Mining Incidents

Superior Wash Plant: 28 MSHA citations Metal/Non-Metal

Hancock, MI, Houghton County, MI  ·  Intermittent
MSHA Mine ID: 2001047

Superior Wash 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
4
Years on record
1989–1995
Latest incident
Jun 1995
Compliance record
MSHA citations since 2001
28
citations
2
significant & substantial
$3,326
proposed penalties
$3,326
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
35
inspections on record
257
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: 257 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Superior Wash 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
28 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2023-06-06.
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.
7.1%
significant & substantial
7.1%
high negligence or reckless
7.1%
reasonably likely or greater
39.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 10.7% low, 82.1% moderate, 7.1% 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: 2019-08-06, 7 years ago
2
samples
0
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz1
  • Respirable dust, <.1mg1
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2019-08-06 Quartz, respirable, >1% Qtz 0.17 Washer Operator
2011-06-02 Respirable dust, <.1mg 0 Washer 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. Superior Sand & Gravel Inc 1950 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 2
2024 3
2023 3
2022 2
2021 2
2020 2
2019 1
2018 2
2017 2
2016 2
2015 2
2014 2
2013 2
2012 2
2011 2
2010 1
2009 1
2008 1
2007 1
2006 1
2005 1
2004 1
2003 1
2002 1
2001 1
2000 1
Source: MSHA quarterly employment and production, updated weekly.

Superior Wash Plant sits in Houghton County, Michigan, 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.
Houghton County, Michigan · Population 37,428
0.1%
Mining share of county employment
$56,573
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 180 0 0 0.0
2026 Q1 0 0 0
2025 Q4 318 0 0 0.0
2025 Q3 389 0 0 0.0
2025 Q2 214 0 0 0.0
2025 Q1 0 0 0
2024 Q4 374 0 0 0.0
2024 Q3 367 0 0 0.0
Show 97 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 253 0 0 0.0
2024 Q1 50 0 0 0.0
2023 Q4 275 0 0 0.0
2023 Q3 440 0 0 0.0
2023 Q2 399 7 1 17543.9
2023 Q1 0 0 0
2022 Q4 237 0 0 0.0
2022 Q3 245 0 0 0.0
2022 Q2 356 0 0 0.0
2022 Q1 0 0 0
2021 Q4 160 0 0 0.0
2021 Q3 522 0 0 0.0
2021 Q2 153 3 0 19607.8
2021 Q1 0 0 0
2020 Q4 303 0 0 0.0
2020 Q3 460 2 0 4347.8
2020 Q2 408 0 0 0.0
2020 Q1 0 0 0
2019 Q4 169 0 0 0.0
2019 Q3 517 0 0 0.0
2019 Q2 264 0 0 0.0
2019 Q1 0 0 0
2018 Q4 180 0 0 0.0
2018 Q3 431 1 0 2320.2
2018 Q2 177 0 0 0.0
2018 Q1 0 0 0
2017 Q4 63 0 0 0.0
2017 Q3 251 0 0 0.0
2017 Q2 73 1 0 13698.6
2017 Q1 0 0 0
2016 Q4 168 0 0 0.0
2016 Q3 477 2 0 4192.9
2016 Q2 132 0 0 0.0
2016 Q1 0 0 0
2015 Q4 227 0 0 0.0
2015 Q3 324 0 0 0.0
2015 Q2 332 2 0 6024.1
2015 Q1 0 0 0
2014 Q4 232 0 0 0.0
2014 Q3 211 2 0 9478.7
2014 Q2 207 0 0 0.0
2014 Q1 0 0 0
2013 Q4 272 0 0 0.0
2013 Q3 282 0 0 0.0
2013 Q2 340 1 0 2941.2
2012 Q4 328 0 0 0.0
2012 Q3 546 0 0 0.0
2012 Q2 183 0 0 0.0
2012 Q1 0 0 0
2011 Q4 210 0 0 0.0
2011 Q3 540 0 0 0.0
2011 Q2 410 0 0 0.0
2011 Q1 0 0 0
2010 Q4 176 0 0 0.0
2010 Q3 264 0 0 0.0
2010 Q2 358 0 0 0.0
2010 Q1 0 0 0
2009 Q4 80 0 0 0.0
2009 Q3 259 0 0 0.0
2009 Q2 361 1 1 2770.1
2009 Q1 0 0 0
2008 Q4 161 0 0 0.0
2008 Q3 342 0 0 0.0
2008 Q2 132 0 0 0.0
2008 Q1 0 0 0
2007 Q4 50 0 0 0.0
2007 Q3 293 0 0 0.0
2007 Q2 262 0 0 0.0
2007 Q1 0 0 0
2006 Q4 270 0 0 0.0
2006 Q3 333 0 0 0.0
2006 Q2 288 0 0 0.0
2006 Q1 0 0 0
2005 Q4 320 0 0 0.0
2005 Q3 260 0 0 0.0
2005 Q2 440 0 0 0.0
2005 Q1 0 0 0
2004 Q4 360 0 0 0.0
2004 Q3 390 1 0 2564.1
2004 Q2 400 0 0 0.0
2004 Q1 0 0 0
2003 Q4 154 0 0 0.0
2003 Q3 260 1 0 3846.2
2003 Q2 280 2 0 7142.9
2003 Q1 0 0 0
2002 Q4 140 0 0 0.0
2002 Q3 520 0 0 0.0
2002 Q2 280 0 0 0.0
2002 Q1 0 0 0
2001 Q4 200 0 0 0.0
2001 Q3 240 2 0 8333.3
2001 Q2 400 0 0 0.0
2001 Q1 0 0 0
2000 Q4 90 0 0 0.0
2000 Q3 84 0 0 0.0
2000 Q2 110 0 0 0.0
2000 Q1 0 0 0
No fatalities recorded at this mine.

Reportable incidents

4 on file

1995 · 1 incident

June 8, 1995 MI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Superior Sand & Gravel Inc · Over-exertion in lifting objects

INJURED PERSON WAS LIFTING A SAMPLE BAG FILLED WITH GRAVEL WHEN HE FELT A SHARP PAIN IN HIS BACK.

1990 · 2 incidents

August 2, 1990 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Superior Sand & Gravel Inc · Struck by flying object

WHILE GRINDING METAL, SPARK DEFLECTED OFFSAFETY GLASSES INTO EYE.

June 21, 1990 MI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Superior Sand & Gravel Inc · Struck by... (Not Elsewhere Classified)

WHILE POUNDING A 3 IN METAL WEDGE INTO PLACE ON THE WASH PLANT SCREENING APPARATUS THE WEDGE POPPED OUT AND STRUCK I.NAM ON THE FOREHEAD CAUSING A 3/4 IN LACERATION REQUIRING 5 SUTURES.

1989 · 1 incident

November 16, 1989 MI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Superior Sand & Gravel Inc · Caught in, under or between (Not Elsewhere Classified)

FEEDER BIN WAS BEING REMOVED FROM THE ROCK CRUSHER BY A CRANE. THE BIN BECAME HUNG UP ON THE SCREEN DECK. HEWAS SNT TO FREE IT. AS THE BIN WAS FREED IT TIPPED TO ONE SIDE PINNING HIS RIGHT HAND AGHAINST THE SCREEN DECK.