Mammoth Coal safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Permissible electric face equipment; maintenance.
ROAD FORK #52 MINE · 460952230 CFR 75.503 · $642.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $755.00 proposed penalty
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · $697.00 proposed penalty
Roof bolting.
ROAD FORK #52 MINE · 460952230 CFR 75.204(c)(1) · $336.00 proposed penalty
Ventilation controls.
ROAD FORK #52 MINE · 460952230 CFR 75.333(d)(3) · $336.00 proposed penalty
Mining machines, cap lamps; requirements.
ROAD FORK #52 MINE · 460952230 CFR 75.1719-4(b) · $504.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $755.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $755.00 proposed penalty
Maintenance of belt conveyors and belt conveyor entries.
ROAD FORK #52 MINE · 460952230 CFR 75.1731(a) · $336.00 proposed penalty
Approval of other fire suppression devices.
ROAD FORK #52 MINE · 460952230 CFR 75.1107-13(g) · $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) · $1,431.00 proposed penalty
Installation of electric equipment and conductors; permissibility.
ROAD FORK #52 MINE · 460952230 CFR 75.1002(a) · $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
Criteria—Haulage; general.
ROAD FORK #52 MINE · 460952230 CFR 75.1403-10(e)
Roof control plan.
ROAD FORK #52 MINE · 460952230 CFR 75.220(a)(1) · $313.00 proposed penalty
Violation — cited standard not reported
ROAD FORK #52 MINE · 4609522$1,467.00 proposed penalty
Accumulation of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 75.400 · $755.00 proposed penalty
Protection from falls of roof, face and ribs.
ROAD FORK #52 MINE · 460952230 CFR 75.202(a) · Significant and substantial (S&S) · $4,749.00 proposed penalty
Storage of materials.
ROAD FORK #52 MINE · 460952230 CFR 77.208(e) · $336.00 proposed penalty
Loading and haulage equipment; inspection and maintenance.
ROAD FORK #52 MINE · 460952230 CFR 77.1606(c) · $336.00 proposed penalty
Accumulations of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 77.1104 · $336.00 proposed penalty
Loading and haulage equipment; inspection and maintenance.
ROAD FORK #52 MINE · 460952230 CFR 77.1606(c) · $336.00 proposed penalty
Accumulations of combustible materials.
ROAD FORK #52 MINE · 460952230 CFR 77.1104 · $336.00 proposed penalty
Travelways at surface installations.
Mammoth Coal Processing Pl & Riv Tipple · 460331730 CFR 77.205(b) · $151.00 proposed penalty
Travelways at surface installations.
Mammoth Coal Processing Pl & Riv Tipple · 460331730 CFR 77.205(b) · $151.00 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.