Weather continues to be a variable says ministerpublished at 14:55 British Summer Time 8 June 2016
Mr Brown says weather has always been the one variable the contractors cannot control.
The economy secretary says the contractors expect to have 94% of the project complete by the end of this year.
He says weather is still a factor and that he cannot control.
The minister says it was in April and May the contractors lost most days due to weather.