> Hayoun assessed that the Beirut incident involved underground explosions. The 43-metre (140-foot) deep crater at the port could not have been left by the expl

> Hayoun assessed that the Beirut incident involved underground explosions. The 43-metre (140-foot) deep crater at the port could not have been left by the explosion of the amount of ammonium nitrate reported by Lebanese authorities, he said: “It would have been shallower, maximum 25 or 30 metres.” To make a claim about “maximum crater depth” seems like you’d need a lot of data about the ground composition below the storage area, and if the anfo was in a concrete silo that could amplify the blast by letting pressure build before failing etc