| # | Entity | Status | State |
|---|---|---|---|
| 1 | 47 659 054 010 GREAT NORTHERN DRILLING PTY LTD |
ABN Cancelled | WA 6017 |
| 2 | 38 113 727 197 DAVID FRANK BREESE great northern drilling |
ABN Cancelled | NT 0822 |
| 3 | 42 954 150 087 ANTONIO HAROLD PUGLIA GREAT NORTHERN DRILLING AND IRRIGATION |
ABN Active | WA 6532 |
| 4 | 49 452 269 852 THE RCB FAMILY TRUST GREAT SOUTHERN DRILLING |
ABN Cancelled | WA 6010 |
| 5 | 51 668 417 767 WESTERN CORE GROUP PTY LTD GREAT WESTERN DRILLING |
ABN Active | NSW 2756 |
| 6 | 60 751 236 927 DAVID M GOLBY GREAT LAKES DRILLING |
ABN Cancelled | NSW 2423 |
| 7 | 49 452 269 852 THE RCB FAMILY TRUST GREAT SOUTHERN DRILLING |
ABN Cancelled | WA 6010 |
| 8 | 74 905 512 107 The trustee for The RCB Trust Great Southern Drilling |
ABN Active | WA 6010 |