Mill Creek Quarry has $16K in proposed MSHA penalties and $302 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
3
Years on record
2022–2026
Latest incident
Aug 2026
Compliance record
MSHA citations since 2020
61
citations
16
significant & substantial
$16,007
proposed penalties
$15,705
paid to date
98% of proposed penalties paid to date, a $302 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: 229 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Mill Creek Quarry has $16K in proposed MSHA penalties and $302 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.
$16K
proposed penalties
$16K
current assessed
$16K
paid to date
$302
outstanding
49 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-07-14.
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.
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: 2023-03-14, 3 years ago
7
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg4
Quartz, respirable, >1% Qtz2
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (7)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2023-03-14
Quartz, respirable, >1% Qtz
0.16
Truck Driver
2023-03-14
Quartz, respirable, >1% Qtz
0.31
Utility Man
2023-03-14
Unlisted Particulate, respirable, <1% Qtz
0.19
Front-end Loader Operator
2023-03-14
Respirable dust, <.1mg
0
Rotary Bucket Ex. Operator
2022-04-06
Respirable dust, <.1mg
0
Front-end Loader Operator
2022-04-06
Respirable dust, <.1mg
0
Rotary Bucket Ex. Operator
2022-04-06
Respirable dust, <.1mg
0
Utility Man
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.
Mill Creek Quarry recorded 2.80 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.
2.80
total case rate
0.00
days-away rate
0.000
fatality rate
Above 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 Oklahoma, metal and nonmetal mining averaged 1.92 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 *
2.80
0.00
0.000
2024 *
0.00
0.00
0.000
2023 *
0.00
0.00
0.000
2022 *
8.93
8.93
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
50
2025
35
2024
31
2023
28
2022
13
2021
9
2020
5
Source: MSHA quarterly employment and production, updated weekly.
Mill Creek Quarry sits in Johnston County, Oklahoma, where the Census mining category is 5.7% 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.
Johnston County, Oklahoma · Population 10,334
5.7%
Mining share of county employment
$50,911
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
23,403
0
0
0.0
2026 Q1
19,398
1
0
51.6
2025 Q4
17,988
4
0
222.4
2025 Q3
17,739
7
0
394.6
2025 Q2
17,858
0
0
0.0
2025 Q1
17,805
0
0
0.0
2024 Q4
15,742
12
3
762.3
2024 Q3
16,192
7
1
432.3
Show 17 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
16,708
0
0
0.0
2024 Q1
13,866
3
1
216.4
2023 Q4
14,496
0
0
0.0
2023 Q3
16,213
0
0
0.0
2023 Q2
9,707
0
0
0.0
2023 Q1
11,350
5
2
440.5
2022 Q4
8,176
0
0
0.0
2022 Q3
6,624
0
0
0.0
2022 Q2
4,146
6
1
1447.2
2022 Q1
3,451
0
0
0.0
2021 Q4
3,757
0
0
0.0
2021 Q3
5,309
0
0
0.0
2021 Q2
3,550
0
0
0.0
2021 Q1
3,186
0
0
0.0
2020 Q4
2,959
0
0
0.0
2020 Q3
3,332
1
0
300.1
2020 Q2
1,217
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
3 on file
2026 · 1 incident
August 13, 2026OK · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverSLIP OR FALL OF PERSON
P&K Stone LLC · Over-exertion (Not Elsewhere Classified)
while equipment operator was fueling the haul truck, stepped down with right leg, lost footing, and twisted right ankle. This motion resulted in an ankle twist.
2025 · 1 incident
January 13, 2025OK · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
P&K Stone LLC · Struck by... (Not Elsewhere Classified)
Employee was cutting a tube of grease with utility knife and cut the tip of left thumb.
2022 · 1 incident
December 30, 2022OK · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
P&K Stone LLC · Struck by... (Not Elsewhere Classified)
EE was working to remove a pin from excavator bucket when EE's left hand was struck by hammer handle causing fracture to left hand.