No 4 Mine safety activity
MSHA violations, accident reports and inspections.
Safety activity
Roof control plan.
30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $2,712.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $2,712.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · $549.00 proposed penalty
Protection from falls of roof, face and ribs.
30 CFR 75.202(a) · Significant and substantial (S&S) · $2,936.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · $549.00 proposed penalty
Spot Inspections
103(i) · 5.8 on-site hours reported
Verbal Hazard Complaint Inspections
5.0 on-site hours reported
Electric equipment; examination, testing, and maintenance.
30 CFR 77.502 · $288.00 proposed penalty
Maintenance of diesel-powered equipment.
30 CFR 75.1914(a) · $288.00 proposed penalty
Machinery and equipment; operation and maintenance.
30 CFR 75.1725(a) · $465.00 proposed penalty
Protection from falls of roof, face and ribs.
30 CFR 75.202(a) · Significant and substantial (S&S) · $2,936.00 proposed penalty
Mechanical equipment guards.
30 CFR 77.400(d) · Significant and substantial (S&S) · $2,312.00 proposed penalty
Mechanical equipment guards.
30 CFR 77.400(d) · Significant and substantial (S&S) · $2,133.00 proposed penalty
Impoundment Spot Inspection
11.0 on-site hours reported
Supplemental support materials, equipment and tools.
30 CFR 75.214(b) · $288.00 proposed penalty
Machinery and equipment; operation and maintenance.
30 CFR 75.1725(a) · $465.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $2,936.00 proposed penalty
Preshift examination at fixed intervals.
30 CFR 75.360(f) · Significant and substantial (S&S) · $1,431.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · $592.00 proposed penalty
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $366.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $2,712.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $642.00 proposed penalty
Machinery and equipment; operation and maintenance.
30 CFR 75.1725(a) · Significant and substantial (S&S) · $1,679.00 proposed penalty
Drill dust control at underground areas of underground mines.
30 CFR 72.630(b) · Significant and substantial (S&S) · $1,431.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · $549.00 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.