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1. Fire also forced the evacuation of a Federal Aviation Administration control center in San Diego, disrupting air travel across the nation.

2. The control area will gradually expand in stages after November 1 in light of the air pollution.

3. The fund will be mainly used for control and protection of air and water, as well as waste disposal and treatment.

4. In an assessment of national environmental protection and pollution control in 2007, the city was rated " substandard " for its air pollution in winter.

5. The move was part of a collection of air control measures rolled out by Shanghai Municipal Environment Protection Bureau.

6. Wang Liya said air control departments of the two sides had made thorough discussions on matters concerning air traffic control.

7. An air control region with terminals shared by both military and civil aviation will be set up in Beijing before the end of 2007.

8. Ward said she didn't witness the crash but noticed a rising plume of smoke behind the base's air control tower.

9. Despite the difficulties of private aviation in China such as air traffic control, the corporate jet business has gained sudden attention from global plane makers since 2010.

10. The Swiss air traffic control agency Skyguide said it had not heard of the RIA report and declined to comment.