Yet the Pentagon estimates that the operations and maintenance costs will increase by more than 50 percent.

Only 22 percent said they believed the operation would increase those attacks.

Year-round operation would increase schools' annual operating costs by up to $230,000 each.

The operations and maintenance budget would actually increase by 2 percent, officials said.

Ms. Armstrong said she hopes the operation will soon increase its collections to at least 40 tons a day.

Such operations have increased 75 percent since 1989, raising costs and the risk of oil spills.

This is a more restrictive condition that local operations cannot increase the degree of entanglement.

Overall operations increased 37 percent between 1977 and 1987.

The operation is now increasing its outreach to 150 000 cases.

He said his approach to the airline was simple: tighten operations to reduce costs and increase revenues.