ere assigned to six separate tiers or groups of cells, three of which were accessible via stairs leading up from the common area on the ninth floor (Upper Tiers—G, J, and L Tiers) and three of which were accessible via stairs leading down from the common area on the ninth floor (Lower Tiers—H, K, and M Tiers)

ere assigned to six separate tiers or groups of cells, three of which were accessible via stairs leading up from the common area on the ninth floor (Upper Tiers—G, J, and L Tiers) and three of which were accessible via stairs leading down from the common area on the ninth floor (Lower Tiers—H, K, and M Tiers)

ere assigned to six separate tiers or groups of cells, three of which were accessible via stairs leading up from the common area on the ninth floor (Upper Tiers—G, J, and L Tiers) and three of which were accessible via stairs leading down from the common area on the ninth floor (Lower Tiers—H, K, and M Tiers)

ere assigned to six separate tiers or groups of cells, three of which were accessible via stairs leading up from the common area on the ninth floor (Upper Tiers—G, J, and L Tiers) and three of which were accessible via stairs leading down from the common area on the ninth floor (Lower Tiers—H, K, and M Tiers)