Mammoth Coal safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Mechanical equipment guards.
ROAD FORK #52 MINE · 460952230 CFR 75.1722(a) · $504.00 proposed penalty
Drill dust control at underground areas of underground mines.
ROAD FORK #52 MINE · 460952230 CFR 72.630(b) · $818.00 proposed penalty
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · $592.00 proposed penalty
Rock dusting.
ROAD FORK #52 MINE · 460952230 CFR 75.402 · $592.00 proposed penalty
Dust disease of lungs
ROAD FORK #52 MINE · 4609522Occupatnal illness not deg 1-6
Accident narrative
Employee has been diagnosed with Occupational Pneumoconiosis.
Electric equipment; examination, testing and maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.512 · $883.00 proposed penalty
Automatic fire warning devices; actions and response.
ROAD FORK #52 MINE · 460952230 CFR 75.1103-5(d) · $1,126.00 proposed penalty
Spot Inspections
ROAD FORK #52 MINE · 4609522103(i) · 5.5 on-site hours reported
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · $465.00 proposed penalty
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · $883.00 proposed penalty
Machinery
ROAD FORK #52 MINE · 4609522No dys awy frm wrk,no rstr act
Accident narrative
Employee stated while running the miner, loading out cut rock, a piece of rock ricocheted back striking them on right hand. Employee was seen at Medical Center and received six sutures and a follow up with a physician for fracture to end of finger.
Spot Inspections
ROAD FORK #52 MINE · 4609522103(i) · 3.5 on-site hours reported
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $1,320.00 proposed penalty
Protection from falls of roof, face and ribs.
ROAD FORK #52 MINE · 460952230 CFR 75.202(a) · Significant and substantial (S&S) · $12,403.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $818.00 proposed penalty
Spot Inspections
ROAD FORK #52 MINE · 4609522103(i) · 5.0 on-site hours reported
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $883.00 proposed penalty
Ventilation controls.
ROAD FORK #52 MINE · 460952230 CFR 75.333(d)(3) · $177.00 proposed penalty
Verbal Hazard Complaint Inspections
ROAD FORK #52 MINE · 46095226.0 on-site hours reported
Electrical Technical Investigation
ROAD FORK #52 MINE · 460952210.5 on-site hours reported
On-shift examination.
ROAD FORK #52 MINE · 460952230 CFR 75.362(a)(2) · $1,320.00 proposed penalty
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · $3,448.00 proposed penalty
Other safeguards.
ROAD FORK #52 MINE · 460952230 CFR 75.1403 · Significant and substantial (S&S) · $959.00 proposed penalty
Handling of materials
ROAD FORK #52 MINE · 4609522Days away from work only
Accident narrative
Employee stated they twisted their back and felt a sharp pain in lower back while loading glue bolts onto the left roof bolter.
Power wires and cables; insulation and protection.
ROAD FORK #52 MINE · 460952230 CFR 75.517 · $959.00 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.