Mammoth Coal safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Protection from falls of roof, face and ribs.
ROAD FORK #52 MINE · 460952230 CFR 75.202(a) · Significant and substantial (S&S) · $2,503.00 proposed penalty
Rock dusting.
ROAD FORK #52 MINE · 460952230 CFR 75.402 · $432.00 proposed penalty
Mine ventilation plan; submission and approval.
ROAD FORK #52 MINE · 460952230 CFR 75.370(a)(1) · $5,144.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $818.00 proposed penalty
Installation of high-voltage transmission cables.
ROAD FORK #52 MINE · 460952230 CFR 75.807 · $1,320.00 proposed penalty
Spot Inspections
ROAD FORK #52 MINE · 4609522103(i) · 3.0 on-site hours reported
Verbal Hazard Complaint Inspections
ROAD FORK #52 MINE · 460952239.8 on-site hours reported
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · $592.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $398.00 proposed penalty
Permanent splicing of trailing cables.
ROAD FORK #52 MINE · 460952230 CFR 75.604(b) · Significant and substantial (S&S) · $4,047.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $818.00 proposed penalty
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · $1,320.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $432.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $432.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $432.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $432.00 proposed penalty
Permissible electric face equipment; maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.503 · $313.00 proposed penalty
Permissible electric face equipment; maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.503 · $313.00 proposed penalty
Methane monitors.
ROAD FORK #52 MINE · 460952230 CFR 75.342(a)(4) · $432.00 proposed penalty
Electric equipment; examination, testing and maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.512 · $336.00 proposed penalty
Machinery
ROAD FORK #52 MINE · 4609522Days away from work only
Accident narrative
Employee was using the side of EE's drill pot to push EE's roof bolt high enough for clearance to install into the drill chuck. EE dropped the pot down to far and pinned EE's left foot between the drill pot and the mine floor.
Ventilation controls.
ROAD FORK #52 MINE · 460952230 CFR 75.333(d)(2) · $398.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $818.00 proposed penalty
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · $883.00 proposed penalty
Respirable dust standards.
ROAD FORK #52 MINE · 460952230 CFR 70.100(a)(2) · Significant and substantial (S&S) · $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.