Once it broke those levels, we will just call it almost like a pressure cooker.
At least one was a pressure cooker that contained BBs and nails, the affidavit said.
WSJ: Dzhokhar Tsarnaev Charged by U.S. Prosecutors in Boston Marathon Attack
One was housed in a pressure cooker hidden inside a backpack, the FBI said.
CNN: Healing in Boston as investigators seek 2 seen near bombing
"It's going to be a short-lived Knesset, a pressure cooker, a national-paralysis-government, " he said.
"Shoot out with 5 minutes of gun fire and pressure cooker bomb, " Kitzenberg tweeted at 12:57 a.m.
CNN: From fear to cheers: The final hours that paralyzed Boston
The lid of a pressure cooker has been found on the roof of a building on Boylston Streets.
One was housed in a pressure cooker hidden inside a backpack, the FBI said in a Joint Intelligence Bulletin.
The pressure cooker concentrates the blast, magnifying the effect of relatively weak explosives.
The pressure cooker's history as a bomb canister reaches back decades, he said.
In these circumstances, simply clamping down on new media could amount to putting the lid on a pressure cooker.
"It was an insane time, in an insane area -- an intense pressure cooker, " Rothenberg said of the era.
Investigators have not said whether the pressure cooker bombs used in the attacks were made with gunpowder extracted from fireworks.
One had been housed in a pressure cooker hidden inside a backpack, the FBI said in a joint intelligence bulletin.
Anything that makes the FDA more of a pressure cooker than it already is would be a disaster for pharma.
Dr Peter Hawker, chairman of the British Medical Association's consultants committee, said they created "a pressure cooker atmosphere" in hospitals.
They later discovered it was a pressure cooker bomb, similar to the ones used at the marathon Monday, the chief said.
As a common cooking utensil, the pressure cooker is often overlooked when searching vehicles, residences or merchandise crossing the U.S. borders.
For Salmon, the next two days will be a pressure cooker, he said, as he sweats out the project's final hours.
"I'm very hesitant to give him advice because he has matured in a pressure cooker, " the 55-year-old Mr. Proctor says of his son.
They have released images that appear to show the remains of a dark-coloured backpack and a pressure cooker, as well as a triggering mechanism.
The second bomb was in a metal container, but it was unclear whether it was in a pressure cooker as well, the FBI said.
CNN: Healing in Boston as investigators seek 2 seen near bombing
At least one of the Boston bombs was made from a pressure cooker packed with explosives, nails and ball bearings, investigators have told US media.
The second bomb was also housed in a metal container, but it was not clear whether it too was in a pressure cooker, the FBI said.
In 2010, the Yemen-based al Qaeda in the Arabian Peninsula's Internet magazine carried an article with a step-by-step guide that included the use of a pressure cooker.
The second bomb was also housed in a metal container, but there's not enough evidence to determine whether it was also in a pressure cooker, the agency said.
Unnamed security sources have been quoted in US media as saying at least one of the bombs was placed inside a pressure cooker packed with ball bearings and nails.
Police had found a large quantity of potassium nitrate, sulphur, five metres of cable, alarm clocks, headlamp bulbs and a pressure cooker that could serve as a bomb casing.
Those who see the Cuban situation as a pressure cooker that needs just a little more heat to explode feel defrauded by these "concessions" to Havana from the Democratic government.
In the foiled Times Square bombing of 2010, authorities said one of the three devices would-be bomber Faisal Shahzad had assembled was a pressure cooker containing more than 100 firecrackers.
The FBI said late Tuesday that what appeared to be fragments of ball bearings, or BBs, and nails had been recovered and had possibly been contained in a pressure cooker.
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