Martin Marietta Materials Inc safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Safety defects; examination, correction and records.
Mill Creek Limestone Quarry · 340185930 CFR 56.14100(b)
Vehicles.
Mill Creek Limestone Quarry · 340185930 CFR 56.6202(a)(8)(ii)
Requirements for written safety program.
Mill Creek Limestone Quarry · 340185930 CFR 56.23003(b)
Regular Safety and Health Inspection
Alden Quarry and Shop · 13002289.8 on-site hours reported
Regular Safety and Health Inspection
East Alamance Quarry · 31020217.5 on-site hours reported
Regular Safety and Health Inspection
New Miami Plant · 33043833.0 on-site hours reported
Combustible waste.
Walstrum Quarry · 050393530 CFR 56.4104(b)
Safe access.
Sully Mine · 130006330 CFR 57.11001
Scaffolds and working platforms.
Sully Mine · 130006330 CFR 57.11027
Safety defects; examination, correction and records.
Sully Mine · 130006330 CFR 57.14100(a)
Brakes.
Alden Quarry and Shop · 130022830 CFR 56.14101(a)(2)
Identification of power switches.
Alden Quarry and Shop · 130022830 CFR 56.12018
Examination of working places.
Fort Calhoun Underground Mine · 250130030 CFR 57.18002(a)
Inspection and cover plates.
Mill Creek Limestone Quarry · 340185930 CFR 56.12032
Regular Safety and Health Inspection
Sully Mine · 130006320.3 on-site hours reported
Verbal Hazard Complaint Inspections
Benson Quarry · 31019792.5 on-site hours reported
Warning signs.
Walstrum Quarry · 050393530 CFR 56.4101
Warning signs.
Fort Calhoun Underground Mine · 250130030 CFR 57.4101
Escape routes.
Fort Calhoun Underground Mine · 250130030 CFR 57.11051(b)
Correction of dangerous conditions.
Mill Creek Limestone Quarry · 340185930 CFR 56.12030 · Significant and substantial (S&S)
Air receiver tanks.
Mill Creek Limestone Quarry · 340185930 CFR 56.13011
Experienced miner training.
Mill Creek Limestone Quarry · 340185930 CFR 48.26(a)
Experienced miner training.
Mill Creek Limestone Quarry · 340185930 CFR 48.26(a)
103 (g) Written Notification Hazard Complaint Inspectio
Walstrum Quarry · 05039354.0 on-site hours reported
Regular Safety and Health Inspection
Walstrum Quarry · 050393520.3 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.