long before when most of you were born, and not quite the same magnitude as Beirut....we had a giant explosion in Roseburg Oregon in 1959. Dynamite and ammonium nitrate. 14 dead: https://oregonencyclopedia.org/articles/roseburg_blast/#.XyzZiIh7l1s https://video.pbs12.org/video/soptv-specials-roseburg-blast-catastrophe-and-its-heroes/