Cobra Stone Quarry #2 Metal/Non-Metal
Cobra Stone Inc
· Surface
Controlled by
Pedro E Aguado
San Saba,
San Saba County,
TX
·
Active
MSHA Mine ID: 4104729
Cobra Stone Quarry #2 has $51K in proposed MSHA penalties and $0 outstanding across 2 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 2008
108
citations
33
significant & substantial
$51,052
proposed penalties
$36,106
paid to date
71% of proposed penalties paid to date, a $14,946 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2008
53
inspections on record
577
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: 577 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Cobra Stone Quarry #2 has $51K in proposed MSHA penalties and $0 outstanding across 2 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.$51K
proposed penalties
$36K
current assessed
$36K
paid to date
$0
outstanding
108 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2026-04-29.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
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 |
|---|---|---|---|---|
| 2025 Q4 | 42,742 | 0 | 0 | 0.0 |
| 2025 Q3 | 29,076 | 0 | 0 | 0.0 |
| 2025 Q2 | 23,944 | 4 | 1 | 167.1 |
| 2025 Q1 | 13,842 | 2 | 0 | 144.5 |
| 2024 Q4 | 28,425 | 0 | 0 | 0.0 |
| 2024 Q3 | 19,966 | 8 | 1 | 400.7 |
| 2024 Q2 | 15,100 | 0 | 0 | 0.0 |
| 2024 Q1 | 16,829 | 2 | 0 | 118.8 |
Show 60 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 22,177 | 0 | 0 | 0.0 |
| 2023 Q3 | 13,964 | 2 | 1 | 143.2 |
| 2023 Q2 | 18,405 | 2 | 0 | 108.7 |
| 2022 Q2 | 22,804 | 6 | 2 | 263.1 |
| 2022 Q1 | 14,081 | 0 | 0 | 0.0 |
| 2021 Q4 | 13,762 | 5 | 2 | 363.3 |
| 2021 Q3 | 11,394 | 1 | 0 | 87.8 |
| 2021 Q2 | 8,171 | 0 | 0 | 0.0 |
| 2021 Q1 | 8,560 | 2 | 1 | 233.6 |
| 2020 Q4 | 8,505 | 0 | 0 | 0.0 |
| 2020 Q3 | 9,600 | 2 | 0 | 208.3 |
| 2020 Q2 | 9,500 | 0 | 0 | 0.0 |
| 2020 Q1 | 8,087 | 1 | 0 | 123.7 |
| 2019 Q4 | 9,028 | 0 | 0 | 0.0 |
| 2019 Q3 | 12,588 | 0 | 0 | 0.0 |
| 2019 Q2 | 11,399 | 1 | 0 | 87.7 |
| 2019 Q1 | 11,475 | 0 | 0 | 0.0 |
| 2018 Q4 | 9,693 | 1 | 0 | 103.2 |
| 2018 Q3 | 11,016 | 1 | 1 | 90.8 |
| 2018 Q2 | 12,417 | 0 | 0 | 0.0 |
| 2018 Q1 | 12,642 | 2 | 0 | 158.2 |
| 2017 Q4 | 31,672 | 0 | 0 | 0.0 |
| 2017 Q3 | 48,452 | 0 | 0 | 0.0 |
| 2017 Q2 | 45,851 | 1 | 0 | 21.8 |
| 2017 Q1 | 23,602 | 10 | 3 | 423.7 |
| 2016 Q4 | 35,554 | 0 | 0 | 0.0 |
| 2016 Q3 | 40,776 | 2 | 0 | 49.0 |
| 2016 Q2 | 41,811 | 0 | 0 | 0.0 |
| 2016 Q1 | 24,795 | 3 | 1 | 121.0 |
| 2015 Q4 | 33,660 | 0 | 0 | 0.0 |
| 2015 Q3 | 45,546 | 1 | 0 | 22.0 |
| 2015 Q2 | 40,884 | 1 | 0 | 24.5 |
| 2015 Q1 | 22,797 | 2 | 1 | 87.7 |
| 2014 Q4 | 29,659 | 0 | 0 | 0.0 |
| 2014 Q3 | 28,448 | 1 | 0 | 35.2 |
| 2014 Q2 | 25,079 | 0 | 0 | 0.0 |
| 2014 Q1 | 22,753 | 1 | 1 | 44.0 |
| 2013 Q4 | 20,082 | 0 | 0 | 0.0 |
| 2013 Q3 | 21,567 | 0 | 0 | 0.0 |
| 2013 Q2 | 22,552 | 3 | 3 | 133.0 |
| 2013 Q1 | 17,193 | 0 | 0 | 0.0 |
| 2012 Q4 | 17,661 | 2 | 1 | 113.2 |
| 2012 Q3 | 1,893 | 3 | 3 | 1584.8 |
| 2012 Q2 | 1,169 | 0 | 0 | 0.0 |
| 2012 Q1 | 1,234 | 6 | 0 | 4862.2 |
| 2011 Q4 | 1,081 | 0 | 0 | 0.0 |
| 2011 Q3 | 1,102 | 1 | 0 | 907.4 |
| 2011 Q2 | 692 | 0 | 0 | 0.0 |
| 2011 Q1 | 786 | 0 | 0 | 0.0 |
| 2010 Q4 | 872 | 4 | 3 | 4587.2 |
| 2010 Q3 | 1,098 | 0 | 0 | 0.0 |
| 2010 Q2 | 889 | 0 | 0 | 0.0 |
| 2010 Q1 | 719 | 3 | 2 | 4172.5 |
| 2009 Q4 | 546 | 5 | 0 | 9157.5 |
| 2009 Q3 | 3,672 | 0 | 0 | 0.0 |
| 2009 Q2 | 8,075 | 4 | 3 | 495.4 |
| 2009 Q1 | 7,072 | 0 | 0 | 0.0 |
| 2008 Q4 | 11,855 | 0 | 0 | 0.0 |
| 2008 Q3 | 10,671 | 2 | 2 | 187.4 |
| 2008 Q2 | 14,530 | 4 | 0 | 275.3 |
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.
For insurers, brokers, and safety consultants
The full compliance file on Cobra Stone Quarry #2
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.