[Calpernia]

>>>Ammonium nitrate is just the oxidizing element. It needs fuel. Standard "gunpowder" employs powdered charcoal. The OKC bombers mixed the ammonium nitrate with diesel fuel oil.

Yes they did. Probably off topic from your point; but, do you think that was the only explosive that brought the building down? (personally, from your background)

[Myrddin]

The placement of the truck and volume of explosive was probably adequate to shatter all the windows. I honestly think the basement of the building had additional explosives. The damage to the internal support pillars is not consistent with a truck bomb in front of the building. You do that kind of damage with a properly tamped high explosive to direct the force against the object to be destroyed.

Consider the placement of the truck on the street and the amount of damage done to buildings in the opposite direction from the OKC building. Lots of shattered glass. Not much more.