| M.P.A. WILLIAMS & ASSOCIATES PTY. LTD. | Former Name (Historical) | ASIC |
| LUBRANIK HOLDINGS PTY. LTD. | Former Name (Historical) | ASIC |
| ATC WILLIAMS PTY LTD | Main Name (Current) | ABR |
| M.P.A. WILLIAMS & ASSOCIATES PTY. LTD. | Main Name (Historical) | ABR |
| M P A WILLIAMS & ASSOCIATES | Main Name (Historical) | ABR |
| MPA WILLIAMS & ASSOCIATES | Main Trading Name (Current) | ABR |
| INGENIERIA ATC-MN LIMITADA | Business Name (Historical) | ABR |
| AUSTRALIAN TAILINGS CONSULTANTS MN INGENERIA LIMITADA | Business Name (Historical) | ABR |
| ALLAN WATSON ASSOCIATES | Business Name (Historical) | ABR |
| ATC WILLIAMS | Business Name (Historical) | ABR |
| AUSTRALIAN TAILINGS CONSULTANTS | Business Name (Historical) | ABR |
| TAILINGS CONSULTANTS - INTERNATIONAL | Business Name (Historical) | ABR |
| OSBORNE GEOTECHNICAL | Business Name (Historical) | ABR |