U.S. Silica Company, LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Spot Inspection
Pacific Plant · 23005442.0 on-site hours reported
Impoundment Spot Inspection
Berkeley Plant · 46028052.8 on-site hours reported
Air receiver tanks.
Pacific Plant · 230054430 CFR 56.13011 · $151.00 proposed penalty
Machinery
Colado Plant · 2600680Days restricted activity only
Accident narrative
An employee was cutting bolts with a grinder when the tool unexpectedly kicked back, causing the grinding wheel to contact the employee's left wrist. The employee sustained a laceration requiring seven stitches.
Regular Safety and Health Inspection
Pacific Plant · 230054416.5 on-site hours reported
Regular Safety and Health Inspection
Celatom Plant · 350323612.0 on-site hours reported
Safe access.
Pacific Plant · 230054430 CFR 56.11001 · $193.00 proposed penalty
Illumination of surface working areas.
Pacific Plant · 230054430 CFR 56.17001 · $151.00 proposed penalty
Berms or guardrails.
Pacific Plant · 230054430 CFR 56.9300(b) · Significant and substantial (S&S) · $288.00 proposed penalty
Berms or guardrails.
Pacific Plant · 230054430 CFR 56.9300(b) · Significant and substantial (S&S) · $288.00 proposed penalty
Testing grounding systems.
Celatom Plant · 350323630 CFR 56.12028 · $151.00 proposed penalty
Safety defects; examination, correction and records.
Celatom Plant · 350323630 CFR 56.14100(c) · Significant and substantial (S&S) · $151.00 proposed penalty
Regular Safety and Health Inspection
Mapleton Depot Plant · 360312231.3 on-site hours reported
Safety defects; examination, correction and records.
Mapleton Depot Plant · 360312230 CFR 56.14100(b) · $151.00 proposed penalty
Handling of materials
EP Engineered Clays Corporation · 2200415Days restricted activity only
Accident narrative
The employee attempted to reconnect a hose when material splashed into EE's left eye. The employee received antibiotic medication to prevent infection
Compliance Follow-up Inspection
COLUMBIA PLANT · 38001381.5 on-site hours reported
Compliance Follow-up Inspection
Hurtsboro Plant · 01006174.0 on-site hours reported
Spot Inspection
COLUMBIA PLANT · 38001380.0 on-site hours reported
Housekeeping.
COLUMBIA PLANT · 380013830 CFR 56.20003(a) · $151.00 proposed penalty
Housekeeping.
COLUMBIA PLANT · 380013830 CFR 56.20003(a) · $151.00 proposed penalty
Safe access.
COLUMBIA PLANT · 380013830 CFR 56.11001 · $288.00 proposed penalty
Moving machine parts.
COLUMBIA PLANT · 380013830 CFR 56.14107(a) · $288.00 proposed penalty
Moving machine parts.
COLUMBIA PLANT · 380013830 CFR 56.14107(a) · $288.00 proposed penalty
Regular Safety and Health Inspection
Colado Mine · 26006723.0 on-site hours reported
103 (g) Written Notification Hazard Complaint Inspectio
COLUMBIA PLANT · 38001385.0 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.