Complex sentence: In 1998 he conditionally agreed the controversial use of mixed oxide plutonium uranium fuel (MOX) at the Fukushima plant, withdrawing his support after discovering a cover-up of reactor malfunctions and cracks.
Split into simpler sentences: In 1998 he conditionally agreed the controversial use of mixed oxide plutonium uranium fuel (MOX) at the plant. But he withdrew it after discovering a cover-up of reactor malfunctions and cracks.