No 4 Mine safety activity
MSHA violations, accident reports and inspections.
Safety activity
Spot Inspection
5.5 on-site hours reported
Inspection of fire suppression devices.
30 CFR 75.1107-16(b) · $245.00 proposed penalty
Permissible electric face equipment; maintenance.
30 CFR 75.503 · Significant and substantial (S&S) · $1,550.00 proposed penalty
Power wires; support.
30 CFR 75.516 · $432.00 proposed penalty
Protection from falls of roof, face and ribs.
30 CFR 75.202(a) · Significant and substantial (S&S) · $2,503.00 proposed penalty
Electric equipment; examination, testing and maintenance.
30 CFR 75.512 · $267.00 proposed penalty
Drill dust control at underground areas of underground mines.
30 CFR 72.630(b) · $177.00 proposed penalty
Protection of trailing cables.
30 CFR 75.606 · $151.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $2,312.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $465.00 proposed penalty
Spot Inspections
103(i) · 7.3 on-site hours reported
Accumulation of combustible materials.
30 CFR 75.400 · $504.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $2,312.00 proposed penalty
Permanent splicing of trailing cables.
30 CFR 75.604(b) · $245.00 proposed penalty
Methane monitors.
30 CFR 75.342(a)(4) · Significant and substantial (S&S) · $1,219.00 proposed penalty
Ventilation controls.
30 CFR 75.333(c)(3) · $245.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $465.00 proposed penalty
Other safeguards.
30 CFR 75.1403 · $267.00 proposed penalty
Dry chemical devices; capacity; minimum requirements.
30 CFR 75.1107-9(a)(1) · $245.00 proposed penalty
Other safeguards.
30 CFR 75.1403 · $267.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $465.00 proposed penalty
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $336.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $504.00 proposed penalty
Protection from falls of roof, face and ribs.
30 CFR 75.202(a) · $504.00 proposed penalty
Emergency Response Plan; refuge alternatives.
30 CFR 75.1507(a)(11)(ii) · $245.00 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.
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.