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Portable NDA: 10 MSHA citations Metal/Non-Metal

Controlled by Genoak Materials Inc
Brown City, Lapeer County, MI  ·  Abandoned
MSHA Mine ID: 2002908

Portable NDA has $1K 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
1999–2010
Latest incident
Mar 2010
Compliance record
MSHA citations since 2008
10
citations
1
significant & substantial
$1,093
proposed penalties
$1,093
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Tri-City Aggregates Inc's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
22
inspections on record
215
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: 215 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 NDA has $1K 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.
$1K
proposed penalties
$1K
current assessed
$1K
paid to date
$0
outstanding
10 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2020-04-13.
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.
10.0%
significant & substantial
0.0%
high negligence or reckless
10.0%
reasonably likely or greater
30.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 20.0% low, 80.0% 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: 2019-04-24, 7 years ago
0%
of limit-tested samples over the exposure limit
8
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
  • Unlisted Particulate, respirable, <1% Qtz3
  • Nuisance dust, respirable, <1% Qtz1
Show the individual readings (8)
Date Contaminant Concentration Limit Conc / limit Occupation
2019-04-24 Nuisance dust, respirable, <1% Qtz 0.16 10 0.02 Washer Operator
2019-04-24 Respirable dust, <.1mg 0 Screen/Scalper Operator
2015-04-30 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-04-30 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-05-11 Unlisted Particulate, respirable, <1% Qtz 0.14 Front-end Loader Operator
2010-05-11 Unlisted Particulate, respirable, <1% Qtz 0.31 Front-end Loader Operator
2010-05-11 Unlisted Particulate, respirable, <1% Qtz 0.22 Front-end Loader Operator
2010-05-11 Respirable dust, <.1mg 0 Scale Man
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.

Portable NDA recorded 4.13 reportable injury cases per 100 full-time workers in 2000.

Injury rate, 2000
ⓘ This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
4.13
total case rate
4.13
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 4.77 and the all-US-mining average was 5.64 cases per 100 workers.
In Michigan, metal and nonmetal mining averaged 7.77 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
  1. Construction Materials Inc 1993 to 2001
  2. Tri-City Aggregates Inc 2001 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2022 3
2020 3
2019 4
2018 4
2017 5
2016 7
2015 4
2011 3
2010 5
2009 3
2008 5
2007 6
2006 6
2005 6
2004 6
2003 5
2002 6
2001 9
2000 16
Source: MSHA quarterly employment and production, updated weekly.

Portable NDA sits in Lapeer 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.
Lapeer County, Michigan · Population 88,703
0.1%
Mining share of county employment
$76,228
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
2022 Q4 1,158 0 0 0.0
2022 Q3 2,136 0 0 0.0
2022 Q2 167 0 0 0.0
2020 Q3 640 0 0 0.0
2020 Q2 708 1 0 1412.4
2020 Q1 3 0 0 0.0
2019 Q4 724 0 0 0.0
2019 Q3 2,075 0 0 0.0
Show 60 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2019 Q2 2,101 0 0 0.0
2018 Q4 1,519 0 0 0.0
2018 Q3 1,399 0 0 0.0
2018 Q2 3,449 0 0 0.0
2018 Q1 1,030 0 0 0.0
2017 Q4 1,862 1 0 537.1
2017 Q3 2,240 0 0 0.0
2017 Q2 2,574 0 0 0.0
2017 Q1 3,180 0 0 0.0
2016 Q4 3,320 3 1 903.6
2016 Q3 4,662 0 0 0.0
2016 Q2 3,958 0 0 0.0
2016 Q1 656 0 0 0.0
2015 Q4 239 0 0 0.0
2015 Q3 822 0 0 0.0
2015 Q2 2,266 0 0 0.0
2011 Q2 110 0 0 0.0
2011 Q1 1 0 0 0.0
2010 Q4 1,032 0 0 0.0
2010 Q3 1,945 0 0 0.0
2010 Q2 2,312 2 0 865.1
2010 Q1 1,382 0 0 0.0
2009 Q4 945 0 0 0.0
2009 Q3 541 0 0 0.0
2009 Q2 197 0 0 0.0
2009 Q1 164 0 0 0.0
2008 Q4 537 3 0 5586.6
2008 Q3 1,884 0 0 0.0
2008 Q2 1,309 0 0 0.0
2008 Q1 1 0 0 0.0
2007 Q4 331 0 0 0.0
2007 Q3 849 0 0 0.0
2007 Q2 876 0 0 0.0
2007 Q1 487 0 0 0.0
2006 Q4 1,596 0 0 0.0
2006 Q3 1,610 0 0 0.0
2006 Q2 1,956 0 0 0.0
2006 Q1 1,157 0 0 0.0
2005 Q4 1,506 0 0 0.0
2005 Q3 2,265 0 0 0.0
2005 Q2 2,392 0 0 0.0
2005 Q1 1,641 0 0 0.0
2004 Q4 3,637 0 0 0.0
2004 Q3 4,867 0 0 0.0
2004 Q2 1,896 0 0 0.0
2004 Q1 2,133 0 0 0.0
2003 Q4 2,207 0 0 0.0
2003 Q3 2,266 0 0 0.0
2003 Q2 1,856 0 0 0.0
2003 Q1 78 0 0 0.0
2002 Q4 1,064 0 0 0.0
2002 Q3 1,957 0 0 0.0
2002 Q2 851 0 0 0.0
2002 Q1 49 0 0 0.0
2001 Q4 457 0 0 0.0
2001 Q3 141 0 0 0.0
2000 Q4 9,088 0 0 0.0
2000 Q3 17,403 0 0 0.0
2000 Q2 15,803 0 0 0.0
2000 Q1 6,092 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

4 on file

2010 · 1 incident

March 9, 2010 MI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Tri-City Aggregates Inc · Over-exertion (Not Elsewhere Classified)

Left knee twisted when foot slipped on top of battery box during maintenance inspection.

2000 · 1 incident

June 27, 2000 MI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Construction Materials Inc · Struck by... (Not Elsewhere Classified)

INSTALLING NEW BELT ON NEW CONVEYER INSTALLATION. WAS PULLING BELT OFF ROLL ONTO CONVEYER WITH NYLON ROPE AND LOADER. PLATE PULLED FREE OF BELT, STRUCK INJURED IN FACE, RESULTING IN CONTUSIONS AND FRACTURED C-4 VERTEBRA.

1999 · 2 incidents

December 9, 1999 MI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Construction Materials Inc · Caught in, under or between (Not Elsewhere Classified)

WORKER CLIMBED INTO FIELD HOPPER FEEDING 620 CONVEYER. LOADER OPERATOR WAS UNAWARE OF HIS PRESENCE IN HOPPER AND DUMPED MATERIAL INTO HOPPER. WORKER WAS ABLE TO GET OUT OF HOPPER WITHIN MIN UTES THROUGH DISCHARGE CHUTE.

December 9, 1999 MI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman ENTRAPMENT
Construction Materials Inc · Caught in, under or between (Not Elsewhere Classified)

WORKER CLIMBED INTO FIELD HOPPER FEEDING 620 CONVEYER LOADER OPERATOR WAS UNAWARE OF HIS SPRESCENCE IN HOPPER & DUMPED MATERIAL INTO HOPPER ENTRAPPING WORKER FOR APPROX 70 MINS.