| Company | Timeline | Status | |
The Rare Stone Group Limited Director • Finance Director | 9 May 1996←7 Months→12 Dec 1996 | Dissolved | |
| Blackwell Mining And Mineral Engineering Limited Director • Director | 31 Dec 1990←1 Year 4 Months→7 May 1992 | Active | |
| Blackwell Mining And Mineral Engineering Limited Director • Unreported | 1 Jan 1970←22 Years→7 May 1992 | Active | |
