Mining Incidents

IROCK #5 Metal/Non-Metal

Controlled by Mark Magruder
Lake Ozark, Miller County, MO  ·  Active
MSHA Mine ID: 2302583

IROCK #5 has $2K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
2
Years on record
2024–2026
Latest incident
Jan 2026
Compliance record
MSHA citations since 2024
11
citations
0
significant & substantial
$1,641
proposed penalties
$1,641
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2023
7
inspections on record
98
inspection hours
n/a
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
Rate withheld: 98 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

IROCK #5 has $2K in proposed MSHA penalties and $0 outstanding across 0 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
11 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-01-21.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q4 3,892 0 0 0.0
2025 Q3 3,480 0 0 0.0
2025 Q2 3,583 2 0 558.2
2025 Q1 2,611 2 0 766.0
2024 Q4 3,356 0 0 0.0
2024 Q3 3,120 0 0 0.0
2024 Q2 3,320 2 0 602.4
2024 Q1 2,812 3 0 1066.9
Show 1 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 2,924 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

2 on file

2026 · 1 incident

January 30, 2026 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman DISORDERS (REPEATED TRAUMA)
Magruder Limestone Co · (Not Elsewhere Classified)

Alleged possible noise - Reportable hearing loss

2024 · 1 incident

August 29, 2024 MO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Magruder Limestone Co · Struck by falling object

Fueling the jaw crusher, EE lifted the cover which had a broken strut. While attempting to secure the lid, it fell onto EE's left arm.

For insurers, brokers, and safety consultants

The full compliance file on IROCK #5

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.