Prisoners moved from rock breaking to goods production with trades including boot making, tailoring, tin smithing, blacksmithing, carpentry and masonry. There was public opposition as the free labour of prisoners was seen as unfair competition against private industry, consequently Government departments used most products. During the 1960s small industries were established north of the prison walls with facilities for spray painting, sheet metalwork and brick making. A decision was made in 1968 to build a new industries complex. Construction was from 1977 to 1982, with the complex opening in November 1984.