The deadly explosion that devastated Beirut appears to have been far more powerful than the 'Mother of All Bombs'
- A warehouse area at a port in Beirut exploded Tuesday, killing more than 100 people and causing extensive damage in the Lebanese capital.
- The explosion is under investigation, a focus of which is thousands of tons of ammonium nitrate, a highly explosive material, improperly stored in the area.
- Weapons experts told Insider they estimated the explosive yield of the deadly blast to be several hundred tons of TNT equivalent, making it at least a couple of orders of magnitude more powerful than the so-called "Mother of All Bombs."
An explosion at a port in Beirut brought destruction to the Lebanese capital Tuesday, damaging buildings, killing more than 100 people, and injuring thousands of others. People recorded videos showing the blast wave and a towering red cloud that some compared to a nuclear weapon's mushroom cloud.
The exact cause of the blast is unclear, but the focus of an investigation is a warehouse improperly storing 2,750 tons of ammonium nitrate.The blast registered as a magnitude 3.3 earthquake, and the effects of the explosion were felt miles away from the blast site. Experts told Insider the blast most likely had an explosive yield of several hundred tons of TNT equivalent.
—Nader Itayim | نادر ایتیّم (@ncitayim) August 4, 2020Jeffrey Lewis, a nuclear and conventional weapons expert at the Middlebury Institute of International Studies in California, estimated the yield to be "between 200 and 500 tons, looking at blast damage, the shockwave, seismic signals, and the size of the crater."
—Emmanuelle Saliba (@_esaliba) August 5, 2020
That much explosive power is at least two orders of magnitude greater than that of the GBU-43/B Massive Ordnance Air Blast (nicknamed the "Mother of All Bombs"), which has a blast yield of about 11 tons and is the most powerful nonnuclear weapon in the US arsenal.The weapon was first known to be used in combat in April 2017 against the Islamic State in Afghanistan.
The explosion in Beirut was so powerful that some observers feared the city had experienced a nuclear detonation of some sort, a fear exacerbated by the mushroom cloud towering over the blast site after the explosion.The governor of Beirut compared Tuesday's horrific explosion to the atomic bombs that devastated the Japanese cities Hiroshima and Nagasaki during World War II."In my life, I haven't seen destruction on this scale," he said.
With an explosive yield of a few hundred tons, the Beirut blast would have been significantly less powerful than the atomic bomb that devastated Hiroshima, which had an estimated yield of about 15 kilotons.The explosive power would, however, be comparable to the lowest-yield B61 nuclear gravity bomb, which is believed to have an explosive yield of about 300 tons.
"The comparison ends there," Hans Kristensen, a nuclear-weaponry expert with the Federation of American Scientists who pointed Insider to unofficial blast-yield estimates of a few hundred tons, said of comparing the explosion in Beirut to a nuclear blast."The pressure wave would be much faster because the energy release from a uncontrolled nuclear chain reaction is much faster than the energy release from a chemical explosion," he said, further explaining that there would have also been intense radiation from a nuclear explosion, including the fallout from detonating a nuclear weapon on the ground.
He argued that a "nuclear explosion would have been far worse, as it would include more extreme thermal and also radiation effects," adding that "nuclear weapons are not just another weapon for a reason."The ammonium nitrate suspected of triggering the massive explosion that caused widespread destruction for miles and left more than 100 people dead and as many as 5,000 injured was confiscated from a cargo ship several years ago, according to Lebanese officials.
The substance, a common fertilizer, is a highly explosive material that has been involved in numerous devastating explosions.For example, a massive 2015 explosion in Tianjin, China, that killed more than 160 people, including 99 firefighters, and damaged more than 300 buildings was partially caused by 800 tons of ammonium nitrate, and the 1947 Texas City, Texas, explosion that killed more than 500 people involved the detonation of 2,300 tons of the substance.The destruction in Beirut is thought to have left more than 300,000 people homeless at a time when the country is struggling both financially and politically.
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