- Skillset
- A1 Earthworx ( not a lot )
- Bio-Carbon Engineering
- Castlereagh Contracting Services
- Heavy Duty Contracting
- Sj Landscapes
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| - A1
- Gricks Drilling
- Hagstrom Drilling (when required)
- JRRichards
- MBGS
- VacSafe
| - Geospatial Dynamics
- Pacific Environmental
- Ecological Australia
| - JR Richards
- Marine Pollution Research
- Renewable Oil Services Pty Ltd
| - CBased Environmental
- Ecotech
- Groundwater Exploration Services
- Novecom
- Global Acoustics
- Geospatial Dynamics
- Pacific Environmental
- Ecological Australia
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