General classification for signal interruptions; maintaining, inspecting and testing spring switches; handling trains through automatic interlocking in case of failure; lightning protection.
Committee V -- Contracts and instructions
Assn Am Railroads -- Proc (Signal Sec)
Association of American Railroads -- Meeting ; 1937 Contracts
Association of American Railroads -- Proceedings Signal Section ; 34 , n 2 ; p 540-549
1937
10 pages
Aufsatz (Konferenz)
Englisch
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Committee V -- Contracts and instructions
Engineering Index Backfile | 1935
Committee V -- Contracts and instructions
Engineering Index Backfile | 1938
Committee V -- Contracts and instructions
Engineering Index Backfile | 1936
Committee V -- Contracts and instructions
Engineering Index Backfile | 1939
Committee V -- Contracts and instructions
Engineering Index Backfile | 1938