Dr Judy Wood delivered her performance on Coast to Coast AM last night, eagerly awaited by the Branch Hoaglandians because it was her work that Richard Hoagland ripped off for his recent conference presentation.
Dr Wood spent some time educating the audience about the importance of real forensic evidence as opposed to speculation, then almost immediately broke her own rules by making an ENORMOUS leap of conjecture. The twin towers were dustified, she announced, by a directed energy weapon. When George Noory asked her where she thought the actual weapon itself was situated, she dismissed that as unimportant.
I really have neither the time or the skill to analyze Wood's data—in any case, others have already done that quite well. I thought, however, I might provide an additional data point by estimating the total mass of drywall in the North Tower. As anyone with any construction experience can tell you, sheetrock dustifies very nicely, often when you wish it wouldn't. It's just loose chalk between sheets of paper, really. Was the dust cloud that drifted over Lower Manhattan mostly gypsum? Let's see....
The North Tower was 1,368 ft tall, cross-section 208 x 208 ft. If you imagine the entire building clad in drywall, the area would be:
1368 x 208 x 4 = 1,138,176 sq ft
assuming drywall mass 1.6 lb/sq ft, total wall mass is almost 1000 tons (US).
As for ceilings, from the total ceiling area of 208 x 208 = 43,264 sq ft we need to subtract 80 x 138 = 11,040 sq ft for the elevator well.
So ceiling area = 32,224 x 110 floors = 3,544,640 sq ft or 2,836 tons.
Now, I make no pretense that this is in any way an accurate measure. It's just a little better than pulling a random figure out of my ass. It's "in the ballpark," as the sports fans say. I'm just saying that around 1000 tons of drywall would have dustified immediately as the tower collapsed, and over 500,000 cubic feet of air would have been pumped out of each floor as it pancaked, helping to form the white dust cloud. It's a lot harder to estimate how much of the 2,836 tons of ceiling would also have crumbled, but very likely some of it.
Judy Wood appears to think that the cloud contained most of the structural steel, too. Put me down as a sceptic on that.