U.S. Silica Company, LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Safety defects; examination, correction and records.
Colado Plant · 260068030 CFR 56.14100(b) · $151.00 proposed penalty
Moving machine parts.
Colado Plant · 260068030 CFR 56.14107(a) · Significant and substantial (S&S) · $1,679.00 proposed penalty
Electrical conductors.
Colado Plant · 260068030 CFR 56.12004 · $151.00 proposed penalty
Protection for openings around travelways.
Colado Plant · 260068030 CFR 56.11012 · Significant and substantial (S&S) · $3,736.00 proposed penalty
Impoundment Spot Inspection
Berkeley Plant · 46028056.0 on-site hours reported
Temporary, portable containers.
Rockwood Plant · 200060830 CFR 47.44(b) · $151.00 proposed penalty
Correction of dangerous conditions.
Mapleton Depot Plant · 360312230 CFR 56.12030 · $151.00 proposed penalty
Safety defects; examination, correction and records.
Mapleton Depot Plant · 360312230 CFR 56.14100(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Rockwood Plant · 200060816.5 on-site hours reported
Records of training.
Rockwood Plant · 200060830 CFR 46.9(a) · $151.00 proposed penalty
Inspection.
Mapleton Depot Plant · 360312230 CFR 56.4201(a)(1) · $151.00 proposed penalty
Regular Safety and Health Inspection
Colado Plant · 260068015.0 on-site hours reported
Regular Safety and Health Inspection
Mapleton Depot Plant · 360312228.3 on-site hours reported
Compliance Follow-up Inspection
EP Engineered Clays Corporation · 22004153.0 on-site hours reported
Regular Safety and Health Inspection
Port Elizabeth Plant · 28005102.0 on-site hours reported
Construction and maintenance of guards.
Mauricetown Plant · 280052630 CFR 56.14112(a)(1) · $151.00 proposed penalty
Regular Safety and Health Inspection
Mauricetown Plant · 28005269.5 on-site hours reported
Construction and maintenance of guards.
Pacific Plant · 230054430 CFR 56.14112(b) · $151.00 proposed penalty
Safe access.
Pacific Plant · 230054430 CFR 56.11001 · $151.00 proposed penalty
Regular Safety and Health Inspection
Pacific Plant · 230054425.5 on-site hours reported
103 (g) Written Notification Hazard Complaint Inspectio
COLUMBIA PLANT · 38001386.0 on-site hours reported
Regular Safety and Health Inspection
Celatom Plant · 350323615.8 on-site hours reported
Machinery, equipment, and tools.
Celatom Plant · 350323630 CFR 56.14205 · $151.00 proposed penalty
Regular Safety and Health Inspection
Dubberly Plant · 160048919.0 on-site hours reported
Regular Safety and Health Inspection
Celatom Mine · 35032375.0 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.