Portable Sand Plant #4 Metal/Non-Metal
Tiefenthaler Ag-Lime, Inc
· Surface
Controlled by
Dale Tiefenthaler
Lanesboro,
Carroll County,
IA
·
Intermittent
MSHA Mine ID: 1302448
Portable Sand Plant #4 has $2K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at Portable Sand Plant #4.
- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2016
11
citations
2
significant & substantial
$1,690
proposed penalties
$1,690
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2016
15
inspections on record
51
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: 51 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Portable Sand Plant #4 has $2K 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.$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
11 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-10-01.
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 | 72 | 1 | 0 | 13888.9 |
| 2025 Q3 | 80 | 0 | 0 | 0.0 |
| 2025 Q2 | 187 | 4 | 1 | 21390.4 |
| 2025 Q1 | 233 | 0 | 0 | 0.0 |
| 2024 Q4 | 218 | 0 | 0 | 0.0 |
| 2024 Q3 | 223 | 0 | 0 | 0.0 |
| 2024 Q2 | 165 | 1 | 0 | 6060.6 |
| 2022 Q4 | 50 | 0 | 0 | 0.0 |
Show 30 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2022 Q3 | 40 | 1 | 0 | 25000.0 |
| 2022 Q2 | 35 | 0 | 0 | 0.0 |
| 2022 Q1 | 2 | 0 | 0 | 0.0 |
| 2021 Q4 | 6 | 0 | 0 | 0.0 |
| 2021 Q3 | 30 | 1 | 0 | 33333.3 |
| 2021 Q2 | 26 | 0 | 0 | 0.0 |
| 2021 Q1 | 2 | 0 | 0 | 0.0 |
| 2020 Q4 | 11 | 0 | 0 | 0.0 |
| 2020 Q3 | 31 | 1 | 0 | 32258.1 |
| 2020 Q2 | 84 | 0 | 0 | 0.0 |
| 2020 Q1 | 2 | 0 | 0 | 0.0 |
| 2019 Q4 | 28 | 0 | 0 | 0.0 |
| 2019 Q3 | 45 | 0 | 0 | 0.0 |
| 2019 Q2 | 53 | 0 | 0 | 0.0 |
| 2019 Q1 | 5 | 0 | 0 | 0.0 |
| 2018 Q4 | 34 | 0 | 0 | 0.0 |
| 2018 Q3 | 40 | 0 | 0 | 0.0 |
| 2018 Q2 | 69 | 0 | 0 | 0.0 |
| 2018 Q1 | 4 | 0 | 0 | 0.0 |
| 2017 Q4 | 38 | 0 | 0 | 0.0 |
| 2017 Q3 | 43 | 0 | 0 | 0.0 |
| 2017 Q2 | 27 | 0 | 0 | 0.0 |
| 2017 Q1 | 4 | 0 | 0 | 0.0 |
| 2016 Q4 | 5 | 0 | 0 | 0.0 |
| 2016 Q3 | 94 | 2 | 1 | 21276.6 |
| 2016 Q2 | 4 | 0 | 0 | 0.0 |
| 2016 Q1 | 5 | 0 | 0 | 0.0 |
| 2015 Q4 | 28 | 0 | 0 | 0.0 |
| 2015 Q3 | 98 | 0 | 0 | 0.0 |
| 2015 Q2 | 100 | 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 Portable Sand Plant #4
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.