1. World Trade Center Dust

2. Dust from South Tower destruction rose 1,000+ feet

3. Within one minute of the North Tower's collapse, an immense cloud of thick dust engulfed most of the southern end of Manhattan.

4. North Tower dust moved east and then to the south

5. Dust samples taken from Cortlandt, Market, Cherry Streets
Cortlandt St
Dust Travel

6. The dust samples were fluffy in composition and light pink to light gray in color
Made mostly
of destroyed
building
materials

7. Glass fibers, cellulose, and
cement made up the largest
percentage of sample composition
Towers
built from
1968 to
1972
Asbestos
was found
to be 3%
at Market
Street

8. Concentrations of PAHs found in all three samples

9. Indoor deposits
Not properly cleaned
Long-term exposure
Only time will tell

10. Questions?