STILLWATER MINE safety activity
MSHA violations, accident reports and inspections.
Safety activity
Maintenance standards.
30 CFR 57.5066(a) · $209.00 proposed penalty
Spillage and leakage.
30 CFR 57.4102 · $549.00 proposed penalty
Access to stationary electrical equipment or switchgear.
30 CFR 57.12019 · $151.00 proposed penalty
Correction of hazardous conditions.
30 CFR 57.3200 · $549.00 proposed penalty
Maintenance standards.
30 CFR 57.5066(a) · $267.00 proposed penalty
Fan installations.
30 CFR 57.4504(b) · $443.00 proposed penalty
Regular Safety and Health Inspection
315.5 on-site hours reported
Electrical
Fatality
Accident narrative
The employee was performing routine preventative maintenance on a transformer when EE was fatally electrocuted.
Fatal Accident Investigation
31.3 on-site hours reported
Violation — cited standard not reported
Construction and maintenance of ventilation doors.
30 CFR 57.8531(e) · Significant and substantial (S&S) · $7,084.00 proposed penalty
Inspection.
30 CFR 57.4201(a)(1) · $432.00 proposed penalty
Refuge areas.
30 CFR 57.11052(d) · Significant and substantial (S&S) · $14,557.00 proposed penalty
Safe access.
30 CFR 57.11001 · Significant and substantial (S&S) · $2,503.00 proposed penalty
Testing grounding systems.
30 CFR 57.12028 · $366.00 proposed penalty
Identification of power switches.
30 CFR 57.12018 · $398.00 proposed penalty
Testing grounding systems.
30 CFR 57.12028 · $366.00 proposed penalty
Testing grounding systems.
30 CFR 57.12028 · $366.00 proposed penalty
Electrical conductors.
30 CFR 57.12004 · Significant and substantial (S&S) · $1,679.00 proposed penalty
Temporary, portable containers.
30 CFR 47.44(b) · $398.00 proposed penalty
Safe access.
30 CFR 57.11001 · Significant and substantial (S&S) · $2,503.00 proposed penalty
Disorders (repeated trauma)
Occupatnal illness not deg 1-6
Accident narrative
Employee failed annual hearing test on 5/9/25 and was retested on 5/28/25 where it was suspected of an STS in left ear, A 3rd party audiologist confirmed this to be a reportable shift of the left ear on 5/29/25 via e-mail to operator making this a reportable hearing loss
Impoundment Spot Inspection
3.0 on-site hours reported
Correction of hazardous conditions.
30 CFR 57.3200 · Significant and substantial (S&S) · $2,133.00 proposed penalty
Disorders (repeated trauma)
Occupatnal illness not deg 1-6
Accident narrative
During a review of audiogram results by a third party Audiologist on 5/14/2025it was determined that an employee sustained a reportable threshold shift in their left ear. The employee is being re-trained in accordance with section 62.180 of the CFR
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.