Data / Mines / Iowa / Clayton County
Mines in Clayton County, Iowa: 8 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 8 open mines in Clayton County, Iowa, run by 5 operators and employing 155 people. Since January 1, 2022 its inspectors issued 229 citations and orders there with $62,446 in proposed penalties, and operators reported 46 injury or illness cases. The operators with the most open mines are C.J. Moyna & Sons LLC; Pattison Company, LLC; Dyersville Ready Mix Inc. Data from MSHA, November 6, 2026.
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- Open mines
- 8
- Operators
- 5
- Employees
- 155
- Intermittent
- 6
- Active
- 2
- Citations and orders since January 1, 2022
- 229
- Significant and substantial
- 17 (7.4%)
- Closure orders
- 0
- High negligence or reckless
- 13
- Proposed penalties
- $62,446
- Amount paid so far
- $58,259
- Inspections
- 84
- Inspector hours on site
- 1,650
- Citations per inspection
- 2.73 (all mines 2.30)
- Accident reports
- 47
- Injury and illness cases
- 46
- Fatalities
- 0
- Latest MSHA record
- October 21, 2026
Operators with the most open mines in Clayton County, Iowa
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| C.J. Moyna & Sons LLC | 4 | 10 | 12 | $2,404 | 2 |
| Pattison Company, LLC | 1 | 139 | 190 | $56,445 | 43 |
| Dyersville Ready Mix Inc | 1 | 2 | 15 | $1,851 | 1 |
| L J Crushing | 1 | 2 | 9 | $1,293 | 0 |
| Recker Rock Products, LLC | 1 | 2 | 3 | $453 | 0 |
Operators with the most citations in Clayton County, Iowa
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Pattison Company, LLC | 1 | 139 | 190 | $56,445 | 43 |
| Dyersville Ready Mix Inc | 1 | 2 | 15 | $1,851 | 1 |
| C.J. Moyna & Sons LLC | 4 | 10 | 12 | $2,404 | 2 |
| L J Crushing | 1 | 2 | 9 | $1,293 | 0 |
| Recker Rock Products, LLC | 1 | 2 | 3 | $453 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Pattison Company, LLC | Pattison Company, LLC | Clayton County, IA | Sand, industrial | 139 | 190 |
| Portable Sand 2 | Dyersville Ready Mix Inc | Clayton County, IA | Construction sand and gravel | 2 | 15 |
| Mielke's Quarry | L J Crushing | Clayton County, IA | Crushed, broken limestone | 2 | 9 |
| Portable Wash Plant | C.J. Moyna & Sons LLC | Clayton County, IA | Construction sand and gravel | 2 | 7 |
| Portable Plant #2 | C.J. Moyna & Sons LLC | Clayton County, IA | Crushed, broken limestone | 4 | 4 |
| Recker Rock Products, LLC | Recker Rock Products, LLC | Clayton County, IA | Construction sand and gravel | 2 | 3 |
| Portable Grizzly | C.J. Moyna & Sons LLC | Clayton County, IA | Sand, industrial | 2 | 1 |
| Portable Grizzly #2 | C.J. Moyna & Sons LLC | Clayton County, IA | Crushed, broken limestone | 2 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 3 | 37.5% |
| Crushed, broken limestone | 3 | 37.5% |
| Sand, industrial | 2 | 25% |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 36 | 2 | $7,889 | 15 |
| 2023 | 56 | 5 | $12,115 | 12 |
| 2024 | 52 | 1 | $13,079 | 7 |
| 2025 | 47 | 4 | $16,616 | 9 |
| 2026 | 38 | 5 | $12,747 | 3 |
Standards cited most at mines in Clayton County, Iowa
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 22 |
| 30 CFR 57.12004 | Underground metal and nonmetal mines | 14 |
| 30 CFR 57.14101 | Underground metal and nonmetal mines | 12 |
| 30 CFR 57.14132 | Underground metal and nonmetal mines | 10 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 9 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 7 |
| 30 CFR 57.14207 | Underground metal and nonmetal mines | 7 |
| 30 CFR 57.3200 | Underground metal and nonmetal mines | 7 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 6 |
| 30 CFR 57.4102 | Underground metal and nonmetal mines | 6 |
| 30 CFR 57.14112 | Underground metal and nonmetal mines | 6 |
| 30 CFR 57.11058 | Underground metal and nonmetal mines | 6 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 5 |
| 30 CFR 57.14217 | Underground metal and nonmetal mines | 5 |
Injury and illness cases at mines in Clayton County, Iowa
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 32 |
| No lost time, or an occupational illness | 14 |
What the accident reports at mines in Clayton County, Iowa describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 13 |
| Slip or fall of person | 11 |
| Handtools (nonpowered) | 7 |
| Powered haulage | 7 |
| Stepping or kneeling on object | 3 |
| Other | 3 |
| Machinery | 2 |
| Disorders (repeated trauma) | 1 |
Equipment named in accident reports at mines in Clayton County, Iowa
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 8 |
| Ore haulage trucks - off highway trucks | 5 |
| Front-end loader | 2 |
| Hand tools (powered) | 2 |
| Conveyor | 1 |
| Mancar | 1 |
| Shovel | 1 |
| Ore haulage trucks - on highway trucks | 1 |
| Mine car | 1 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.