Rolling Thunder Mine safety activity
MSHA violations, accident reports and inspections.
Safety activity
Regular Safety and Health Inspection
21.0 on-site hours reported
Accumulations of combustible materials.
30 CFR 77.1104
Mobile equipment; automatic warning devices.
30 CFR 77.410(a)(1)
Examination and maintenance of firefighting equipment.
30 CFR 77.1110
Other safeguards.
30 CFR 75.1403
First-Aid training; supervisory employees.
30 CFR 75.1713-3
103 (g) Written Notification Hazard Complaint Inspectio
5.0 on-site hours reported
Mine ventilation plan; submission and approval.
30 CFR 75.370(a)(1) · $177.00 proposed penalty
Electric equipment; examination, testing and maintenance.
30 CFR 75.512 · $267.00 proposed penalty
Mine ventilation plan; submission and approval.
30 CFR 75.370(a)(1) · $177.00 proposed penalty
Permanent splicing of trailing cables.
30 CFR 75.604(b) · Significant and substantial (S&S) · $959.00 proposed penalty
Accumulation of combustible materials.
30 CFR 75.400 · $151.00 proposed penalty
Permissible electric face equipment; maintenance.
30 CFR 75.503 · $313.00 proposed penalty
Verbal Hazard Complaint Inspections
9.0 on-site hours reported
Other safeguards.
30 CFR 75.1403
Roof control plan.
30 CFR 75.220(a)(1) · $193.00 proposed penalty
Low- and medium-voltage circuits serving three-phase alternating current equipment; circuit breakers.
30 CFR 75.900 · $151.00 proposed penalty
Mine ventilation plan; submission and approval.
30 CFR 75.370(a)(1) · Significant and substantial (S&S) · $818.00 proposed penalty
Permanent splicing of trailing cables.
30 CFR 75.604(b) · Significant and substantial (S&S) · $2,133.00 proposed penalty
Electric equipment; examination, testing and maintenance.
30 CFR 75.512 · $267.00 proposed penalty
Methane monitors.
30 CFR 75.342(a)(4) · $151.00 proposed penalty
Mining machines, cap lamps; requirements.
30 CFR 75.1719-4(b) · $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) · Significant and substantial (S&S) · $2,133.00 proposed penalty
Drill dust control at underground areas of underground mines.
30 CFR 72.630(b) · $209.00 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.