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Mica Mine and Plant: 20 MSHA citations Metal/Non-Metal

Mica, Spokane County, WA  ·  Intermittent
MSHA Mine ID: 4500247

Mica Mine and Plant has $3K 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
1
Years on record
1983
Latest incident
Nov 1983
Compliance record
MSHA citations since 2007
20
citations
3
significant & substantial
$3,045
proposed penalties
$3,045
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Mutual Materials Company's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
33
inspections on record
360
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: 360 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Mica Mine and Plant has $3K 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.
$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$0
outstanding
20 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-06-24.
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.
15.0%
significant & substantial
0.0%
high negligence or reckless
15.0%
reasonably likely or greater
30.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 100.0% moderate, 0.0% 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: 2013-06-04, 13 years ago
0%
of limit-tested samples over the exposure limit
2
samples
1
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz1
  • Respirable dust, <.1mg1
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2013-06-04 Respirable dust, <.1mg 0 Bulldozer Operator
2013-06-04 Quartz, respirable, >1% Qtz 0.46 1.88 0.24 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. Interpace Corp 1950 to 1991
  2. Mutual Materials Company 1991 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 4
2025 3
2024 4
2023 2
2022 3
2021 3
2020 3
2019 3
2018 3
2017 3
2016 3
2015 3
2014 4
2013 3
2012 3
2011 3
2010 3
2009 3
2008 5
2007 3
2006 3
2005 5
2004 4
2003 4
2002 3
2001 3
2000 2
Source: MSHA quarterly employment and production, updated weekly.

Mica Mine and Plant sits in Spokane County, Washington, 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.
Spokane County, Washington · Population 544,323
0.1%
Mining share of county employment
$73,513
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 2,040 0 0 0.0
2026 Q1 120 0 0 0.0
2025 Q4 60 0 0 0.0
2025 Q3 2,100 0 0 0.0
2025 Q2 5,240 1 0 190.8
2025 Q1 40 0 0 0.0
2024 Q4 80 0 0 0.0
2024 Q3 650 4 0 6153.8
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 700 0 0 0.0
2024 Q1 70 0 0 0.0
2023 Q4 60 0 0 0.0
2023 Q3 450 0 0 0.0
2023 Q2 290 0 0 0.0
2023 Q1 40 0 0 0.0
2022 Q4 40 0 0 0.0
2022 Q3 2,850 0 0 0.0
2022 Q2 140 0 0 0.0
2022 Q1 40 0 0 0.0
2021 Q4 120 0 0 0.0
2021 Q3 410 0 0 0.0
2021 Q2 650 0 0 0.0
2021 Q1 40 0 0 0.0
2020 Q4 87 0 0 0.0
2020 Q3 1,570 0 0 0.0
2020 Q2 475 0 0 0.0
2020 Q1 40 0 0 0.0
2019 Q4 269 0 0 0.0
2019 Q3 1,265 0 0 0.0
2019 Q2 693 1 0 1443.0
2019 Q1 40 0 0 0.0
2018 Q4 485 0 0 0.0
2018 Q3 1,285 0 0 0.0
2018 Q2 720 2 1 2777.8
2018 Q1 40 0 0 0.0
2017 Q4 343 0 0 0.0
2017 Q3 1,418 0 0 0.0
2017 Q2 808 0 0 0.0
2017 Q1 40 0 0 0.0
2016 Q4 302 0 0 0.0
2016 Q3 1,874 0 0 0.0
2016 Q2 692 0 0 0.0
2016 Q1 80 0 0 0.0
2015 Q4 351 0 0 0.0
2015 Q3 1,758 0 0 0.0
2015 Q2 1,048 0 0 0.0
2015 Q1 150 0 0 0.0
2014 Q4 296 0 0 0.0
2014 Q3 1,668 0 0 0.0
2014 Q2 963 0 0 0.0
2014 Q1 394 0 0 0.0
2013 Q4 416 0 0 0.0
2013 Q3 1,429 1 0 699.8
2013 Q2 834 0 0 0.0
2013 Q1 34 0 0 0.0
2012 Q4 432 0 0 0.0
2012 Q3 1,442 0 0 0.0
2012 Q2 487 0 0 0.0
2012 Q1 62 0 0 0.0
2011 Q4 470 0 0 0.0
2011 Q3 1,301 0 0 0.0
2011 Q2 541 0 0 0.0
2011 Q1 15 0 0 0.0
2010 Q4 183 0 0 0.0
2010 Q3 786 0 0 0.0
2010 Q2 506 0 0 0.0
2010 Q1 65 0 0 0.0
2009 Q4 46 0 0 0.0
2009 Q3 988 1 1 1012.1
2009 Q2 445 0 0 0.0
2009 Q1 65 0 0 0.0
2008 Q4 575 0 0 0.0
2008 Q3 1,843 0 0 0.0
2008 Q2 759 0 0 0.0
2008 Q1 133 0 0 0.0
2007 Q4 365 0 0 0.0
2007 Q3 1,463 1 0 683.5
2007 Q2 711 0 0 0.0
2007 Q1 118 0 0 0.0
2006 Q4 315 0 0 0.0
2006 Q3 1,772 0 0 0.0
2006 Q2 727 0 0 0.0
2006 Q1 3 0 0 0.0
2005 Q4 338 0 0 0.0
2005 Q3 1,528 0 0 0.0
2005 Q2 638 0 0 0.0
2005 Q1 50 0 0 0.0
2004 Q4 386 0 0 0.0
2004 Q3 1,448 0 0 0.0
2004 Q2 918 0 0 0.0
2004 Q1 26 0 0 0.0
2003 Q4 314 0 0 0.0
2003 Q3 1,948 0 0 0.0
2003 Q2 703 0 0 0.0
2003 Q1 65 0 0 0.0
2002 Q4 526 0 0 0.0
2002 Q3 2,035 0 0 0.0
2002 Q2 948 0 0 0.0
2002 Q1 145 0 0 0.0
2001 Q4 430 0 0 0.0
2001 Q3 1,887 0 0 0.0
2001 Q2 741 0 0 0.0
2001 Q1 135 0 0 0.0
2000 Q4 375 0 0 0.0
2000 Q3 1,333 0 0 0.0
2000 Q2 865 0 0 0.0
2000 Q1 115 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

1983 · 1 incident

November 12, 1983 WA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POWERED HAULAGE
Interpace Corp · Caught in, under or between a moving and a stationary object

LACERATION ON RT RING FINGER NO PERMANENT IMAPIRMENT EMP WAS USING SHOVEL TO CLEAN IDLER ROLLER IN BELT CONVEYOR TRIPPER BELT CAUGHT SHOVEL AND PULLED SHOVEL AND RT HAND IN BETWEEN BELT AND PU PULLEY BELT WAS RUNNING WAS NOT LOCKED OUT GUARD WAS REMOVED IN ORDER TO CLEAN ROLLER