Bangor Quarry: 37 MSHA citations Metal/Non-Metal
Bangor Quarry has $5K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2008
37
citations
5
significant & substantial
$5,021
proposed penalties
$5,021
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2008
26
inspections on record
332
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: 332 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Bangor Quarry has $5K in proposed MSHA penalties and $0 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.$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$0
outstanding
37 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-01-07.
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.13.5%
significant & substantial
2.7%
high negligence or reckless
13.5%
reasonably likely or greater
37.8%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 18.9% low, 78.4% moderate, 2.7% high, 0.0% reckless.
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: 2025-10-08
ⓘ
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.33%
of limit-tested samples over the exposure limit
12
samples
3
limit-tested
Most sampled contaminants
- Quartz, respirable, >1% Qtz31 over
- Respirable dust, <.1mg9
Show the individual readings (12)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2015-09-16 | Quartz, respirable, >1% Qtz | 1.11 | 0.77 | 1.44 | Truck Driver |
| 2025-10-08 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2025-01-07 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2022-11-01 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2022-11-01 | Respirable dust, <.1mg | 0 | Supervisor, Co. Official | ||
| 2021-03-10 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2016-08-17 | Quartz, respirable, >1% Qtz | 0.3 | 1.32 | 0.23 | Truck Driver |
| 2016-08-17 | Respirable dust, <.1mg | 0 | Backhoe Operator | ||
| 2016-08-17 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2016-06-14 | Respirable dust, <.1mg | 0 | Backhoe Operator | ||
| 2016-06-14 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2015-09-16 | Quartz, respirable, >1% Qtz | 0.38 | 1.61 | 0.24 | 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
- Roy E Ladd Inc 2007 to 2015
- Bangor Rock LLC 2015 to 2022
- Bangor Aggregates LLC 2022 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 3 |
| 2025 | 3 |
| 2024 | 2 |
| 2023 | 3 |
| 2022 | 3 |
| 2021 | 6 |
| 2020 | 7 |
| 2019 | 8 |
| 2018 | 8 |
| 2017 | 6 |
| 2016 | 3 |
| 2015 | 4 |
| 2014 | 1 |
| 2013 | 1 |
| 2012 | 1 |
| 2011 | 2 |
| 2010 | 2 |
| 2009 | 3 |
| 2008 | 4 |
Source: MSHA quarterly employment and production, updated weekly.
Bangor Quarry sits in Butte County, California, where the Census mining category is 0.1% 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.Butte County, California · Population 209,470
0.1%
Mining share of county employment
$68,574
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 Q1 | 1,047 | 0 | 0 | 0.0 |
| 2025 Q4 | 1,720 | 0 | 0 | 0.0 |
| 2025 Q3 | 1,510 | 0 | 0 | 0.0 |
| 2025 Q2 | 860 | 0 | 0 | 0.0 |
| 2025 Q1 | 462 | 1 | 0 | 2164.5 |
| 2024 Q4 | 636 | 0 | 0 | 0.0 |
| 2024 Q3 | 462 | 0 | 0 | 0.0 |
| 2024 Q2 | 770 | 0 | 0 | 0.0 |
Show 56 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q1 | 564 | 3 | 0 | 5319.1 |
| 2023 Q4 | 618 | 0 | 0 | 0.0 |
| 2023 Q3 | 974 | 0 | 0 | 0.0 |
| 2023 Q2 | 1,736 | 0 | 0 | 0.0 |
| 2022 Q4 | 1,002 | 1 | 0 | 998.0 |
| 2021 Q4 | 4,018 | 2 | 0 | 497.8 |
| 2021 Q3 | 2,375 | 0 | 0 | 0.0 |
| 2021 Q2 | 2,160 | 0 | 0 | 0.0 |
| 2021 Q1 | 3,381 | 2 | 0 | 591.5 |
| 2020 Q4 | 5,290 | 0 | 0 | 0.0 |
| 2020 Q3 | 2,992 | 0 | 0 | 0.0 |
| 2020 Q2 | 2,370 | 3 | 0 | 1265.8 |
| 2020 Q1 | 4,468 | 0 | 0 | 0.0 |
| 2019 Q4 | 3,255 | 2 | 2 | 614.4 |
| 2019 Q3 | 2,200 | 0 | 0 | 0.0 |
| 2019 Q2 | 3,806 | 0 | 0 | 0.0 |
| 2019 Q1 | 5,839 | 0 | 0 | 0.0 |
| 2018 Q4 | 7,626 | 2 | 0 | 262.3 |
| 2018 Q3 | 4,158 | 3 | 1 | 721.5 |
| 2018 Q2 | 2,711 | 0 | 0 | 0.0 |
| 2018 Q1 | 2,949 | 3 | 1 | 1017.3 |
| 2017 Q4 | 2,243 | 0 | 0 | 0.0 |
| 2017 Q3 | 3,128 | 0 | 0 | 0.0 |
| 2017 Q2 | 2,774 | 0 | 0 | 0.0 |
| 2017 Q1 | 4,462 | 3 | 0 | 672.3 |
| 2016 Q4 | 1,126 | 0 | 0 | 0.0 |
| 2016 Q3 | 2,383 | 1 | 0 | 419.6 |
| 2016 Q2 | 1,288 | 4 | 1 | 3105.6 |
| 2016 Q1 | 1,003 | 0 | 0 | 0.0 |
| 2015 Q4 | 2,373 | 0 | 0 | 0.0 |
| 2015 Q3 | 1,432 | 0 | 0 | 0.0 |
| 2014 Q1 | 520 | 0 | 0 | 0.0 |
| 2013 Q4 | 520 | 0 | 0 | 0.0 |
| 2013 Q3 | 520 | 0 | 0 | 0.0 |
| 2013 Q2 | 520 | 0 | 0 | 0.0 |
| 2013 Q1 | 520 | 0 | 0 | 0.0 |
| 2012 Q4 | 520 | 0 | 0 | 0.0 |
| 2012 Q3 | 520 | 0 | 0 | 0.0 |
| 2012 Q2 | 520 | 1 | 0 | 1923.1 |
| 2012 Q1 | 520 | 0 | 0 | 0.0 |
| 2011 Q4 | 44 | 0 | 0 | 0.0 |
| 2011 Q3 | 557 | 0 | 0 | 0.0 |
| 2011 Q2 | 256 | 0 | 0 | 0.0 |
| 2011 Q1 | 564 | 0 | 0 | 0.0 |
| 2010 Q4 | 587 | 0 | 0 | 0.0 |
| 2010 Q3 | 514 | 1 | 0 | 1945.5 |
| 2010 Q2 | 635 | 0 | 0 | 0.0 |
| 2010 Q1 | 735 | 0 | 0 | 0.0 |
| 2009 Q4 | 732 | 0 | 0 | 0.0 |
| 2009 Q3 | 1,165 | 0 | 0 | 0.0 |
| 2009 Q2 | 1,020 | 0 | 0 | 0.0 |
| 2009 Q1 | 1,585 | 0 | 0 | 0.0 |
| 2008 Q4 | 1,259 | 1 | 0 | 794.3 |
| 2008 Q3 | 1,673 | 0 | 0 | 0.0 |
| 2008 Q2 | 1,256 | 0 | 0 | 0.0 |
| 2008 Q1 | 1,177 | 0 | 0 | 0.0 |
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.