11.   Engineers are also trying to determine whether there was structural damage.

12.   Engineers were still trying late Wednesday to determine whether the Capitol is structurally sound and hoped to remove the big-rig last night.

13.   Engineers also are trying to determine what is causing minor vibration in some of the landing gear doors.

14.   Even though modern synthetics are durable and soil resistant, fiber engineers are trying to improve them.

15.   In recent days, huge slabs of broken concrete began to shift under their own weight, and engineers have been trying to reinforce the structure.

16.   Meanwhile, as engineers try to make humans look believable in a synthetic background, other technological revolutions are brewing.

17.   On the other end of the technology spectrum, engineers are trying a new approach to keep office workers comfortable while saving energy.

18.   Other engineers are trying to learn what the quake could mean to Californians, their roads and houses.

19.   Some Web engineers are trying to compensate by developing swifter, more efficient spiders.

20.   The engineer tried the Branchville-Redding incline again, the climb made harder by the icy conditions, and once more the train slipped back.