This summary is only based on accounts I collected for and included in my Rodriguez paper.
Bold floor numbers indicate multiple reports for those floors.
64 people on 43 levels below the impact zones reported smelling or contacting jet fuel/kerosene on these floors
North Tower: 87, 85, 83, 81, 78, 63, 62, 60, 57, 53, 52, 47, 46, 40, 39, 36, 35, 34, 33, 29, 27, 25, 13, 12, 9, 7, 6, 5, 4, 3, Plaza level, Concourse, B1, B6, and one unknown floor.
South Tower: 75, 74, 68, 61, 40, 25, Plaza Level, Concourse.
33 people on 18 levels below the impact zones reported seeing fireballs coming from elevator shafts or down hallways
North Tower: 91, 88, 85, 83, 82, 81, 78, 77, 7, Plaza Level, Concourse, B1, B4, Basement (unknown level).
South Tower: 75, 70, Plaza level, Concourse.
29 people on 19 levels below the impact zones described fires on these floors
North Tower: 89, 88, 85, 83, 81, 78, 77, 72, 53, 46, 45, 22, 4, Plaza level, Concourse, Unknown upper levels.
South Tower: 50, Concourse.
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49 people on 23 levels below the impact zones reported seeing elevators/shaft doors blown out or severely damaged.[/FONT]
[FONT=arial,sans-serif] North Tower: 89, 88, 86, 85, 83, 82, 81, 78, 77, 45, 22, 3, Plaza Level, Concourse, B1, B4, Basement (unknown levels). [/FONT]
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South Tower: 78, 74, 44, Concourse, one unknown level. [/FONT]
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8 people on 4 levels below the impact zones were burned in elevators and survived (does not include ST 78th floor)[/FONT]
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North Tower: 78, Concourse, B1.[/FONT]
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South Tower: Concourse.[/FONT]
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14 people on 9 levels below the impact zones survived burns or other injuries from blasts from elevator shafts[/FONT]
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North Tower: 89, 88, 85, 83, 78, Concourse, B1, B4, B6. [/FONT]
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26 people on 17 levels below the impact zones reported fallen elevators (11 were in the elevators and survived).[/FONT]
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North Tower: 91, 88, 78, 47, 42, 27, 15, 7, Concourse, B1, B4, Basement (unknown level), Unknown upper levels.[/FONT]
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South Tower: 19, 12, Concourse. [/FONT]
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13 (non-deaf) people on 12 levels below the impact zone didn’t hear the aircraft impact/explosion on their building[/FONT]
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North Tower: 88, 81, 72, 62, 60, 50, 35, 34, 28, 8, Concourse, B6. [/FONT]
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50 people on 31 levels below the impact zones described significant secondary damage (walls down, doors jammed, broken pipes, stairwells disintegrating, etc. Not intended to suggest structural damage.)[/FONT]
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North Tower: 88, 85, 83, 82, 81, 78, 77, 76, 74, 72, 71, 68, 63, 40, 30, 29, 22, 21, Plaza level, Concourse, B1, B4, B6, Basement (level unknown) [/FONT]
[FONT=arial,sans-serif]South Tower: 76, 70, 68, 67, 40, Plaza level, Concourse. [/FONT]