Data on classes held twice each year by American Manganese Steel Division of American Brake Shoe Co at Chicago Heights, Ill, for training railroad track work welders; welders are trained in theory and practice of welding and otherwise maintaining frogs and other items made of manganese steel.
Teaching welders how to maintain manganese frogs
Ry Track Structures
Railway Track and Structures ; 53 , n 5
1957
4 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1934
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|Engineering Index Backfile | 1942
|Engineering Index Backfile | 1929
|Engineering Index Backfile | 1942
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