Mining Incidents

Jammer Lake Pit - Virginia: 1 recorded fatality Metal/Non-Metal

Superior Forrest Aggregates Inc. · Surface
Virginia, St Louis County, MN  ·  Intermittent
MSHA Mine ID: 2100880

Jammer Lake Pit - Virginia has $15K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
1
Total incidents
6
Years on record
1991–2006
Latest incident
Nov 2006
Compliance record
MSHA citations since 2001
66
citations
22
significant & substantial
$14,788
proposed penalties
$14,788
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
43
inspections on record
362
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: 362 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Jammer Lake Pit - Virginia has $15K 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.
$15K
proposed penalties
$15K
current assessed
$15K
paid to date
$0
outstanding
64 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-10-02.
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.
34.4%
significant & substantial
0.0%
high negligence or reckless
34.4%
reasonably likely or greater
48.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 25.0% low, 75.0% 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: 2019-07-02, 7 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
2019-07-02 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-10-13 Quartz, respirable, >1% Qtz 0.29 0.96 0.30 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. Concrete Managers Company 1950 to 1980
  2. Seppi Brothers Concrete Products Corp 1980 to 2026
  3. Superior Forrest Aggregates Inc. 2026 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 2
2024 2
2023 2
2022 2
2021 2
2020 2
2019 2
2018 3
2017 3
2016 3
2015 3
2014 3
2013 3
2012 3
2011 3
2010 3
2009 3
2008 4
2007 4
2006 4
2005 4
2004 3
2003 3
2002 3
2001 2
2000 4
Source: MSHA quarterly employment and production, updated weekly.

