61.   Workers may have cut off the pipeline before gas was completely cleaned from it, causing the leak, Lin Cheng-nan, a company official, said.

62.   Workers may have cut off the pipeline before gas was completely cleaned from it, causing the leak, said Lin Cheng-nan, a company official.

63.   Workers would then begin looking for what caused the leak and determining how long the plant would be idle.

64.   Workers were to begin looking for what caused the leak and deciding how long the plant would be idle.

65.   Greenpeace analyst Tom Clements said heat generated by the radioactive waste itself could break the seal of the glass and steel casks and cause leaks.

66.   Human error caused the leak, which posed no danger to the staff, reported the Chernobyl press service.

67.   In September last torrential rains caused more leaks which were also repaired.

68.   It is not known what caused the leak.

69.   It did not say what caused the leak or whether there was any damage.

70.   It did not say what caused the leak.