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| Ideally, the powder would be remotely ignited at the top end of each 3-story section shortly before the intended collapse time. If the treatment had been applied to two 36-feet sections of column, it would have been necessary for the perpetrators to carry out the relatively easy job of planting detonators in another 3 floors above. Marsh occupied 7 or 8 adjacent floors at WTC 1, and Fuji Bank had 4 floors at WTC 2 which would allow a third of columns to be treated over a 72-feet length. If they detonated from the bottom, it would increase the risk of too much molten iron collecting at the bottom and prematurely melting its way through the ¼ inch thick steel in the minutes prior to collapse, as happened with WTC 2 where Fuji Bank had only 4 floors. However, melting 72 feet of every exterior column would have been overkill, especially considering that the perpetrators would have also targeted box columns in the core, down in the basement. They probably omitted some columns and / or mostly limited themselves to 36 feet of column. |