The cost of repairing a Doncaster jail wrecked by rioting inmates last year has been put at more than £1.7 million.
Parts of the damaged wings at Moorland Young Offenders’ Institution, near Hatfield Woodhouse, are now back in use and more restoration work should be completed next month.
The current capacity of the jail is currently around 500 but that will increase when all the work is completed.
It is understood the total cost of putting right the damage caused in November 2010 has come to nearly £1,750,000.
On the first night of the violence at Moorland more than 100 prison officers had to be scrambled to bring the situation under control after about 40 young inmates went on the rampage.
Two nights later there was a further outbreak of trouble among older prisoners and a total of 250 men had to be moved out to other jails.
A police investigation into the riots is still ongoing and files are with prosecutors.
A Prison Service spokesman said: “A full investigation was launched by the National Offender Management Service following disturbances between November 2 and 4, 2010, and work has been undertaken to repair damage. Given that the damage caused to the prison was substantial, it can be expected that the cost of repair is likely to be significant.”