Data / Mines / Nebraska / Stone mines
Stone mines in Nebraska: 17 open mines and MSHA citations
MSHA lists 17 open stone mines in Nebraska, run by 15 operators and employing 437 people. Since January 1, 2022 its inspectors issued 918 citations and orders there with $797,884 in proposed penalties, and operators reported 68 injury or illness cases. The operators with the most open mines are Martin Marietta Materials, Inc.; Ash Grove Cement Company; Kerford Limestone Company. Data from MSHA, November 6, 2026.
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- Open mines
- 17
- Operators
- 15
- Employees
- 437
- Active
- 9
- Intermittent
- 8
- Citations and orders since January 1, 2022
- 918
- Significant and substantial
- 153 (16.7%)
- Closure orders
- 22
- High negligence or reckless
- 83
- Proposed penalties
- $797,884
- Amount paid so far
- $447,908
- Inspections
- 259
- Inspector hours on site
- 5,274
- Citations per inspection
- 3.54 (all mines 2.30)
- Accident reports
- 75
- Injury and illness cases
- 68
- Fatalities
- 0
- Latest MSHA record
- November 4, 2026
Operators with the most open mines in Nebraska
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 |
|---|---|---|---|---|---|
| Martin Marietta Materials, Inc. | 3 | 208 | 206 | $97,086 | 23 |
| Ash Grove Cement Company | 1 | 111 | 450 | $549,222 | 29 |
| Kerford Limestone Company | 1 | 72 | 91 | $78,815 | 13 |
| Hard Rock Quarries, LLC. | 1 | 3 | 34 | $30,469 | 0 |
| Whetrock Inc | 1 | 11 | 33 | $10,968 | 0 |
| CenCon of Kansas LLC | 1 | 4 | 25 | $5,462 | 0 |
| Beatrice Concrete Company | 1 | 7 | 23 | $6,217 | 3 |
| Diamond Lime LLC | 1 | 5 | 17 | $2,971 | 0 |
| Maverick Rentals LLP | 1 | 1 | 11 | $12,885 | 0 |
| Vontz Paving, Inc | 1 | 2 | 7 | $1,029 | 0 |
| Haddan Lime Products LLC | 1 | 2 | 5 | $739 | 0 |
| Pine Bluffs Gravel & Excavating | 1 | 4 | 5 | $151 | 0 |
| Logic 1 Lime, LLC | 1 | 2 | 4 | $604 | 0 |
| Werner Aggregates, Inc. | 1 | 3 | 4 | $626 | 0 |
| Simon Contractors | 1 | 2 | 3 | $640 | 0 |
Operators with the most citations in Nebraska
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Ash Grove Cement Company | 1 | 111 | 450 | $549,222 | 29 |
| Martin Marietta Materials, Inc. | 3 | 208 | 206 | $97,086 | 23 |
| Kerford Limestone Company | 1 | 72 | 91 | $78,815 | 13 |
| Hard Rock Quarries, LLC. | 1 | 3 | 34 | $30,469 | 0 |
| Whetrock Inc | 1 | 11 | 33 | $10,968 | 0 |
| CenCon of Kansas LLC | 1 | 4 | 25 | $5,462 | 0 |
| Beatrice Concrete Company | 1 | 7 | 23 | $6,217 | 3 |
| Diamond Lime LLC | 1 | 5 | 17 | $2,971 | 0 |
| Maverick Rentals LLP | 1 | 1 | 11 | $12,885 | 0 |
| Vontz Paving, Inc | 1 | 2 | 7 | $1,029 | 0 |
| Haddan Lime Products LLC | 1 | 2 | 5 | $739 | 0 |
| Pine Bluffs Gravel & Excavating | 1 | 4 | 5 | $151 | 0 |
| Logic 1 Lime, LLC | 1 | 2 | 4 | $604 | 0 |
| Werner Aggregates, Inc. | 1 | 3 | 4 | $626 | 0 |
| Simon Contractors | 1 | 2 | 3 | $640 | 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 |
|---|---|---|---|---|---|
| Louisville Plant Quarry & Mill | Ash Grove Cement Company | Cass County, NE | Cement | 111 | 450 |
| Weeping Water Mine | Martin Marietta Materials, Inc. | Cass County, NE | Crushed, broken limestone | 95 | 100 |
| Fort Calhoun Underground Mine | Martin Marietta Materials, Inc. | Washington County, NE | Crushed, broken limestone | 102 | 92 |
| Kerford Limestone Company | Kerford Limestone Company | Cass County, NE | Crushed, broken limestone | 72 | 91 |
| Barnston Quarry | Hard Rock Quarries, LLC. | Gage County, NE | Crushed, broken limestone | 3 | 34 |
