Mining Incidents

Agate Quarry: 12 MSHA citations Metal/Non-Metal

Ortonville, Big Stone County, MN  ·  Intermittent
MSHA Mine ID: 2100013

Agate Quarry 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
7
Years on record
1983–2005
Latest incident
May 2005
Compliance record
MSHA citations since 2001
12
citations
4
significant & substantial
$1,314
proposed penalties
$1,314
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
24
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.

Agate Quarry 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
12 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-11-13.
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.
33.3%
significant & substantial
0.0%
high negligence or reckless
41.7%
reasonably likely or greater
58.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 8.3% low, 91.7% 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: 2021-02-10, 5 years ago
0%
of limit-tested samples over the exposure limit
12
samples
6
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz6
  • Respirable dust, <.1mg6
Show the individual readings (12)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-02-10 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2021-02-10 Respirable dust, <.1mg 0 Drill Operator, Rotary
2011-08-04 Quartz, respirable, >1% Qtz 0.23 0.54 0.43 Drill Operator, Rotary Air
2011-08-04 Quartz, respirable, >1% Qtz 0.25 0.77 0.32 Jackhammer Operator
2011-08-04 Respirable dust, <.1mg 0 Supervisor, Co. Official
2008-04-16 Respirable dust, <.1mg 0 Drill Operator, Rotary Air
2008-04-16 Quartz, respirable, >1% Qtz 0.16 0.51 0.31 Drill Operator, Rotary Air
2008-04-16 Quartz, respirable, >1% Qtz 0.12 0.85 0.14 Drill Operator, Rotary Air
2005-04-05 Quartz, respirable, >1% Qtz 0.12 1.48 0.08 Front-end Loader Operator
2005-04-05 Quartz, respirable, >1% Qtz 0.13 1.22 0.11 Supervisor, Co. Official
2005-04-05 Respirable dust, <.1mg 0 Drill Operator, Rotary Air
2005-04-05 Respirable dust, <.1mg 0 Drill Operator, Rotary Air
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. Cold Spring Granite Company 1950 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 0
2025 0
2024 4
2021 2
2019 1
2017 0
2016 0
2015 0
2014 0
2013 1
2012 5
2011 5
2010 1
2009 1
2008 2
2007 5
2006 1
2005 2
2004 9
2003 9
2002 4
2001 10
2000 6
Source: MSHA quarterly employment and production, updated weekly.

