IROCK #3 Metal/Non-Metal

Magruder Limestone Co · Surface

Controlled by Mark Magruder

Lake Ozark, Lincoln County, MO · Intermittent

MSHA Mine ID: 2302551

Watch this mine

Email me when a new MSHA incident is filed at IROCK #3.

Compliance record

MSHA citations since 2021

citations

significant & substantial

$1,269

proposed penalties

$1,269

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	3,105	0	0.0
2025 Q3	3,664	0	0.0
2025 Q2	2,882	0	0.0
2025 Q1	2,412	0	0.0
2024 Q4	3,181	1	314.4
2024 Q3	3,215	0	0.0
2024 Q2	2,587	0	0.0
2024 Q1	1,157	1	864.3

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

No fatalities recorded at this mine.

1 on file

March 27, 2026 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON

Magruder Limestone Co · Fall from machine

Injured employee reports that EE was climbing down the loader ladder, EE missed the last step and fell onto ground.