Thompson Materials safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Safety defects; examination, correction and records.
Guns Up · 410568930 CFR 56.14100(b) · $151.00 proposed penalty
Berms or guardrails.
Guns Up · 410568930 CFR 56.9300(b) · Significant and substantial (S&S) · $165.00 proposed penalty
Regular Safety and Health Inspection
Mertzon Quarry · 41057134.0 on-site hours reported
Traffic control.
Mertzon Quarry · 410571330 CFR 56.9100(a) · $151.00 proposed penalty
Berms or guardrails.
Mertzon Quarry · 410571330 CFR 56.9300(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
MORELAND PIT · 41056808.5 on-site hours reported
Requirement for container labels.
Portable #3 · 410548530 CFR 47.41(a) · $151.00 proposed penalty
Working alone.
Portable #3 · 410548530 CFR 56.18020 · $151.00 proposed penalty
Requirement for container labels.
MORELAND PIT · 410568030 CFR 47.41(a) · $177.00 proposed penalty
Guarding electrical connections and resistor grids.
MORELAND PIT · 410568030 CFR 56.12023 · $177.00 proposed penalty
Guarding electrical connections and resistor grids.
MORELAND PIT · 410568030 CFR 56.12023 · $177.00 proposed penalty
Regular Safety and Health Inspection
Portable #3 · 41054857.0 on-site hours reported
Compliance Follow-up Inspection
Mertzon Quarry · 41057130.5 on-site hours reported
Regular Safety and Health Inspection
Mertzon Quarry · 41057136.0 on-site hours reported
Examination of working places.
Mertzon Quarry · 410571330 CFR 56.18002(a) · $151.00 proposed penalty
Operators stations.
Mertzon Quarry · 410571330 CFR 56.14103(b) · $151.00 proposed penalty
Moving machine parts.
Mertzon Quarry · 410571330 CFR 56.14107(a) · $151.00 proposed penalty
Compliance Follow-up Inspection
Aubrye Pit · 41056030.3 on-site hours reported
Regular Safety and Health Inspection
Guns Up · 41056890.0 on-site hours reported
Access to stationary electrical equipment or switchgear.
Guns Up · 410568930 CFR 56.12019 · $151.00 proposed penalty
Compliance Follow-up Inspection
Mertzon Quarry · 41057130.3 on-site hours reported
Safety defects; examination, correction and records.
Aubrye Pit · 410560330 CFR 56.14100(b) · $151.00 proposed penalty
Berms or guardrails.
Aubrye Pit · 410560330 CFR 56.9300(a) · $151.00 proposed penalty
Moving machine parts.
Aubrye Pit · 410560330 CFR 56.14107(a) · $151.00 proposed penalty
Housekeeping.
Aubrye Pit · 410560330 CFR 56.20003(a) · $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.