{"schemaVersion":"1.0","exportedAt":"2026-05-15T12:39:08.359Z","occupation":{"soc":"47-5043.00","title":"Roof Bolters, Mining","group":"Construction & Extraction","sector":"21","jobZone":2,"jobZoneInferred":false},"framework":{"version":"v.26.05","description":"","contextCovered":"Underground hard-rock and coal mining environments where roof bolters operate self-propelled hydraulic bolting machines, conduct atmospheric testing, manage ventilation, and maintain ground control safety across Job Zone 2 skill levels.","levels":{"emerging":{"label":"Emerging","statements":["Bolt hole drilling procedure — follow step-by-step under direct supervision to place holes at specified distances from ribs in an underground mine roof.","Loose rock identification — recognize visually and report hazardous material that requires pulling down before bolting operations begin.","Bolting machine positioning — assist with aligning self-propelled bolting machines and inserting drill bits into chucks under a journeyman's guidance.","Pre-operation safety checks — complete a supervised checklist of equipment inspections before activating any bolting machinery on shift.","Methane gas testing — perform basic atmospheric tests using handheld detectors under direction to identify gas presence prior to drilling.","Hydraulic bolt insertion — operate the hydraulic mechanism of a bolting machine with close oversight to force bolts into pre-drilled roof holes.","Ventilation curtain hanging — assist in installing ventilation curtains and tubes along designated airways under a crew leader's instruction.","Rock dusting procedure — apply rock dust to surfaces after bolting operations following prescribed coverage guidelines in an underground coal mine.","Hand-tool and equipment handling — use wrenches, torque tools, and drill bits safely while following site lockout/tagout protocols.","Workplace communication — listen attentively and relay clear verbal reports to supervisors regarding observed roof conditions or equipment issues."]},"developing":{"label":"Developing","statements":["Roof bolt hole spacing — drill bolt holes at correct rib and adjacent-bolt distances with minimal oversight, maintaining pattern accuracy across a full section.","Unsupported rock removal — pull down loose or unstable roof material independently, applying judgment on what requires scaling before bolting proceeds.","Bolting machine setup — position and configure self-propelled bolting machines on varied roof heights and alignments without supervisory prompting.","Equipment pre-shift inspection — execute comprehensive safety checks on hydraulic systems, drill assemblies, and controls and document findings on shift reports.","Gas monitoring routine — conduct scheduled methane tests and interpret readings against permissible exposure limits, adjusting work pace or halting operations as needed.","Hydraulic bolt placement — consistently drive bolts to specified torque and depth using the bolting machine's hydraulic system across routine production cycles.","Ventilation system maintenance — hang, reposition, and inspect curtains and tubing to maintain airflow patterns in changing mine headings.","Rock dust application quality — dust freshly bolted areas to uniform coverage standards, checking adherence to mine safety regulations on a routine basis.","Troubleshooting minor equipment faults — diagnose and resolve common hydraulic leaks, stuck drill bits, or sensor errors to restore production with minimal downtime.","Crew coordination — coordinate task sequencing with fellow bolters and shuttle car operators to maintain safe and efficient roof support progress."]},"proficient":{"label":"Proficient","statements":["Complex roof bolt patterns — design and execute varied bolt hole layouts to meet engineering specifications on irregular or fractured roof conditions in challenging underground sections.","High-risk scaling decisions — independently evaluate and remove hazardous loose rock in non-routine conditions, applying critical judgment to protect crew safety.","Full equipment lifecycle management — set up, calibrate, operate, and perform preventive maintenance on bolting machines across the complete operational cycle without oversight.","Advanced methane monitoring — interpret atmospheric data trends, coordinate with ventilation crews, and initiate corrective actions when gas readings approach action levels.","Non-routine equipment repair — diagnose and repair complex hydraulic, mechanical, or electronic faults on bolting machines to minimize unplanned production stoppages.","Ventilation system optimization — assess airflow adequacy across multiple mine sections and reconfigure curtains and tubing to meet changing ventilation plans.","Production quality control — inspect bolt installation quality against torque specifications and ground control plans, identifying and correcting deviations across an entire heading.","Time and workflow management — plan shift sequences to balance drilling, bolting, dusting, and ventilation tasks, meeting production targets while sustaining safety standards.","Problem-solving under pressure — apply structured troubleshooting to simultaneous equipment, ground control, and atmospheric challenges in high-stress underground environments.","Safety culture reinforcement — model and enforce compliance with roof support plans, gas detection protocols, and PPE requirements across daily operations."]},"advanced":{"label":"Advanced","statements":["Ground control program leadership — direct the development and implementation of mine-wide roof support plans, integrating engineering guidance with real-world bolting crew experience.","Workforce training and mentorship — design and deliver on-the-job training programs for new roof bolters, calibrating instruction to Job Zone 2 skill development milestones.","Organizational safety standards — establish pre-shift inspection protocols and gas-monitoring procedures adopted across multiple mine sections or sites.","Equipment procurement and evaluation — evaluate bolting machine specifications, negotiate with vendors, and recommend capital purchases aligned with production and safety requirements.","Regulatory compliance oversight — interpret MSHA roof control and ventilation regulations, lead compliance audits, and represent the operation during agency inspections.","Incident investigation and prevention — lead root-cause analyses of roof fall or equipment incidents and implement corrective action plans that reduce repeat occurrences.","Cross-functional coordination — align bolting crew scheduling with mine engineering, ventilation, and haulage operations to optimize overall underground production flow.","Performance metrics and reporting — define key performance indicators for roof bolting productivity and safety, analyze shift data, and report trends to mine management.","Technology integration — evaluate and champion adoption of industrial control software and ERP platforms to improve maintenance scheduling and production tracking for bolting operations.","Strategic risk management — assess ground control risks across the mine plan horizon, advising senior leadership on sequencing decisions that protect personnel and assets."]}}},"sources":{"onet":"v30.2 (CC BY 4.0)","crosswalk":"https://skillscrosswalk.com","generator":"LER.me"},"attribution":"© EBSCOed"}