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Coolidge Plant 65 Metal/Non-Metal

Martin Marietta Arizona, LLC · Surface

Controlled by Martin Marietta Materials Inc

Coolidge, Pinal County, AZ · Active

MSHA Mine ID: 0203173

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Email me when a new MSHA incident is filed at Coolidge Plant 65.

Fatalities: 0
Total incidents: 1
Years on record: 2020
Latest incident: Mar 2020

Compliance record

MSHA citations since 2007

citations

significant & substantial

$9,198

proposed penalties

$8,092

paid to date

Source: MSHA violations data, updated weekly.

Quarterly safety rates

Citations per million employee-hours, as reported to MSHA

Quarter	Hours worked	Citations	Per 1M hrs
2025 Q4	6,967	0	0.0
2025 Q3	6,514	0	0.0
2025 Q1	7,136	0	0.0
2024 Q2	8,468	0	0.0
2024 Q1	7,628	0	0.0
2023 Q4	7,882	0	0.0
2023 Q3	8,405	0	0.0
2022 Q4	7,712	2	259.3

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

Reportable incidents

1 on file

2020 · 1 incident

March 4, 2020 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS

Hanson Aggregates LLC · Over-exertion in lifting objects

Clear sunny sky on dry level ground replacing conveyor belt roller assembly at chest height with assistance.