Western Materials Site #1 has $4K 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
1
Years on record
2012
Latest incident
Mar 2012
Compliance record
MSHA citations since 2009
28
citations
5
significant & substantial
$3,548
proposed penalties
$3,548
paid to date
100% of proposed penalties paid to date, a $0 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: 355 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Western Materials Site #1 has $4K 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.
$4K
proposed penalties
$4K
current assessed
$4K
paid to date
$0
outstanding
28 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-06-25.
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: 2026-01-06
5
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg5
Show the individual readings (5)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-01-06
Respirable dust, <.1mg
0
Front-end Loader Operator
2026-01-06
Respirable dust, <.1mg
0
Bulldozer Operator
2018-12-18
Respirable dust, <.1mg
0
Front-end Loader Operator
2016-11-09
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-09-23
Respirable dust, <.1mg
0
Complete Load-Haul-Dump
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
3
2025
3
2024
2
2023
2
2022
2
2021
2
2020
3
2019
2
2018
2
2017
2
2016
2
2015
2
2014
3
2013
3
2012
3
2011
3
2010
3
2009
3
2008
3
Source: MSHA quarterly employment and production, updated weekly.
Western Materials Site #1 sits in Navajo County, Arizona, where the Census mining category is 0.8% 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.
Navajo County, Arizona · Population 107,744
0.8%
Mining share of county employment
$52,752
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
1,243
0
0
0.0
2026 Q1
1,327
0
0
0.0
2025 Q4
1,651
0
0
0.0
2025 Q3
1,517
0
0
0.0
2025 Q2
1,248
1
0
801.3
2025 Q1
1,333
0
0
0.0
2024 Q4
976
1
0
1024.6
2024 Q3
992
0
0
0.0
Show 63 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
1,256
0
0
0.0
2024 Q1
1,024
1
0
976.6
2023 Q4
928
0
0
0.0
2023 Q3
1,008
0
0
0.0
2023 Q2
1,056
0
0
0.0
2023 Q1
1,040
0
0
0.0
2022 Q4
928
0
0
0.0
2022 Q3
1,024
0
0
0.0
2022 Q2
1,135
0
0
0.0
2022 Q1
1,002
2
0
1996.0
2021 Q4
944
0
0
0.0
2021 Q3
1,024
0
0
0.0
2021 Q2
1,122
0
0
0.0
2021 Q1
928
0
0
0.0
2020 Q4
912
0
0
0.0
2020 Q3
1,040
0
0
0.0
2020 Q2
1,024
0
0
0.0
2020 Q1
812
0
0
0.0
2019 Q4
981
0
0
0.0
2019 Q3
48
0
0
0.0
2019 Q2
501
0
0
0.0
2019 Q1
843
0
0
0.0
2018 Q4
847
1
0
1180.6
2018 Q3
927
0
0
0.0
2018 Q2
947
0
0
0.0
2018 Q1
1,217
0
0
0.0
2017 Q4
1,034
1
0
967.1
2017 Q3
960
0
0
0.0
2017 Q2
960
1
0
1041.7
2017 Q1
960
0
0
0.0
2016 Q4
960
2
0
2083.3
2016 Q3
960
0
0
0.0
2016 Q2
960
0
0
0.0
2016 Q1
960
0
0
0.0
2015 Q4
960
0
0
0.0
2015 Q3
960
2
1
2083.3
2015 Q2
1,440
0
0
0.0
2015 Q1
960
0
0
0.0
2014 Q4
1,440
0
0
0.0
2014 Q3
960
0
0
0.0
2014 Q2
960
0
0
0.0
2014 Q1
1,560
0
0
0.0
2013 Q4
1,560
0
0
0.0
2013 Q3
1,560
0
0
0.0
2013 Q2
1,560
4
2
2564.1
2013 Q1
1,560
0
0
0.0
2012 Q4
1,560
6
2
3846.2
2012 Q3
1,560
0
0
0.0
2012 Q2
1,560
0
0
0.0
2012 Q1
1,560
0
0
0.0
2011 Q4
1,560
0
0
0.0
2011 Q3
1,560
0
0
0.0
2011 Q2
1,560
0
0
0.0
2011 Q1
1,560
1
0
641.0
2010 Q4
1,560
0
0
0.0
2010 Q3
1,560
1
0
641.0
2010 Q2
1,560
3
0
1923.1
2010 Q1
1,440
0
0
0.0
2009 Q4
1,560
0
0
0.0
2009 Q3
1,560
0
0
0.0
2009 Q2
1,666
0
0
0.0
2009 Q1
1,657
1
0
603.5
2008 Q4
1,440
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2012 · 1 incident
March 12, 2012AZ · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanSLIP OR FALL OF PERSON