284 Aggregates, LLC. · Fall onto or against objects
It was raining. Worker was filling DEF and went to step off of excavator and slipped. EE grabbed a handrail with right hand as they fell and "heard something pop".
Mission Materials: 108 MSHA citations Metal/Non-Metal
Mission Materials has $22K in proposed MSHA penalties and $668 outstanding across 1 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 3
- Years on record
- 2018–2021
- Latest incident
- Sep 2021
Compliance record
MSHA citations since 2009
108
citations
25
significant & substantial
$22,037
proposed penalties
$17,203
paid to date
78% of proposed penalties paid to date, a $4,834 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2009
41
inspections on record
619
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: 619 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Mission Materials has $22K in proposed MSHA penalties and $668 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.$22K
proposed penalties
$18K
current assessed
$17K
paid to date
$668
outstanding
106 assessments are final orders; 1 contested dockets.
Of $6K in penalties contested before the Commission, $2K was upheld in final decisions.
As of the most recent assessment on 2026-06-02.
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.23.1%
significant & substantial
6.5%
high negligence or reckless
23.1%
reasonably likely or greater
53.7%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 11.1% low, 82.4% moderate, 6.5% 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.
1
citations taken to the federal commission · 1% of citations on record
- Settled 1 · 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%
70%
Penalty reduction in decided contests
$6K proposed, $2K 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 2010-01-28.
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 |
|---|---|---|---|---|
| YORK 2010-155M | Settlement | Lesnick | 2011 | $6K → $2K |
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: 2026-06-03
ⓘ
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.17
samples
0
limit-tested
Most sampled contaminants
- Respirable dust, <.1mg15
- Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (17)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2026-06-03 | Unlisted Particulate, respirable, <1% Qtz | 0.53 | Washer Operator | ||
| 2026-06-03 | Respirable dust, <.1mg | 0 | Dry Screen Plant Operator | ||
| 2026-06-03 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2023-10-31 | Unlisted Particulate, respirable, <1% Qtz | 0.24 | Front-end Loader Operator | ||
| 2023-10-31 | Respirable dust, <.1mg | 0 | Scraper Operator | ||
| 2023-02-08 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2023-02-08 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2021-10-14 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2021-10-14 | Respirable dust, <.1mg | 0 | Backhoe Operator | ||
| 2020-10-15 | Respirable dust, <.1mg | 0 | Backhoe Operator | ||
| 2020-10-15 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2020-10-15 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2017-05-18 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2017-05-18 | Respirable dust, <.1mg | 0 | Supervisor, Co. Official | ||
| 2017-05-18 | Respirable dust, <.1mg | 0 | Laborer, Bullgang | ||
| 2012-01-10 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2012-01-10 | Respirable dust, <.1mg | 0 | 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.
Ownership history
- 284 Aggregates, LLC. 2009 to 2022
- Mission Materials 2022 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 6 |
| 2025 | 7 |
| 2024 | 9 |
| 2023 | 8 |
| 2022 | 6 |
| 2021 | 7 |
| 2020 | 8 |
| 2019 | 9 |
| 2018 | 7 |
| 2017 | 8 |
| 2016 | 11 |
| 2015 | 10 |
| 2014 | 9 |
| 2013 | 7 |
| 2012 | 7 |
| 2011 | 5 |
| 2010 | 4 |
| 2009 | 4 |
Source: MSHA quarterly employment and production, updated weekly.
