51.   Engineers are also working on new methods to protect the fuel tank from punctures.

52.   Engineers were working to restore power to parts of the Sri Lankan capital, an hour after a nationwide power cut plunged the country into darkness Friday.

53.   Engineers worked to format a hard drive for one of the backups, which was replaced by a spare computer aboard the station on Friday.

54.   Engineers also worked to make the interior quiet enough that passengers in the third row could be heard by the driver.

55.   Engineers have been working without a contract for more than three years.

56.   Engineers on Wednesday worked at the explosion scene to repair doors and windows of damaged buildings and electricity and telephone lines.

57.   Engineers were working Sunday to defuse some of the remaining land mines.

58.   Engineers worked around the clock to try to plug the leak.

59.   Engineers are working on seismic reinforcement as they piece together and prop back up the buildings, authorities say.

60.   Engineers have been working for decades to develop inexpensive ways of desalinating sea and brackish water.