| Reference Number | Full Name | Occupation | Disciplines | Company | Audit Expiry Date | Status |
|---|---|---|---|---|---|---|
| 0993 | Danny Williams | Lead Driller | RTY | CC Ground Investigations | 2025-05-13 | Audited |
| 834 | Darren Jones | Lead Driller | RTY | Geotechnical Engineering | 2025-06-26 | Audited |
| 1056 | David Cheetham | Lead Driller | CP | Endeavour Drilling | 2026-02-27 | Audited |
| 1001 | David Dorman | Support Operative | GeoSonic Drilling | 2025-07-10 | Audited | |
| 1013 | David Henderson | Lead Driller | RTY | Structural Soils | 2025-10-28 | Audited |
| 0852 | David Minett | Lead Driller | RTY | Geotechnical Engineering | 2026-02-17 | Audited |
| 0528 | David Nayles | Lead Driller | RTY | BAM Ritchies | 2026-04-03 | Audited |
| 577 | David Pearson | Lead Driller | CP | Igne | 2025-01-23 | Audit Expired |
| 1019 | Dean Shirra | Support Operative | BAM Ritchies | 2025-11-24 | Audited | |
| 0575 | Derek Johnstone | Lead Driller | RTY, SON | Raeburn Drilling & Geotechnical | 2025-02-06 | Audit Expired |
| 0839 | Dilwyn Roberts | Lead Driller | RTY | GeoSonic Drilling | 2025-07-10 | Audited |
| 0737 | Donald Brown | Lead Driller | RTY | Raeburn Drilling & Geotechnical T/A Igne | 2025-08-07 | Audited |
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