PORTABLE GRIZZLY Metal/Non-Metal

C J Moyna & Sons LLC. · Surface

Controlled by John P Moyna

Elkader, Clayton County, IA · Intermittent

MSHA Mine ID: 1302429

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Compliance record

MSHA citations since 2012

citations

significant & substantial

$869

proposed penalties

$869

paid to date

Source: MSHA violations data, updated weekly.

Quarterly safety rates

Citations per million employee-hours, as reported to MSHA

Quarter	Hours worked	Per 1M hrs
2025 Q4	0
2025 Q3	19	0.0
2025 Q2	189	0.0
2025 Q1	553	0.0
2024 Q2	0
2024 Q1	0
2023 Q4	0
2023 Q3	0

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

No fatalities recorded at this mine.

1 on file

April 18, 2017 IA · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor DISORDERS (REPEATED TRAUMA)

C J Moyna & Sons LLC. · (Not Elsewhere Classified)

More the 25 dB shift change. At 45 dB from baseline in 2000. Was notified on 4/18/2017 and rechecked on 5/2/2017.