| # | Entity | Status | State |
|---|---|---|---|
| 1 | 99 712 095 861 J.A DUFF & M.H DUFF & W.E DUFF |
ABN Cancelled | NSW 2871 |
| 2 | 22 035 993 564 A.W DUFF & H.R DUFF & B.M FLETCHER & A.R LINCLETTER |
ABN Cancelled | WA 6163 |
| 3 | 43 117 708 985 K DUFF & M.W DUFF |
ABN Cancelled | TAS 7250 |
| 4 | 45 961 982 504 B.E DUFF & W.M DUFF |
ABN Cancelled | VIC 3145 |
| 5 | 57 433 638 095 C.L DUFF & M.W DUFF |
ABN Cancelled | QLD 4300 |
| 6 | 44 128 649 228 R.J DUFF & M.J GRACIE & P.W GRACIE & L.M JONES |
ABN Cancelled | QLD 4454 |
| 7 | 98 389 827 432 J.W DUFF & M.J RELF & M.K STOCKTON |
ABN Cancelled | NSW 2527 |
| 8 | 13 741 082 254 G.W DILLON & J.M DUFF |
ABN Active | NSW 2440 |
| 9 | 50 781 847 576 F W & K M DUFF |
ABN Cancelled | TAS 7300 |
| 10 | 68 896 751 806 M.J DUFF & D.C RATTEN & J.W SIMMONDS |
ABN Active | VIC 3770 |
| 11 | 75 606 917 874 W DUFF & M.A O'KEEFFE |
ABN Cancelled | VIC 3055 |
| 12 | 91 441 278 594 B.W BOYCE & C.C DUFF & M LONGHURST |
ABN Cancelled | QLD 4123 |
| 13 | 95 572 638 796 M.A DUFF & G.P LYNCH & W.R LYNCH |
ABN Active | NSW 2794 |
| 14 | 65 049 383 284 MAURICE WAYNE DUFF M W DUFF |
ABN Cancelled | TAS 7249 |