The Atomic Weapons Establishment is due at Reading Magistrates Court later over a fire at its site at Aldermaston in Berkshire.
A worker received burns when the blaze broke out in August 2010. The company faces three charges brought by the Health and Safety Executive.
More top news
A lucky football fan is heading to this weekend's FA Cup Final at Wembley after picking which had been fired into space.
The families of the three people including a young girl - stabbed to death in Oxfordshire - are in a state of 'shock and disbelief'.
Wednesday's Pollen Forecast