Jammer Lake Pit - Virginia sits in St. Louis County, Minnesota, where the Census mining category is 2.3% 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.
St. Louis County, Minnesota · Population 200,056
2.3%
Mining share of county employment
$69,455
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 1,085 0 0 0.0
2026 Q1 0 0 0
2025 Q4 1,060 1 0 943.4
2025 Q3 1,457 0 0 0.0
2025 Q2 538 1 0 1858.7
2025 Q1 1 0 0 0.0
2024 Q4 919 0 0 0.0
2024 Q3 1,291 0 0 0.0
Show 97 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 808 0 0 0.0
2024 Q1 8 0 0 0.0
2023 Q4 408 0 0 0.0
2023 Q3 1,020 0 0 0.0
2023 Q2 624 3 0 4807.7
2023 Q1 1 0 0 0.0
2022 Q4 490 0 0 0.0
2022 Q3 1,102 3 1 2722.3
2022 Q2 637 0 0 0.0
2022 Q1 1 0 0 0.0
2021 Q4 754 0 0 0.0
2021 Q3 1,100 4 1 3636.4
2021 Q2 1,009 0 0 0.0
2021 Q1 1 0 0 0.0
2020 Q4 1,042 0 0 0.0
2020 Q3 1,503 0 0 0.0
2020 Q2 848 2 0 2358.5
2020 Q1 1 0 0 0.0
2019 Q4 775 0 0 0.0
2019 Q3 1,370 2 0 1459.9
2019 Q2 1,005 0 0 0.0
2019 Q1 1 0 0 0.0
2018 Q4 1,082 0 0 0.0
2018 Q3 1,959 0 0 0.0
2018 Q2 1,352 0 0 0.0
2018 Q1 41 0 0 0.0
2017 Q4 923 0 0 0.0
2017 Q3 1,876 0 0 0.0
2017 Q2 1,160 0 0 0.0
2017 Q1 8 0 0 0.0
2016 Q4 1,368 2 1 1462.0
2016 Q3 2,118 0 0 0.0
2016 Q2 791 0 0 0.0
2016 Q1 8 0 0 0.0
2015 Q4 1,740 3 1 1724.1
2015 Q3 2,091 0 0 0.0
2015 Q2 1,108 0 0 0.0
2015 Q1 8 0 0 0.0
2014 Q4 1,192 1 0 838.9
2014 Q3 1,366 0 0 0.0
2014 Q2 1,005 0 0 0.0
2014 Q1 8 0 0 0.0
2013 Q4 1,040 2 0 1923.1
2013 Q3 1,527 0 0 0.0
2013 Q2 1,002 0 0 0.0
2013 Q1 8 0 0 0.0
2012 Q4 688 5 2 7267.4
2012 Q3 1,661 9 5 5418.4
2012 Q2 1,435 0 0 0.0
2012 Q1 399 0 0 0.0
2011 Q4 740 0 0 0.0
2011 Q3 1,511 0 0 0.0
2011 Q1 183 0 0 0.0
2010 Q4 1,075 1 0 930.2
2010 Q3 1,500 0 0 0.0
2010 Q2 1,002 0 0 0.0
2010 Q1 161 0 0 0.0
2009 Q4 1,049 6 4 5719.7
2009 Q3 1,850 0 0 0.0
2009 Q2 1,233 0 0 0.0
2009 Q1 1 0 0 0.0
2008 Q4 1,526 0 0 0.0
2008 Q3 1,792 0 0 0.0
2008 Q2 1,656 0 0 0.0
2008 Q1 1 0 0 0.0
2007 Q4 1,092 1 0 915.8
2007 Q3 1,780 0 0 0.0
2007 Q2 2,252 3 0 1332.1
2007 Q1 1 0 0 0.0
2006 Q4 1,082 4 1 3696.9
2006 Q3 1,980 0 0 0.0
2006 Q2 1,863 0 0 0.0
2006 Q1 8 0 0 0.0
2005 Q4 2,052 0 0 0.0
2005 Q3 2,812 0 0 0.0
2005 Q2 1,304 0 0 0.0
2005 Q1 80 0 0 0.0
2004 Q4 1,514 1 1 660.5
2004 Q3 2,370 0 0 0.0
2004 Q2 1,623 0 0 0.0
2004 Q1 84 0 0 0.0
2003 Q4 1,038 0 0 0.0
2003 Q3 2,379 1 0 420.3
2003 Q2 1,706 0 0 0.0
2003 Q1 88 0 0 0.0
2002 Q4 1,427 0 0 0.0
2002 Q3 1,635 0 0 0.0
2002 Q2 1,187 0 0 0.0
2002 Q1 120 0 0 0.0
2001 Q4 824 2 1 2427.2
2001 Q3 1,547 9 4 5817.7
2001 Q2 1,083 0 0 0.0
2001 Q1 80 0 0 0.0
2000 Q4 825 0 0 0.0
2000 Q3 1,534 0 0 0.0
2000 Q2 3,306 0 0 0.0
2000 Q1 495 0 0 0.0

Fatalities at this mine

1 recorded
November 10, 2006 MN · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer Fatality · FALLING/SLIDING/ROLLING MATERIALS
Seppi Brothers Concrete Products Corp · Struck by falling object

Employee was in the process of moving a stacking conveyor, hooking chains to the axle frame to be connected to a loader. Conveyor buckled in half landing on him in his attempt to run from the falling conveyor.

Reportable incidents

5 on file (excluding fatalities above)

2000 · 1 incident

April 4, 2000 MN · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Seppi Brothers Concrete Products Corp · Struck against stationary object

REPLACING BOLT/NUT ON CONVEYOR DURING ROUTINE MAINTENANCE. RATCHET SLIPPED. LITTLE FINGER HIT CONVEYOR LATTICE INJURING FINGER.

1999 · 1 incident

1995 · 2 incidents

August 17, 1995 MN · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Seppi Brothers Concrete Products Corp · Over-exertion (Not Elsewhere Classified)

PULLED MUSCLE IN BACK. SLIPPED WHILE CLEANING PLUGGED ROCK IN JAW CRUSHER HOPPER.

1991 · 1 incident