![John Edward Siemon](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
John Edward Siemon formerly worked at Opal Horizon Ltd., as Chairman & Managing Director and Australian Institute of Geoscientists, as Treasurer-Queensland Branch.
| Società | Posizione | Fine |
|---|---|---|
Australian Institute of Geoscientists
 Australian Institute of Geoscientists Miscellaneous Commercial ServicesCommercial Services Operates as an institute which represents geoscientists | Corporate Officer/Principal | - |
Opal Horizon Ltd.
 Opal Horizon Ltd. Other Metals/MineralsNon-Energy Minerals Provides opal mining services | Amministratore Delegato | - |
Attive
Inattive
Società nel listino
Aziende private
| Aziende private | 2 |
|---|---|
Australian Institute of Geoscientists
Australian Institute of Geoscientists Miscellaneous Commercial ServicesCommercial Services Operates as an institute which represents geoscientists | Commercial Services |
Opal Horizon Ltd.
Opal Horizon Ltd. Other Metals/MineralsNon-Energy Minerals Provides opal mining services | Non-Energy Minerals |
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