Columbus Junction Underground Mine safety activity
MSHA violations, accident reports and inspections.
Safety activity
Regular Safety and Health Inspection
5.0 on-site hours reported
Electrical conductors.
30 CFR 56.12004
Regular Safety and Health Inspection
3.8 on-site hours reported
Immediate notification.
30 CFR 50.10(d) · $151.00 proposed penalty
Regular Safety and Health Inspection
5.8 on-site hours reported
Inundation
Accident only
Accident narrative
7000-1 filed 7/23/25 for original event. mine has remained inaccessible since flood date. K order issued. Water levels in creek and pit have been highly variable over time. this rain event raised existing water levels. Berms placed to prevent pit access. No mine entry since July 21, 2025. 0 injuries occurred. report filed to abate Citation 5118900
Testing grounding systems.
30 CFR 57.12028 · $226.00 proposed penalty
Regular Safety and Health Inspection
6.5 on-site hours reported
Spot Inspection
2.8 on-site hours reported
Insulation and fittings for power wires and cables.
30 CFR 57.12008 · $226.00 proposed penalty
Regular Safety and Health Inspection
8.5 on-site hours reported
Spot Inspection
8.0 on-site hours reported
Violation — cited standard not reported
Inundation
Accident only
Accident narrative
Extreme flooding event caused unexpected water in the mine. Mine is inaccessible and investigation/remediation is ongoing. No personnel allowed in mine until fully cleared to do so. NO INJURIES
Alternative mine rescue capability for special mining conditions.
30 CFR 49.4(d)(3) · $151.00 proposed penalty
Regular Safety and Health Inspection
23.0 on-site hours reported
Insulation and fittings for power wires and cables.
30 CFR 57.12008 · $226.00 proposed penalty
Insulation and fittings for power wires and cables.
30 CFR 57.12008 · $151.00 proposed penalty
Safety defects; examination, correction and records.
30 CFR 57.14100(b) · $151.00 proposed penalty
Safety defects; examination, correction and records.
30 CFR 57.14100(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
33.5 on-site hours reported
Compliance Follow-up Inspection
2.0 on-site hours reported
Surface fan installations and mine openings.
30 CFR 57.4131(c) · $151.00 proposed penalty
Regular Safety and Health Inspection
13.3 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.