Portable Plant #5 Metal/Non-Metal
Bjoin Limestone Inc.
· Surface
Controlled by
Kristopher P Bjoin; Shaun M Bjoin; Jonathan M Bjoin
Janesville,
Rock County,
WI
·
Intermittent
MSHA Mine ID: 4703788
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2017
5
citations
1
significant & substantial
$837
proposed penalties
$837
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 | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 384 | 0 | 0 | 0.0 |
| 2025 Q3 | 416 | 0 | 0 | 0.0 |
| 2025 Q2 | 26 | 0 | 0 | 0.0 |
| 2025 Q1 | 938 | 0 | 0 | 0.0 |
| 2024 Q4 | 852 | 0 | 0 | 0.0 |
| 2023 Q2 | 774 | 2 | 1 | 2584.0 |
| 2021 Q1 | 0 | 0 | 0 | |
| 2020 Q3 | 672 | 0 | 0 | 0.0 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.