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Liberty Aggregates LLC: 227 MSHA citations Metal/Non-Metal

Liberty Aggregates LLC · Underground
Liberty, Clay County, MO  ·  Active
MSHA Mine ID: 2302513

Liberty Aggregates LLC has $124K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
2
Years on record
2018–2019
Latest incident
Dec 2019
Compliance record
MSHA citations since 2017
227
citations
56
significant & substantial
$123,762
proposed penalties
$121,361
paid to date
98% of proposed penalties paid to date, a $2,401 gap.
Source: MSHA violations data, updated weekly.
See Liberty Aggregates LLC's full MSHA compliance history →
Inspection activity
MSHA inspections since 2017
78
inspections on record
1,598
inspection hours
14.2
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.
227 citations across 1,598 inspection hours.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘ A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2022-05-17.
On record since 2022.
Source: MSHA imminent-danger order records, updated weekly.

Liberty Aggregates LLC has $124K in proposed MSHA penalties and $0 outstanding across 2 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.
$124K
proposed penalties
$121K
current assessed
$121K
paid to date
$0
outstanding
219 assessments are final orders; 2 contested dockets.
Of $13K in penalties contested before the Commission, $11K was upheld in final decisions.
As of the most recent assessment on 2026-05-07.
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.
24.9%
significant & substantial
9.3%
high negligence or reckless
24.9%
reasonably likely or greater
60.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 16.0% low, 74.7% moderate, 9.3% high, 0.0% reckless.
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.
7 citations taken to the federal commission · 3% of citations on record
  • Settled 7 · 100%
100%
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 1 decided S&S contests · industry: 79%
18%
Penalty reduction in decided contests
$13K proposed, $11K 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 2022-08-24.
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.
Docket Decision Judge Year Proposed / upheld
CENT 2022-0145 Settlement 2023 $13K → $10K
CENT 2018-0470 Settlement Lesnick 2019 $354 → $354
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2026-05-07
11%
of limit-tested samples over the exposure limit
84
samples
80
limit-tested
Most sampled contaminants
  • Nuisance dust, total, <1% Qtz195 over
  • Diesel particulate (total carbon)473 over
  • Quartz, respirable, >1% Qtz121 over
  • Nuisance dust, respirable, <1% Qtz4
Show the individual readings (100)
Date Contaminant Concentration Limit Conc / limit Occupation
2020-08-26 Nuisance dust, total, <1% Qtz 14.74 10 1.47 Blaster, Powder Gang
2019-07-10 TC @ 160 209 160 1.31 Scaling (mechanical)
