How are fireworks made?

Wow, been neglecting things around here lately. Sorry 'bout that. Been getting a lot of housecleaning done, though! :)

Just a quick post for now: after Independence Day fun, Littleman asked me how fireworks are made. I went looking for more info, and found some cool videos (both from the Discovery Channel) about it. Enjoy.



Note: the fireworks portion of this one begins at 50 seconds (0:50) in.