To make these loud explosions, which are usually accompanied by a bright white flash, firework manufacturers use mixtures of perchlorate, a different kind of explosive than black powder.

WE NOTHING EVER TO BOTHER. SO THIS IS THIS IS REALLY BIG, CRAZY NEWS. PEOPLE WHO LIVE NEAR GUNPOWDER FALLS STATE PARK SHOCKED BY THE DISCOVERY. SKY TEAM 11 CAPTURED THE VEHICLE BEING TOWED OUT OF ...

Javascript is required to view this content. Please see BBC Webwise for further information. In order to see this content you need to have both Javascript enabled and ...

Gunpowder is an explosive mixture of sulfur, charcoal, and potassium nitrate that burns rapidly. Flash powder is a pyrotechnic material that contains an oxidizer and a metallic fuel. Flashless powder ...