9/11 - Strange smoke near the base of WTC Tower One

Strange smoke near the base of WTC Tower One

These pictures are from an excellent series of photos that are posted here.

There appears to be an unexplained explosion in the lower floors of Tower 1 - see the photos below.

	This was the normal view taken some days before 9/11. This is the lower section of Tower One - the first to be hit by a plane.
	Same view on 9/11, taken a few minutes after the other tower has been hit by the second aircraft. This is from the photo at the top of the page, which can be seen full size here.
	Another shot a few seconds later - the smoke is drifting away to the right. The square grid pattern of the puffs of smoke suggests the windows of that part of the tower have been blown out by an explosion, or explosions, happening inside the tower. The full photo is here.
	The smoke carries on drifting around the corner of the tower. Full photo.
	The same view some time later as Tower 2 came down. Full photo.