BRONSON QUARRY has $12K in proposed MSHA penalties and $0 outstanding across 5 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
3
Years on record
2017–2022
Latest incident
Mar 2022
Compliance record
MSHA citations since 2000
86
citations
12
significant & substantial
$11,821
proposed penalties
$11,821
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
68
inspections on record
556
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: 556 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
BRONSON QUARRY has $12K in proposed MSHA penalties and $0 outstanding across 5 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.
$12K
proposed penalties
$12K
current assessed
$12K
paid to date
$0
outstanding
86 assessments are final orders; 5 contested dockets.
Of $672 in penalties contested before the Commission, $534 was upheld in final decisions.
As of the most recent assessment on 2026-05-14.
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.
When citations were contested
ⓘContesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
6citations taken to the federal commission · 7% of citations on record
Settled
4 · 67%
Stood as issued
1 · 17%
Vacated or withdrawn
1 · 17%
25%
S&S designation survived the contest
ⓘCounts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 4 decided S&S contests · industry: 79%
21%
Penalty reduction in decided contests
$672 proposed, $534 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2018-10-11.
Contested penalties
ⓘA reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
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: 2025-02-04
0%
of limit-tested samples over the exposure limit
11
samples
4
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz7
Respirable dust, <.1mg4
Show the individual readings (11)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-02-04
Quartz, respirable, >1% Qtz
0.25
Laborer, Bullgang
2025-02-04
Quartz, respirable, >1% Qtz
0.45
1.64
0.27
Laborer, Bullgang
2023-09-22
Respirable dust, <.1mg
0
Stone Polisher/Cutter
2023-09-22
Respirable dust, <.1mg
0
Stone Polisher/Cutter
2021-09-22
Respirable dust, <.1mg
0
Scraper Operator
2021-09-22
Respirable dust, <.1mg
0
Drill Operator, Rotary
2018-07-31
Quartz, respirable, >1% Qtz
0.43
1.07
0.40
Cutting Mach Operator
2018-07-31
Quartz, respirable, >1% Qtz
0.59
Cutting Mach Helper
2018-07-31
Quartz, respirable, >1% Qtz
0.69
Cutting Mach Operator
2009-06-30
Quartz, respirable, >1% Qtz
0.3
2.47
0.12
Stone Polisher/Cutter
2009-06-30
Quartz, respirable, >1% Qtz
0.29
2.21
0.13
Stone Polisher/Cutter
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
6
2025
7
2024
6
2023
5
2022
4
2021
4
2020
5
2019
4
2018
4
2017
4
2016
3
2015
3
2014
3
2013
3
2012
3
2011
3
2010
3
2009
2
2008
4
2007
4
2006
3
2005
3
2004
2
2003
2
2002
2
2001
2
2000
2
Source: MSHA quarterly employment and production, updated weekly.
BRONSON QUARRY sits in Bourbon County, Kansas, where the Census mining category is 0.6% 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.
Bourbon County, Kansas · Population 14,384
0.6%
Mining share of county employment
$67,555
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
Bandera Stone Inc · Caught in, under or between a moving and a stationary object
Miner suffered swelling and bruising when a stone rolled over crushing EE's left hand between teeth of a hydraulic splitting machine and the stone. Went to doctor, x-rays were negative. No lost time, worked light duty until full work release.
2020 · 1 incident
June 25, 2020KS · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
Miner was walking between work areas approx 25' distance when miner stepped wrong and twisted left ankle. Went to doctor on 7/2/20 and was diagnosed with a strain. Injury only caused pain when kneeling or squatting, neither is a motion required in this miner's job. Was given exercises for physical therapy. No lost time.
2017 · 1 incident
June 26, 2017KS · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
Bandera Stone Inc · Caught in, under or between (Not Elsewhere Classified)
Miner was moving stones, by hand, from a loader bucket to place on a conveyor. A stone shifted and left index finger was smashed between two stones resulting in a broken finger bone.