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: 115 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
MSCI Crusher #4 has $1K in proposed MSHA penalties and $549 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.
$1K
proposed penalties
$1K
current assessed
$618
paid to date
$549
outstanding
4 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2026-02-23.
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.
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.
1citations taken to the federal commission · 20% of citations on record
Still open
1 · 100%
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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2026-01-15.
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.
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: 2026-02-24
0%
of limit-tested samples over the exposure limit
6
samples
2
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz3
Respirable dust, <.1mg2
Nuisance dust, respirable, <1% Qtz1
Show the individual readings (6)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-02-24
Quartz, respirable, >1% Qtz
0.41
0.69
0.59
Bobcat Operator
2026-02-24
Respirable dust, <.1mg
0
Bulldozer Operator
2026-02-24
Respirable dust, <.1mg
0
Front-end Loader Operator
2026-02-24
Quartz, respirable, >1% Qtz
0.14
Truck Driver
2024-09-10
Nuisance dust, respirable, <1% Qtz
0.26
10
0.03
Crusher Oper/Worker
2024-09-10
Quartz, respirable, >1% Qtz
0.19
Laborer, Bullgang
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.
MSCI Crusher #4 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 New Mexico, metal and nonmetal mining averaged 1.71 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
2021 *
8.81
8.81
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
10
2025
9
2024
9
2023
8
2022
8
2021
10
2020
6
Source: MSHA quarterly employment and production, updated weekly.
MSCI Crusher #4 sits in Valencia County, New Mexico, 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.
Valencia County, New Mexico · Population 77,382
0.2%
Mining share of county employment
$58,333
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
6,421
0
0
0.0
2026 Q1
6,040
2
0
331.1
2025 Q4
6,060
0
0
0.0
2025 Q3
5,895
1
1
169.6
2025 Q2
5,327
0
0
0.0
2025 Q1
6,232
0
0
0.0
2024 Q4
5,978
0
0
0.0
2024 Q3
4,992
1
0
200.3
Show 15 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
5,624
0
0
0.0
2024 Q1
5,239
0
0
0.0
2023 Q4
4,590
0
0
0.0
2023 Q3
1,199
0
0
0.0
2023 Q2
5,299
0
0
0.0
2023 Q1
4,977
0
0
0.0
2022 Q4
6,178
0
0
0.0
2022 Q2
4,105
0
0
0.0
2022 Q1
6,692
0
0
0.0
2021 Q4
8,210
1
1
121.8
2021 Q3
5,808
0
0
0.0
2021 Q2
5,149
0
0
0.0
2021 Q1
3,528
0
0
0.0
2020 Q4
3,835
0
0
0.0
2020 Q3
4,460
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2021 · 1 incident
October 25, 2021NM · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSTRIKING OR BUMPING
Employee was walking near service truck, one of the doors to a compartment was open and employee did not see it and kneed the corner of door with knee. Small cut on the center of the knee
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Other mines operated by Mountain States Constructors Inc