Mission Materials sits in Sussex County, New Jersey, 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.Sussex County, New Jersey · Population 145,117
0.2%
Mining share of county employment
$114,316
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 | 2,483 | 2 | 0 | 805.5 |
| 2026 Q1 | 1,837 | 1 | 0 | 544.4 |
| 2025 Q4 | 2,711 | 0 | 0 | 0.0 |
| 2025 Q3 | 2,769 | 2 | 0 | 722.3 |
| 2025 Q2 | 2,701 | 0 | 0 | 0.0 |
| 2025 Q1 | 2,252 | 5 | 1 | 2220.2 |
| 2024 Q4 | 2,991 | 0 | 0 | 0.0 |
| 2024 Q3 | 3,554 | 0 | 0 | 0.0 |
Show 60 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 3,670 | 2 | 0 | 545.0 |
| 2024 Q1 | 2,698 | 0 | 0 | 0.0 |
| 2023 Q4 | 3,096 | 2 | 1 | 646.0 |
| 2023 Q3 | 4,300 | 0 | 0 | 0.0 |
| 2023 Q2 | 3,788 | 2 | 0 | 528.0 |
| 2023 Q1 | 1,710 | 1 | 1 | 584.8 |
| 2022 Q4 | 2,579 | 0 | 0 | 0.0 |
| 2022 Q3 | 2,537 | 0 | 0 | 0.0 |
| 2022 Q2 | 4,348 | 2 | 1 | 460.0 |
| 2022 Q1 | 2,409 | 0 | 0 | 0.0 |
| 2021 Q4 | 4,190 | 2 | 1 | 477.3 |
| 2021 Q3 | 4,765 | 0 | 0 | 0.0 |
| 2021 Q2 | 4,642 | 1 | 0 | 215.4 |
| 2021 Q1 | 2,313 | 0 | 0 | 0.0 |
| 2020 Q4 | 3,733 | 2 | 0 | 535.8 |
| 2020 Q3 | 4,187 | 0 | 0 | 0.0 |
| 2020 Q2 | 3,842 | 0 | 0 | 0.0 |
| 2020 Q1 | 1,830 | 0 | 0 | 0.0 |
| 2019 Q4 | 4,562 | 0 | 0 | 0.0 |
| 2019 Q3 | 5,343 | 0 | 0 | 0.0 |
| 2019 Q2 | 4,872 | 5 | 1 | 1026.3 |
| 2019 Q1 | 2,643 | 0 | 0 | 0.0 |
| 2018 Q4 | 3,865 | 0 | 0 | 0.0 |
| 2018 Q3 | 3,594 | 0 | 0 | 0.0 |
| 2018 Q2 | 3,553 | 3 | 0 | 844.4 |
| 2018 Q1 | 1,588 | 0 | 0 | 0.0 |
| 2017 Q4 | 4,332 | 1 | 0 | 230.8 |
| 2017 Q3 | 3,827 | 0 | 0 | 0.0 |
| 2017 Q2 | 3,937 | 5 | 2 | 1270.0 |
| 2017 Q1 | 3,080 | 6 | 3 | 1948.1 |
| 2016 Q4 | 4,388 | 0 | 0 | 0.0 |
| 2016 Q3 | 3,790 | 0 | 0 | 0.0 |
| 2016 Q2 | 3,968 | 3 | 2 | 756.0 |
| 2016 Q1 | 2,832 | 0 | 0 | 0.0 |
| 2015 Q4 | 3,565 | 4 | 1 | 1122.0 |
| 2015 Q3 | 2,731 | 0 | 0 | 0.0 |
| 2015 Q2 | 2,139 | 4 | 1 | 1870.0 |
| 2015 Q1 | 1,623 | 0 | 0 | 0.0 |
| 2014 Q4 | 2,629 | 6 | 3 | 2282.2 |
| 2014 Q3 | 4,164 | 0 | 0 | 0.0 |
| 2014 Q2 | 3,392 | 2 | 0 | 589.6 |
| 2014 Q1 | 1,834 | 0 | 0 | 0.0 |
| 2013 Q4 | 2,623 | 1 | 0 | 381.2 |
| 2013 Q3 | 2,750 | 0 | 0 | 0.0 |
| 2013 Q2 | 2,721 | 3 | 2 | 1102.5 |
| 2013 Q1 | 1,899 | 0 | 0 | 0.0 |
| 2012 Q4 | 1,849 | 2 | 0 | 1081.7 |
| 2012 Q3 | 2,939 | 4 | 1 | 1361.0 |
| 2012 Q2 | 2,733 | 0 | 0 | 0.0 |
| 2012 Q1 | 2,066 | 3 | 0 | 1452.1 |
| 2011 Q4 | 2,618 | 0 | 0 | 0.0 |
| 2011 Q3 | 2,306 | 0 | 0 | 0.0 |
| 2011 Q2 | 2,118 | 0 | 0 | 0.0 |
| 2011 Q1 | 1,203 | 2 | 0 | 1662.5 |
| 2010 Q2 | 2,200 | 0 | 0 | 0.0 |
| 2010 Q1 | 1,352 | 0 | 0 | 0.0 |
| 2009 Q4 | 2,629 | 2 | 1 | 760.7 |
| 2009 Q3 | 2,392 | 0 | 0 | 0.0 |
| 2009 Q2 | 2,226 | 0 | 0 | 0.0 |
| 2009 Q1 | 1,082 | 25 | 1 | 23105.4 |
No fatalities recorded at this mine.
Reportable incidents
3 on file2021 · 1 incident
2020 · 1 incident
August 10, 2020
NJ · Metal/Non-Metal
dry screening plant operator, screen house operator
SLIP OR FALL OF PERSON
284 Aggregates, LLC. · Over-exertion (Not Elsewhere Classified)
Employee was walking around Sandvic QA340 and stepped in a small pothole and fell on the ground. This resulted in injuring a knee, specifically, tearing the ACL.
2018 · 1 incident
284 Aggregates, LLC. · Fall from machine
The operator was standing on the track to access the tool box during the pre-shift. Track was clean and dry. EE stepped to side to open the toolbox and feet slipped off of the side of the track. EE was unable to retain hold on the handrail and fell to the ground. EE was bruised.