Describes an arrangement lately installed on the Chesapeake and Ohio R. R. for controlling the traffic between the stations of Lowell and Hilldale, Va. A tunnel 6500 ft. long and a bridge 528 ft. long in a distance of 4.2 miles. An absolute block system. (2000 w.)
The protection of railroad traffic through tunnels
Eng News
1898
Article (Journal)
English
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