2019-07-10 TC from EC @ 160 203 160 1.27 Scaling (mechanical)
2019-04-17 TC @ 160 197 160 1.23 Truck Driver
2019-04-17 TC @ 160 576 160 3.60 Scaling (mechanical)
2019-04-17 Nuisance dust, total, <1% Qtz 13.54 10 1.35 Crusher Oper/Worker
2019-04-17 Nuisance dust, total, <1% Qtz 16.83 10 1.68 Blaster, Powder Gang
2019-04-17 EC @ 160 454 160 2.84 Scaling (mechanical)
2019-01-16 Nuisance dust, total, <1% Qtz 12.72 10 1.27 Blaster, Powder Gang
2018-11-15 Nuisance dust, total, <1% Qtz 26.09 10 2.61 Blaster, Powder Gang
2018-07-25 Quartz, respirable, >1% Qtz 1.53 1.45 1.06 Blaster, Powder Gang
2026-05-07 Nuisance dust, total, <1% Qtz 0.29 10 0.03 Front-end Loader Operator
2026-05-07 Nuisance dust, total, <1% Qtz 1.48 10 0.15 Jackhammer Operator
2026-05-07 Nuisance dust, total, <1% Qtz 5.45 10 0.55 Crusher Oper/Worker
2026-05-07 Nuisance dust, total, <1% Qtz 4.68 10 0.47 Truck Driver
2026-05-07 Nuisance dust, total, <1% Qtz 0.55 10 0.06 Dry Screen Plant Operator
2025-08-05 TC @ 160 0 160 0.00 Front-end Loader Operator
2025-08-05 EC @ 160 0 160 0.00 Front-end Loader Operator
2025-08-05 TC from EC @ 160 0 160 0.00 Front-end Loader Operator
2025-08-05 ORGANIC CARBON 0 Truck Driver
2025-08-05 TC @ 160 0 160 0.00 Truck Driver
2025-08-05 EC @ 160 0 160 0.00 Truck Driver
2025-08-05 TC from EC @ 160 0 160 0.00 Truck Driver
2025-08-05 ORGANIC CARBON 0 Front-end Loader Operator
2024-11-06 Respirable dust, <.1mg 0 Scoop-Tram Operator
2024-11-06 Quartz, respirable, >1% Qtz 0.32 1.7 0.19 Crusher Oper/Worker
2024-11-06 Quartz, respirable, >1% Qtz 0.28 Utility Man
2024-01-04 Quartz, respirable, >1% Qtz 0.2 Drill Operator, Jumbo Perc.
2024-01-04 Nuisance dust, respirable, <1% Qtz 0.13 10 0.01 Truck Driver
2024-01-04 Quartz, respirable, >1% Qtz 0.61 2.17 0.28 Blaster, Powder Gang
2024-01-04 Quartz, respirable, >1% Qtz 0.43 1.54 0.28 Scaling (mechanical)
2024-01-04 Nuisance dust, respirable, <1% Qtz 4.36 10 0.44 Cleanup Man
2023-11-02 TC @ 160 0 160 0.00 Truck Driver
2023-11-02 EC @ 160 0 160 0.00 Truck Driver
2023-11-02 TC from EC @ 160 0 160 0.00 Truck Driver
2023-11-02 ORGANIC CARBON 0 Backhoe Operator
2023-11-02 TC @ 160 0 160 0.00 Backhoe Operator
2023-11-02 EC @ 160 0 160 0.00 Backhoe Operator
2023-11-02 TC from EC @ 160 0 160 0.00 Backhoe Operator
2023-11-02 EC @ 160 0 160 0.00 Front-end Loader Operator
2023-11-02 TC @ 160 0 160 0.00 Front-end Loader Operator
2023-11-02 TC from EC @ 160 0 160 0.00 Front-end Loader Operator
2023-11-02 ORGANIC CARBON 0 Front-end Loader Operator
2023-11-02 ORGANIC CARBON 0 Blaster, Powder Gang
2023-11-02 TC @ 160 0 160 0.00 Blaster, Powder Gang
2023-11-02 EC @ 160 0 160 0.00 Blaster, Powder Gang
2023-11-02 TC from EC @ 160 0 160 0.00 Blaster, Powder Gang
2023-11-02 ORGANIC CARBON 0 Truck Driver
2023-07-20 EC @ 160 0 160 0.00 Scaling (mechanical)
2023-07-20 ORGANIC CARBON 0 Blaster, Powder Gang
2023-07-20 TC @ 160 77 160 0.48 Blaster, Powder Gang
