| Mills | FSC | SFI | CSA | ISO 14001 |
| Ashdown | Chain-of-Custody | Certified | - | 2003 |
| Columbus | - | Certified | - | Certifiable |
| Dryden | - | - | Chain-of-Custody | Certifiable |
| Espanola | Chain-of-Custody | - | - | 1998 |
| Hawesville | - | Certified | - | Certifiable |
| Johnsonburg | Chain-of-Custody | Certified | - | Certifiable |
| Kamloops | Chain-of-Custody | Certified | Chain-of-Custody | 2001 |
| Kingsport | - | Certified | - | Certifiable |
| Marlboro | - | Certified | - | Certifiable |
| Nekoosa | Chain-of-Custody | Certified | - | 2004 |
| Plymouth | - | Certified | - | Certifiable |
| Port Huron | Chain-of-Custody | - | - | 2003 |
| Rothschild | Chain-of-Custody | Certified | - | Certifiable |
| Windsor | Chain-of-Custody | Certified | - | Responsible Care |
| Woodland | Chain-of-Custody | Certified | - | 2002 |