Martin Marietta Materials Inc safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Construction and maintenance of guards.
Mill Creek Limestone Quarry · 340185930 CFR 56.14112(a)(1) · $151.00 proposed penalty
Construction and maintenance of ladders.
Mill Creek Limestone Quarry · 340185930 CFR 56.11003 · $151.00 proposed penalty
Construction and maintenance of guards.
NORTH BRIDGEPORT QUARRY · 410336030 CFR 56.14112(b) · $151.00 proposed penalty
Electrical conductors.
NORTH BRIDGEPORT QUARRY · 410336030 CFR 56.12004 · $151.00 proposed penalty
Safety defects; examination, correction and records.
NORTH BRIDGEPORT QUARRY · 410336030 CFR 56.14100(b) · $151.00 proposed penalty
Safety defects; examination, correction and records.
NORTH BRIDGEPORT QUARRY · 410336030 CFR 56.14100(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Spec Agg Quarry · 050086028.8 on-site hours reported
Regular Safety and Health Inspection
New Melle Mine · 230204353.0 on-site hours reported
Regular Safety and Health Inspection
Mill Creek Limestone Quarry · 340185924.0 on-site hours reported
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
Housekeeping.
MIDWAY QUARRY · 400116930 CFR 56.20003(b) · $151.00 proposed penalty
Identification of power switches.
MIDWAY QUARRY · 400116930 CFR 56.12018 · Significant and substantial (S&S) · $336.00 proposed penalty
Inspection and cover plates.
NORTH BRIDGEPORT QUARRY · 410336030 CFR 56.12032 · $151.00 proposed penalty
Slip or fall of person
Randolph Deep Mine · 2302308Days away from work only
Accident narrative
Employee was injured when EE fell through an elevated platform in a restricted area of the underground mine after EE climbed over a berm to access the restricted, inactive area in violation of the mine's rules and EE's training. The employee was not authorized to enter the restricted, inactive area and was not performing any work activity at the time the accident occurred.
Non-Fatal Accident Investigation
Randolph Deep Mine · 230230824.0 on-site hours reported
Violation — cited standard not reported
Randolph Deep Mine · 2302308Regular Safety and Health Inspection
Bluff City Mine · 110012231.5 on-site hours reported
Regular Safety and Health Inspection
Kentucky Avenue Mine · 120176244.5 on-site hours reported
Regular Safety and Health Inspection
Silver Lake West Sand · 14017024.8 on-site hours reported
Regular Safety and Health Inspection
San Pedro Quarry · 41013375.0 on-site hours reported
Correction of hazardous conditions.
Bluff City Mine · 110012230 CFR 57.3200 · $151.00 proposed penalty
Moving machine parts.
Bluff City Mine · 110012230 CFR 57.14107(a) · $151.00 proposed penalty
Electrical conductors.
Silver Lake West Sand · 140170230 CFR 56.12004 · $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.