2023-07-20 EC @ 160 47 160 0.29 Blaster, Powder Gang
2023-07-20 TC from EC @ 160 0 160 0.00 Blaster, Powder Gang
2023-07-20 ORGANIC CARBON 0 Front-end Loader Operator
2023-07-20 TC @ 160 0 160 0.00 Front-end Loader Operator
2023-07-20 EC @ 160 0 160 0.00 Front-end Loader Operator
2023-07-20 TC from EC @ 160 0 160 0.00 Front-end Loader Operator
2023-07-20 ORGANIC CARBON 0 Drill Operator, Jumbo Perc.
2023-07-20 TC @ 160 0 160 0.00 Drill Operator, Jumbo Perc.
2023-07-20 EC @ 160 0 160 0.00 Drill Operator, Jumbo Perc.
2023-07-20 TC from EC @ 160 0 160 0.00 Drill Operator, Jumbo Perc.
2023-07-20 ORGANIC CARBON 0 Truck Driver
2023-07-20 TC @ 160 0 160 0.00 Truck Driver
2023-07-20 EC @ 160 0 160 0.00 Truck Driver
2023-07-20 TC from EC @ 160 0 160 0.00 Truck Driver
2023-07-20 ORGANIC CARBON 0 Scaling (mechanical)
2023-07-20 TC @ 160 33 160 0.21 Scaling (mechanical)
2023-07-20 TC from EC @ 160 0 160 0.00 Scaling (mechanical)
2023-07-20 ORGANIC CARBON 0 Truck Driver
2023-07-20 TC @ 160 0 160 0.00 Truck Driver
2023-07-20 EC @ 160 0 160 0.00 Truck Driver
2023-07-20 TC from EC @ 160 0 160 0.00 Truck Driver
2023-07-20 Respirable dust, <.1mg 0 Crusher Oper/Worker
2022-01-27 EC @ 160 0 160 0.00 Scaling (mechanical)
2022-01-27 TC from EC @ 160 0 160 0.00 Scaling (mechanical)
2022-01-27 ORGANIC CARBON 0 Blaster, Powder Gang
2022-01-27 TC @ 160 62 160 0.39 Blaster, Powder Gang
2022-01-27 TC @ 160 0 160 0.00 Scaling (mechanical)
2022-01-27 EC @ 160 34 160 0.21 Blaster, Powder Gang
2022-01-27 TC from EC @ 160 0 160 0.00 Blaster, Powder Gang
2022-01-27 ORGANIC CARBON 0 Blaster, Powder Gang
2022-01-27 ORGANIC CARBON 0 Scaling (mechanical)
2022-01-27 TC @ 160 0 160 0.00 Blaster, Powder Gang
2022-01-27 EC @ 160 0 160 0.00 Blaster, Powder Gang
2022-01-27 TC from EC @ 160 0 160 0.00 Blaster, Powder Gang
2021-03-31 TC @ 160 0 160 0.00 Front-end Loader Operator
2021-03-31 TC @ 160 44 160 0.28 Scaling (mechanical)
2021-03-31 EC @ 160 33 160 0.21 Scaling (mechanical)
2021-03-31 TC from EC @ 160 0 160 0.00 Scaling (mechanical)
2021-03-31 TC @ 160 0 160 0.00 Blaster, Powder Gang
2021-03-31 EC @ 160 0 160 0.00 Blaster, Powder Gang
2021-03-31 TC from EC @ 160 0 160 0.00 Blaster, Powder Gang
2021-03-31 EC @ 160 0 160 0.00 Front-end Loader Operator
2021-03-31 TC from EC @ 160 0 160 0.00 Front-end Loader Operator
2021-03-31 TC @ 160 0 160 0.00 Blaster, Powder Gang
2021-03-31 EC @ 160 0 160 0.00 Blaster, Powder Gang
2021-03-31 TC from EC @ 160 0 160 0.00 Blaster, Powder Gang
2021-02-10 EC @ 160 0 160 0.00 Drill Operator, Rotary
2021-02-10 TC @ 160 0 160 0.00 Drill Operator, Rotary
2021-02-10 TC from EC @ 160 0 160 0.00 Blaster, Powder Gang
Showing 100 of 193 laboratory readings: every over-limit reading, then the most recent. MSHA reads one air sample several times, so readings outnumber the samples counted above. The full set is in MSHA's Personal Health Samples file.

