The bombers responsible for the July 7 blasts in London used commonly available products to make their explosives, New York police told security officials in a briefing Wednesday. According to the New York Police Department, investigators in London believe the bombers used a peroxide-based explosive called HMDT, or hexamethylene triperoxide, which can be made with such common items as hydrogen peroxide, which is used to bleach hair; citric acid, a food preservative; and heating tablets used by the military for cooking. New York City Police Commissioner Raymond Kelly told private security officials that while it was initially thought the bombers used high-end military explosives, it was “more like these terrorists went to a hardware store or some beauty supply store.” Full Story