US authorities to interview Boston bombing suspects' parents in Russia | Fox News This article states the bombers bought and used a fireworks reloadable mortar kit for the pressure cooker bombs. Not sure what kind of powder that includes. At least it wasn't reloading powder.
Pretty sure that most fireworks sold for home use are made with black powder. Imported from China, of course!
No, Not Black Powder.... Much more likely it would have been, either a Metallic Powder like Zinc dust, or Magnesium dust, and Sulfur, or Potassium Chlorate and Sulfur, based Powder. Black Powder is a Class A Explosive, and shipping is Regulated very heavily, but the later Energetics are the same as Smokeless, for shipping, and ORM-D DOT Rules. Just about ALL Fireworks are ORM-D Classed, due to the Powder Used.
