Radio telephones installed on mainline haulage locomotives provide safe and efficient traffic control in handling 7500 tons of coal per single shift at Peabody No. 7 Mine; trolleyphone intercommunication system establishes constant verbal contact between dispatcher and motormen, facilitating speedy traffic movement and supplies distribution; installation and operating data described by same author in article indexed in Engineering Index 1947 p 218, from Aug 1947 issue.
Use of trolleyphones speeds mainline haulage
Mechanization
Mechanization ; 12 , n 5
1948
Aufsatz (Zeitschrift)
Englisch
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