MINE NO. 1 safety activity
MSHA violations, accident reports and inspections.
Safety activity
Drill dust control at underground areas of underground mines.
30 CFR 72.630(b) · $193.00 proposed penalty
Spot Inspections
103(i) · 4.0 on-site hours reported
Spot Inspections
103(i) · 3.0 on-site hours reported
Spot Inspections
103(i) · 5.0 on-site hours reported
Maintenance of incombustible content of rock dust.
30 CFR 75.403 · $151.00 proposed penalty
Spot Inspections
103(i) · 6.5 on-site hours reported
Methane monitors.
30 CFR 75.342(a)(4) · $151.00 proposed penalty
Roof control plan.
30 CFR 75.220(a)(1) · Significant and substantial (S&S) · $12,403.00 proposed penalty
Spot Inspections
103(i) · 2.0 on-site hours reported
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $267.00 proposed penalty
Spot Inspections
103(i) · 2.5 on-site hours reported
Automatic emergency-parking brakes.
30 CFR 75.523-3(b)(1) · Significant and substantial (S&S) · $959.00 proposed penalty
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $267.00 proposed penalty
Fall of roof or back
Accident only
Accident narrative
Adverse roof conditions due to abutment pressures at District #4, #3 entry at crosscut #94. This condition was evaluated by management and a decision was made to declare and implement Hamilton's blocked tailgate plan for safety.
Escapeways; bituminous and lignite mines.
30 CFR 75.380(d)(7)(iv) · $755.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $313.00 proposed penalty
Nonpermissible diesel-powered equipment; electrical system design and performance requirements.
30 CFR 75.1910(j) · $209.00 proposed penalty
Spot Inspections
103(i) · 5.0 on-site hours reported
Water, sediment or slurry impoundments and impounding structures; reporting requirements; certification.
30 CFR 77.216-4(a) · $151.00 proposed penalty
Shaft, Slope or Major Construction Spot Inspection
1.0 on-site hours reported
Fall of roof or back
Accident only
Accident narrative
A roof fall occurred on the District #4 Tailgate in #3 entry, 30 feet inby crosscut #95 due to adverse roof conditions and abutment pressures blocking off access of the longwall tailgate.
Spot Inspections
103(i) · 7.5 on-site hours reported
Spot Inspections
103(i) · 4.8 on-site hours reported
Maintenance of incombustible content of rock dust.
30 CFR 75.403 · $959.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $288.00 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.