Summit Materials LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Regular Safety and Health Inspection
Stockton Pit · 42024806.0 on-site hours reported
Moving machine parts.
Eagle Lake Plant · 410488930 CFR 56.14107(a) · $151.00 proposed penalty
Horns and backup alarms.
Stockton Pit · 420248030 CFR 56.14132(a) · $177.00 proposed penalty
Inspection and cover plates.
Stockton Pit · 420248030 CFR 56.12032 · $151.00 proposed penalty
Moving machine parts.
Stockton Pit · 420248030 CFR 56.14107(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
Eagle Lake Plant · 41048899.8 on-site hours reported
Warning signs.
Eagle Lake Plant · 410488930 CFR 56.4101 · $177.00 proposed penalty
Securing gas cylinders.
Sawyer Quarry · 340195030 CFR 56.16005 · $151.00 proposed penalty
Regular Safety and Health Inspection
Durbin Quarry · 14017198.8 on-site hours reported
Regular Safety and Health Inspection
Sawyer Quarry · 340195015.5 on-site hours reported
Records of training.
Durbin Quarry · 140171930 CFR 46.9(b)(2) · $151.00 proposed penalty
Records of training.
Durbin Quarry · 140171930 CFR 46.9(d)(3) · $151.00 proposed penalty
Records of training.
Durbin Quarry · 140171930 CFR 46.9(d)(5) · $151.00 proposed penalty
Moving machine parts.
Durbin Quarry · 140171930 CFR 56.14107 · $151.00 proposed penalty
Regular Safety and Health Inspection
Hanna's Bend Plant · 41046318.0 on-site hours reported
Berms or guardrails.
Hanna's Bend Plant · 410463130 CFR 56.9300(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Portable Plant #3 · 14014647.8 on-site hours reported
Regular Safety and Health Inspection
Columbus Plant · 410439312.5 on-site hours reported
Records of training.
Portable Plant #3 · 140146430 CFR 46.9(d)(1) · $151.00 proposed penalty
Machinery, equipment, and tools.
Portable Plant #3 · 140146430 CFR 56.14205 · $151.00 proposed penalty
Guarding electrical connections and resistor grids.
Columbus Plant · 410439330 CFR 56.12023 · $151.00 proposed penalty
Moving machine parts.
Columbus Plant · 410439330 CFR 56.14107(a) · $151.00 proposed penalty
Moving machine parts.
Columbus Plant · 410439330 CFR 56.14107(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
Hyrum Pit · 420236014.0 on-site hours reported
Moving machine parts.
Hyrum Pit · 420236030 CFR 56.14107(a) · $177.00 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.