41.   Debris in the pipe caused the leak, he said.

42.   Donen said the leak was caused by rusting steel drum barrels storing low-level nuclear waste and by rainwater seeping into the storage pits.

43.   Emergency workers from the company and local fire brigades were trying Monday to contain the oil and determine what caused the leak.

44.   Faulty packaging may have caused a leak that led to the deadly overdose.

45.   Experts called to the scene said the leak was caused by faulty connections in the kitchen.

46.   Five people have been arrested for drilling into a gas pipe, causing a leak which was ignited by accident.

47.   Ford Motor Co. is working on a remedy for an engine defect that is causing oil leaks in some truck models, a spokesman for the automaker said Monday.

48.   Neither malfunctions caused radiation leaks at the plant, Energoatom said.

49.   Officials say none of the accidents has caused radiation leaks.

50.   Officials have cut gas service for fear of causing dangerous leaks of highly flammable natural gas.