U.S. Silica Company, LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
103 (g) Written Notification Hazard Complaint Inspectio
Ottawa Plant · 11010134.0 on-site hours reported
Safe access.
Ottawa Plant · 110101330 CFR 56.11001 · $504.00 proposed penalty
Verbal Hazard Complaint Inspections
Clark Operations · 26006774.5 on-site hours reported
Housekeeping.
Clark Operations · 260067730 CFR 56.20003(b) · $151.00 proposed penalty
Verbal Hazard Complaint Inspections
COLUMBIA PLANT · 38001382.5 on-site hours reported
Protection of persons at switchgear.
Berkeley Plant · 460280530 CFR 56.12020 · $151.00 proposed penalty
Handrails and toeboards.
Berkeley Plant · 460280530 CFR 56.11002 · $151.00 proposed penalty
Moving machine parts.
Berkeley Plant · 460280530 CFR 56.14107(a) · $151.00 proposed penalty
Snow and ice on walkways and travelways.
Ottawa Plant · 110101330 CFR 56.11016 · Significant and substantial (S&S) · $2,312.00 proposed penalty
Dump site restraints.
Ottawa Plant · 110101330 CFR 56.9301 · Significant and substantial (S&S) · $8,315.00 proposed penalty
Inspection.
Ottawa Plant · 110101330 CFR 56.4201(a)(2) · $504.00 proposed penalty
Regular Safety and Health Inspection
Berkeley Plant · 460280547.3 on-site hours reported
Parking procedures for unattended equipment.
Ottawa Plant · 110101330 CFR 56.14207 · $504.00 proposed penalty
Identification of power switches.
Ottawa Plant · 110101330 CFR 56.12018 · $1,679.00 proposed penalty
Dump site restraints.
Berkeley Plant · 460280530 CFR 56.9301 · $151.00 proposed penalty
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Ottawa Plant · 110101330 CFR 50.30(a) · $151.00 proposed penalty
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Ottawa Plant · 110101330 CFR 50.30(a) · $151.00 proposed penalty
Grounding transformer and switchgear enclosures.
Ottawa Plant · 110101330 CFR 56.12026 · $1,679.00 proposed penalty
Verbal Hazard Complaint Inspections
COLUMBIA PLANT · 38001382.8 on-site hours reported
Impoundment Spot Inspection
Berkeley Plant · 46028055.0 on-site hours reported
Examination of working places.
Ottawa Plant · 110101330 CFR 56.18002(b) · $151.00 proposed penalty
Safety defects; examination, correction and records.
Ottawa Plant · 110101330 CFR 56.14100(c) · Significant and substantial (S&S) · $267.00 proposed penalty
Securing gas cylinders.
Ottawa Plant · 110101330 CFR 56.16005 · $151.00 proposed penalty
Air receiver tanks.
Ottawa Plant · 110101330 CFR 56.13011 · $504.00 proposed penalty
Parking procedures for unattended equipment.
Ottawa Plant · 110101330 CFR 56.14207 · $504.00 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.