U.S. Silica Company, LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Restricted clearance.
Mill Creek Plant #39 · 340083630 CFR 56.11008
Construction and maintenance of guards.
Mill Creek Plant #39 · 340083630 CFR 56.14112(b)
Construction and maintenance of ladders.
Mill Creek Plant #39 · 340083630 CFR 56.11003 · $151.00 proposed penalty
Housekeeping.
Mill Creek Plant #39 · 340083630 CFR 56.20003(c) · Significant and substantial (S&S)
Regular Safety and Health Inspection
Middleton Operations · 400296818.0 on-site hours reported
Verbal Hazard Complaint Inspections
Ottawa Plant · 11010135.0 on-site hours reported
Regular Safety and Health Inspection
Mill Creek Plant #39 · 340083621.5 on-site hours reported
103 (g) Written Notification Hazard Complaint Inspectio
Berkeley Plant · 46028058.3 on-site hours reported
103 (g) Written Notification Hazard Complaint Inspectio
Berkeley Plant · 46028057.0 on-site hours reported
103 (g) Written Notification Hazard Complaint Inspectio
Berkeley Plant · 46028057.5 on-site hours reported
Safety defects; examination, correction and records.
Berkeley Plant · 460280530 CFR 56.14100(b) · $151.00 proposed penalty
Housekeeping.
Berkeley Plant · 460280530 CFR 56.20003(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Clark Operations · 26006775.5 on-site hours reported
Regular Safety and Health Inspection
Fernley Operations · 26019502.5 on-site hours reported
Controls and switches.
Berkeley Plant · 460280530 CFR 56.12002 · $151.00 proposed penalty
Moving machine parts.
Berkeley Plant · 460280530 CFR 56.14107 · $151.00 proposed penalty
Regular Safety and Health Inspection
Berkeley Plant · 460280535.8 on-site hours reported
Safety can use.
Mill Creek Plant #37 · 340037730 CFR 56.4402 · $151.00 proposed penalty
Regular Safety and Health Inspection
Mill Creek Plant #37 · 34003778.8 on-site hours reported
Regular Safety and Health Inspection
Jackson Plant · 40029379.8 on-site hours reported
Electrical conductors.
Rockwood Plant · 200060830 CFR 56.12004 · $151.00 proposed penalty
Regular Safety and Health Inspection
Rockwood Plant · 200060817.5 on-site hours reported
Safe access.
EP Engineered Clays Corporation · 220041530 CFR 56.11001 · $151.00 proposed penalty
Construction and maintenance of guards.
EP Engineered Clays Corporation · 220041530 CFR 56.14112(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
EP Engineered Clays Corporation · 220041515.3 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.
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.