Agate Quarry sits in Big Stone County, Minnesota, where the Census mining category is 1.4% 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.
Big Stone County, Minnesota · Population 5,152
1.4%
Mining share of county employment
$65,475
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 0 0 0
2026 Q1 0 0 0
2025 Q4 0 0 0
2025 Q3 0 0 0
2025 Q2 0 0 0
2025 Q1 0 0 0
2024 Q4 1,641 1 0 609.4
2021 Q4 0 0 0
Show 72 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2021 Q3 0 0 0
2021 Q2 570 0 0 0.0
2021 Q1 1,285 0 0 0.0
2019 Q3 17 0 0 0.0
2017 Q4 0 0 0
2017 Q3 3 0 0 0.0
2017 Q1 0 0 0
2016 Q4 0 0 0
2016 Q3 0 0 0
2016 Q2 0 0 0
2016 Q1 0 0 0
2015 Q4 0 0 0
2015 Q3 0 0 0
2015 Q2 0 0 0
2015 Q1 0 0 0
2014 Q4 0 0 0
2014 Q3 39 0 0 0.0
2014 Q2 0 0 0
2014 Q1 0 0 0
2013 Q4 8 0 0 0.0
2013 Q3 26 0 0 0.0
2013 Q2 11 0 0 0.0
2013 Q1 3 0 0 0.0
2012 Q4 19 0 0 0.0
2012 Q3 1,083 0 0 0.0
2012 Q2 3,044 0 0 0.0
2012 Q1 3,600 0 0 0.0
2011 Q4 3,324 0 0 0.0
2011 Q3 2,090 1 0 478.5
2011 Q2 18 0 0 0.0
2011 Q1 3 0 0 0.0
2010 Q4 12 0 0 0.0
2010 Q3 0 0 0
2010 Q2 4 0 0 0.0
2010 Q1 4 0 0 0.0
2009 Q4 51 0 0 0.0
2009 Q3 4 0 0 0.0
2009 Q2 0 0 0
2008 Q4 0 0 0
2008 Q3 0 0 0
2008 Q2 1,986 4 3 2014.1
2008 Q1 50 0 0 0.0
2007 Q4 9 0 0 0.0
2007 Q2 3,834 0 0 0.0
2007 Q1 1,799 0 0 0.0
2006 Q4 89 0 0 0.0
2006 Q2 0 0 0
2006 Q1 2 0 0 0.0
2005 Q4 8 0 0 0.0
2005 Q3 14 0 0 0.0
2005 Q2 2,239 4 1 1786.5
2005 Q1 606 0 0 0.0
2004 Q4 200 0 0 0.0
2004 Q3 1,144 0 0 0.0
2004 Q2 1,362 0 0 0.0
2004 Q1 0 0 0
2003 Q4 0 0 0
2003 Q3 32 0 0 0.0
2003 Q2 2,716 0 0 0.0
2003 Q1 1,103 0 0 0.0
2002 Q4 0 0 0
2002 Q3 91 0 0 0.0
2002 Q2 1,995 0 0 0.0
2002 Q1 69 0 0 0.0
2001 Q4 1,334 0 0 0.0
2001 Q3 1,291 0 0 0.0
2001 Q2 953 1 0 1049.3
2001 Q1 0 0 0
2000 Q4 721 0 0 0.0
2000 Q3 0 0 0
2000 Q2 2,887 0 0 0.0
2000 Q1 410 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

7 on file

2005 · 1 incident

May 10, 2005 MN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Cold Spring Granite Company · Struck against a moving object

Employee was at work running loader, felt pain in lower back. Employee normally works at another quarry, was assigned to this quarry temporarily. With this low back strain, he has treated with chiropractor three times so far.

2000 · 1 incident

May 11, 2000 MN · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cold Spring Granite Company · Over-exertion in lifting objects

EMPLOYEE WAS LIFTING DRIVE SHAFT INTO PLACE AND FELT A PULL/PAIN IN LOWER BACK. HE DIDN'T SEE ADOCTOR UNTIL 5/17/2000.

1994 · 1 incident

January 10, 1994 MN · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cold Spring Granite Company · Over-exertion in pulling or pushing objects

EMPLOYEE WAS HELPING PULL CHAINS AND HOOKS OUT OF SNOW AND HOOKING ONTO DERRICK BLOCK. FELT PAIN AND STIFFNESS IN LOWER BACK.

1991 · 1 incident

April 1, 1991 MN · Metal/Non-Metal fireman - locomotive, railroad clam operator, timekeeper, yard engine operator MACHINERY
Cold Spring Granite Company · Fall to the walkway or working surface

EE WAS DRILLING ON A STONE AND THE STEEL WENT THRU THE BOTTOM OF THE STONE AND THE EE FELL ON HIS RIGHT SIDE BRUISING HIS RIGHT SIDE RIB AREA AND LEFT WRIST SPRAIN.

1983 · 3 incidents

May 10, 1983 MN · Metal/Non-Metal dryer operator, kiln operator, dry plant operator, fluid operator, bed dryer operator MACHINERY
Cold Spring Granite Company · Contact with hot objects or substances

LIGHTNING BURNER MACHINE,OXYGEN LINE CAME LOOSE,BURNED ARM.

February 21, 1983 MN · Metal/Non-Metal ledgeman/hand, quarry man MACHINERY
Cold Spring Granite Company · Caught in, under or between a moving and a stationary object

WAS DRILLING WITH JACKHAMMER, DRILL JUMPED ONTO TOES.