HARRISON, N.Y. (AP) _ Passengers were evacuated from the Westchester County Airport for two and a half hours Monday after a chemical spill in the terminal sickened several workers.

Authorities closed the airport at about 4:30 p.m., after coolant from the air-conditioning system sickened three baggage handlers and four police officers, said Susan Tolchin, a spokeswoman for Westchester County Executive Andrew Spano. It was reopened at around 7:05 p.m., she said.

Those who suffered nausea and dizziness were treated at area hospitals.

Tolchin said a heating pipe burst, leaking the coolant Glycol onto the baggage conveyer belt and damaging some luggage. Fumes entered the airport's ventilation system.

The airport was reopened after officials declared the glycol non-toxic and non-hazardous, she said.

At least 25 outgoing flights were delayed. Several arriving flights were diverted to other airports. The airport handles about 90 flights a day.