The two tunnels built in 1901 on the only SBB-line electrified with 25kV have been equipped with a conductor rail.
The two tunnels built in 1901 on the only SBB-line electrified with 25kV have been equipped with a conductor rail.
Ingenieurbüro, Fahrleitungsbau
Thunstrasse 35
Postfach 182
3000 Bern 6
Schweiz
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