Marion Northside Stone LLC US 441 Mine 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
2
Years on record
1989–2010
Latest incident
Sep 2010
Compliance record
MSHA citations since 2000
31
citations
5
significant & substantial
$3,216
proposed penalties
$3,216
paid to date
100% of proposed penalties paid to date, a $0 gap.
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: 391 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Marion Northside Stone LLC US 441 Mine 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
31 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-20.
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.
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: 2026-03-20
0%
of limit-tested samples over the exposure limit
4
samples
2
limit-tested
Most sampled contaminants
Respirable dust, <.1mg2
Nuisance dust, respirable, <1% Qtz1
Quartz, respirable, >1% Qtz1
Show the individual readings (4)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-03-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2008-12-02
Quartz, respirable, >1% Qtz
0.5
1.69
0.30
Front-end Loader Operator
2008-12-02
Respirable dust, <.1mg
0
Front-end Loader Operator
2008-12-02
Nuisance dust, respirable, <1% Qtz
0.41
10
0.04
Backhoe 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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
3
2025
3
2024
6
2011
4
2010
5
2009
5
2008
4
2007
8
2006
0
2005
2
2004
1
2003
1
2002
2
2001
2
2000
2
Source: MSHA quarterly employment and production, updated weekly.
Marion Northside Stone LLC US 441 Mine sits in Marion County, Florida, 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.
Marion County, Florida · Population 387,697
0.1%
Mining share of county employment
$58,535
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 Q1
556
2
0
3597.1
2025 Q4
1,266
0
0
0.0
2025 Q3
1,456
0
0
0.0
2025 Q2
624
0
0
0.0
2025 Q1
1,551
1
0
644.7
2024 Q4
1,652
0
0
0.0
2024 Q3
1,646
3
0
1822.6
2011 Q1
755
0
0
0.0
Show 41 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2010 Q4
2,419
2
0
826.8
2010 Q3
2,660
0
0
0.0
2010 Q2
3,338
0
0
0.0
2010 Q1
2,515
1
1
397.6
2009 Q4
2,926
0
0
0.0
2009 Q3
2,995
0
0
0.0
2009 Q2
3,128
0
0
0.0
2009 Q1
2,313
0
0
0.0
2008 Q4
2,426
2
0
824.4
2008 Q3
763
0
0
0.0
2008 Q2
1,573
0
0
0.0
2008 Q1
1,888
1
0
529.7
2007 Q4
1,922
0
0
0.0
2007 Q3
7,106
1
0
140.7
2007 Q2
4,880
0
0
0.0
2007 Q1
2,953
1
0
338.6
2006 Q4
0
0
0
2005 Q4
635
2
1
3149.6
2005 Q3
840
0
0
0.0
2005 Q2
670
0
0
0.0
2005 Q1
540
0
0
0.0
2004 Q4
585
0
0
0.0
2004 Q3
308
0
0
0.0
2004 Q2
650
0
0
0.0
2004 Q1
750
0
0
0.0
2003 Q4
635
0
0
0.0
2003 Q3
890
0
0
0.0
2003 Q2
650
1
0
1538.5
2003 Q1
545
0
0
0.0
2002 Q4
586
3
1
5119.5
2002 Q3
635
0
0
0.0
2002 Q2
625
0
0
0.0
2002 Q1
585
0
0
0.0
2001 Q4
585
0
0
0.0
2001 Q3
532
0
0
0.0
2001 Q2
985
0
0
0.0
2001 Q1
910
0
0
0.0
2000 Q4
550
5
2
9090.9
2000 Q3
399
0
0
0.0
2000 Q2
520
0
0
0.0
2000 Q1
2
5
0
2500000.0
No fatalities recorded at this mine.
Reportable incidents
2 on file
2010 · 1 incident
September 20, 2010FL · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverSLIP OR FALL OF PERSON
On 9/20/10 a contract truck driver picking up material for Diamond C. Transport was signing his weight ticket at the ticket window. As he began down the stairs he turned to speak to the scale operator who had already left the window. When he turned to go back to the truck, he twisted his ankle on the steps & fell to the ground. The MSHA # was called & the ambulance was called.