| Whetrock Inc (Portable2 | Whetrock Inc | Cass County, NE | Crushed, broken limestone | 11 | 33 |
| Portable #1 | CenCon of Kansas LLC | Franklin County, NE | Crushed, broken limestone | 4 | 25 |
| Seitz Quarry | Beatrice Concrete Company | Gage County, NE | Crushed, broken limestone | 7 | 23 |
| Portable 1 | Diamond Lime LLC | Nuckolls County, NE | Crushed, broken stone | 5 | 17 |
| DuBois Quarry | Martin Marietta Materials, Inc. | Pawnee County, NE | Crushed, broken limestone | 11 | 14 |
| Portable #1 | Maverick Rentals LLP | Cass County, NE | Crushed, broken stone | 1 | 11 |
| Gravel Crusher | Vontz Paving, Inc | Buffalo County, NE | Crushed, broken stone | 2 | 7 |
| Smith Pit | Pine Bluffs Gravel & Excavating | Deuel County, NE | Crushed, broken limestone | 4 | 5 |
| Gladstone Pit | Haddan Lime Products LLC | Jefferson County, NE | Crushed, broken limestone | 2 | 5 |
| Red Cloud (latta) | Werner Aggregates, Inc. | Webster County, NE | Crushed, broken stone | 3 | 4 |
| M & M Lime | Logic 1 Lime, LLC | Jefferson County, NE | Crushed, broken limestone | 2 | 4 |
| Nebraska Portable Barge | Simon Contractors | Deuel County, NE | Dimension stone | 2 | 3 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken limestone | 11 | 64.7% |
| Crushed, broken stone | 4 | 23.5% |
| Cement | 1 | 5.9% |
| Dimension stone | 1 | 5.9% |
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 | 114 | 23 | $88,578 | 14 |
| 2023 | 213 | 45 | $177,513 | 16 |
| 2024 | 228 | 39 | $166,887 | 11 |
| 2025 | 158 | 15 | $77,544 | 16 |
| 2026 | 205 | 31 | $287,362 | 11 |
Standards cited most at stone mines in Nebraska
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 56.20003 | Surface metal and nonmetal mines | 61 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 56 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 53 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 44 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 29 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 23 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 21 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 21 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 19 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 19 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 19 |
| 30 CFR 57.4102 | Underground metal and nonmetal mines | 18 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 16 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.4102 | Surface metal and nonmetal mines | 14 |
Injury and illness cases at stone mines in Nebraska
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Permanent disability | 1 |
| Days away from work or restricted activity | 34 |
| No lost time, or an occupational illness | 33 |
What the accident reports at stone mines in Nebraska describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 22 |
| Handtools (nonpowered) | 11 |
| Slip or fall of person | 10 |
| Machinery | 10 |
| Disorders (physical agents) | 5 |
| Powered haulage | 4 |
| Inundation | 3 |
| Fall of roof or back | 3 |
| Falling/sliding/rolling materials | 1 |
| Occupational skin diseases | 1 |
Equipment named in accident reports at stone mines in Nebraska
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 11 |
| Blow pipe | 4 |
| Hand tools (powered) | 3 |
| Front-end loader | 3 |
| Ore haulage trucks - off highway trucks | 3 |
| Milling machinery | 2 |
| Shovel | 2 |
| Trucks | 2 |
| Pneumatic blasting agent loader | 2 |
| Elevator | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. 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.