Mammoth Coal safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Grounding metallic frames, casings, and other enclosures of electric equipment.
ROAD FORK #52 MINE · 460952230 CFR 75.701
Other safeguards.
ROAD FORK #52 MINE · 460952230 CFR 75.1403
Other safeguards.
ROAD FORK #52 MINE · 460952230 CFR 75.1403
Electric equipment; examination, testing and maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.512
Preshift examination at fixed intervals.
ROAD FORK #52 MINE · 460952230 CFR 75.360(f)
Grounding metallic frames, casings, and other enclosures of electric equipment.
ROAD FORK #52 MINE · 460952230 CFR 75.701
Other safeguards.
ROAD FORK #52 MINE · 460952230 CFR 75.1403
Spot Inspection
ROAD FORK #52 MINE · 460952214.5 on-site hours reported
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1)
Spot Inspections
ROAD FORK #52 MINE · 4609522103(i) · 6.0 on-site hours reported
Storage of liquefied and nonliquefied compressed gas cylinders; requirements.
ROAD FORK #52 MINE · 460952230 CFR 75.1106-3(c)
Permissible electric face equipment; maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.503
Power wires and cables; insulation and protection.
ROAD FORK #52 MINE · 460952230 CFR 75.517 · Significant and substantial (S&S)
Spot Inspections
ROAD FORK #52 MINE · 4609522103(i) · 6.5 on-site hours reported
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1)
Automatic fire sensor and warning device systems; examination and test requirements.
ROAD FORK #52 MINE · 460952230 CFR 75.1103-8(c)
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400
Dust disease of lungs
ROAD FORK #52 MINE · 4609522Occupatnal illness not deg 1-6
Accident narrative
EE has been diagnosed with Occupational Pneumoconiosis.
Verbal Hazard Complaint Inspections
ROAD FORK #52 MINE · 46095228.5 on-site hours reported
Drill dust control at underground areas of underground mines.
ROAD FORK #52 MINE · 460952230 CFR 72.630(b)
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400
Automatic fire sensor and warning device systems; examination and test requirements.
ROAD FORK #52 MINE · 460952230 CFR 75.1103-8(c)
Fire-resistant hydraulic fluids and fire suppression devices on underground equipment.
ROAD FORK #52 MINE · 460952230 CFR 75.1107-1(a)(3)(ii)
Grounding metallic frames, casings, and other enclosures of electric equipment.
ROAD FORK #52 MINE · 460952230 CFR 75.701
Sources and definitions
MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).
Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.
Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.