239 - AO-C02 | Drill Rigs & Blast Hole Changed Conditions Checklist
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239 / AO-C02 — PRODUCTION DRILL CHANGED CONDITIONS, WEATHER AND EXPOSURE
AO-C02 is an original one-page editable Word changed-conditions and weather/exposure checklist for surface drilling near blast holes and highwalls. It begins with crest/flyrock exclusion because shifting weather, geotechnical conditions or a changed blast zone can invalidate the earlier drilling workface assessment.
WHY THIS DRILL WORKFACE CONTROL MATTERS
Severe weather can trigger suspension, while a new water ingress condition or changed collar record affects the blasting handover. Charged-hole buffers and rig dust capture also need re-verification when shifts, machinery or exclusion maps change. The source makes that changed-condition decision traceable.
SEVEN SOURCE-DEFINED WORKFACE VERIFICATIONS
1. Highwall crest setback and mine flyrock/explosives exclusion briefed to drill crew. 2. Dust extraction and silica respiratory protection maintained at production rig. 3. Hole collar protection, depth, deviation and water ingress documented for blast team. 4. Charged holes and exclusion buffers marked under mine blasting authority control.
5. Storm/lightning, misfire suspicion and blast notification included in STOP criteria. 6. Drill handback reconciles open holes and transfers pattern records to mine blast officer. 7. Approved survey pattern/geotechnical pad release show authorised hole locations, burden and edge limits.
REAL SOURCE FIELDS, DEFECTS AND MINE RELEASE
The original seven Y/N/N-A WORKFACE VERIFICATION rows begin at highwall and dust controls, then hole data, charged buffers, lightning/misfire stops, blast-officer handback and finally approved survey/pad release. Evidence / defect / action must refer to real site-controlled documents, not a fabricated wind-speed or hole-depth value.
Any NO, N/A or changed condition requires evidence and justified action. The printed HOLD stops work for missing clearance, isolation, protection or critical evidence.
Complete MINE / PIT / WORK AREA, WORK ORDER / MINE ZONE, DATE / SHIFT / PERMIT and CONTRACTOR SUPERVISOR. Contractor and MINE RELEASE AUTHORITY / SIGNATURE with DATE / RELEASE REF are separate; no self-approved drilling or blasting permission.
BUY THIS SINGLE OR THE COMPLETE MINE SAFETY SYSTEM?
This identical original editable purchaser-licensed Word DOCX is ALREADY INCLUDED in the full 386-document Surface Mining Checklist Package and complete Surface Mining Contractor H&S File. The larger set brings all these specialised forms with wider contractor management controls, without requiring a separate purchase of this Single. The mine blast officer retains control of charged-hole areas and authorisations.
