Description of loud speaker intercommunication system installed by Southern Railway System in large freight yard at Birmingham, Ala, which provides 2-way conversation between yard master and switch crew foremen at numerous locations throughout yard and terminal area 5 mi long. (See also Ry Signaling v 39 n 6 June 1946 p 412-7)
Loud-speaker yard communication
Ry Age
Railway Age ; 121 , n 9
1946
3 pages
Article (Journal)
English
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