Mining Incidents

Portable # 1: 39 MSHA citations Metal/Non-Metal

Clifford Keith Grading · Surface
Controlled by Clifford L Keith
Cave Junction, Josephine County, OR  ·  Intermittent
MSHA Mine ID: 3503763

Portable # 1 has $6K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2012
39
citations
6
significant & substantial
$5,769
proposed penalties
$5,769
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2012
25
inspections on record
299
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: 299 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 $6K 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.
$6K
proposed penalties
$6K
current assessed
$6K
paid to date
$0
outstanding
40 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-11-20.
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.
15.4%
significant & substantial
20.5%
high negligence or reckless
15.4%
reasonably likely or greater
56.4%
permanently disabling or fatal if injury occurs
Negligence coding: 2.6% none, 15.4% low, 61.5% moderate, 20.5% 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: 2025-08-26
2
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg2
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-08-26 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-04-17 Respirable dust, <.1mg 0 Backhoe 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. Clifford Keith Grading 2011 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 1
2025 1
2024 1
2023 1
2022 1
2021 1
2020 1
2019 1
2018 1
2017 1
2016 1
2015 1
2014 1
2013 1
2012 2
Source: MSHA quarterly employment and production, updated weekly.

Portable # 1 sits in Josephine County, Oregon, where the Census mining category is 0.1% 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.
Josephine County, Oregon · Population 88,069
0.1%
Mining share of county employment
$59,097
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 Q1 59 0 0 0.0
2025 Q4 108 2 0 18518.5
2025 Q3 86 0 0 0.0
2025 Q2 83 1 0 12048.2
2025 Q1 118 0 0 0.0
2024 Q4 113 0 0 0.0
2024 Q3 118 0 0 0.0
2024 Q2 89 0 0 0.0
Show 45 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q1 115 0 0 0.0
2023 Q4 90 2 0 22222.2
2023 Q3 116 0 0 0.0
2023 Q2 97 1 0 10309.3
2023 Q1 100 0 0 0.0
2022 Q4 104 0 0 0.0
2022 Q3 58 0 0 0.0
2022 Q2 21 0 0 0.0
2022 Q1 116 1 0 8620.7
2021 Q4 82 0 0 0.0
2021 Q3 41 0 0 0.0
2021 Q1 109 0 0 0.0
2020 Q4 70 0 0 0.0
2020 Q3 24 0 0 0.0
2020 Q2 67 1 0 14925.4
2020 Q1 26 0 0 0.0
2019 Q4 56 0 0 0.0
2019 Q3 101 0 0 0.0
2019 Q2 68 10 3 147058.8
2019 Q1 22 0 0 0.0
2018 Q3 31 0 0 0.0
2018 Q2 104 0 0 0.0
2018 Q1 118 0 0 0.0
2017 Q4 116 2 0 17241.4
2017 Q3 108 2 0 18518.5
2017 Q2 108 0 0 0.0
2017 Q1 68 0 0 0.0
2016 Q4 102 1 0 9803.9
2016 Q3 109 0 0 0.0
2016 Q2 98 4 2 40816.3
2016 Q1 78 0 0 0.0
2015 Q4 79 0 0 0.0
2015 Q3 32 0 0 0.0
2015 Q2 43 0 0 0.0
2014 Q4 22 3 1 136363.6
2014 Q3 122 0 0 0.0
2014 Q2 89 0 0 0.0
2014 Q1 166 2 0 12048.2
2013 Q4 191 0 0 0.0
2013 Q3 106 0 0 0.0
2013 Q2 250 0 0 0.0
2013 Q1 292 0 0 0.0
2012 Q4 358 0 0 0.0
2012 Q3 199 0 0 0.0
2012 Q2 63 3 0 47619.0

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.