Mammoth Coal safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $366.00 proposed penalty
Powered haulage
ROAD FORK #52 MINE · 4609522No dys awy frm wrk,no rstr act
Accident narrative
Employee stated they were applying brakes, when the front end jerked causing them to run under the moving slope belt.
Mining machines, cap lamps; requirements.
ROAD FORK #52 MINE · 460952230 CFR 75.1719-4(b) · $592.00 proposed penalty
Permissible electric face equipment; maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.503 · $642.00 proposed penalty
Approval of other fire suppression devices.
ROAD FORK #52 MINE · 460952230 CFR 75.1107-13(g) · $177.00 proposed penalty
Inspection of fire suppression devices.
ROAD FORK #52 MINE · 460952230 CFR 75.1107-16(b) · $398.00 proposed penalty
Permissible electric face equipment; maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.503 · $288.00 proposed penalty
Protection from falls of roof, face and ribs.
ROAD FORK #52 MINE · 460952230 CFR 75.202(a) · $7,084.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $432.00 proposed penalty
Permanent splicing of trailing cables.
ROAD FORK #52 MINE · 460952230 CFR 75.604(b) · Significant and substantial (S&S) · $4,383.00 proposed penalty
Permissible electric face equipment; maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.503 · $288.00 proposed penalty
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · $1,126.00 proposed penalty
Illumination.
ROAD FORK #52 MINE · 460952230 CFR 77.207 · $398.00 proposed penalty
Spot Inspections
ROAD FORK #52 MINE · 4609522103(i) · 4.5 on-site hours reported
Installation of water sprinkler systems; requirements.
ROAD FORK #52 MINE · 460952230 CFR 75.1101-7(a) · $177.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $592.00 proposed penalty
Electric equipment; examination, testing and maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.512 · $1,126.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $366.00 proposed penalty
Power wires and cables; insulation and protection.
ROAD FORK #52 MINE · 460952230 CFR 75.517 · $1,037.00 proposed penalty
Permanent splicing of trailing cables.
ROAD FORK #52 MINE · 460952230 CFR 75.604(b) · Significant and substantial (S&S) · $4,383.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $432.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $366.00 proposed penalty
Preshift examination at fixed intervals.
ROAD FORK #52 MINE · 460952230 CFR 75.360(a)(1) · $398.00 proposed penalty
Dust disease of lungs
ROAD FORK #52 MINE · 4609522Occupatnal illness not deg 1-6
Accident narrative
Employee was diagnosed with pneumoconiosis.
Electrical
ROAD FORK #52 MINE · 4609522No dys awy frm wrk,no rstr act
Accident narrative
Electricians were trouble shooting panel on miner, before they knocked the breaker injured bent over to look inside to see where the smoke was coming from when an arc flash occurred. Employee was burnt on left side of face and right hand, removal of burnt skin was needed.
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.