There is a video supposedly showing the intact RV while a blast is coming from the other side of the street, i.e. from where the building is. There are pictures with square holes in the ground where the manholes where -- just the lids were blown upwards. This does not look right for pressure from above. An anon on 4chan pointed out that an explosion creates a vacuum in the aftermath of the bang, but that sucking is not enough to rip manhole covers out of their bearings. This could be verified by looking at specs. (Vacuum = 1 atmospheric pressure; explosion = many atmospheric pressures.) I assume that the RV explosion was a decoy, perhaps never happened.
What explosive was used? Is the street darkened with soot?
There is a video supposedly showing the intact RV while a blast is coming from the other side of the street, i.e. from where the building is. There are pictures with square holes in the ground where the manholes where -- just the lids were blown upwards. This does not look right for pressure from above. An anon on 4chan pointed out that an explosion creates a vacuum in the aftermath of the bang, but that sucking is not enough to rip manhole covers out of their bearings. This could be verified by looking at specs. (Vacuum = 1 atmospheric pressure; explosion = many atmospheric pressures.) I assume that the RV explosion was a decoy, perhaps never happened.
What explosive was used? Is the street darkened with soot?