Martin Marietta Materials Southwest LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Regular Safety and Health Inspection
NORTH BRIDGEPORT QUARRY · 410336045.5 on-site hours reported
Warning signs.
Mill Creek Limestone Quarry · 340185930 CFR 56.4101 · $151.00 proposed penalty
Inspection.
Mill Creek Limestone Quarry · 340185930 CFR 56.4201(a)(1) · $151.00 proposed penalty
Inspection and cover plates.
NORTH BRIDGEPORT QUARRY · 410336030 CFR 56.12032 · $151.00 proposed penalty
Regular Safety and Health Inspection
San Pedro Quarry · 41013375.0 on-site hours reported
Verbal Hazard Complaint Inspections
Bedrock Plant · 41032837.0 on-site hours reported
Spot Inspection
Bridgeport Stone Plant · 410000712.0 on-site hours reported
Verbal Hazard Complaint Inspections
Martin Marietta Merkel Plant · 41038484.0 on-site hours reported
Special Emphasis Programs
Bells/Savoy Aggregate Operations · 41040190.3 on-site hours reported
Spot Inspection
Beckmann Quarry · 410133511.8 on-site hours reported
Handtools (nonpowered)
Martin Marietta Slaton Plant · 4101111Days away from work only
Accident narrative
Employee was installing a bucket cylinder pin with pry bar, the end of the pinch bar broke off and jammed their hand against the corner of the auxiliary valve
Horns and backup alarms.
Bridgeport Stone Plant · 410000730 CFR 56.14132(a) · $151.00 proposed penalty
Moving machine parts.
Bridgeport Stone Plant · 410000730 CFR 56.14107(a) · $151.00 proposed penalty
Requirement for container labels.
Bridgeport Stone Plant · 410000730 CFR 47.41(a) · $151.00 proposed penalty
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Bridgeport Stone Plant · 410000730 CFR 50.30(a) · $151.00 proposed penalty
Warning signs.
Bridgeport Stone Plant · 410000730 CFR 56.4101 · $151.00 proposed penalty
Machinery
Hunter Stone · 4105230Days restricted activity only
Accident narrative
Employee cutting underneath of catwalk on CAT 777 haul truck with 90 degree air die grinder cut top of left hand. Cut resulted in five stitches.
Regular Safety and Health Inspection
Bridgeport Stone Plant · 410000757.5 on-site hours reported
Regular Safety and Health Inspection
Rio Medina · 41035949.0 on-site hours reported
Regular Safety and Health Inspection
Bedrock Plant · 41032835.5 on-site hours reported
Securing gas cylinders.
Beckmann Quarry · 410133530 CFR 56.16005 · $151.00 proposed penalty
Safe access.
Beckmann Quarry · 410133530 CFR 56.11001 · $151.00 proposed penalty
Housekeeping.
Beckmann Quarry · 410133530 CFR 56.20003(a) · Significant and substantial (S&S) · $755.00 proposed penalty
Handrails and toeboards.
Beckmann Quarry · 410133530 CFR 56.11002 · $151.00 proposed penalty
Regular Safety and Health Inspection
Perryville Aggregates Plant #2 · 16014173.5 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.