Martin Marietta Materials Southwest LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Written safety program.
Mill Creek Limestone Quarry · 340185930 CFR 56.23002(a) · $151.00 proposed penalty
Training plans.
Mill Creek Limestone Quarry · 340185930 CFR 46.3(a) · $151.00 proposed penalty
Protection of power conductors from mobile equipment.
Mill Creek Limestone Quarry · 340185930 CFR 56.12005 · $151.00 proposed penalty
Grounding circuit enclosures.
Mill Creek Limestone Quarry · 340185930 CFR 56.12025 · $151.00 proposed penalty
Warning signs.
Mill Creek Limestone Quarry · 340185930 CFR 56.4101 · $151.00 proposed penalty
Moving machine parts.
Mill Creek Limestone Quarry · 340185930 CFR 56.14107(a) · $151.00 proposed penalty
New task training.
Mill Creek Limestone Quarry · 340185930 CFR 46.7 · $168.00 proposed penalty
Construction and maintenance of guards.
Mill Creek Limestone Quarry · 340185930 CFR 56.14112(b) · $151.00 proposed penalty
Construction and maintenance of guards.
Mill Creek Limestone Quarry · 340185930 CFR 56.14112(b) · $151.00 proposed penalty
Parking procedures for unattended equipment.
NORTH BRIDGEPORT QUARRY · 410336030 CFR 56.14207 · $151.00 proposed penalty
Written safety program.
Mill Creek Limestone Quarry · 340185930 CFR 56.23002(a) · $151.00 proposed penalty
Training plans.
Mill Creek Limestone Quarry · 340185930 CFR 46.3(a) · $151.00 proposed penalty
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Mill Creek Limestone Quarry · 340185930 CFR 50.30(a) · $151.00 proposed penalty
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Mill Creek Limestone Quarry · 340185930 CFR 50.30(a) · $151.00 proposed penalty
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Mill Creek Limestone Quarry · 340185930 CFR 50.30(a) · $151.00 proposed penalty
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Mill Creek Limestone Quarry · 340185930 CFR 50.30(a) · $151.00 proposed penalty
Horns and backup alarms.
Mill Creek Limestone Quarry · 340185930 CFR 56.14132(a) · Significant and substantial (S&S) · $2,133.00 proposed penalty
Safety defects; examination, correction and records.
Mill Creek Limestone Quarry · 340185930 CFR 56.14100(b) · $151.00 proposed penalty
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
Mill Creek Limestone Quarry · 340185924.0 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.