Posted on 06/30/2007 6:46:14 PM PDT by WmShirerAdmirer
The “patio gas” bomb defused in Haymarket would have generated a fireball the size of a house and a shock wave spreading out over a diameter of at least 400 yards, explosives experts said today.
The propane cylinders and petrol used in the device would have triggered a huge conflagration, as well as causing shrapnel and blast injuries from the exploding car chassis and the nails packed around the bomb, according to Hans Michels, Professor of Safety Engineering at Imperial College, London.
Just one 13kg propane canister — the type sold by Calor under the brand name “Patio Gas” — would release a highly flammable cloud of vapour that would spread over an area of 50 to 60 cubic metres before igniting into a still larger fireball, he said.
“The vapour cloud from one cylinder would fill the order of a big room, and when it ignited the effect would be even bigger,” Professor Michels said. “In addition to the power of the explosion and the shrapnel, you would get a fireball the size of a small house.”
As several propane or butane cylinders were recovered, the volume of the fireball would have been greater still, though it is impossible to calculate the size without knowing how much gas would have been involved.
Professor Michels, who has been an expert witness in explosives trials, said that although the police did not say whether high explosives were found in the car, another charge would probably have been used to ignite the petrol and gas.
An initiator such as triacetone triperoxide or TATP could have been used to detonate a main charge, such as the flour and hydrogen peroxide mixture allegedly used in the failed attacks of July 21, 2005. This would have blown up the car, scattering nails and shrapnel, as well as igniting the petrol and puncturing the gas cylinders.
The gas-fuelled fireball would have followed, though the timing of ignition would have affected the ultimate extent of the blast. It is possible that the petrol was intended as the main charge, but if so this would have resulted in a smaller explosion than if high explosive had been used.
The original explosion would have had to be large to penetrate the propane canisters, which are designed to withstand high-speed traffic accidents and fires.
Professor Michels said: “It is almost certain that the explosive device itself would have been sufficiently powerful not to just fragment the gas cylinders, but to destroy the car and possibly the front of buildings, with missiles, shrapnel, nails and burning petrol flung at very high velocity in the wake of the shock wave and the whole surrounded by a massive fireball resulting from the instantly evaporated and exploded propane and/or butane.
“It is also likely that the source of ignition and the explosive that should have set off the device was of the home made type, consisting of household materials now most commonly used by terrorists.”
Other experts suggested that the total blast could have been bigger still, depending on how many propane cylinders ignited and on whether high explosive was also used.
Andy Oppenheimer, editor of Nuclear, Biological and Chemical International, said the blast radius could have been anything from 200 years to half a mile. “It would have been a devastating explosion,” he said.
“With that amount of petrol and an unknown quantity of pressurised gas, the blast would have been about 200 yards. If high explosive was involved, the blast could have reached half a mile.
“Hundreds of people could have been injured if they had been in the area at the time. The knock-on effects of breaking glass are particularly devastating, for example.
“This would have been an explosion on the scale of those seen in the Middle East, although not as big as some that have been seen in Baghdad recently.”
The recovery of the intact bomb will also help forensic scientists to trace the bomb-makers, Professor Michels said. Propane cylinders carry a serial number which can be used to find the point of sale, and isotopic analysis could be used to trace any flour used in the main explosive charge.
Propane cylinders contain liquified propane, a volatile hydrocarbon, which would rapidly be transformed into a gas occupying 200 to 400 times the volume when released. This would mix with between 15 and 20 times that volume of air to produce an inflammable vapour cloud.
Brian Baker, director of the Association For Petroleum And Explosives Administration, said: “Propane is liquefied petroleum gas and patio heater gas is usually 97 per cent propane. Cylinders of this type of gas are readily available to the public and can be bought in places such as petrol stations and iron monger in particular.
“Propane is heavier than air when released, highly flammable and easy to ignite. When released in to the atmosphere and only a small amount is a required to cause an explosive condition and this is worse in a confined space when subject to an ignition source. Its explosive properties mean that 10 litres of the gas is equivalent to 2770 litres of flammable gas and air mix. There are controls on using this type of gas and this is why the industry gives lots of safety advice about use.”
Here you have the choice to believe this guy or believe Olbermann and his hack analyst.
Your choice.
LONDON (AFP) - London Mayor Ken Livingstone called on Britons Saturday not to demonize Muslims after a double car bomb plot was foiled in the capital, amid fears of a Islamist terror threat.
At the same time he criticized Britain over its ties with Saudi Arabia, which he said had fuelled intolerance in the past through its Wahhabist form of Islam, creating a “major problem.”
“In this city, Muslims are more likely to be law-abiding than non-Muslims and less likely to support the use of violence to achieve political ends than non-Muslims,” he told BBC Radio.”
______________________________
Fool.
“More Moslems came, and soon a small mosque was built, which attracted yet others. As long as Zoroastrians remained in the majority, their lives were tolerable; but once the Moslems became the more numerous, a petty but pervasive harassment was apt to develop. This was partly verbal, with taunts about fire-worship, and comments on how few Zoroastrians there were in the world, and how many Moslems, who must therefore posses the truth; and also on how many material advantages lay with Islam. The harassment was often also physical; boys fought, and gangs of youth waylaid and bullied individual Zoroastrians. They also diverted themselves by climbing into the local tower of silence and desecrating it, and they might even break into the fire-temple and seek to pollute or extinguish the sacred flame. Those with criminal leanings found too that a religious minority provided tempting opportunities for theft, pilfering from the open fields, and sometimes rape and arson. Those Zoroastrians who resisted all these pressures often preferred therefore in the end to sell out and move to some other place where their co-religionists were still relatively numerous, and they could live at peace; and so another village was lost to the old faith.”
Boyce, A Persian Stronghold of Zoroastrianism, pp. 7-8;
Well said. :-)
Where's that Mr. Obvious jpg when you need it?
CNN just had a report about Muslims in London and right off the bat, one of the interviewees spoke of sharia law being the law and the only law over the muslim community there, and one day the law over all of Great Britain. Thanks for the information you supplied above, I was unaware.
glad i could help.
the depravity of these Muslims is something so deep that i’m afraid our humane upbringing gives us no frame of reference to even think that people can think like this and think they’re going good by being so evil.
By tomorrow they will have reviewed their previous stories and will begin telling us that these terrorists posed no threat whatsoever ~ that propane, by golly, is good for ya'!
Really now, how much damage can a bumper sticker actually do.
But probably not worse than when a Californian crashes his hydrogen fueled (required by law of course) car.....
Ah, there it is...
I believe a fireball in mecca is in order.
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