According to authorities, the Tsarnaev brothers fashioned explosive devices from pressure cookers and other materials and detonated them near the finish line of the race.
CNN: Suspect: Boston bombing was payback for hits on Muslims
With explosive material placed in pressure cookers and nails and other small parts added to make them more lethal, the devices tracked the Inspire recipe.
Three people died and more than 260 were wounded after two explosive devices made from pressure cookers detonated near the Boston Marathon finish line on 15 April.
Three people died and more than 260 were wounded when two explosive devices fashioned from pressure cookers and other materials exploded in separate locations near the finish line of the Boston Marathon on April 15.
In their stolen SUV they had five pipe bombs and a pressure-cooker explosive like the ones that blew up at the marathon, Kelly said.
There he built a powerful but rudimentary bomb, using ingredients he was able to purchase locally: pressure cookers, fireworks, explosive chemicals, and nails and ball bearings.
Investigators determined the explosives used were crudely made bombs, built into pressure cookers using black powder explosive and made more lethal by using nails and pellets, a lawmaker said.
And here lurks another danger: the further research goes into new types of nuclear weapons, the greater the pressure there will be for explosive tests to prove that they can work.
The U.S. Department of Homeland Security has issued several unclassified bulletins about the use of pressure cookers as part of an explosive device.
The bombs appeared to have been built by packing the pressure cookers with a black powder explosive as well as nails and pellets to maximize casualties, a lawmaker briefed by investigators said.
Investigators have determined the bombs were assembled from household pressure cookers, a crude but effective explosive that has been thwarted in several prior U.S. terror plots.
The reason I say this, in talking to the mental health people, there's tremendous pressure on these troops with the IEDs (improvised explosive devices, bombs used against U.S. troops) and going out into the intense combat they're involved in.
Pressure cookers, he said, help build up pressure when using "low explosives" those less powerful than a more sophisticated explosive like C-4.
应用推荐