1. Killer Smog A deadly story set in a small Pennsylvania town.

2. Donora…

3. …is a mill town on the Monongahela River

4. Location of the Donora Zinc Works and the American Steel & Wire Plant

5. Smoke was released into the air every day from the zinc smelter process.

6. October 26 th, 1948 One of the worst air pollution disasters in the nation’s history happened here…

7. Smog was so thick that you could hardly see…

8. 12 NOON

9. 7000 residents (1/2 of the town’s population) had respiratory symptoms…

10. Some had nausea and vomiting, headaches and abdominal cramps as well.

11. After 5 days, rain began to fall and wash the pollutants from the sky.

12. In a 12-hour period, 18 people died. Within a month, the number was up to 70.

13. How did this happen?

14. BREAK-OUT RESEARCH: 1. TEMPERATURE INVERSIONS 2. ZINC SMELTING PROCESS