Its arsenal manufactured gunpowder, handguns and a few cannons. The blockade starved the American military of saltpeter and therefore gunpowder. British India was the only source of the saltpeter used in Union gunpowder. Bombs made of cast iron shells packed with explosive gunpowder date to 13th century China. Maximum projectile velocity obtainable with gunpowder in cast cannon was approximately . Grains are used worldwide for measuring gunpowder and smokeless powder charges. This was used for the manufacture of gunpowder and explosive devices. Dzungar weaponry included a fair amount of gunpowder weaponry. The tube was loaded with gunpowder and lead bullets. It was one of the first standardized uniforms suitable to the age of smokeless gunpowder. Byron continues to create art, including paintings created by igniting gunpowder. It consisted of a cask of fire-extinguishing liquid containing a pewter chamber of gunpowder. Poison was also employed in gunpowder warfare. The Mamluks in particular were conservatively against the incorporation of gunpowder weapons. She is invoked against thunder and lightning and all accidents arising from explosions of gunpowder.