U.S. Silica Company, LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Regular Safety and Health Inspection
Ottawa Plant · 110101343.5 on-site hours reported
Verbal Hazard Complaint Inspections
Colado Plant · 26006803.3 on-site hours reported
Regular Safety and Health Inspection
Celatom Mine · 35032377.5 on-site hours reported
Construction and maintenance of guards.
Ottawa Plant · 110101330 CFR 56.14112(b) · $313.00 proposed penalty
Construction and maintenance of guards.
Ottawa Plant · 110101330 CFR 56.14112(b) · $313.00 proposed penalty
Electrical conductors.
Ottawa Plant · 110101330 CFR 56.12004 · $313.00 proposed penalty
Safety defects; examination, correction and records.
Ottawa Plant · 110101330 CFR 56.14100(c) · $697.00 proposed penalty
Spot Inspection
Berkeley Plant · 460280512.0 on-site hours reported
Handling of materials
EP Engineered Clays Corporation · 2200415Days restricted activity only
Accident narrative
Employee fell forward hitting their face while moving vacuum hose up a concrete ramp.
Compliance Follow-up Inspection
COLUMBIA PLANT · 38001381.5 on-site hours reported
Slip or fall of person
Colado Plant · 2600680Days restricted activity only
Accident narrative
Employee tripped over a 3-inch pipe that was staged for an outage outside of the maintenance shop. The employee fell to the ground and landed on EE's left upper torso, resulting in fractured ribs.
Insulation and fittings for power wires and cables.
Montpelier Plant · 440282930 CFR 56.12008 · $151.00 proposed penalty
Loading, blasting, and security.
Mill Creek Plant #39 · 340083630 CFR 56.6306(f)(1) · Significant and substantial (S&S) · $1,037.00 proposed penalty
103 (g) Written Notification Hazard Complaint Inspectio
Mill Creek Plant #39 · 34008364.0 on-site hours reported
Regular Safety and Health Inspection
Montpelier Plant · 440282917.3 on-site hours reported
Exposure limits for airborne contaminants.
Berkeley Plant · 460280530 CFR 56.5001(a)/56.5005 · $151.00 proposed penalty
Permissible exposure level.
COLUMBIA PLANT · 380013830 CFR 62.130(a) · $151.00 proposed penalty
Construction and maintenance of guards.
COLUMBIA PLANT · 380013830 CFR 56.14112(a)(1) · $151.00 proposed penalty
Construction and maintenance of guards.
COLUMBIA PLANT · 380013830 CFR 56.14112(a)(1) · $226.00 proposed penalty
Regular Safety and Health Inspection
COLUMBIA PLANT · 380013829.0 on-site hours reported
Electrical conductors.
Colado Plant · 260068030 CFR 56.12004 · $151.00 proposed penalty
Spillage and leakage.
Colado Plant · 260068030 CFR 56.4102 · $151.00 proposed penalty
Electrical conductors.
COLUMBIA PLANT · 380013830 CFR 56.12004 · $151.00 proposed penalty
Safe access.
COLUMBIA PLANT · 380013830 CFR 56.11001 · $226.00 proposed penalty
Inspection.
COLUMBIA PLANT · 380013830 CFR 56.4201(a)(2) · $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.