Cobey Hollow Stone- Mico has $42K 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
8
Years on record
2017–2026
Latest incident
Apr 2026
Compliance record
MSHA citations since 2017
75
citations
18
significant & substantial
$42,470
proposed penalties
$42,470
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: 370 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Cobey Hollow Stone- Mico has $42K 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.
$42K
proposed penalties
$42K
current assessed
$42K
paid to date
$0
outstanding
74 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-03.
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.
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: 2020-01-09, 6 years ago
0%
of limit-tested samples over the exposure limit
4
samples
1
limit-tested
Most sampled contaminants
Respirable dust, <.1mg3
Nuisance dust, respirable, <1% Qtz1
Show the individual readings (4)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2020-01-09
Respirable dust, <.1mg
0
Rotary Bucket Ex. Operator
2020-01-09
Respirable dust, <.1mg
0
Truck Driver
2020-01-09
Respirable dust, <.1mg
0
Front-end Loader Operator
2020-01-09
Nuisance dust, respirable, <1% Qtz
0.35
10
0.04
Mechanic
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.
Cobey Hollow Stone- Mico recorded 2.92 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.
2.92
total case rate
0.00
days-away rate
0.000
fatality rate
Above 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 *
2.92
0.00
0.000
2024 *
3.92
3.92
0.000
2023 *
5.72
0.00
0.000
2022 *
6.40
0.00
0.000
2021 *
0.00
0.00
0.000
2020 *
8.52
0.00
0.000
2019 *
9.61
9.61
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
24
2025
25
2024
19
2023
15
2022
12
2021
11
2020
10
2019
9
2018
8
2017
7
Source: MSHA quarterly employment and production, updated weekly.
Cobey Hollow Stone- Mico 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
18,684
1
0
53.5
2026 Q1
16,766
1
0
59.6
2025 Q4
16,291
0
0
0.0
2025 Q3
17,346
0
0
0.0
2025 Q2
17,897
1
0
55.9
2025 Q1
17,004
2
2
117.6
2024 Q4
14,560
12
2
824.2
2024 Q3
14,211
6
1
422.2
Show 28 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
14,351
0
0
0.0
2024 Q1
7,864
14
2
1780.3
2023 Q4
7,857
0
0
0.0
2023 Q3
8,756
0
0
0.0
2023 Q2
9,779
3
2
306.8
2023 Q1
8,573
0
0
0.0
2022 Q4
8,946
3
0
335.3
2022 Q3
8,415
7
5
831.8
2022 Q2
7,596
0
0
0.0
2022 Q1
6,301
5
0
793.5
2021 Q4
7,756
0
0
0.0
2021 Q3
6,889
0
0
0.0
2021 Q2
6,490
0
0
0.0
2021 Q1
6,035
0
0
0.0
2020 Q4
6,662
1
0
150.1
2020 Q3
6,158
0
0
0.0
2020 Q2
4,694
2
0
426.1
2020 Q1
5,952
3
2
504.0
2019 Q4
4,271
0
0
0.0
2019 Q3
5,046
4
1
792.7
2019 Q2
6,020
0
0
0.0
2019 Q1
5,472
1
0
182.7
2018 Q4
4,335
0
0
0.0
2018 Q3
4,718
0
0
0.0
2018 Q2
4,582
2
0
436.5
2018 Q1
5,028
0
0
0.0
2017 Q4
4,413
2
0
453.2
2017 Q3
3,446
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
8 on file
2026 · 1 incident
April 13, 2026TX · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorHANDLING OF MATERIALS
Employee reported having back pain to EE's supervisor. EE was about to grease EE's loader, but hadn't started yet, when EE began to feel pain. EE does not know what caused it. EE was not doing anything when the pain started. Axis care line was called. Nurse advised rest, OTC pain meds, & Ice therapy. Employee was sent home at 12:40 to rest and follow nurses care plan.
EE texted Plant supervisor that the excavator operator was dropping large rocks too hard in EE's haul truck. EE did not report and injury at that time but after EE's shift EE called HR and said EE's back hurt. EE to Texas med clinic and the ER and was diagnosed with possible muscle and vertebrae injuries.
2024 · 1 incident
June 22, 2024TX · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDTOOLS (NONPOWERED)
EE was tightening a bolt on the Inertia Hawk Crusher with a wrench and ratchet. The ratchet slipped, EE lost balance and fell to the ground injuring left leg. EMS was called. EE was taken to the hospital.
2023 · 1 incident
June 1, 2023TX · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorDISORDERS (PHYSICAL AGENTS)
EE came to the office feeling sick- dizziness and muscle spasms. EE was unable to drive home. EMS Came to check EE. EE refused the hospital so EMT suggested Urgent care. EE was seen by Urgent Care doctor and diagnosed with dehydration & low electrolytes. All tests including Covid & Flu came back negative. Doctor gave EE a steroid shot, told EE to rest & drink lots of fluids.
2022 · 1 incident
February 9, 2022TX · Metal/Non-Metalmine manager, mine foreman, mine ownerMACHINERY
Injured employee was holding angle iron while another drilled a hole in it in order to mount a sign. The drill bit pierced the metal, caught employee's glove, and caused a puncture wound in hand. Injured employee driven to the office where the hand was washed and bandages applied. Employee was taken to the emergency room where they received 8 stitches and was released to go home.
2020 · 1 incident
June 24, 2020TX · Metal/Non-Metalrotary bucket excavator operatorMACHINERY
Employee was operating 336 excavator near surge pile. Weather was clear & dry. Employee loaded rock truck with 2 buckets of material. As EE turned to get third bucket, rocks & boulders slid down and hit excavator. A boulder crashed through side window, hitting employee's shoulder and showering EE with broken glass. Employee bruised shoulder and had minor lacerations from glass.
2019 · 1 incident
October 28, 2019TX · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerMACHINERY
EE broke a bone in foot after a rock from the crusher fell on it. EE went to close a side door on the crusher without properly shutting it down, first. EE was told by the plant manager to shut it down first, but EE did not. The plant manager saw EE approaching the machine while still running, and pressed the e-stop, but EE had already been hit by the rock.
2017 · 1 incident
November 1, 2017TX · Metal/Non-Metalmine manager, mine foreman, mine ownerSLIP OR FALL OF PERSON