Portable #1 Metal/Non-Metal
Kern Brothers Trucking Inc
· Surface
Controlled by
Jerry T Kern
Arvin,
Kern County,
CA
·
Intermittent
MSHA Mine ID: 0405604
Portable #1 has $9K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at Portable #1.
- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2005
27
citations
7
significant & substantial
$9,248
proposed penalties
$8,174
paid to date
88% of proposed penalties paid to date, a $1,074 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2004
15
inspections on record
189
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: 189 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 #1 has $9K in proposed MSHA penalties and $0 outstanding across 1 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.$9K
proposed penalties
$8K
current assessed
$8K
paid to date
$0
outstanding
25 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2024-09-04.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
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 | 49 | 0 | 0 | 0.0 |
| 2025 Q3 | 67 | 0 | 0 | 0.0 |
| 2025 Q2 | 56 | 0 | 0 | 0.0 |
| 2025 Q1 | 84 | 0 | 0 | 0.0 |
| 2024 Q4 | 46 | 0 | 0 | 0.0 |
| 2024 Q3 | 31 | 2 | 0 | 64516.1 |
| 2024 Q2 | 45 | 0 | 0 | 0.0 |
| 2024 Q1 | 47 | 0 | 0 | 0.0 |
Show 24 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 33 | 0 | 0 | 0.0 |
| 2022 Q1 | 37 | 0 | 0 | 0.0 |
| 2021 Q4 | 63 | 1 | 0 | 15873.0 |
| 2021 Q3 | 53 | 0 | 0 | 0.0 |
| 2021 Q1 | 111 | 1 | 0 | 9009.0 |
| 2020 Q4 | 71 | 0 | 0 | 0.0 |
| 2020 Q2 | 87 | 0 | 0 | 0.0 |
| 2020 Q1 | 56 | 0 | 0 | 0.0 |
| 2019 Q2 | 64 | 0 | 0 | 0.0 |
| 2019 Q1 | 93 | 0 | 0 | 0.0 |
| 2018 Q4 | 212 | 0 | 0 | 0.0 |
| 2018 Q3 | 267 | 0 | 0 | 0.0 |
| 2018 Q2 | 192 | 0 | 0 | 0.0 |
| 2018 Q1 | 60 | 0 | 0 | 0.0 |
| 2017 Q4 | 56 | 0 | 0 | 0.0 |
| 2017 Q2 | 34 | 0 | 0 | 0.0 |
| 2011 Q1 | 131 | 0 | 0 | 0.0 |
| 2010 Q4 | 378 | 0 | 0 | 0.0 |
| 2010 Q3 | 402 | 0 | 0 | 0.0 |
| 2010 Q2 | 247 | 13 | 6 | 52631.6 |
| 2005 Q2 | 16 | 0 | 0 | 0.0 |
| 2005 Q1 | 0 | 1 | 0 | |
| 2004 Q4 | 0 | 0 | 0 | |
| 2004 Q3 | 146 | 0 | 0 | 0.0 |
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.
For insurers, brokers, and safety consultants
The full compliance file on Portable #1
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.