| Site | Location | Inmate capacity | No of staff | Security level | Baseline | Follow-up | Smoke-free at baseline | No of areas tested |
| Prison 1 (P1) | Triangle | 1000 | 700 | Maximum | 9 Nov 2005 | 6 Nov 2006 | No | 3 |
| Prison 2 (P2)* | Triangle | 1012 | 545 | Medium | 9 Nov 2005 | 6 Nov 2006 | No | 3 |
| Prison 3 (P3)† | Piedmont | 144 | 75 | Minimum | 21 Nov 2005 | 23 Oct 2006 | Yes | 4 |
| Prison 4 (P4) | Piedmont | 766 | 385 | Medium | 21 Nov 2005 | 23 Oct 2006 | No | 4 |
| Prison 5 (P5) | East | 325 | 91 | Minimum | 8 Dec 2005 | 9 Oct 2006 | Yes | 4 |
| Prison 6 (P6) | North | 484 | 100 | Medium | 28 Nov 2005 | 5 Dec 2006 | No | 4 |
*Facility houses 18–24-year-old males only. †Women’s facility.