Rolling Thunder Mine safety activity
MSHA violations, accident reports and inspections.
Safety activity
Mine ventilation plan; submission and approval.
30 CFR 75.370(a)(1) · $1,037.00 proposed penalty
Permanent splicing of trailing cables.
30 CFR 75.604(b) · Significant and substantial (S&S) · $818.00 proposed penalty
Approval of other fire suppression devices.
30 CFR 75.1107-13(g) · $151.00 proposed penalty
Methane monitors.
30 CFR 75.342(a)(4) · $151.00 proposed penalty
Electric equipment; examination, testing and maintenance.
30 CFR 75.512 · $226.00 proposed penalty
Preshift examination at fixed intervals.
30 CFR 75.360(f) · $151.00 proposed penalty
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $288.00 proposed penalty
Permanent splicing of trailing cables.
30 CFR 75.604(b) · $366.00 proposed penalty
Preshift examination at fixed intervals.
30 CFR 75.360(g) · $151.00 proposed penalty
Mine ventilation plan; submission and approval.
30 CFR 75.370(a)(1) · $366.00 proposed penalty
Mine ventilation plan; submission and approval.
30 CFR 75.370(a)(1) · $697.00 proposed penalty
Short circuit protection; ratings and settings of circuit breakers.
30 CFR 75.601-1 · $151.00 proposed penalty
Preshift examination at fixed intervals.
30 CFR 75.360(g) · $151.00 proposed penalty
Spot Inspection
3.5 on-site hours reported
Regular Safety and Health Inspection
315.8 on-site hours reported
Mine ventilation plan; submission and approval.
30 CFR 75.370(a)(1) · Significant and substantial (S&S) · $1,431.00 proposed penalty
Machinery and equipment; operation and maintenance.
30 CFR 75.1725(a) · $151.00 proposed penalty
Automatic fire sensor and warning device systems; installation; minimum requirements.
30 CFR 75.1103-4(a)(1)(iv) · $151.00 proposed penalty
Automatic emergency-parking brakes.
30 CFR 75.523-3(c)(2) · $151.00 proposed penalty
Attachment of ground conductors and ground check wires to equipment frames; use of separate connections.
30 CFR 75.902-4 · $151.00 proposed penalty
Air quality.
30 CFR 75.321(a)(1) · $1,679.00 proposed penalty
Approval of other fire suppression devices.
30 CFR 75.1107-13(g) · $151.00 proposed penalty
Methane monitors.
30 CFR 75.342(a)(4) · Significant and substantial (S&S) · $465.00 proposed penalty
Regular Safety and Health Inspection
232.5 on-site hours reported
Fatal Accident Investigation
146.0 on-site hours reported
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.