Sisecam Wyoming, LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Spot Inspections
Big Island Mine & Refinery · 4800154103(i) · 4.5 on-site hours reported
Impoundment Spot Inspection
Big Island Mine & Refinery · 48001548.5 on-site hours reported
Safety defects; examination, correction and records.
Big Island Mine & Refinery · 480015430 CFR 57.14100(c) · $151.00 proposed penalty
Inundation
Big Island Mine & Refinery · 4800154Accident only
Accident narrative
On Friday, May 16th, 2025 about 9:30am, it was observed that some of our ventilation structures on the lower west section had been compromised. As an abundance of caution, we evacuated the mine. Ventilation was restored and normal operations began Tuesday evening.
Non-Fatal Accident Investigation
Big Island Mine & Refinery · 480015451.0 on-site hours reported
Violation — cited standard not reported
Big Island Mine & Refinery · 4800154Housekeeping.
Big Island Mine & Refinery · 480015430 CFR 57.20003(a) · $151.00 proposed penalty
Requirement for container labels.
Big Island Mine & Refinery · 480015430 CFR 47.41(a) · $151.00 proposed penalty
Spot Inspections
Big Island Mine & Refinery · 4800154103(i) · 5.0 on-site hours reported
Safe access.
Big Island Mine & Refinery · 480015430 CFR 57.11001 · Significant and substantial (S&S) · $432.00 proposed penalty
Electrical conductors.
Big Island Mine & Refinery · 480015430 CFR 57.12004 · $151.00 proposed penalty
Inspection and cover plates.
Big Island Mine & Refinery · 480015430 CFR 57.12032 · Significant and substantial (S&S) · $1,431.00 proposed penalty
Requirement for container labels.
Big Island Mine & Refinery · 480015430 CFR 47.41(a) · $151.00 proposed penalty
Two-way communication equipment for underground operations.
Big Island Mine & Refinery · 480015430 CFR 57.20032 · $288.00 proposed penalty
Spot Inspections
Big Island Mine & Refinery · 4800154103(i) · 0.5 on-site hours reported
Electrical conductors.
Big Island Mine & Refinery · 480015430 CFR 57.12004 · $151.00 proposed penalty
Spot Inspections
Big Island Mine & Refinery · 4800154103(i) · 3.0 on-site hours reported
Handling of materials
Big Island Mine & Refinery · 4800154Days away from work only
Accident narrative
Employee was trouble shooting a plugged line. When the washout came free it sprayed hot liquid onto the employee resulting in 1st and 2nd degree burns on their forearm, neck and upper chest.
Spot Inspections
Big Island Mine & Refinery · 4800154103(i) · 4.5 on-site hours reported
Electrical conductors.
Big Island Mine & Refinery · 480015430 CFR 57.12004 · $151.00 proposed penalty
Spot Inspections
Big Island Mine & Refinery · 4800154103(i) · 4.0 on-site hours reported
Electrical conductors.
Big Island Mine & Refinery · 480015430 CFR 56.12004 · $151.00 proposed penalty
Requirement for container labels.
Big Island Mine & Refinery · 480015430 CFR 47.41(a) · $151.00 proposed penalty
Requirement for container labels.
Big Island Mine & Refinery · 480015430 CFR 47.41(a) · $151.00 proposed penalty
Housekeeping.
Big Island Mine & Refinery · 480015430 CFR 57.20003(a) · $151.00 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.
Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.
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.