Seismological data suggests that six blasts preceded the Beirut port explosion, the last of them combustion of fireworks that apparently set off a warehouse full of ammonium nitrate, an Israeli analyst said on Thursday. The six blasts were at 11-second intervals during the Aug. 4 incident, with the main explosion following the last by around 43 seconds, Boaz Hayoun of Israel`s Tamar Group told Reuters.
