The link had lots of pop-up ads but X them out and it is quite readable.
"When Nasrallah threatened Haifa in 2016, he said it “would be exactly like a nuclear bomb... any rocket that might hit these tanks is capable of creating an effect similar to a nuclear bomb.” Shortly after the explosion, Twitter users speculated that it could have been one such rocket that caused the explosion.
Though this was quickly ruled out, Beirut was devastated. "

"Britain said on Wednesday that it was too early to speculate on the cause of a massive blast that ripped through Beirut killing at least 100 people.
President Donald Trump on Tuesday cast the explosion as a possible attack, though Lebanese leaders said that it was likely caused by highly explosive material that had been stored at warehouses in the capital for years."

"When asked by a reporter if he was confident that it was an attack, Trump said: ``I met with some of our great generals and they just seem to feel that it was.'' Tho unfounded it could be an excuse for war? Perhaps, wars are politically useful.
https://economictimes.indiatimes.com/news/international/world-news/massive-explosion-shakes-lebanons-capital-beirut/articleshow/77356143.cms

Read more at:
https://economictimes.indiatimes.com/news/international/world-news/massive-explosion-shakes-lebanons-capital-beirut/articleshow/77356143.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst
https://www.haaretz.com/middle-east-news/u-k-rebukes-trump-too-early-to-speculate-on-cause-of-massive-blast-in-beirut-1.9047949

The fact that there was a fire, probably in the fireworks factory suggests that a $2 rocket was the cause of the major blast. A $2 rocket is not a ICBM, a watchman smoking, a rat/mouse biting on something to cause a spark in unstable fireworks; it does not take much!
"Fireworks and ammonium nitrate appear to have been the fuel that ignited a massive explosion that rocked the Lebanese capital of Beirut, experts and videos of the blast suggest.

The scale of the damage — from the epicenter of the explosion at the port of Beirut to the windows blown out kilometers (miles) away — resembles other blasts involving the chemical compound commonly used as an agricultural fertilizer.

But the compound itself typically doesn’t detonate on its own and requires another ignition source. That likely came from a fire that engulfed what initially appeared to be fireworks that were stored at the port. "
https://apnews.com/cbeb3263d6fc30a63a0300f588e7207b

Fireworks are made to explode, that is why you buy them. "The number of dead from a massive explosion at a fireworks factory in north eastern China has risen to at least 19 workers, with five still missing, according to the official Xinhua News Agency.
Up to 50 people were working at the factory in the city of Yichun in Heilongjiang province when it was rocked by the explosion on Monday morning. It damaged nearby buildings and caused secondary blasts, according to a statement posted on the local government's website. A total of 153 people were injured by the explosion. " August 2010
https://www.bbc.com/news/av/world-asia-pacific-10995938/fatal-blast-at-china-fireworks-factory

"On April 16, 1947, one of the largest industrial explosions ever killed an estimated 576 people in Texas City, about 40 miles south of Houston.

Recently uncovered video from the incident shows that smoke and flames that raged in Texas City after the deadly blasts.

A cargo ship called the Grandcamp, which had previously been docked in Houston, was docked in Texas City. While there, it was being loaded with ammonium nitrate fertilizer, an extremely flammable substance."

If you google Ammonium Nitrate Explosions there is a long list of them.