Portable 4 has $19K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
1
Years on record
1987
Latest incident
Nov 1987
Compliance record
MSHA citations since 2019
47
citations
7
significant & substantial
$18,854
proposed penalties
$13,695
paid to date
73% of proposed penalties paid to date, a $5,159 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2019
11
inspections on record
172
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: 172 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Portable 4 has $19K in proposed MSHA penalties and $0 outstanding across 2 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.
$19K
proposed penalties
$14K
current assessed
$14K
paid to date
$0
outstanding
47 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2026-01-15.
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
4,467
0
0
0.0
2025 Q3
4,550
0
0
0.0
2025 Q2
0
0
0
2025 Q1
2,016
0
0
0.0
2024 Q4
1,814
2
0
1102.5
2024 Q3
2,483
0
0
0.0
2024 Q2
1,074
0
0
0.0
2024 Q1
3,410
0
0
0.0
Show 20 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2023 Q4
3,798
6
1
1579.8
2023 Q3
2,383
0
0
0.0
2023 Q2
3,607
7
2
1940.7
2023 Q1
4,346
5
0
1150.5
2022 Q4
2,872
0
0
0.0
2022 Q3
4,672
5
0
1070.2
2022 Q2
5,128
0
0
0.0
2022 Q1
3,117
4
1
1283.3
2021 Q4
1,623
0
0
0.0
2021 Q3
1,711
0
0
0.0
2021 Q2
2,871
0
0
0.0
2021 Q1
1,811
0
0
0.0
2020 Q4
3,066
11
3
3587.7
2020 Q3
4,637
1
0
215.7
2020 Q2
0
0
0
2020 Q1
3,357
0
0
0.0
2019 Q4
3,036
0
0
0.0
2019 Q3
0
0
0
2019 Q2
2,497
0
0
0.0
2019 Q1
4,345
3
0
690.4
No fatalities recorded at this mine.
Reportable incidents
1 on file
1987 · 1 incident
November 3, 1987WA · Metal/Non-Metalcleanup man, cleanup workerMACHINERY
EMPLOYEE WAS CL3MBING OVER FRAME-FOOT SLIPPED CAUSING HAND TO BE CAUGHT IN FLY WHEEL WHICH WAS COASTING TO A STOP LEFT ARM BECAME ENTANGLED IN FLY WHEEL LEFT ARM & HAND RECEIVED BROKEN BONES F RONT TEETH KNOC5ED OUT HEAD LACERATION
For insurers, brokers, and safety consultants
The full compliance file on Portable 4
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.