As I do every time the topic comes up, here's a couple of videos for anyone unfamiliar with the Halifax Explosion; still the largest non-nuclear human caused explosion ever recorded. (about 4x more powerful than Beirut, for a modern reference point) youtu.be/rw-FbwmzPKo?...

Heritage Minutes: Halifax Explosion

Train dispatcher Vince Coleman sacrifices his own life to save a train from the Halifax Explosion.For more information about the Halifax Explosion, visit: ht...

And this animated one is great too. (and how great is it that the NFB makes these films available for free?)

The Flying Sailor

The NFB’s 77th Oscar®-nominated film. Two ships collide in a harbour, an explosion shatters a city, …