Data / Mines / Kansas / Johnson County
Mines in Johnson County, Kansas: 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 Johnson County, Kansas, run by 4 operators and employing 105 people. Since January 1, 2022 its inspectors issued 128 citations and orders there with $33,046 in proposed penalties, and operators reported 8 injury or illness cases. The operators with the most open mines are Martin Marietta Materials, Inc.; Holliday Sand & Gravel Company, Inc.; Mid-States Materials, LLC. Data from MSHA, November 6, 2026.
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- Open mines
- 8
- Operators
- 4
- Employees
- 105
- Active
- 6
- Intermittent
- 2
- Citations and orders since January 1, 2022
- 128
- Significant and substantial
- 20 (15.6%)
- Closure orders
- 2
- High negligence or reckless
- 1
- Proposed penalties
- $33,046
- Amount paid so far
- $29,284
- Inspections
- 85
- Inspector hours on site
- 753
- Citations per inspection
- 1.51 (all mines 2.30)
- Accident reports
- 8
- Injury and illness cases
- 8
- Fatalities
- 0
- Latest MSHA record
- October 14, 2026
Operators with the most open mines in Johnson County, Kansas
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 | 24 | 36 | $6,238 | 1 |
| Holliday Sand & Gravel Company, Inc. | 2 | 49 | 55 | $15,923 | 5 |
| Mid-States Materials, LLC | 2 | 17 | 18 | $5,518 | 2 |
| Hunt Martin Materials L.L.C. | 1 | 15 | 19 | $5,367 | 0 |
Operators with the most citations in Johnson County, Kansas
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Holliday Sand & Gravel Company, Inc. | 2 | 49 | 55 | $15,923 | 5 |
| Martin Marietta Materials, Inc. | 3 | 24 | 36 | $6,238 | 1 |
| Hunt Martin Materials L.L.C. | 1 | 15 | 19 | $5,367 | 0 |
| Mid-States Materials, LLC | 2 | 17 | 18 | $5,518 | 2 |
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 |
|---|---|---|---|---|---|
| Shawnee-Plant #2 | Holliday Sand & Gravel Company, Inc. | Johnson County, KS | Construction sand and gravel | 19 | 31 |
| Olathe Quarry | Martin Marietta Materials, Inc. | Johnson County, KS | Crushed, broken limestone | 12 | 26 |
| Johnson County Aggregates | Holliday Sand & Gravel Company, Inc. | Johnson County, KS | Crushed, broken limestone | 30 | 24 |
| Sunflower Quarry | Hunt Martin Materials L.L.C. | Johnson County, KS | Crushed, broken limestone | 15 | 19 |
| Edgerton Quarry | Mid-States Materials, LLC | Johnson County, KS | Dimension limestone | 14 | 13 |
| De Soto Sand | Martin Marietta Materials, Inc. | Johnson County, KS | Construction sand and gravel | 4 | 7 |
| Portable Crusher #6 | Mid-States Materials, LLC | Johnson County, KS | Crushed, broken limestone | 3 | 5 |
| Lone Elm Quarry | Martin Marietta Materials, Inc. | Johnson County, KS | Crushed, broken limestone | 8 | 3 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken limestone | 5 | 62.5% |
| Construction sand and gravel | 2 | 25% |
| Dimension limestone | 1 | 12.5% |
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 | 31 | 5 | $10,197 | 1 |
| 2023 | 35 | 10 | $12,410 | 0 |
| 2024 | 2 | 0 | $294 | 2 |
| 2025 | 29 | 2 | $7,333 | 2 |
| 2026 | 31 | 3 | $2,812 | 3 |
Standards cited most at mines in Johnson County, Kansas
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 56.14100 | Surface metal and nonmetal mines | 19 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 11 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14109 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 3 |
| 30 CFR 47.41 | Hazard communication | 3 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 3 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 3 |
Injury and illness cases at mines in Johnson County, Kansas
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 4 |
| No lost time, or an occupational illness | 4 |
What the accident reports at mines in Johnson County, Kansas describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handtools (nonpowered) | 4 |
| Handling of materials | 2 |
| Slip or fall of person | 2 |
Equipment named in accident reports at mines in Johnson County, Kansas
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 4 |
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.