Rio Medina Operations has $5K in proposed MSHA penalties and $2K outstanding across 4 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
3
Years on record
2023–2024
Latest incident
Dec 2024
Compliance record
MSHA citations since 2017
34
citations
1
significant & substantial
$5,387
proposed penalties
$3,678
paid to date
68% of proposed penalties paid to date, a $1,709 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: 343 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.
1
Section 107(a) orders
Most recent order: 2024-02-28.
On record since 2024.
Source: MSHA imminent-danger order records, updated weekly.
Rio Medina Operations has $5K in proposed MSHA penalties and $2K 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.
$5K
proposed penalties
$5K
current assessed
$4K
paid to date
$2K
outstanding
22 assessments are final orders; 4 contested dockets.
Of $1K in penalties contested before the Commission, $1K was upheld in final decisions.
As of the most recent assessment on 2026-02-18.
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.
11citations taken to the federal commission · 32% of citations on record
Settled
1 · 9%
Stood as issued
2 · 18%
Still open
8 · 73%
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 1 decided S&S contests · industry: 79%
10%
Penalty reduction in decided contests
$1K proposed, $1K 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 2026-04-08.
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: 2026-02-19
8
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg7
Quartz, respirable, >1% Qtz1
Show the individual readings (8)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-02-19
Quartz, respirable, >1% Qtz
0.32
Cleanup Man
2026-02-19
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-07-06
Respirable dust, <.1mg
0
Utility Man
2023-07-06
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-07-06
Respirable dust, <.1mg
0
Crusher Oper/Worker
2019-08-06
Respirable dust, <.1mg
0
Utility Man
2019-08-06
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-08-06
Respirable dust, <.1mg
0
Utility Man
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.
Rio Medina Operations 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 Texas, metal and nonmetal mining averaged 1.17 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 *
4.13
4.13
0.000
2023 *
5.78
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
0.00
0.00
0.000
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
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
14
2025
16
2024
18
2023
18
2022
18
2021
16
2020
18
2019
11
2018
10
2017
6
Source: MSHA quarterly employment and production, updated weekly.
Rio Medina Operations sits in Medina County, Texas, where the Census mining category is 3.1% 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.
Medina County, Texas · Population 52,419
3.1%
Mining share of county employment
$73,462
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
8,308
0
0
0.0
2026 Q1
7,344
0
0
0.0
2025 Q4
8,877
0
0
0.0
2025 Q3
9,869
1
0
101.3
2025 Q2
10,835
0
0
0.0
2025 Q1
9,641
3
0
311.2
2024 Q4
10,968
0
0
0.0
2024 Q3
9,859
0
0
0.0
Show 28 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
13,798
0
0
0.0
2024 Q1
13,783
3
1
217.7
2023 Q4
8,739
0
0
0.0
2023 Q3
9,192
1
0
108.8
2023 Q2
7,906
0
0
0.0
2023 Q1
8,763
0
0
0.0
2022 Q4
8,655
2
0
231.1
2022 Q3
8,015
3
0
374.3
2022 Q2
7,383
0
0
0.0
2022 Q1
6,805
0
0
0.0
2021 Q4
7,347
1
0
136.1
2021 Q3
8,924
0
0
0.0
2021 Q2
8,103
1
0
123.4
2021 Q1
6,719
0
0
0.0
2020 Q4
7,324
0
0
0.0
2020 Q3
7,702
0
0
0.0
2020 Q2
6,596
1
0
151.6
2020 Q1
6,104
0
0
0.0
2019 Q4
6,010
0
0
0.0
2019 Q3
4,868
0
0
0.0
2019 Q2
4,349
0
0
0.0
2019 Q1
5,226
1
0
191.4
2018 Q4
4,239
0
0
0.0
2018 Q3
4,811
1
0
207.9
2018 Q2
4,986
0
0
0.0
2018 Q1
4,379
1
0
228.4
2017 Q4
4,762
1
0
210.0
2017 Q3
3,247
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
3 on file
2024 · 1 incident
December 13, 2024TX · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
Operator was dismounting / stepping down from a CAT Loader and when their right ankle stepped down on the ground, the operator felt a pop and couldn't put weight on it. The loader was parked on level ground with dry conditions.
2023 · 2 incidents
October 27, 2023TX · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
Employee was working inside the cab of a bulldozer. Rain started so the employee quickly shut the doors on the bulldozer & began to dismount using three points of contact. Employee's right foot slipped on the blade push arm, causing the employee to fall. The employee came to rest on the bulldozer push arm with legs straddling each side, causing contusion to legs & lower back.
Assistant manager was notified of an approaching wildfire to the southeast of the location. The fire was stopped approx. 1/4 mile from mine property. The fire never contacted Capitol property. In an abundance of caution MSHA was contacted via the emergency line and notified of the approaching fire.