Data / Mines / Iowa / Webster County
Mines in Webster County, Iowa: 10 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 10 open mines in Webster County, Iowa, run by 8 operators and employing 127 people. Since January 1, 2022 its inspectors issued 119 citations and orders there with $47,865 in proposed penalties, and operators reported 12 injury or illness cases. The operators with the most open mines are Georgia-Pacific Gypsum LLC; Stratford Gravel, Inc.; Martin Marietta Materials, Inc.. Data from MSHA, November 6, 2026.
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- Open mines
- 10
- Operators
- 8
- Employees
- 127
- Active
- 8
- Intermittent
- 2
- Citations and orders since January 1, 2022
- 119
- Significant and substantial
- 7 (5.9%)
- Closure orders
- 2
- High negligence or reckless
- 12
- Proposed penalties
- $47,865
- Amount paid so far
- $43,853
- Inspections
- 119
- Inspector hours on site
- 1,110
- Citations per inspection
- 1.00 (all mines 2.30)
- Accident reports
- 13
- Injury and illness cases
- 12
- Fatalities
- 0
- Latest MSHA record
- October 8, 2026
Operators with the most open mines in Webster 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 |
|---|---|---|---|---|---|
| Georgia-Pacific Gypsum LLC | 2 | 23 | 22 | $3,083 | 3 |
| Stratford Gravel, Inc. | 2 | 4 | 4 | $417 | 0 |
| Martin Marietta Materials, Inc. | 1 | 48 | 44 | $10,424 | 4 |
| Cerne Calcium Company | 1 | 9 | 26 | $28,751 | 1 |
| United States Gypsum Company | 1 | 23 | 13 | $2,323 | 1 |
| Western Mining and Minerals, Inc. | 1 | 3 | 9 | $2,724 | 1 |
| Gold Bond Building Products, LLC. | 1 | 14 | 1 | $143 | 2 |
| Doyle Aggregates LLC | 1 | 3 | 0 | $0 | 0 |
Operators with the most citations in Webster 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 |
|---|---|---|---|---|---|
| Martin Marietta Materials, Inc. | 1 | 48 | 44 | $10,424 | 4 |
| Cerne Calcium Company | 1 | 9 | 26 | $28,751 | 1 |
| Georgia-Pacific Gypsum LLC | 2 | 23 | 22 | $3,083 | 3 |
| United States Gypsum Company | 1 | 23 | 13 | $2,323 | 1 |
| Western Mining and Minerals, Inc. | 1 | 3 | 9 | $2,724 | 1 |
| Stratford Gravel, Inc. | 2 | 4 | 4 | $417 | 0 |
| Gold Bond Building Products, LLC. | 1 | 14 | 1 | $143 | 2 |
| Doyle Aggregates LLC | 1 | 3 | 0 | $0 | 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 |
|---|---|---|---|---|---|
| Fort Dodge Mine | Martin Marietta Materials, Inc. | Webster County, IA | Crushed, broken limestone | 48 | 44 |
| Cerne Calcium Co., LLC | Cerne Calcium Company | Webster County, IA | Crushed, broken limestone | 9 | 26 |
| G-P Fort Dodge Quarry | Georgia-Pacific Gypsum LLC | Webster County, IA | Gypsum | 21 | 21 |
| Fort Dodge Quarry | United States Gypsum Company | Webster County, IA | Gypsum | 23 | 13 |
| Pleasant Valley Mine | Western Mining and Minerals, Inc. | Webster County, IA | Gypsum | 3 | 9 |
| Portable Plant #1 | Stratford Gravel, Inc. | Webster County, IA | Construction sand and gravel | 2 | 2 |
| Portable Screening / Wash Plant | Stratford Gravel, Inc. | Webster County, IA | Construction sand and gravel | 2 | 2 |
| Grebner-Oleson Pit | Gold Bond Building Products, LLC. | Webster County, IA | Gypsum | 14 | 1 |
| G-P Fort Dodge South Quarry | Georgia-Pacific Gypsum LLC | Webster County, IA | Gypsum | 2 | 1 |
| MG Quarry | Doyle Aggregates LLC | Webster County, IA | Gypsum | 3 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Gypsum | 6 | 60% |
| Crushed, broken limestone | 2 | 20% |
| Construction sand and gravel | 2 | 20% |
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 | 27 | 1 | $4,145 | 2 |
| 2023 | 24 | 2 | $30,293 | 2 |
| 2024 | 20 | 2 | $5,701 | 4 |
| 2025 | 26 | 2 | $5,449 | 3 |
| 2026 | 22 | 0 | $2,277 | 1 |
Standards cited most at mines in Webster 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 56.12004 | Surface metal and nonmetal mines | 10 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 6 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 6 |
| 30 CFR 57.12004 | Underground metal and nonmetal mines | 5 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 3 |
| 30 CFR 57.20003 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.14101 | Underground metal and nonmetal mines | 3 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 3 |
| 30 CFR 57.14207 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.11058 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.15031 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 2 |
Injury and illness cases at mines in Webster County, Iowa
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 7 |
| No lost time, or an occupational illness | 5 |
What the accident reports at mines in Webster County, Iowa describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 6 |
| Handling of materials | 2 |
| Fire | 1 |
| Handtools (nonpowered) | 1 |
| Nonpowered haulage | 1 |
| Falling/sliding/rolling materials | 1 |
| Powered haulage | 1 |
Equipment named in accident reports at mines in Webster County, Iowa
| Equipment | Reports |
|---|---|
| Front-end loader | 2 |
| Hand tools (not powered) | 1 |
| Man lift | 1 |
| Machine | 1 |
| Ore haulage trucks - off highway trucks | 1 |
| Trucks | 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.