molten
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A scene in a steel mill, Republic Steel, Youngstown, Ohio. Molten iron is blown in an Eastern Bessemer converter to change it to steel for war essentials (LOC)
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)
![White-hot steel pours like water from a 35-ton electric furnace, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. The finest quality steels and alloys are produced in these furnaces, which allow much greater control of temperature than other conversion](http://farm3.static.flickr.com/2385/2178430363_5bed2dfd1c_m.jpg)
White-hot steel pours like water from a 35-ton electric furnace, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. The finest quality steels and alloys are produced in these furnaces, which allow much greater control of temperature than other conversion
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)
![Ladle of molten iron is poured into an open hearth furnace for conversion into steel, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. Note the safety latch on the crane hook (LOC)](http://farm3.static.flickr.com/2284/2179220298_5ea4d35275_m.jpg)
Ladle of molten iron is poured into an open hearth furnace for conversion into steel, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. Note the safety latch on the crane hook (LOC)
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)
No known copyright restrictions(著作権制限なし)
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