Summit Materials LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Electrical conductors.
Hyrum Pit · 420236030 CFR 56.12004 · $177.00 proposed penalty
Securing gas cylinders.
MONA PIT · 420221230 CFR 56.16005 · $151.00 proposed penalty
Work on electrically-powered equipment.
MONA PIT · 420221230 CFR 56.12016 · Significant and substantial (S&S) · $883.00 proposed penalty
Locking transformer enclosures.
MONA PIT · 420221230 CFR 56.12068 · $177.00 proposed penalty
Regular Safety and Health Inspection
MONA PIT · 420221220.0 on-site hours reported
Requirements for written safety program.
Hays Quarry · 410451430 CFR 56.23003(c) · $151.00 proposed penalty
General instructions for completing MSHA Form 7000-1.
Hays Quarry · 410451430 CFR 50.20-1 · $151.00 proposed penalty
Guarding electrical connections and resistor grids.
Hays Quarry · 410451430 CFR 56.12023 · $151.00 proposed penalty
Regular Safety and Health Inspection
Hays Quarry · 41045149.8 on-site hours reported
Regular Safety and Health Inspection
HIGHLAND PIT · 42009417.0 on-site hours reported
Electrical conductors.
HIGHLAND PIT · 420094130 CFR 56.12004 · Significant and substantial (S&S) · $883.00 proposed penalty
Inspection and cover plates.
HIGHLAND PIT · 420094130 CFR 56.12032 · $151.00 proposed penalty
Electrical conductors.
HIGHLAND PIT · 420094130 CFR 56.12004 · $177.00 proposed penalty
Housekeeping.
HIGHLAND PIT · 420094130 CFR 56.20003(a) · $151.00 proposed penalty
Construction and maintenance of guards.
HIGHLAND PIT · 420094130 CFR 56.14112(a)(1) · $177.00 proposed penalty
Electrical conductors.
HIGHLAND PIT · 420094130 CFR 56.12004 · $177.00 proposed penalty
Safety defects; examination, correction and records.
HIGHLAND PIT · 420094130 CFR 56.14100(d) · $151.00 proposed penalty
Regular Safety and Health Inspection
Hockley Plant · 41034916.0 on-site hours reported
Regular Safety and Health Inspection
Benjamin · 42025286.5 on-site hours reported
Berms or guardrails.
Hockley Plant · 410349130 CFR 56.9300(a) · $151.00 proposed penalty
General requirements.
Hockley Plant · 410349130 CFR 56.4200(b)(2) · $151.00 proposed penalty
Electrical conductors.
Benjamin · 420252830 CFR 56.12004 · Significant and substantial (S&S) · $818.00 proposed penalty
Regular Safety and Health Inspection
Plant 1 Avondale · 02033902.3 on-site hours reported
Insulation and fittings for power wires and cables.
Crusher LU300-LU400 · 410257730 CFR 56.12008 · $151.00 proposed penalty
Splices and repairs of power cables.
Crusher LU300-LU400 · 410257730 CFR 56.12013(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.