Data / Mines / Missouri / Lincoln County
Mines in Lincoln County, Missouri: 11 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 11 open mines in Lincoln County, Missouri, run by 6 operators and employing 64 people. Since January 1, 2022 its inspectors issued 256 citations and orders there with $77,755 in proposed penalties, and operators reported 17 injury or illness cases. The operators with the most open mines are Magruder Limestone Co Inc; Martin Marietta Materials, Inc.; Old Monroe Materials, LLC. Data from MSHA, November 6, 2026.
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- Open mines
- 11
- Operators
- 6
- Employees
- 64
- Active
- 9
- Intermittent
- 2
- Citations and orders since January 1, 2022
- 256
- Significant and substantial
- 33 (12.9%)
- Closure orders
- 3
- High negligence or reckless
- 15
- Proposed penalties
- $77,755
- Amount paid so far
- $62,053
- Inspections
- 137
- Inspector hours on site
- 920
- Citations per inspection
- 1.87 (all mines 2.30)
- Accident reports
- 17
- Injury and illness cases
- 17
- Fatalities
- 0
- Latest MSHA record
- October 22, 2026
Operators with the most open mines in Lincoln County, Missouri
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 |
|---|---|---|---|---|---|
| Magruder Limestone Co Inc | 5 | 32 | 98 | $17,970 | 14 |
| Martin Marietta Materials, Inc. | 2 | 13 | 79 | $32,336 | 2 |
| Old Monroe Materials, LLC | 1 | 3 | 29 | $17,686 | 0 |
| BMC Sand LLC | 1 | 4 | 24 | $6,041 | 0 |
| Kimaterials | 1 | 7 | 17 | $2,407 | 0 |
| Central Stone Company | 1 | 5 | 9 | $1,315 | 1 |
Operators with the most citations in Lincoln County, Missouri
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Magruder Limestone Co Inc | 5 | 32 | 98 | $17,970 | 14 |
| Martin Marietta Materials, Inc. | 2 | 13 | 79 | $32,336 | 2 |
| Old Monroe Materials, LLC | 1 | 3 | 29 | $17,686 | 0 |
| BMC Sand LLC | 1 | 4 | 24 | $6,041 | 0 |
| Kimaterials | 1 | 7 | 17 | $2,407 | 0 |
| Central Stone Company | 1 | 5 | 9 | $1,315 | 1 |
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 |
|---|---|---|---|---|---|
| Magruder Limestone-Troy Quarry | Magruder Limestone Co Inc | Lincoln County, MO | Crushed, broken limestone | 15 | 50 |
| Troy West Quarry | Martin Marietta Materials, Inc. | Lincoln County, MO | Crushed, broken limestone | 5 | 41 |
| Tory East Quarry | Martin Marietta Materials, Inc. | Lincoln County, MO | Crushed, broken limestone | 8 | 38 |
| Old Monroe Materials, LLC | Old Monroe Materials, LLC | Lincoln County, MO | Construction sand and gravel | 3 | 29 |
| BMC Sand, Old Monroe | BMC Sand LLC | Lincoln County, MO | Sand, industrial | 4 | 24 |
| Foley Quarry | Magruder Limestone Co Inc | Lincoln County, MO | Crushed, broken limestone | 4 | 22 |
| Kimaterials Incorporated | Kimaterials | Lincoln County, MO | Construction sand and gravel | 7 | 17 |
| Irock Port #2 | Magruder Limestone Co Inc | Lincoln County, MO | Crushed, broken limestone | 8 | 16 |
| Moscow Mills Plant CS57 | Central Stone Company | Lincoln County, MO | Crushed, broken limestone | 5 | 9 |
| Irock #3 | Magruder Limestone Co Inc | Lincoln County, MO | Crushed, broken limestone | 4 | 6 |
| Irock #4 | Magruder Limestone Co Inc | Lincoln County, MO | Crushed, broken limestone | 1 | 4 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken limestone | 8 | 72.7% |
| Construction sand and gravel | 2 | 18.2% |
| Sand, industrial | 1 | 9.1% |
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 | 60 | 4 | $13,200 | 2 |
| 2023 | 49 | 4 | $11,773 | 1 |
| 2024 | 35 | 3 | $16,722 | 5 |
| 2025 | 59 | 8 | $14,021 | 3 |
| 2026 | 53 | 14 | $22,039 | 6 |
Standards cited most at mines in Lincoln County, Missouri
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 | 28 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 22 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 15 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 11 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 9 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.4200 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14130 | Surface metal and nonmetal mines | 5 |
Injury and illness cases at mines in Lincoln County, Missouri
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 10 |
| No lost time, or an occupational illness | 7 |
What the accident reports at mines in Lincoln County, Missouri describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 7 |
| Disorders (repeated trauma) | 3 |
| Handtools (nonpowered) | 2 |
| Handling of materials | 2 |
| Powered haulage | 2 |
| Machinery | 1 |
Equipment named in accident reports at mines in Lincoln County, Missouri
| Equipment | Reports |
|---|---|
| Front-end loader | 3 |
| Hand tools (not powered) | 2 |
| Conveyor | 1 |
| Ore haulage trucks - off highway trucks | 1 |
| Hand tools (powered) | 1 |
| Carriage-mounted drills | 1 |
| Forklift | 1 |
| Screen | 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.