U.S. Silica Company, LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Brakes.
Rockwood Plant · 200060830 CFR 56.14101(a)(2) · $151.00 proposed penalty
Regular Safety and Health Inspection
Rockwood Plant · 200060815.3 on-site hours reported
Verbal Hazard Complaint Inspections
Colado Plant · 26006801.0 on-site hours reported
Verbal Hazard Complaint Inspections
COLUMBIA PLANT · 38001388.0 on-site hours reported
Safe access.
COLUMBIA PLANT · 380013830 CFR 56.11001 · $151.00 proposed penalty
Construction and maintenance of guards.
COLUMBIA PLANT · 380013830 CFR 56.14112(b) · $151.00 proposed penalty
Special Emphasis Programs
Berkeley Plant · 46028051.0 on-site hours reported
Identification of power switches.
Montpelier Plant · 440282930 CFR 56.12018 · $177.00 proposed penalty
Spot Inspection
COLUMBIA PLANT · 38001389.0 on-site hours reported
Safety defects; examination, correction and records.
Mapleton Depot Plant · 360312230 CFR 56.14100(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Middleton Operations · 400296810.8 on-site hours reported
Regular Safety and Health Inspection
Mapleton Depot Plant · 360312244.5 on-site hours reported
Regular Safety and Health Inspection
Montpelier Plant · 440282923.3 on-site hours reported
Disorders (repeated trauma)
Colado Mine · 2600672Occupatnal illness not deg 1-6
Accident narrative
EE had partial distal bicep tendon tear in the right arm requiring surgical repair. Injury determined to be the result of tendinitis
Regular Safety and Health Inspection
Jackson Plant · 40029374.5 on-site hours reported
Safe access.
Pacific Plant · 230054430 CFR 56.11001 · $151.00 proposed penalty
Moving machine parts.
Pacific Plant · 230054430 CFR 56.14107(a) · $193.00 proposed penalty
Illumination of surface working areas.
Pacific Plant · 230054430 CFR 56.17001 · $151.00 proposed penalty
103 (g) Written Notification Hazard Complaint Inspectio
COLUMBIA PLANT · 38001389.0 on-site hours reported
Regular Safety and Health Inspection
Pacific Plant · 230054442.3 on-site hours reported
Correction of dangerous conditions.
Pacific Plant · 230054430 CFR 56.12030 · Significant and substantial (S&S) · $2,503.00 proposed penalty
Protection for openings around travelways.
Mill Creek Plant #39 · 340083630 CFR 56.11012 · $151.00 proposed penalty
Regular Safety and Health Inspection
Mill Creek Plant #39 · 340083618.3 on-site hours reported
Exposure limits for airborne contaminants.
COLUMBIA PLANT · 380013830 CFR 56.5001(a)/56.5005 · $151.00 proposed penalty
Regular Safety and Health Inspection
FOWLKES MINE · 22004608.0 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.