U.S. Silica Energy Company safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Spot Inspection
Lamesa Plant · 41053630.8 on-site hours reported
Parking procedures for unattended equipment.
Lamesa Plant · 410536330 CFR 56.14207 · $151.00 proposed penalty
Horns and backup alarms.
Lamesa Plant · 410536330 CFR 56.14132(a) · $151.00 proposed penalty
Horns and backup alarms.
Lamesa Plant · 410536330 CFR 56.14132(a) · $151.00 proposed penalty
Site-specific hazard awareness training.
Lamesa Plant · 410536330 CFR 46.11(b)(4) · Significant and substantial (S&S) · $2,569.00 proposed penalty
Slip or fall of person
Lamesa Plant · 4105363Injuries involvng nonemployees
Accident narrative
It is believed that the customer truck driver fell from EE's trailer to the ground while stepping from the trailer to the safe rack. The fall resulted in multiple injuries requiring medical attention and a loss of work days.
Non-Fatal Accident Investigation
Lamesa Plant · 41053636.3 on-site hours reported
Moving machine parts.
Crane County Plant · 410533130 CFR 56.14107 · $151.00 proposed penalty
Safe access.
Lamesa Plant · 410536330 CFR 56.11001 · $151.00 proposed penalty
Regular Safety and Health Inspection
Lamesa Plant · 410536325.5 on-site hours reported
Safety defects; examination, correction and records.
Crane County Plant · 410533130 CFR 56.14100(b) · $151.00 proposed penalty
Inspection.
Crane County Plant · 410533130 CFR 56.4201(a)(1) · $151.00 proposed penalty
Regular Safety and Health Inspection
Crane County Plant · 410533147.5 on-site hours reported
Fuel lines.
Sparta, WI Plant · 470364430 CFR 56.4501 · Significant and substantial (S&S)
Regular Safety and Health Inspection
Sparta, WI Plant · 470364419.3 on-site hours reported
Slip or fall of person
Lamesa Plant · 4105363No dys awy frm wrk,no rstr act
Accident narrative
Employee fell while preparing to fuel a D6 dozer after a ladder/stool failed, resulting in a right ankle fracture.
Handling of materials
Crane County Plant · 4105331Days away from work only
Accident narrative
Employee was attempting to move a spout with EE's right leg when EE felt pain in EE's right calf. Employee began physical therapy on 03/02/2026 making this reportable.
Slip or fall of person
Crane County Plant · 4105331No dys awy frm wrk,no rstr act
Accident narrative
The employee fell while descending a stairway and sustained a hand laceration from the expanded metal stair runner. The injury required stitches.
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Lamesa Plant · 410536330 CFR 50.30(a) · $151.00 proposed penalty
Safety defects; examination, correction and records.
Lamesa Plant · 410536330 CFR 56.14100(c) · $151.00 proposed penalty
Construction and maintenance of guards.
Lamesa Plant · 410536330 CFR 56.14112(a)(1) · $151.00 proposed penalty
Construction and maintenance of guards.
Lamesa Plant · 410536330 CFR 56.14112(a)(1) · $151.00 proposed penalty
Oxygen cylinder storage.
Lamesa Plant · 410536330 CFR 56.4601 · $432.00 proposed penalty
Verbal Hazard Complaint Inspections
Lamesa Plant · 41053630.0 on-site hours reported
Regular Safety and Health Inspection
Lamesa Plant · 410536331.5 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.