Mammoth Coal safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · Significant and substantial (S&S) · $3,184.00 proposed penalty
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · $398.00 proposed penalty
Criteria—Haulage; general.
ROAD FORK #52 MINE · 460952230 CFR 75.1403-10(i) · Significant and substantial (S&S) · $2,503.00 proposed penalty
Preshift examination at fixed intervals.
ROAD FORK #52 MINE · 460952230 CFR 75.360(f) · $1,126.00 proposed penalty
On-shift examination.
ROAD FORK #52 MINE · 460952230 CFR 75.362(g)(2)(i) · $151.00 proposed penalty
Mechanical equipment guards.
ROAD FORK #52 MINE · 460952230 CFR 75.1722(a) · $504.00 proposed penalty
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · Significant and substantial (S&S) · $13,436.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $697.00 proposed penalty
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · $432.00 proposed penalty
Hazardous conditions and violations of mandatory health or safety standards; posting, correcting, and recording.
ROAD FORK #52 MINE · 460952230 CFR 75.363(a) · $1,679.00 proposed penalty
Criteria—Haulage; general.
ROAD FORK #52 MINE · 460952230 CFR 75.1403-10(i) · $1,679.00 proposed penalty
Protection from falls of roof, face and ribs.
ROAD FORK #52 MINE · 460952230 CFR 75.202(a) · $288.00 proposed penalty
Ventilation controls.
ROAD FORK #52 MINE · 460952230 CFR 75.333(c)(3) · $151.00 proposed penalty
Spot Inspections
ROAD FORK #52 MINE · 4609522103(i) · 14.0 on-site hours reported
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $2,312.00 proposed penalty
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · $336.00 proposed penalty
Protection from falls of roof, face and ribs.
ROAD FORK #52 MINE · 460952230 CFR 75.202(a) · Significant and substantial (S&S) · $2,133.00 proposed penalty
Maintenance of incombustible content of rock dust.
ROAD FORK #52 MINE · 460952230 CFR 75.403 · $177.00 proposed penalty
Maintenance of incombustible content of rock dust.
ROAD FORK #52 MINE · 460952230 CFR 75.403 · $177.00 proposed penalty
Maintenance of incombustible content of rock dust.
ROAD FORK #52 MINE · 460952230 CFR 75.403 · $177.00 proposed penalty
Electric equipment; examination, testing and maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.512 · $1,126.00 proposed penalty
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · Significant and substantial (S&S) · $4,383.00 proposed penalty
Power wires and cables; insulation and protection.
ROAD FORK #52 MINE · 460952230 CFR 75.517 · Significant and substantial (S&S) · $5,144.00 proposed penalty
Electric equipment; examination, testing and maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.512 · Significant and substantial (S&S) · $32,395.00 proposed penalty
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · $1,320.00 proposed penalty
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.