31.   What Gleason and other landfill engineers are most concerned about is protecting environmental controls, like the methane gas pipes and ground water protection systems.

32.   Wright-Pat research is also developing and testing advanced structures, thermal protection systems and guidance systems for the space plane.

33.   Yet he also acknowledged that no protection system would be perfect.

34.   Almost all software, telecommunications and computer firms use sophisticated codes and protection systems to safeguard their information in cyberspace.

35.   Based in Bermuda, Tyco is a leader in making fire protection systems and providing electronic security services, and also makes electrical and electronic components.

36.   But the other measures, such as better brakes and rollover protection systems, had been planned for some time, officials said.

37.   He also said the old fire protection system had been deactivated while a new one was being installed.

38.   He said that the engines have a four-step fire protection system, of which the fire extinguisher bottles are the last step.

39.   Here, you can learn about home theatres, home alarm protection systems and whatever else connected to modern home amenities of today.

40.   It said managers were trying to determine the efficiency of worker protection systems and the effects of exposure to radioactive materials.