Mining Incidents

Portable 1: 1 recorded fatality Metal/Non-Metal

Longview, Wahkiakum County, WA  ·  Intermittent
MSHA Mine ID: 4503806

Portable 1 has $19K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
1
Total incidents
1
Years on record
2020
Latest incident
Aug 2020
Compliance record
MSHA citations since 2020
20
citations
7
significant & substantial
$18,652
proposed penalties
$18,652
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2020
11
inspections on record
334
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: 334 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 $19K in proposed MSHA penalties and $0 outstanding across 0 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
$19K
current assessed
$19K
paid to date
$0
outstanding
19 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-08-13.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
36.8%
significant & substantial
15.8%
high negligence or reckless
36.8%
reasonably likely or greater
42.1%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 21.1% low, 63.2% moderate, 15.8% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2023-09-20
2
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg2
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-09-20 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2023-09-20 Respirable dust, <.1mg 0 Front-end Loader Operator
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Ownership history
  1. Chilton Logging Inc. 2020 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 2
2024 2
2023 2
2022 2
2021 2
2020 3
Source: MSHA quarterly employment and production, updated weekly.

Portable 1 sits in Wahkiakum County, Washington, where the Census mining category is 0.0% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Wahkiakum County, Washington · Population 4,573
0.0%
Mining share of county employment
$57,091
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2026 Q2 466 0 0 0.0
2026 Q1 705 0 0 0.0
2025 Q4 477 0 0 0.0
2025 Q3 698 1 0 1432.7
2025 Q2 1,144 0 0 0.0
2025 Q1 268 0 0 0.0
2024 Q4 316 0 0 0.0
2024 Q3 87 0 0 0.0
Show 16 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 766 0 0 0.0
2024 Q1 711 0 0 0.0
2023 Q4 748 1 0 1336.9
2023 Q3 449 1 0 2227.2
2023 Q2 896 0 0 0.0
2023 Q1 550 0 0 0.0
2022 Q4 793 0 0 0.0
2022 Q3 307 0 0 0.0
2022 Q2 750 0 0 0.0
2022 Q1 477 0 0 0.0
2021 Q4 750 0 0 0.0
2021 Q3 381 0 0 0.0
2021 Q2 231 0 0 0.0
2021 Q1 740 0 0 0.0
2020 Q4 1,214 11 5 9061.0
2020 Q3 540 6 2 11111.1

Fatalities at this mine

1 recorded
August 26, 2020 WA · Metal/Non-Metal outside foreman, leadman Fatality · MACHINERY
Chilton Logging Inc. · Struck by falling object

Miner was in the process of removing wedges on right side of tracked Jaw Feeder. During removal of the last wedge, the panel suddenly fell trapping the miner between the counterweight on excavator and the panel. The weight and force of the panel caused blunt force trauma to the chest and head.