1. a) What is Eurocontrol?
b) How many flights did Eurocontrol estimate would take place in European airspace on Friday? How many flights take place on an average day?
c) By how much will trans-Atlantic flights be reduced on Friday?

2. As limited airspace was opening in Scotland, Ireland and Sweden, in what countries were air-traffic controllers closing airspace?

3. What type of businesses will benefit from the disruptions to air travel?

4. How many passengers worldwide could be affected if the closures continue for three days?

5. How will commerce be affected by the airspace closures?

6. When are the eruptions expected to end and therefore bring air traffic back to normal?