] U.S. troops found thousands of boxes of white powder, ] nerve agent antidote and Arabic documents on how to ] engage in chemical warfare at a military factory south of ] Baghdad, U.S. officers said Friday. But a senior U.S. ] official familiar with initial testing said the powder ] was believed to be traditional military explosives, not ] an ingredient for weapons of mass destruction. At least the white powder wasn't an export from the Columbia drug cartel. U.S.: Vials, chemical manuals found in Iraq |