| Company | Timeline | Status | |
| Macbag Limited Director • Quarry Master | 23 Apr 1996←24 Years→5 Jan 2021 | Dissolved | |
| Riskend Aggregates Limited Director • Director | 23 Mar 1989←18 Years→17 Nov 2007 | Active | |
| Riskend Aggregates Limited Secretary • Director | 23 Mar 1989←18 Years→17 Nov 2007 | Active | |
| M. Wallace Clelland & Company Limited Director • Quarry Master | 23 Mar 1989←18 Years→17 Nov 2007 | Active | |
| M. Wallace Clelland & Company Limited Secretary • Quarry Master | 23 Mar 1989←18 Years→17 Nov 2007 | Active | |
| Barrwood Developments Limited Director • Quarrymaster | 23 Dec 1988←18 Years→17 Nov 2007 | Active | |
| Barrwood Developments Limited Secretary • Quarrymaster | 23 Dec 1988←18 Years→17 Nov 2007 | Active | |
