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Martin Marietta Materials Inc safety activity

MSHA violations, accident reports and inspections across the current mine portfolio.

2025-01-01 – 2026-10-31Database snapshot · 2026-10-31

Safety activity

  1. Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.

    violationRecord 5045869
    Hartford Quarry · 1500095

    30 CFR 50.20(a) · $151.00 proposed penalty

  2. Combustible waste.

    violationRecord 5114429
    Yellow Medicine Quarry · 2100033

    30 CFR 56.4104(b) · $151.00 proposed penalty

  3. Spillage and leakage.

    violationRecord 5114428
    Yellow Medicine Quarry · 2100033

    30 CFR 56.4102 · $151.00 proposed penalty

  4. Spot Inspection

    inspectionRecord F00BE1E
    Bluff City Mine · 1100122

    4.0 on-site hours reported

  5. Spot Inspection

    inspectionRecord F0142C6
    Cumberland Quarry · 1500037

    2.5 on-site hours reported

  6. Regular Safety and Health Inspection

    inspectionRecord F0370A5
    Yellow Medicine Quarry · 2100033

    12.3 on-site hours reported

  7. Exploding vessels under pressure

    accidentRecord 220260890027
    NORTH BRIDGEPORT QUARRY · 4103360

    Perm tot or perm prtl disablty

    Accident narrative

    An OTR technician at a quarry installed two spare tires and a new wheel on a Komatsu WA900 loader. While demounting the scrap tire/wheel in the storage yard, EE removed the O-ring with EE's left hand. Residual pressure caused the bead seat band to spring upward, striking EE's left thumb and index finger. This amputated the tip of EE's left index finger and crushed EE's left thumb.

  8. Regular Safety and Health Inspection

    inspectionRecord F02776A
    DOUGLASVILLE MINE SITE · 0900024

    7.0 on-site hours reported

  9. Spot Inspection

    inspectionRecord F025895
    HUGO · 3400061

    10.0 on-site hours reported

  10. Spot Inspection

    inspectionRecord F025894
    SAWYER · 3401634

    11.8 on-site hours reported

  11. Spot Inspection

    inspectionRecord F018C85
    MIDWAY QUARRY · 4001169

    22.0 on-site hours reported

  12. Safety defects; examination, correction and records.

    violationRecord 5045868
    Hartford Quarry · 1500095

    30 CFR 56.14100(b) · $151.00 proposed penalty

  13. Barricades and warning signs.

    violationRecord 5064248
    SDI Aggregates LLC · 0801336

    30 CFR 56.20011 · $151.00 proposed penalty

  14. Barricades and warning signs.

    violationRecord 5064247
    SDI Aggregates LLC · 0801336

    30 CFR 56.20011 · $465.00 proposed penalty

  15. Regular Safety and Health Inspection

    inspectionRecord F01605E
    SDI Aggregates LLC · 0801336

    14.5 on-site hours reported

  16. Regular Safety and Health Inspection

    inspectionRecord F037B06
    MN Reclamation Crew · 2103690

    3.8 on-site hours reported

  17. Spot Inspection

    inspectionRecord F031A18
    CHARLOTTE QUARRY · 3100057

    6.8 on-site hours reported

  18. Testing grounding systems.

    violationRecord 5064635
    Fort Myers Quarry · 0801203

    30 CFR 56.12028 · $245.00 proposed penalty

  19. Housekeeping.

    violationRecord 5064634
    Fort Myers Quarry · 0801203

    30 CFR 56.20003(b) · $151.00 proposed penalty

  20. Warning signs.

    violationRecord 5064633
    Fort Myers Quarry · 0801203

    30 CFR 56.4101 · $151.00 proposed penalty

  21. Insulation and fittings for power wires and cables.

    violationRecord 5064614
    Fort Myers Quarry · 0801203

    30 CFR 56.12008 · $151.00 proposed penalty

  22. Stairstep clearance.

    violationRecord 5064246
    SDI Aggregates LLC · 0801336

    30 CFR 56.11010 · $313.00 proposed penalty

  23. Powered haulage

    accidentRecord 220260890088
    Troy West Quarry · 2302324

    Days away from work only

    Accident narrative

    The employee was entering a skid steer, lost their footing and fell backwards, catching their left leg between the skid steer and the fork attachment fracturing their leg.

  24. Impoundment Spot Inspection

    inspectionRecord 4135153
    POMONA · 3100052

    5.5 on-site hours reported

  25. Regular Safety and Health Inspection

    inspectionRecord F031A17
    KANNAPOLIS QUARRY · 3100070

    7.8 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.