Simpson Mine Metal/Non-Metal
Thomas Cement
· Surface
Controlled by
Thomas Concrete Group AB
Jefferson,
Chesterfield County,
SC
·
Active
MSHA Mine ID: 3800730
Simpson Mine has $9K 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
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2010
47
citations
9
significant & substantial
$8,612
proposed penalties
$8,612
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2010
47
inspections on record
378
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: 378 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Simpson Mine has $9K 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.$9K
proposed penalties
$9K
current assessed
$9K
paid to date
$0
outstanding
46 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-10-29.
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 | 1,792 | 2 | 0 | 1116.1 |
| 2025 Q3 | 1,279 | 0 | 0 | 0.0 |
| 2025 Q2 | 1,838 | 0 | 0 | 0.0 |
| 2025 Q1 | 1,706 | 0 | 0 | 0.0 |
| 2024 Q4 | 1,823 | 0 | 0 | 0.0 |
| 2024 Q3 | 1,637 | 1 | 0 | 610.9 |
| 2024 Q2 | 1,961 | 0 | 0 | 0.0 |
| 2024 Q1 | 1,758 | 1 | 0 | 568.8 |
Show 54 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 1,832 | 0 | 0 | 0.0 |
| 2023 Q3 | 1,678 | 0 | 0 | 0.0 |
| 2023 Q2 | 1,781 | 2 | 0 | 1123.0 |
| 2023 Q1 | 1,598 | 0 | 0 | 0.0 |
| 2022 Q4 | 1,158 | 0 | 0 | 0.0 |
| 2022 Q3 | 2,006 | 0 | 0 | 0.0 |
| 2022 Q2 | 1,796 | 0 | 0 | 0.0 |
| 2022 Q1 | 1,124 | 0 | 0 | 0.0 |
| 2021 Q4 | 1,840 | 0 | 0 | 0.0 |
| 2021 Q3 | 1,778 | 0 | 0 | 0.0 |
| 2021 Q2 | 1,658 | 0 | 0 | 0.0 |
| 2021 Q1 | 1,870 | 1 | 0 | 534.8 |
| 2020 Q4 | 1,974 | 0 | 0 | 0.0 |
| 2020 Q3 | 1,788 | 0 | 0 | 0.0 |
| 2020 Q2 | 1,983 | 0 | 0 | 0.0 |
| 2020 Q1 | 1,876 | 1 | 0 | 533.0 |
| 2019 Q4 | 1,871 | 0 | 0 | 0.0 |
| 2019 Q3 | 1,825 | 0 | 0 | 0.0 |
| 2019 Q2 | 1,948 | 0 | 0 | 0.0 |
| 2019 Q1 | 1,801 | 0 | 0 | 0.0 |
| 2018 Q4 | 1,810 | 0 | 0 | 0.0 |
| 2018 Q3 | 1,744 | 0 | 0 | 0.0 |
| 2018 Q2 | 1,857 | 0 | 0 | 0.0 |
| 2018 Q1 | 1,728 | 0 | 0 | 0.0 |
| 2017 Q4 | 1,717 | 0 | 0 | 0.0 |
| 2017 Q3 | 1,837 | 0 | 0 | 0.0 |
| 2017 Q2 | 1,726 | 0 | 0 | 0.0 |
| 2017 Q1 | 1,764 | 0 | 0 | 0.0 |
| 2016 Q4 | 1,554 | 4 | 0 | 2574.0 |
| 2016 Q3 | 1,815 | 0 | 0 | 0.0 |
| 2016 Q2 | 1,868 | 2 | 0 | 1070.7 |
| 2016 Q1 | 1,574 | 1 | 0 | 635.3 |
| 2015 Q4 | 2,017 | 0 | 0 | 0.0 |
| 2015 Q3 | 1,803 | 0 | 0 | 0.0 |
| 2015 Q2 | 1,616 | 3 | 0 | 1856.4 |
| 2015 Q1 | 1,639 | 0 | 0 | 0.0 |
| 2014 Q4 | 1,666 | 1 | 0 | 600.2 |
| 2014 Q3 | 1,656 | 0 | 0 | 0.0 |
| 2014 Q2 | 1,509 | 0 | 0 | 0.0 |
| 2014 Q1 | 1,430 | 0 | 0 | 0.0 |
| 2013 Q4 | 1,470 | 1 | 0 | 680.3 |
| 2013 Q3 | 1,423 | 0 | 0 | 0.0 |
| 2013 Q2 | 1,489 | 0 | 0 | 0.0 |
| 2013 Q1 | 1,375 | 1 | 1 | 727.3 |
| 2012 Q4 | 1,517 | 5 | 2 | 3296.0 |
| 2012 Q3 | 1,542 | 0 | 0 | 0.0 |
| 2012 Q2 | 2,006 | 0 | 0 | 0.0 |
| 2012 Q1 | 1,515 | 8 | 1 | 5280.5 |
| 2011 Q4 | 1,409 | 0 | 0 | 0.0 |
| 2011 Q3 | 1,339 | 0 | 0 | 0.0 |
| 2011 Q2 | 1,631 | 0 | 0 | 0.0 |
| 2011 Q1 | 1,550 | 2 | 0 | 1290.3 |
| 2010 Q4 | 1,664 | 11 | 5 | 6610.6 |
| 2010 Q3 | 1,237 | 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.
For insurers, brokers, and safety consultants
The full compliance file on Simpson Mine
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.