Area samples (mill and shop air)

Last sampled: 2025-08-05
6
samples
Show the individual readings (14)
Date Contaminant Concentration Limit Conc / limit Area sampled
2025-08-05 TC @ 160 0 UG ACTIVE MINING
2025-08-05 EC @ 160 0 UG ACTIVE MINING
2023-11-02 TC @ 160 0 UG GENERAL
2023-11-02 EC @ 160 0 UG GENERAL
2023-07-20 EC @ 160 0 UG ACTIVE MINING
2023-07-20 TC @ 160 0 UG ACTIVE MINING
2022-01-27 EC @ 160 0 UG TRAVEL/HAULAGE
2022-01-27 TC from EC @ 160 0 UG TRAVEL/HAULAGE
2019-07-10 TC @ 160 319 UG TRAVEL/HAULAGE
2019-07-10 EC @ 160 245 UG TRAVEL/HAULAGE
2019-07-10 TC from EC @ 160 0 UG TRAVEL/HAULAGE
2019-04-17 TC from EC @ 160 0 UG TRAVEL/HAULAGE
2019-04-17 TC @ 160 123 UG TRAVEL/HAULAGE
2019-04-17 EC @ 160 101 UG TRAVEL/HAULAGE
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.

Liberty Aggregates LLC 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 * 0.00 0.00 0.000
2023 * 0.00 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 5.77 5.77 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.
Ownership history
  1. Liberty Aggregates LLC 2017 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 24
2025 22
2024 21
2023 21
2022 22
2021 21
2020 20
2019 16
2018 4
2017 6
Source: MSHA quarterly employment and production, updated weekly.

Liberty Aggregates LLC sits in Clay 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.
Clay County, Missouri · Population 255,566
0.2%
Mining share of county employment
$86,150
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 12,658 4 0 316.0
2026 Q1 11,750 3 0 255.3
2025 Q4 12,898 0 0 0.0
2025 Q3 12,962 4 1 308.6
2025 Q2 11,815 5 2 423.2
2025 Q1 9,802 2 1 204.0
2024 Q4 10,769 2 1 185.7
2024 Q3 11,034 4 0 362.5
Show 30 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 12,329 3 1 243.3
2024 Q1 11,734 1 0 85.2
2023 Q4 11,208 3 0 267.7
2023 Q3 11,015 4 0 363.1
2023 Q2 13,758 9 3 654.2
2023 Q1 12,528 6 2 478.9
2022 Q4 10,638 5 0 470.0
2022 Q3 12,074 4 0 331.3
2022 Q2 13,508 9 2 666.3
2022 Q1 10,620 4 0 376.6
2021 Q4 12,690 3 1 236.4
2021 Q3 11,111 7 1 630.0
2021 Q2 10,881 0 0 0.0
2021 Q1 10,213 18 4 1762.5
2020 Q4 11,038 5 4 453.0
2020 Q3 11,763 4 0 340.0
2020 Q2 10,142 8 1 788.8
2020 Q1 11,141 6 0 538.6
2019 Q4 9,656 9 3 932.1
2019 Q3 9,517 8 1 840.6
2019 Q2 9,171 14 8 1526.6
2019 Q1 6,328 7 2 1106.2
2018 Q4 2,690 9 3 3345.7
2018 Q3 2,276 8 2 3514.9
2018 Q2 1,724 1 0 580.0
2018 Q1 2,020 9 3 4455.4
2017 Q4 2,828 7 2 2475.2
2017 Q3 3,194 14 3 4383.2
2017 Q2 2,965 2 1 674.5
2017 Q1 2,586 3 2 1160.1
No fatalities recorded at this mine.

Reportable incidents

2 on file

2019 · 1 incident

December 18, 2019 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Liberty Aggregates LLC · Caught in, under or between a moving and a stationary object

EE approached 420 scaler to get the attention of the operator. Operator confirmed by hand signal that operator saw EE. EE came to the window to discuss moving scaler to the side to make room to survey. Operator & scaler prematurely moved the "outrigger" & it was sat on EE's rt foot. Operator immediately raised machine when operator became aware of the incident.

2018 · 1 incident

November 29, 2018 MO · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey SLIP OR FALL OF PERSON
Liberty Aggregates LLC · Fall onto or against objects

Employee was loading blast holes when employee slipped and fell and landed on left elbow.