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: 621 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Barnhart Quarry has $23K in proposed MSHA penalties and $1K outstanding across 1 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.
$23K
proposed penalties
$23K
current assessed
$22K
paid to date
$1K
outstanding
109 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2026-07-01.
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.
1citations taken to the federal commission · 1% of citations on record
Still open
1 · 100%
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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2026-04-19.
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: 2026-02-24
0%
of limit-tested samples over the exposure limit
21
samples
11
limit-tested
Most sampled contaminants
Nuisance dust, respirable, <1% Qtz8
Respirable dust, <.1mg8
Quartz, respirable, >1% Qtz5
Show the individual readings (21)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-02-24
Quartz, respirable, >1% Qtz
0.52
Bobcat Operator
2026-02-24
Respirable dust, <.1mg
0
Bobcat Operator
2026-02-24
Quartz, respirable, >1% Qtz
0.3
1.54
0.19
Crusher Oper/Worker
2026-02-24
Quartz, respirable, >1% Qtz
0.15
Truck Driver
2024-02-16
Respirable dust, <.1mg
0
Front-end Loader Operator
2024-02-16
Respirable dust, <.1mg
0
Truck Driver
2024-02-16
Respirable dust, <.1mg
0
Cleanup Man
2023-06-07
Nuisance dust, respirable, <1% Qtz
0.17
10
0.02
Truck Driver
2023-06-07
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-06-07
Nuisance dust, respirable, <1% Qtz
0.47
10
0.05
Utility Man
2021-11-10
Nuisance dust, respirable, <1% Qtz
0.27
10
0.03
Dry Screen Plant Operator
2021-11-10
Respirable dust, <.1mg
0
Truck Driver
2021-11-10
Nuisance dust, respirable, <1% Qtz
0.16
10
0.02
Dry Screen Plant Operator
2019-11-06
Respirable dust, <.1mg
0
Truck Driver
2019-11-06
Nuisance dust, respirable, <1% Qtz
0.65
10
0.07
Truck Driver
2019-11-06
Nuisance dust, respirable, <1% Qtz
0.12
10
0.01
Front-end Loader Operator
2017-07-12
Quartz, respirable, >1% Qtz
0.44
2.21
0.20
Cleanup Man
2016-09-29
Respirable dust, <.1mg
0
Laborer, Bullgang
2016-09-29
Nuisance dust, respirable, <1% Qtz
0.5
10
0.05
Front-end Loader Operator
2016-09-29
Nuisance dust, respirable, <1% Qtz
0.9
10
0.09
Mechanic
2016-09-29
Quartz, respirable, >1% Qtz
0.59
2.58
0.23
Front-end Loader 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.
Barnhart Quarry recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘ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.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Missouri, metal and nonmetal mining averaged 2.13 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.
Year
total case rate
days-away
fatal
2025 *
0.00
0.00
0.000
2024 *
6.14
0.00
0.000
2023 *
0.00
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
6.78
6.78
0.000
2020 *
0.00
0.00
0.000
2019 *
4.37
4.37
0.000
2018 *
4.39
4.39
0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
36
2025
31
2024
29
2023
28
2022
30
2021
28
2020
25
2019
20
2018
19
2017
17
2016
15
2015
11
2014
6
Source: MSHA quarterly employment and production, updated weekly.
Barnhart Quarry sits in Jefferson County, Missouri, where the Census mining category is 0.2% 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.
Jefferson County, Missouri · Population 228,227
0.2%
Mining share of county employment
$80,522
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
18,821
1
0
53.1
2026 Q1
18,994
3
1
157.9
2025 Q4
18,886
0
0
0.0
2025 Q3
17,919
2
0
111.6
2025 Q2
15,332
0
0
0.0
2025 Q1
13,012
2
0
153.7
2024 Q4
16,707
0
0
0.0
2024 Q3
19,232
0
0
0.0
Show 41 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
19,616
6
1
305.9
2024 Q1
9,540
6
0
628.9
2023 Q4
9,029
0
0
0.0
2023 Q3
17,267
0
0
0.0
2023 Q2
15,692
3
0
191.2
2023 Q1
15,119
0
0
0.0
2022 Q4
15,358
13
2
846.5
2022 Q3
15,590
5
0
320.7
2022 Q2
14,868
1
0
67.3
2022 Q1
15,803
0
0
0.0
2021 Q4
15,853
10
5
630.8
2021 Q3
15,749
9
5
571.5
2021 Q2
14,850
0
0
0.0
2021 Q1
12,582
1
1
79.5
2020 Q4
11,706
5
1
427.1
2020 Q3
12,995
0
0
0.0
2020 Q2
14,221
3
0
211.0
2020 Q1
13,287
0
0
0.0
2019 Q4
12,765
4
0
313.4
2019 Q3
12,110
7
0
578.0
2019 Q2
10,877
0
0
0.0
2019 Q1
9,998
0
0
0.0
2018 Q4
11,195
1
1
89.3
2018 Q3
12,338
6
0
486.3
2018 Q2
10,494
0
0
0.0
2018 Q1
11,534
0
0
0.0
2017 Q4
11,681
0
0
0.0
2017 Q3
11,430
6
3
524.9
2017 Q2
10,172
0
0
0.0
2017 Q1
9,271
0
0
0.0
2016 Q4
9,000
0
0
0.0
2016 Q3
10,783
0
0
0.0
2016 Q2
8,108
6
1
740.0
2016 Q1
7,401
0
0
0.0
2015 Q4
7,634
3
0
393.0
2015 Q3
7,356
2
1
271.9
2015 Q2
7,210
0
0
0.0
2015 Q1
4,286
0
0
0.0
2014 Q4
3,875
0
0
0.0
2014 Q3
3,342
0
0
0.0
2014 Q2
2,857
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
9 on file
2026 · 1 incident
March 16, 2026MO · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
The cone crusher stopped working, the employee traveled out of the plant shack to turn off the belts in the plant. Upon returning back to the plant shack they experienced pain in their right knee. On 3.23.26 the employee received an injection in their knee making the injury reportable.
2024 · 2 incidents
September 24, 2024MO · Metal/Non-Metalbarge/boat/dredge/towbarge/towboat/leach operator, riverman, deck handSLIP OR FALL OF PERSON
The employee completed spraying/cleaning underneath the tail end of the sand conveyor, when they lost their footing, causing them to fall down the embankment.
February 27, 2024MO · Metal/Non-Metalbarge/boat/dredge/towbarge/towboat/leach operator, riverman, deck handHANDLING OF MATERIALS
Employee was standing on stationary barge helping to take slack out of a line, to tie off a barge. The tension built causing the line to come off the timber head striking the employee in the left leg near the knee.
2022 · 1 incident
April 22, 2022MO · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
2 employees working, one running skid steer, pulling axle from beneath crusher. Injured person reached beneath axle, and other employee accidentally moved skid steer forward and pinned injured person's hand. Bone between wrist and knuckle on little finder was broken.
Employee getting into water truck, slipped, caught right arm.
2018 · 1 incident
November 20, 2018MO · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Individual sustained fractured left fibula and injured right shoulder after being knocked off a barge into the river. Coworkers state the individual was hit by a cable on the left leg, which knocked EE down into the water between two barges.
2015 · 1 incident
April 30, 2015MO · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY