods with prongs. They guide the rods into a cutting machine.
Animated map shows steel centers and a view of steel mills, a river and railroads in the United States.
Steel centers of the United States. Animated map shows steel center locations around the Great Lakes. Activity at a steel mill in Pittsburgh. A view of steel mills, a river and railroad tracks.
Ships move under a large steel suspension bridge in the United States.
Uses of steel in the United States. A man uses steel for construction of bridges, buildings and ships. A large suspension bridge. Ships move under the bridge.