Patrick Vincent Coleman (13 March 1872 – 6 December 1917)[1] was a train dispatcher for the Canadian Government Railways (formerly the ICR, Intercolonial Railway of Canada) who was killed in the Halifax Explosion, but not before he sent a message to an incoming passenger train to stop out of range of the explosion. Today he is remembered as one of the heroic figures from the disaster.

https://en.wikipedia.org/wiki/Vince_Coleman_(train_dispatcher)