City of Halifax, Nova Scotia, Destroyed in 1917, During World War I

From the December 20, 2017, MidWeek  "Looking Back."

1917, 100 Years Ago.

"The City of Halifax is destroyed by fire."

This would be the Halifax Explosion.  From Wikipedia.

Halifax, Nova Scotia, Canada.  December 6, 1917.  A Norwegian ship collided with the SS Mont-Blanc, a French cargo ship laden with high explosives.  Approximately 2,000 were killed and another 9,000 injured.  It was the largest man-made explosion before the advent of nuclear weapons.

Horrific.