Mining Incidents

Greenwood Aggregates: 12 MSHA citations Metal/Non-Metal

Greenwood Aggregates Inc · Surface
Controlled by Robin S Bird
Philo, Mendocino County, CA  ·  Intermittent
MSHA Mine ID: 0405703

Greenwood Aggregates has $1K 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 2009
12
citations
4
significant & substantial
$1,428
proposed penalties
$1,428
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2007
23
inspections on record
246
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: 246 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Greenwood Aggregates has $1K 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.
$1K
proposed penalties
$1K
current assessed
$1K
paid to date
$0
outstanding
12 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-05-07.
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.
33.3%
significant & substantial
0.0%
high negligence or reckless
33.3%
reasonably likely or greater
58.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 25.0% low, 75.0% moderate, 0.0% 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: 2024-05-01
0%
of limit-tested samples over the exposure limit
5
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg3
  • Quartz, respirable, >1% Qtz1
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (5)
Date Contaminant Concentration Limit Conc / limit Occupation
2024-05-01 Respirable dust, <.1mg 0 Backhoe Operator
2020-02-11 Respirable dust, <.1mg 0 Front-end Loader Operator
2017-05-03 Respirable dust, <.1mg 0 Dry Screen Plant Operator
2010-09-21 Quartz, respirable, >1% Qtz 0.25 2.04 0.12 Crusher Oper/Worker
2010-08-02 Unlisted Particulate, respirable, <1% Qtz 0.23 Crusher Oper/Worker
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
  1. Greenwood Aggregates Inc 2007 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 3
2024 3
2023 3
2022 3
2021 3
2020 3
2019 3
2018 3
2017 3
2016 3
2015 3
2014 3
2013 3
2012 3
2011 3
2010 3
2009 3
2008 3
2007 3
Source: MSHA quarterly employment and production, updated weekly.

Greenwood Aggregates sits in Mendocino County, California, where the Census mining category is 0.3% 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.
Mendocino County, California · Population 90,709
0.3%
Mining share of county employment
$64,688
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 251 0 0 0.0
2026 Q1 96 0 0 0.0
2025 Q4 420 0 0 0.0
2025 Q3 780 0 0 0.0
2025 Q2 373 1 0 2681.0
2025 Q1 186 0 0 0.0
2024 Q4 433 0 0 0.0
2024 Q3 548 0 0 0.0
Show 66 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 406 0 0 0.0
2024 Q1 149 0 0 0.0
2023 Q4 487 0 0 0.0
2023 Q3 480 1 0 2083.3
2023 Q2 459 0 0 0.0
2023 Q1 398 0 0 0.0
2022 Q4 439 0 0 0.0
2022 Q3 583 0 0 0.0
2022 Q1 391 0 0 0.0
2021 Q4 518 0 0 0.0
2021 Q3 383 1 0 2611.0
2021 Q2 590 0 0 0.0
2020 Q4 617 0 0 0.0
2020 Q3 425 0 0 0.0
2020 Q2 593 0 0 0.0
2020 Q1 511 0 0 0.0
2019 Q3 589 0 0 0.0
2019 Q2 575 0 0 0.0
2019 Q1 566 0 0 0.0
2018 Q4 655 0 0 0.0
2018 Q2 576 0 0 0.0
2018 Q1 559 0 0 0.0
2017 Q4 638 0 0 0.0
2017 Q3 339 0 0 0.0
2017 Q2 527 0 0 0.0
2017 Q1 294 0 0 0.0
2016 Q4 582 0 0 0.0
2016 Q3 558 0 0 0.0
2016 Q2 583 0 0 0.0
2016 Q1 400 0 0 0.0
2015 Q4 469 0 0 0.0
2015 Q3 569 1 0 1757.5
2015 Q2 489 0 0 0.0
2015 Q1 479 0 0 0.0
2014 Q4 470 0 0 0.0
2014 Q3 613 0 0 0.0
2014 Q2 521 0 0 0.0
2014 Q1 567 1 0 1763.7
2013 Q4 559 0 0 0.0
2013 Q3 659 0 0 0.0
2013 Q2 620 0 0 0.0
2013 Q1 637 0 0 0.0
2012 Q4 568 0 0 0.0
2012 Q3 595 0 0 0.0
2012 Q2 568 0 0 0.0
2012 Q1 349 0 0 0.0
2011 Q4 749 0 0 0.0
2011 Q3 749 0 0 0.0
2011 Q2 816 0 0 0.0
2011 Q1 370 0 0 0.0
2010 Q4 316 1 0 3164.6
2010 Q3 652 2 1 3067.5
2010 Q2 480 0 0 0.0
2010 Q1 198 0 0 0.0
2009 Q4 307 0 0 0.0
2009 Q3 512 0 0 0.0
2009 Q2 563 2 2 3552.4
2009 Q1 349 0 0 0.0
2008 Q4 410 0 0 0.0
2008 Q3 492 0 0 0.0
2008 Q2 323 0 0 0.0
2008 Q1 222 0 0 0.0
2007 Q4 308 0 0 0.0
2007 Q3 574 0 0 0.0
2007 Q2 479 0 0 0.0
2007 Q1 459 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.