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M52 PIT: 62 MSHA citations Metal/Non-Metal

Controlled by Mark Constine
Owasso, Shiawassee County, MI  ·  Intermittent
MSHA Mine ID: 2003079

M52 PIT has $7K 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
2
Years on record
2005
Latest incident
May 2005
Compliance record
MSHA citations since 2000
62
citations
13
significant & substantial
$6,693
proposed penalties
$6,693
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Constine Gravel Company's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
52
inspections on record
515
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: 515 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

M52 PIT has $7K 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.
$7K
proposed penalties
$7K
current assessed
$7K
paid to date
$0
outstanding
57 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-06-11.
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.
21.3%
significant & substantial
9.8%
high negligence or reckless
23.0%
reasonably likely or greater
42.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 9.8% low, 80.3% moderate, 8.2% high, 1.6% 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: 2022-09-08, 4 years ago
0%
of limit-tested samples over the exposure limit
10
samples
4
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz5
  • Respirable dust, <.1mg4
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (10)
Date Contaminant Concentration Limit Conc / limit Occupation
2022-09-08 Quartz, respirable, >1% Qtz 0.3 Front-end Loader Operator
2019-10-29 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-09-17 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-09-29 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-09-29 Quartz, respirable, >1% Qtz 0.14 0.75 0.19 Front-end Loader Operator
2011-06-09 Unlisted Particulate, respirable, <1% Qtz 0.18 Front-end Loader Operator
2011-06-09 Quartz, respirable, >1% Qtz 0.19 0.84 0.23 Front-end Loader Operator
2004-08-31 Quartz, respirable, >1% Qtz 0.12 0.71 0.17 Front-end Loader Operator
2003-06-11 Quartz, respirable, >1% Qtz 0.24 1.52 0.16 Front-end Loader Operator
2003-06-11 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. Constine Inc 1998 to 2009
  2. Constine Gravel Company 2009 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 4
2025 4
2024 5
2023 4
2022 3
2021 4
2020 2
2019 4
2018 4
2017 5
2016 5
2015 5
2014 5
2013 5
2012 4
2011 4
2010 6
2009 2
2008 3
2007 4
2006 6
2005 9
2004 5
2003 3
2002 3
2001 3
2000 5
Source: MSHA quarterly employment and production, updated weekly.

M52 PIT sits in Shiawassee 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.
Shiawassee County, Michigan · Population 68,061
0.1%
Mining share of county employment
$64,464
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 1,113 0 0 0.0
2026 Q1 185 0 0 0.0
2025 Q4 839 0 0 0.0
2025 Q3 1,307 0 0 0.0
2025 Q2 705 1 0 1418.4
2025 Q1 140 0 0 0.0
2024 Q4 1,179 0 0 0.0
2024 Q3 943 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 656 0 0 0.0
2024 Q1 555 0 0 0.0
2023 Q4 1,197 1 0 835.4
2023 Q3 455 0 0 0.0
2023 Q2 940 0 0 0.0
2023 Q1 90 0 0 0.0
2022 Q3 762 0 0 0.0
2022 Q2 627 0 0 0.0
2022 Q1 215 0 0 0.0
2021 Q4 849 0 0 0.0
2021 Q3 950 0 0 0.0
2021 Q2 871 0 0 0.0
2021 Q1 180 0 0 0.0
2020 Q4 530 0 0 0.0
2020 Q3 639 0 0 0.0
2020 Q2 805 0 0 0.0
2020 Q1 135 0 0 0.0
2019 Q4 786 1 0 1272.3
2019 Q2 1,013 0 0 0.0
2019 Q1 525 0 0 0.0
2018 Q4 1,815 0 0 0.0
2018 Q3 1,941 0 0 0.0
2018 Q2 1,065 0 0 0.0
2018 Q1 64 2 1 31250.0
2017 Q4 2,084 0 0 0.0
2017 Q3 2,310 5 3 2164.5
2017 Q2 2,130 0 0 0.0
2017 Q1 72 0 0 0.0
2016 Q4 1,471 0 0 0.0
2016 Q3 2,194 0 0 0.0
2016 Q2 3,390 0 0 0.0
2016 Q1 195 0 0 0.0
2015 Q4 1,303 3 0 2302.4
2015 Q3 2,164 1 0 462.1
2015 Q2 1,792 0 0 0.0
2015 Q1 143 0 0 0.0
2014 Q4 1,725 0 0 0.0
2014 Q3 1,982 1 1 504.5
2014 Q2 710 0 0 0.0
2014 Q1 156 0 0 0.0
2013 Q4 1,774 0 0 0.0
2013 Q3 2,407 5 0 2077.3
2013 Q2 900 0 0 0.0
2013 Q1 150 0 0 0.0
2012 Q4 1,502 0 0 0.0
2012 Q3 692 5 3 7225.4
2012 Q2 1,028 0 0 0.0
2012 Q1 361 0 0 0.0
2011 Q4 1,218 0 0 0.0
2011 Q3 1,799 1 0 555.9
2011 Q2 723 2 0 2766.3
2011 Q1 120 0 0 0.0
2010 Q4 2,537 0 0 0.0
2010 Q3 3,012 2 0 664.0
2010 Q2 2,552 0 0 0.0
2010 Q1 316 0 0 0.0
2009 Q4 574 0 0 0.0
2009 Q3 20 4 0 200000.0
2009 Q2 557 0 0 0.0
2009 Q1 13 0 0 0.0
2008 Q4 393 0 0 0.0
2008 Q3 439 0 0 0.0
2008 Q2 1,213 2 0 1648.8
2008 Q1 0 0 0
2007 Q4 637 2 0 3139.7
2007 Q3 2,132 5 2 2345.2
2007 Q2 2,216 0 0 0.0
2007 Q1 486 0 0 0.0
2006 Q4 609 0 0 0.0
2006 Q3 2,662 0 0 0.0
2006 Q2 2,378 0 0 0.0
2006 Q1 1,848 0 0 0.0
2005 Q4 3,381 0 0 0.0
2005 Q3 3,637 1 0 275.0
2005 Q2 2,981 8 2 2683.7
2005 Q1 2,154 0 0 0.0
2004 Q4 3,015 0 0 0.0
2004 Q3 3,019 4 1 1324.9
2004 Q2 2,886 0 0 0.0
2004 Q1 970 0 0 0.0
2003 Q4 517 0 0 0.0
2003 Q3 891 0 0 0.0
2003 Q2 1,303 0 0 0.0
2003 Q1 497 0 0 0.0
2002 Q4 1,314 0 0 0.0
2002 Q3 1,085 1 0 921.7
2002 Q2 1,250 0 0 0.0
2002 Q1 803 0 0 0.0
2001 Q4 937 0 0 0.0
2001 Q3 1,527 0 0 0.0
2001 Q2 20 0 0 0.0
2001 Q1 1,227 0 0 0.0
2000 Q4 1,657 0 0 0.0
2000 Q3 2,232 0 0 0.0
2000 Q2 2,195 5 0 2277.9
2000 Q1 1,546 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

2 on file

2005 · 2 incidents

May 21, 2005 MI · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger IGNITION OR EXPLOSION OF GAS OR DUST
Constine Inc · Contact with hot objects or substances

Taking an acetylene regulator off of a full tank while smoking when ignition occured.

May 20, 2005 MI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Constine Inc · Struck against a moving object

Pin worked its way out - operator did not notice it. It stuck in ground and stopped machine.