Joseph McKenna, Santa Fe Pacific Railroad Company v…
“ They require telegraph operators to report the time of departure and passing of trains. This is absolutely necessary for supervision. The business is hazardous. Trains may be rushing towards each other upon a single track. All may go well. The observance of time alone may be sufficient for safety. But something may occur to one of the trains, with or without fault of anybody, which may endanger the other. May a train despatcher know it and not guard against it? A negative answer would be revolting.There can be no doubt of the duty of the train despatcher in such case. ”
