Mining Incidents

Portable Screen All: 5 MSHA citations Metal/Non-Metal

Controlled by Coconino County-Az
Flagstaff, Coconino County, AZ  ·  Intermittent
MSHA Mine ID: 0203278

Portable Screen All has $705 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 2020
5
citations
0
significant & substantial
$705
proposed penalties
$705
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2019
11
inspections on record
102
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: 102 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 Screen All has $705 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.
$705
proposed penalties
$705
current assessed
$705
paid to date
$0
outstanding
5 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-05-05.
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.
0.0%
significant & substantial
20.0%
high negligence or reckless
0.0%
reasonably likely or greater
0.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 80.0% moderate, 20.0% 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: 2026-05-05
5
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
  • Quartz, respirable, >1% Qtz1
Show the individual readings (5)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-05-05 Respirable dust, <.1mg 0 Dry Screen Plant Operator
2020-10-08 Respirable dust, <.1mg 0 Front-end Loader Operator
2020-10-08 Quartz, respirable, >1% Qtz 0.16 Front-end Loader Operator
2019-09-17 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-09-17 Respirable dust, <.1mg 0 Bulldozer 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. Coconino County Public Works Dept. 2011 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 8
2025 3
2024 4
2023 0
2022 7
2021 6
2020 8
2019 4
2018 4
2017 2
2016 5
2015 0
2014 4
2013 4
2012 3
2011 5
Source: MSHA quarterly employment and production, updated weekly.

Portable Screen All sits in Coconino County, Arizona, where the Census mining category is 0.2% 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.
Coconino County, Arizona · Population 144,643
0.2%
Mining share of county employment
$69,748
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 481 2 0 4158.0
2026 Q1 129 0 0 0.0
2025 Q4 518 0 0 0.0
2025 Q3 88 0 0 0.0
2025 Q2 0 0 0
2025 Q1 175 0 0 0.0
2024 Q4 79 0 0 0.0
2024 Q3 0 0 0
Show 52 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 40 1 0 25000.0
2024 Q1 0 0 0
2023 Q4 0 0 0
2023 Q3 0 0 0
2023 Q2 0 0 0
2023 Q1 0 0 0
2022 Q4 0 0 0
2022 Q3 100 0 0 0.0
2022 Q2 401 1 0 2493.8
2022 Q1 192 0 0 0.0
2021 Q4 0 0 0
2021 Q3 120 0 0 0.0
2021 Q2 301 0 0 0.0
2021 Q1 104 0 0 0.0
2020 Q4 88 0 0 0.0
2020 Q3 23 1 0 43478.3
2020 Q2 440 0 0 0.0
2020 Q1 544 0 0 0.0
2019 Q4 613 0 0 0.0
2019 Q3 525 0 0 0.0
2019 Q2 7 0 0 0.0
2019 Q1 406 0 0 0.0
2018 Q4 232 0 0 0.0
2018 Q3 13 0 0 0.0
2018 Q2 0 0 0
2018 Q1 118 0 0 0.0
2017 Q4 0 0 0
2017 Q3 0 0 0
2017 Q2 0 0 0
2017 Q1 40 0 0 0.0
2016 Q4 63 0 0 0.0
2016 Q3 99 0 0 0.0
2016 Q2 88 0 0 0.0
2016 Q1 0 0 0
2015 Q4 0 0 0
2015 Q3 0 0 0
2015 Q2 0 0 0
2015 Q1 0 0 0
2014 Q4 13 0 0 0.0
2014 Q3 0 0 0
2014 Q2 0 0 0
2014 Q1 70 0 0 0.0
2013 Q4 0 0 0
2013 Q3 0 0 0
2013 Q2 46 0 0 0.0
2013 Q1 48 0 0 0.0
2012 Q4 0 0 0
2012 Q3 0 0 0
2012 Q2 100 0 0 0.0
2012 Q1 0 0 0
2011 Q4 68 0 0 0.0
2011 Q3 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.