United wants to shift 30 percent of its operations to the new airline with a working name of Starfish.

One company has announced layoffs for 400 workers, and another is studying how to trim as much as 40 percent of its operations.

United wants to shift 30 percent of its operations to that new carrier, which would fly out of United's hubs.

Mr. Clark said contributions that were now deductible pay for about 58 percent of the ministry's operations.

Further, Delta sold food only on flights of three hours or more, or about 15 percent of its operations, he said.

The company also sold 20 percent of its international operations in a July public offering.

By comparison, only 60 percent of the domestic industry's operations use the continuous-casting process.

The company expects savings account will represent a 10 percent of its operations by 2014.

About 48 percent of Lear Siegler's operations have been put on the block this year.

About 60 percent of the airport's operations are military and the rest are civilian.