| Company | Timeline | Status | |
| Earp Consulting Ltd Director • Engineer | 25 Jan 2011←14 Years→Current | Active | |
| Earp Consulting Ltd Director • Engineer | 5 Feb 2008←1 Year 7 Months→1 Oct 2009 | Active | |
3RD Rock Energy Limited Director • Engineer | 31 Dec 2006←10 Years→26 Apr 2017 | Dissolved | |
