. Electric railway journal . Sump No. 3 ! Profile on East Bound 1 In. = 2000 Ft. :- yer l = 200 ft. Sump Xo. 4 Fig. 1—Detroit Tunnel—Plan of Tunnel and Approaches, with Profile of Eastbound Track Duput Feede Elevator BT FeederSparc FeederSpare Feeder Futu. Negative Railway Feedersfrom Track Kails at Shaft Positive Railway Feeders to Third Rail andCircuit Breaker Bouses W&LHJ

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