Data / Mines / Missouri / Millersburg Quarry
Millersburg Quarry: 2 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Millersburg Quarry is an intermittent crushed, broken limestone surface mine in Callaway County, Missouri, operated by Martin Marietta Materials, Inc. with 2 employees on MSHA's record (mine ID 2300160). Since January 1, 2022 MSHA inspectors issued 2 citations and orders there with $302 in proposed penalties, and 1 accident report was filed there, with 1 injury or illness case.
The request: Watch Millersburg Quarry (MSHA mine ID 2300160) in Callaway County, Missouri: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 2300160
- Status
- Intermittent since February 1, 2022
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Callaway County, Missouri
- Nearest town
- Millersburg
- Operator
- Martin Marietta Materials, Inc.
- Parent company
- Martin Marietta Materials Inc
- Employees
- 2
- MSHA field office
- Rolla MO Field Office
- Citations and orders since January 1, 2022
- 2
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $302
- Amount paid so far
- $302
- Inspections
- 5
- Inspector hours on site
- 47
- Citations per inspection
- 0.40 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- April 2, 2026
- Citations issued to contractors here
- 10 ($1,478 proposed)
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 |
|---|---|---|---|---|
| 2024 | 0 | 0 | $0 | 1 |
| 2026 | 2 | 0 | $302 | 0 |
Standards cited most at Millersburg Quarry
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 56.12032 | Surface metal and nonmetal mines | 2 |
Injury and illness cases at Millersburg Quarry
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
What the accident reports at Millersburg Quarry describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Stepping or kneeling on object | 1 |
Equipment named in accident reports at Millersburg Quarry
| Equipment | Reports |
|---|---|
| Crusher | 1 |
Other open mines in Callaway County, Missouri
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Mid MO Mining LLC | Mid Mo Mining LLC | Callaway County, MO | Fire clay | 11 | 32 |
| Hermann Sand-Jefferson City Plant | Hermann Sand & Gravel Inc | Callaway County, MO | Sand, industrial | 1 | 24 |
| Auxvasse South Quarry | Martin Marietta Materials, Inc. | Callaway County, MO | Crushed, broken limestone | 9 | 18 |
| Jefferson City Plant | Capital Sand Company, Inc. | Callaway County, MO | Sand, common | 5 | 12 |
| Fischer Minerals LLC | Fischer Minerals LLC | Callaway County, MO | Construction sand and gravel | 2 | 7 |
| Dooling Quarries Holts Summit | Dooling Quarries LLC | Callaway County, MO | Crushed, broken limestone | 2 | 4 |
| Dredge #6060 (Kathy Lee) | Capital Sand Company, Inc. | Callaway County, MO | Construction sand and gravel | 5 | 3 |
| Dredge #6050 (Rae Marie) | Capital Sand Company, Inc. | Callaway County, MO | Sand, common | 3 | 2 |
| Whetstone | Fischer Minerals LLC | Callaway County, MO | Crushed, broken limestone | 5 | 0 |
| Dredge #6030 (Sandy Kay) | Capital Sand Company, Inc. | Callaway County, MO | Sand, industrial | 3 | 0 |
| Reform Quarry | Martin Marietta Materials, Inc. | Callaway County, MO | Crushed, broken limestone | 1 | 0 |
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.