Three Deck Screener Metal/Non-Metal
Olmsted Aggregate
· Surface
Controlled by
Christopher DeCook
Rochester,
Olmsted County,
MN
·
Intermittent
MSHA Mine ID: 2103979
Three Deck Screener has $880 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 2022
6
citations
0
significant & substantial
$880
proposed penalties
$880
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
11
inspections on record
65
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: 65 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Three Deck Screener has $880 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.$880
proposed penalties
$880
current assessed
$880
paid to date
$0
outstanding
6 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-11-05.
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 | 1,229 | 4 | 0 | 3254.7 |
| 2025 Q3 | 1,358 | 0 | 0 | 0.0 |
| 2025 Q2 | 1,356 | 0 | 0 | 0.0 |
| 2025 Q1 | 569 | 0 | 0 | 0.0 |
| 2024 Q4 | 1,063 | 0 | 0 | 0.0 |
| 2024 Q3 | 1,203 | 0 | 0 | 0.0 |
| 2024 Q2 | 1,158 | 0 | 0 | 0.0 |
| 2024 Q1 | 611 | 0 | 0 | 0.0 |
Show 14 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 762 | 0 | 0 | 0.0 |
| 2023 Q3 | 1,149 | 0 | 0 | 0.0 |
| 2023 Q2 | 1,450 | 1 | 0 | 689.7 |
| 2023 Q1 | 91 | 0 | 0 | 0.0 |
| 2022 Q4 | 277 | 0 | 0 | 0.0 |
| 2022 Q3 | 1,796 | 0 | 0 | 0.0 |
| 2022 Q2 | 2,314 | 1 | 0 | 432.2 |
| 2022 Q1 | 2,104 | 0 | 0 | 0.0 |
| 2021 Q4 | 1,191 | 0 | 0 | 0.0 |
| 2021 Q3 | 1,998 | 0 | 0 | 0.0 |
| 2021 Q2 | 1,276 | 0 | 0 | 0.0 |
| 2021 Q1 | 1,213 | 0 | 0 | 0.0 |
| 2020 Q4 | 649 | 0 | 0 | 0.0 |
| 2020 Q3 | 624 | 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 Three Deck Screener
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.