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Clarkdale Plant #24 Metal/Non-Metal

Martin Marietta Materials, Inc · Surface

Controlled by Martin Marietta Materials Inc

Mesa, Yavapai County, AZ · Active

MSHA Mine ID: 0202524

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Email me when a new MSHA incident is filed at Clarkdale Plant #24.

Fatalities: 0
Total incidents: 3
Years on record: 2003–2020
Latest incident: Sep 2020

Compliance record

MSHA citations since 2000

127

citations

significant & substantial

$25,924

proposed penalties

$22,775

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	4,083	0	0.0
2025 Q3	3,795	0	0.0
2025 Q2	4,237	2	472.0
2024 Q3	5,378	0	0.0
2024 Q2	4,924	2	406.2
2024 Q1	4,836	0	0.0
2023 Q4	4,572	1	218.7
2023 Q3	5,212	0	0.0

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

No fatalities recorded at this mine.

Reportable incidents

3 on file

2020 · 1 incident

September 3, 2020 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON

Hanson Aggregates LLC · Fall from machine

Employee attempted to board a 988F Cat loader to add hydraulic oil. The strap holding the first step broke causing a fall of approximately two feet. The employee landed on EE's feet but the fall exacerbated a condition of a calcium deposit on EE's right heel. Employee checked at Urgent Care and returned to work with restrictions.

2009 · 1 incident

September 28, 2009 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator FALLING/SLIDING/ROLLING MATERIALS

Hanson Aggregates Arizona, Inc · Struck by falling object

A 4' pry bar fell four feet from a conveyor belt and struck the top of the employee's foot just above where the protection from his steel toed boots ended, causing a fracture.

2003 · 1 incident

April 25, 2003 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS

Hanson Aggregates Arizona, Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS REPLACING TOGGLE PLATE IN JAW CRUSHER, GUIDING PLATE INTO SEAT PLATE, MOVED AND CAUGHT EMPLOYEE'S LEFT THUMB, AND TOOK OFF LEFT THUMB NAIL.