No 4 Mine safety activity
MSHA violations, accident reports and inspections.
Safety activity
Methane monitors.
30 CFR 75.342(a)(4) · $209.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $226.00 proposed penalty
Drill dust control at underground areas of underground mines.
30 CFR 72.630(b) · $366.00 proposed penalty
Spot Inspections
103(i) · 9.5 on-site hours reported
Ventilation controls.
30 CFR 75.333(c)(3) · $336.00 proposed penalty
Spot Inspections
103(i) · 9.5 on-site hours reported
Fall of roof or back
Accident only
Accident narrative
Multiple layers of laminated slate rock were seen to have fallen out above anchorage and above the required depth of the test holes. A small fault can be seen on the outby corner of the fall and is the reason the entry was dropped off the mining cycle as the area was being developed. The fall is roughly 20 ft. by 20 ft, and ranges from 10-14 ft. thick.
Non-Injury Accident Investigation
8.5 on-site hours reported
Violation — cited standard not reported
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $1,968.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $2,936.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $755.00 proposed penalty
Escapeways; bituminous and lignite mines.
30 CFR 75.380(d)(1) · $1,679.00 proposed penalty
Spot Inspections
103(i) · 6.0 on-site hours reported
Roof control plan.
30 CFR 75.220(a)(1) · $2,712.00 proposed penalty
Escapeways; bituminous and lignite mines.
30 CFR 75.380(d)(7)(i) · $288.00 proposed penalty
Escapeways; bituminous and lignite mines.
30 CFR 75.380(d)(7)(i) · $288.00 proposed penalty
Spot Inspections
103(i) · 8.0 on-site hours reported
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $465.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · $697.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · $3,448.00 proposed penalty
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $465.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · $697.00 proposed penalty
Mechanical equipment guards.
30 CFR 75.1722(b) · $336.00 proposed penalty
Mechanical equipment guards.
30 CFR 75.1722(a) · Significant and substantial (S&S) · $1,679.00 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.