41.   His cooling system failed on one of the hottest days of the year, and the thin aluminum seat on which he sat became a hot coal.

42.   If the cooling system were to fail, the water in the tank could boil away and cause a meltdown, Galatis warned.

43.   If the cooling system is up to the task, the only real concern is premature camshaft wear.

44.   If operators had closed the valve and turned on an emergency cooling system, the accident could have been averted.

45.   If the bottle looks like it has seen its share of brown cruddy stuff, the cooling system has lacked attention.

46.   In April, the cooling system began leaking antifreeze.

47.   In recent months, the Mir has endured a fire, the failure of its oxygen canisters and a leak in its cooling system as well as the collision.

48.   In subsequent incidents, more oxygen generators failed, the cooling system leaked, and the carbon dioxide removal system was disabled.

49.   In the new herbarium, the specimens will be preserved by a innovative cooling system.

50.   Inefficient cooling systems have been partially blamed for huge electricity demand spikes in the West that have produced rolling blackouts in California and power shortfalls in other states.