ArmedCorgi
.475 A&M Magnum
You are probably right, but do you think they would have released the info right away if it was a radioactive explosion? Are the Lebanese large consumers of fireworks?I think sniffers would have already detected a radioactive spike environmentally. The simplest explanation is usually the most plausible. Explosion in fireworks storage facility that also store some form of ammonium nitrate.
If so, absolutely poor judgment of what should be common sense.