▁no ▁prison ▁staff ▁were ▁injured . ▁According ▁to ▁Fitz ger ald ▁( 1 9 7 7 ) ▁" Re in for c ements ▁arrived , ▁and ▁within ▁fifteen ▁minutes ▁these ▁' v icious ▁br utes ', ▁who ▁for ▁some ▁two ▁hours ▁had ▁terror ized ▁well - ar med ▁prison ▁staff , ▁and ▁effectively ▁controlled ▁the ▁prison , ▁had ▁surrender ed ▁and ▁been ▁locked ▁up ▁again ". ▁ ▁Post - 2 0 0 0 ▁history ▁D art mo or ▁Pr ison ▁received ▁a ▁Gra de ▁II ▁her itage ▁listing ▁in ▁ 1 9 8 7 . ▁ ▁In ▁ 2 0 0 1 , ▁a ▁Board ▁of ▁Vis itors ▁report ▁condem ned ▁san itation , ▁as ▁well ▁as ▁highlight ing ▁a ▁list ▁of ▁ur gent ▁rep airs ▁needed . ▁A ▁year ▁later , ▁the ▁prison ▁was ▁converted ▁to ▁a ▁Category ▁C ▁prison ▁for ▁less ▁violent ▁off enders . ▁ ▁In ▁ 2 0 0 2 , ▁the ▁Pr ison ▁Reform ▁Trust ▁war ned ▁that ▁the ▁prison ▁may ▁be ▁bre aching ▁the ▁Human ▁Rights ▁Act ▁ 1 9 9 8 ▁due ▁to ▁severe ▁over c row ding ▁at ▁the ▁j ail . ▁A ▁year ▁later , ▁however , ▁the ▁Chief ▁Ins pect or ▁of ▁Pr isons ▁declared ▁that ▁the ▁prison ▁had ▁made ▁substantial ▁improvements ▁to ▁its ▁management ▁and ▁regime . ▁ ▁In ▁March ▁ 2 0 0 8 , ▁staff ▁at ▁the ▁prison ▁passed ▁a ▁vote ▁of ▁no ▁confidence ▁in ▁the ▁governor ▁Ser ena ▁W att s , ▁claim ing ▁they ▁felt ▁bul lied ▁by