Martin Marietta Materials, Inc. safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Inspection and cover plates.
Iron Mountain Quarry · 230021030 CFR 56.12032 · $151.00 proposed penalty
Electrical conductors.
Iron Mountain Quarry · 230021030 CFR 56.12004 · $151.00 proposed penalty
New task training.
Berkeley Quarry · 380007230 CFR 46.7(a) · $168.00 proposed penalty
Safety defects; examination, correction and records.
Berkeley Quarry · 380007230 CFR 56.14100(b) · $151.00 proposed penalty
Safety defects; examination, correction and records.
Berkeley Quarry · 380007230 CFR 56.14100(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Davis Quarry · 34012999.5 on-site hours reported
Impoundment Spot Inspection
RED HILL QUARRY · 44000723.0 on-site hours reported
Construction and maintenance of guards.
Durham Mine & Mill · 130122530 CFR 57.14112(a) · $151.00 proposed penalty
Electrical conductors.
Durham Mine & Mill · 130122530 CFR 56.12004 · $151.00 proposed penalty
Housekeeping.
GREENWOOD QUARRY · 230014130 CFR 56.20003(a) · $151.00 proposed penalty
Barricades and warning signs.
GREENWOOD QUARRY · 230014130 CFR 56.20011 · $245.00 proposed penalty
Safety defects; examination, correction and records.
Iron Mountain Quarry · 230021030 CFR 56.14100(b) · $151.00 proposed penalty
General requirements for boilers and pressure vessels.
Iron Mountain Quarry · 230021030 CFR 56.13001 · $151.00 proposed penalty
Spillage and leakage.
Fort Calhoun Underground Mine · 250130030 CFR 57.4102 · $151.00 proposed penalty
Other
CHARLOTTE QUARRY · 3100057No dys awy frm wrk,no rstr act
Accident narrative
Employee was climbing ladder into equipment and felt a pop in their right knee. Injury did not become reportable until 7/1/2025 when employee was prescribed and attended physical therapy.
Regular Safety and Health Inspection
Kentucky Avenue Mine · 120176247.8 on-site hours reported
Regular Safety and Health Inspection
Durham Mine & Mill · 130122525.5 on-site hours reported
Regular Safety and Health Inspection
GREENWOOD QUARRY · 230014119.8 on-site hours reported
Regular Safety and Health Inspection
Iron Mountain Quarry · 230021029.5 on-site hours reported
Regular Safety and Health Inspection
Fort Calhoun Underground Mine · 250130093.3 on-site hours reported
Regular Safety and Health Inspection
ASHEBORO · 31000664.0 on-site hours reported
Regular Safety and Health Inspection
Thomasville Quarry · 310147514.3 on-site hours reported
Safety defects; examination, correction and records.
Kentucky Avenue Mine · 120176230 CFR 57.14100(c) · $245.00 proposed penalty
High-pressure hose connections.
Fort Calhoun Underground Mine · 250130030 CFR 57.13021 · $697.00 proposed penalty
Seat belts for surface haulage trucks.
Fort Calhoun Underground Mine · 250130030 CFR 57.14131(b) · $313.00 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.