a sand square exploding into particles, then disappearing leaving a black background for a copy space - gunpowder explosive material 個影片檔及 b 捲影像00:12
ms shot of reenactment american soldiers pour gunpowder and fire cannon / baltimore, maryland, united states - gunpowder explosive material 個影片檔及 b 捲影像00:16
macro shot of grain's of gunpowder falling from a gunpowder filling machine into a powder pan held by a man's hands while ammunition reloading - gunpowder explosive material 個影片檔及 b 捲影像00:05
ms tilt up to reveal barrels of gun powder stacked on top of each other at fort mchenry powder room / baltimore, maryland, united states - gunpowder explosive material 個影片檔及 b 捲影像00:07
slow motion close shot of a cannon ball firing from a cannon. - gunpowder explosive material 個影片檔及 b 捲影像00:48
dishes production / gunpowder used at traditional chinese festivals - gunpowder explosive material 個影片檔及 b 捲影像00:19