Carmeuse Holding SA safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Correction of dangerous conditions.
Buffington Plant · 120042630 CFR 56.12030 · $226.00 proposed penalty
Safety defects; examination, correction and records.
Buffington Plant · 120042630 CFR 56.14100(c) · $504.00 proposed penalty
Testing grounding systems.
Buffington Plant · 120042630 CFR 56.12028 · $1,679.00 proposed penalty
Safety defects; examination, correction and records.
Underground Black River Operation · 150006230 CFR 57.14100(d) · $151.00 proposed penalty
Housekeeping.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.20003(b) · $151.00 proposed penalty
Protection of persons at switchgear.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.12020 · Significant and substantial (S&S) · $1,320.00 proposed penalty
Horns and backup alarms.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.14132(a) · $151.00 proposed penalty
Parking procedures for unattended equipment.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.14207 · $151.00 proposed penalty
Parking procedures for unattended equipment.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.14207 · $151.00 proposed penalty
Safety defects; examination, correction and records.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.14100(a) · $151.00 proposed penalty
Temporary, portable containers.
O-N Minerals, Cedarville Operation · 200006130 CFR 47.44(b) · $151.00 proposed penalty
Moving machine parts.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.14107(a) · Significant and substantial (S&S) · $336.00 proposed penalty
Regular Safety and Health Inspection
O-N Minerals, Cedarville Operation · 200006149.0 on-site hours reported
Insulation and fittings for power wires and cables.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.12008 · $151.00 proposed penalty
Electrical conductors.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.12004 · $151.00 proposed penalty
Electrical conductors.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.12004 · $151.00 proposed penalty
Moving machine parts.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.14107(a) · Significant and substantial (S&S) · $336.00 proposed penalty
Safe access.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.11001 · Significant and substantial (S&S) · $755.00 proposed penalty
Safety defects; examination, correction and records.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.14100(b) · $1,126.00 proposed penalty
Non-Fatal Accident Investigation
Underground Black River Operation · 150006236.0 on-site hours reported
Violation — cited standard not reported
Underground Black River Operation · 1500062Operating speeds and control of equipment.
Underground Black River Operation · 150006230 CFR 57.9101 · Significant and substantial (S&S) · $1,126.00 proposed penalty
Training of miners assigned to a task in which they have had no previous experience; minimum courses of instruction.
Underground Black River Operation · 150006230 CFR 48.7(a) · $151.00 proposed penalty
Powered haulage
Underground Black River Operation · 1500062No dys awy frm wrk,no rstr act
Accident narrative
An underground employee was injured on 5/30/2025, during the unsafe operation of a Kawasaki ATV Mule. The employee was traveling in reverse and rolled the ATV with another employee on board. This incident was not reported to management until 3 days after the incident. The employee states they received medical treatment on the day of injury.
Powered haulage
Underground Black River Operation · 1500062No dys awy frm wrk,no rstr act
Accident narrative
An underground employee was injured during the unsafe operation of a Kawaski ATV Mule. The employee was traveling as a passenger on the ATV which was being driven in reverse by another employee. This incident was not reported to management until 3 days after the incident. The employee received medical treatment the day of notification, and after receiving suspension.
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.