| Reference Number | Full Name | Occupation | Disciplines | Company | Audit Expiry Date | Status |
|---|---|---|---|---|---|---|
| 0980 | Jason Mulhern | Lead Driller | CP | Central Alliance | 2025-02-18 | Audited |
| 0541 | Jason Soper | Lead Driller | CP | BAM Ritchies | 2024-05-15 | Audited |
| 0719 | Jefferson Fennell | Lead Driller | RTY | CC Ground Investigations | 2025-02-27 | Audited |
| 0679 | Jeremy Joyce | Lead Driller | RTY | Marriott Geotechnical Drilling | 2024-03-26 | Audit Expired |
| 0891 | Joe Robinson | Support Operative | Marriott Geotechnical Drilling | 2024-03-19 | Audit Expired | |
| 0527 | John Adam | Lead Driller | CP, DS | BAM Ritchies | 2024-04-18 | Audit Expired |
| 0786 | John Cameron | Lead Driller | DS | Causeway Geotech Ltd | 2024-10-19 | Audited |
| 637 | John McCann | Support Operative | Igne | 2025-01-23 | Audited | |
| 0854 | John Morrison | Lead Driller | CP | Dunelm Geotechnical & Environmental | 2024-10-31 | Audited |
| 0960 | John Penwright | Lead Driller | RTY | ADP Group | 2025-01-14 | Audited |
| 0915 | John Rodgman | Lead Driller | RTY | Borehole Solutions | 2024-06-18 | Audited |
| 0658 | John Wilkinson | Lead Driller | CP | igne | 2025-01-22 | Audited |
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