This was shown again on Johnson's Map of 1820, but by 1888 the OS map shows the works as being disused and in 1909 the ten buildings of the complex were demolished leaving little to be seen today.
This location was again depicted on Johnson's Map of 1820, however by 1888 the OS map indicates that the facilities had been abandoned and in 1909 the ten buildings of the complex were demolished, resulting in almost nothing remaining to be seen today.