The Canadian National Railways advise as follows:
1. The slide detector fences have been repaired and were restored to service on April 5, 1950.
2. There were twenty-three occasions on which the signals were placed in the "stop" position by the slide detector fence mechanism, when it was in normal operation. On seventeen of these occasions no evidence was found of any rocks having struck the fence. On three occasions small rocks were found in the ditch beside the slide fence, and on three occasions there was a large enough rock fall or slide to obstruct the track.
Subtopic: CANADIAN NATIONAL RAILWAYS