Buzzi Unicem USA safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Safety defects; examination, correction and records.
Lone Star Industries · 120006430 CFR 56.14100(c) · $177.00 proposed penalty
Heat sources.
Lone Star Industries · 120006430 CFR 56.4500 · $267.00 proposed penalty
Machinery
Lone Star Quarry & Mill · 2300134No dys awy frm wrk,no rstr act
Accident narrative
EE was washing out the raw mill posimetric chute with a water lance. The water hose became entangled with the door, causing the door to begin closing. The door struck the employee's right right wrist resulting in a contusion. The injury became reportable on 11/18/25 when the doctor performed professional medical treatment during a follow up visit.
Examination of working places.
Lone Star Industries · 120006430 CFR 56.18002(a) · $177.00 proposed penalty
103 (g) Written Notification Hazard Complaint Inspectio
Lone Star Industries · 12000644.0 on-site hours reported
Testing grounding systems.
Lone Star Industries · 120006430 CFR 56.12028 · $2,503.00 proposed penalty
Housekeeping.
Lone Star Industries · 120006430 CFR 56.20003(a) · $883.00 proposed penalty
Regular Safety and Health Inspection
Lone Star Industries · 120006457.8 on-site hours reported
Availability of an MSDS.
Lone Star Industries · 120006430 CFR 47.54(a) · $226.00 proposed penalty
Requirement for container labels.
Lone Star Industries · 120006430 CFR 47.41(a) · $226.00 proposed penalty
New task training.
Lone Star Industries · 120006430 CFR 46.7(a) · Significant and substantial (S&S) · $1,126.00 proposed penalty
Storage tank foundations.
Lone Star Industries · 120006430 CFR 56.4401 · $226.00 proposed penalty
Testing grounding systems.
Lone Star Industries · 120006430 CFR 56.12028 · $2,503.00 proposed penalty
Slip or fall of person
Lone Star Industries · 1200064Days restricted activity only
Accident narrative
Stepped off of forklift onto uneven ground causing a minor fracture to left foot injured employee is on restricted duty
Handling of materials
Lone Star Industries · 1200064No dys awy frm wrk,no rstr act
Accident narrative
While cleaning a chute with water the individual had wet high alkali material get behind EE's safety glasses and into EE's eyes causing minor chemical burns
Spot Inspection
Lone Star Quarry & Mill · 23001348.0 on-site hours reported
Falling/sliding/rolling materials
Lone Star Industries · 1200064Days restricted activity only
Accident narrative
While inspecting a port on the tower the employee got hot dust in their face causing an eye abrasion and 2nd degree burns to face.
Spot Inspection
MARYNEAL QUARRY AND MILL · 410028321.0 on-site hours reported
Spot Inspection
LONE STAR PRYOR PLT MILL & QY · 34012894.0 on-site hours reported
Inspection.
LONE STAR PRYOR PLT MILL & QY · 340128930 CFR 56.4201(a)(1) · $151.00 proposed penalty
Housekeeping.
LONE STAR PRYOR PLT MILL & QY · 340128930 CFR 56.20003(a) · $193.00 proposed penalty
Handtools (nonpowered)
LONE STAR PRYOR PLT MILL & QY · 3401289No dys awy frm wrk,no rstr act
Accident narrative
The employee was using a knife to cut a hose (not the company approved safety blade). While cutting the hose the employee cut EE's left forearm.
Slip or fall of person
LONE STAR PRYOR PLT MILL & QY · 3401289No dys awy frm wrk,no rstr act
Accident narrative
While the employee was climbing down a fixed ladder EE slipped on the 3rd rung from the bottom and landed awkwardly on EE's left ankle.
Verbal Hazard Complaint Inspections
Lone Star Industries · 12000641.3 on-site hours reported
103 (g) Written Notification Hazard Complaint Inspectio
Lone Star Industries · 12000643.8 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.