21.   Bureau engineers have said they named the system Carnivore to signify that it found the meat of an investigation.

22.   But auto safety engineers here say privately that it is nearly impossible to design a small car that will do well in such a wreck.

23.   But engineers said that while it is possible for cold temperatures to break water lines, it is unusual for the larger pipes to be damaged.

24.   But engineers say that the two methods are probably similar enough that a compromise can be reached, though probably not before the March meeting.

25.   But Boeing engineers say the scenario involved used a highly unlikely chain of failures.

26.   But designing and making the devices are not simple tasks, engineers say.

27.   But during Apollo, there was little question the money would be there, engineers said.

28.   But engineers say that this is not big deal.

29.   But engineers say the two terraces are not stable.

30.   But even if they are sound, the engineers said, subway service will probably not resume through those tunnels for about six months.