Portable #3 Metal/Non-Metal
MULLINAX INC
· Surface
Controlled by
Nathan Mullinax
SHERIDAN,
Sheridan County,
WY
·
Temporarily Idled
MSHA Mine ID: 4801898
Watch this mine
Email me when a new MSHA incident is filed at Portable #3.
- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2025
1
citations
0
significant & substantial
$151
proposed penalties
$151
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 | 0 | 0 | 0 | |
| 2025 Q3 | 1,112 | 0 | 0 | 0.0 |
| 2025 Q2 | 1,463 | 1 | 0 | 683.5 |
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.