Crusher #1: 93 MSHA citations Metal/Non-Metal
Rock Pros USA, LLC
· Surface
MSHA Mine ID: 0203422
Crusher #1 has $101K in proposed MSHA penalties and $0 outstanding across 4 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 2020
93
citations
41
significant & substantial
$101,339
proposed penalties
$101,339
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2020
30
inspections on record
407
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: 407 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘ
A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.3
Section 107(a) orders
Most recent order: 2025-04-18.
On record since 2024.
Source: MSHA imminent-danger order records, updated weekly.
Crusher #1 has $101K in proposed MSHA penalties and $0 outstanding across 4 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.$101K
proposed penalties
$101K
current assessed
$101K
paid to date
$0
outstanding
84 assessments are final orders; 4 contested dockets.
Of $41K in penalties contested before the Commission, $41K was upheld in final decisions.
As of the most recent assessment on 2026-06-03.
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.47.1%
significant & substantial
13.8%
high negligence or reckless
47.1%
reasonably likely or greater
51.7%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 9.2% low, 77.0% moderate, 13.8% 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.
13
citations taken to the federal commission · 14% of citations on record
- Settled 1 · 8%
- Stood as issued 12 · 92%
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 13 decided S&S contests · industry: 79%
0%
Penalty reduction in decided contests
$31K proposed, $31K 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 2025-06-30.
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 |
|---|---|---|---|---|
| WEST 2025-0303 | Default | 2025 | $25K → $25K | |
| WEST 2025-0387 | Settlement | Simonton | 2026 | $10K → $10K |
| WEST 2022-0033 | Dismissal | Simonton | 2022 | $5K → $5K |
| WEST 2022-0032 | Settlement | 2022 | $1K → $1K |
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: 2025-10-15
ⓘ
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.0%
of limit-tested samples over the exposure limit
8
samples
4
limit-tested
Most sampled contaminants
- Quartz, respirable, >1% Qtz5
- Respirable dust, <.1mg2
- Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (8)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2025-10-15 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2025-10-15 | Quartz, respirable, >1% Qtz | 0.25 | 0.49 | 0.51 | Laborer, Bullgang |
| 2025-10-15 | Respirable dust, <.1mg | 0 | Laborer, Bullgang | ||
| 2023-08-29 | Quartz, respirable, >1% Qtz | 0.16 | Front-end Loader Operator | ||
| 2023-08-29 | Unlisted Particulate, respirable, <1% Qtz | 4.22 | Laborer, Bullgang | ||
| 2023-08-29 | Quartz, respirable, >1% Qtz | 0.15 | 0.86 | 0.17 | Front-end Loader Operator |
| 2023-05-11 | Quartz, respirable, >1% Qtz | 0.43 | 0.53 | 0.81 | Front-end Loader Operator |
| 2023-05-11 | Quartz, respirable, >1% Qtz | 0.41 | 0.86 | 0.48 | 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.
Ownership history
- Rock Pros USA, LLC 2019 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 14 |
| 2025 | 17 |
| 2024 | 9 |
| 2023 | 9 |
| 2022 | 7 |
| 2021 | 6 |
| 2020 | 5 |
| 2019 | 4 |
Source: MSHA quarterly employment and production, updated weekly.
Crusher #1 sits in Pinal 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.Pinal County, Arizona · Population 449,219
0.8%
Mining share of county employment
$77,588
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 | 7,418 | 3 | 2 | 404.4 |
| 2026 Q1 | 6,265 | 0 | 0 | 0.0 |
| 2025 Q4 | 9,536 | 2 | 0 | 209.7 |
| 2025 Q3 | 7,692 | 25 | 8 | 3250.1 |
| 2025 Q1 | 5,207 | 6 | 2 | 1152.3 |
| 2024 Q4 | 5,860 | 0 | 0 | 0.0 |
| 2024 Q3 | 3,613 | 8 | 6 | 2214.2 |
| 2024 Q2 | 3,756 | 1 | 0 | 266.2 |
Show 18 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q1 | 2,625 | 0 | 0 | 0.0 |
| 2023 Q4 | 3,545 | 11 | 2 | 3103.0 |
| 2023 Q3 | 4,032 | 2 | 2 | 496.0 |
| 2023 Q2 | 4,638 | 2 | 1 | 431.2 |
| 2023 Q1 | 2,803 | 0 | 0 | 0.0 |
| 2022 Q4 | 2,217 | 1 | 1 | 451.1 |
| 2022 Q3 | 3,556 | 0 | 0 | 0.0 |
| 2022 Q2 | 2,605 | 2 | 1 | 767.8 |
| 2022 Q1 | 4,805 | 1 | 0 | 208.1 |
| 2021 Q4 | 3,180 | 0 | 0 | 0.0 |
| 2021 Q3 | 3,348 | 7 | 5 | 2090.8 |
| 2021 Q2 | 2,987 | 0 | 0 | 0.0 |
| 2021 Q1 | 2,228 | 0 | 0 | 0.0 |
| 2020 Q4 | 2,457 | 2 | 0 | 814.0 |
| 2020 Q3 | 2,107 | 4 | 0 | 1898.4 |
| 2020 Q2 | 2,039 | 0 | 0 | 0.0 |
| 2020 Q1 | 1,310 | 0 | 0 | 0.0 |
| 2019 Q4 | 745 | 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.