U.S. Silica Company, LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Electrical conductors.
Fernley Operations · 260195030 CFR 56.12004 · $151.00 proposed penalty
Inspection.
Fernley Operations · 260195030 CFR 56.4201(a)(2) · $151.00 proposed penalty
Inspection and cover plates.
Fernley Operations · 260195030 CFR 56.12032 · $151.00 proposed penalty
Requirement for container labels.
Fernley Operations · 260195030 CFR 47.41(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
Fernley Operations · 260195022.5 on-site hours reported
Locking transformer enclosures.
Clark Operations · 260067730 CFR 56.12068 · Significant and substantial (S&S) · $1,037.00 proposed penalty
Requirements for written safety program.
Clark Operations · 260067730 CFR 56.23003(b) · $151.00 proposed penalty
Testing grounding systems.
Clark Operations · 260067730 CFR 56.12028 · $151.00 proposed penalty
Safety defects; examination, correction and records.
Clark Operations · 260067730 CFR 56.14100(b) · $151.00 proposed penalty
Safe access.
Clark Operations · 260067730 CFR 56.11001 · $151.00 proposed penalty
Regular Safety and Health Inspection
Clark Operations · 260067718.3 on-site hours reported
Verbal Hazard Complaint Inspections
COLUMBIA PLANT · 38001386.0 on-site hours reported
Safety defects; examination, correction and records.
COLUMBIA PLANT · 380013830 CFR 56.14100(c) · $226.00 proposed penalty
Housekeeping.
COLUMBIA PLANT · 380013830 CFR 56.20003(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
FOWLKES MINE · 22004605.5 on-site hours reported
Regular Safety and Health Inspection
Middleton Operations · 400296823.0 on-site hours reported
Regular Safety and Health Inspection
Millen Plant · 090123215.5 on-site hours reported
Regular Safety and Health Inspection
Colado Mine · 26006726.0 on-site hours reported
Compliance Follow-up Inspection
EP Engineered Clays Corporation · 22004151.0 on-site hours reported
Regular Safety and Health Inspection
Mill Creek Plant #37 · 34003779.0 on-site hours reported
Housekeeping.
Colado Plant · 260068030 CFR 56.20003(a) · $226.00 proposed penalty
Inspection and cover plates.
Colado Plant · 260068030 CFR 56.12032 · $151.00 proposed penalty
Safe access.
Colado Plant · 260068030 CFR 56.11001 · Significant and substantial (S&S) · $1,126.00 proposed penalty
Slip or fall of person
Mapleton Depot Plant · 3603122Days restricted activity only
Accident narrative
The employee fell while traversing an irregular surface. They put their arms out to catch themselves and sustained a closed fracture to the left radius and ulna.
Safety defects; examination, correction and records.
Colado Plant · 260068030 CFR 56.14100(b) · $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.