Last Christmas one of my office coworkers brother died from a fireworks explosion. It was tragic.
Aparently, they had made a bigger firework by combining the powder of smaller ones. He had in his hand when it went off. He spent about 10 days in the hospital before succumbing to his injuries near his abdomen and hands. RIP.
A long while ago when I was a dumb teenager one of my buddies lit a firework and then just stood there holding it like a dumbfuck. Finally he threw it, it went off about half a second after leaving his hand, which he drew back IN MY FACE to throw. Less than a second from being blind. No more firecrackers after that.