| Ausenco Ltd | Maunsell Australia Ltd |
| Australian Conveyor Technologies | Metso Minerals Pty Ltd |
| BGC Cement Pty Ltd | Midwest Corporation Ltd |
| BGC Contracting Pty Ltd | Mt Gibson Mining Ltd |
| Bulkwest Engineering Pty Ltd | Murchison Mining Ltd |
| CCA Consultants | Merit Engineering Pty Ltd |
| Cooperative Bulk Handling (CBH) Ltd | QMS Engineering Pty Ltd |
| Esperance Port Authority Ltd | Ravensthorpe Nickel Ltd |
| Geraldton Port Authority Ltd | VDM Group Ltd |
| Kerman Contracting Ltd | Worley Parsons Ltd |