Data / Mines / Missouri / Antonia (CS56)
Antonia (CS56): 10 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Antonia (CS56) is an active crushed, broken limestone surface mine in Jefferson County, Missouri, operated by Central Stone Company with 10 employees on MSHA's record (mine ID 2301957). Since January 1, 2022 MSHA inspectors issued 10 citations and orders there with $1,772 in proposed penalties, and 2 accident reports were filed there, with 2 injury or illness cases.
The request: Watch Antonia (CS56) (MSHA mine ID 2301957) in Jefferson County, Missouri: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 2301957
- Status
- Active since October 1, 2013
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Jefferson County, Missouri
- Nearest town
- Antonia
- Operator
- Central Stone Company
- Parent company
- Riverstone Group
- Employees
- 10
- MSHA field office
- Litchfield IL Field Office
- Citations and orders since January 1, 2022
- 10
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $1,772
- Amount paid so far
- $1,772
- Inspections
- 11
- Inspector hours on site
- 89
- Citations per inspection
- 0.91 (all mines 2.30)
- Accident reports
- 2
- Injury and illness cases
- 2
- Fatalities
- 0
- Latest MSHA record
- June 1, 2026
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 | 0 | 0 | $0 | 1 |
| 2023 | 6 | 0 | $858 | 1 |
| 2024 | 1 | 0 | $147 | 0 |
| 2025 | 2 | 0 | $616 | 0 |
| 2026 | 1 | 0 | $151 | 0 |
Standards cited most at Antonia (CS56)
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 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4501 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14131 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Antonia (CS56)
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| No lost time, or an occupational illness | 2 |
What the accident reports at Antonia (CS56) describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 2 |
Other open mines in Jefferson County, Missouri
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Selma Plant Quarry & Mill | River Cement Company DBA Buzzi Unicem USA | Jefferson County, MO | Cement | 150 | 324 |
| Barnhart Quarry | Martin Marietta Materials, Inc. | Jefferson County, MO | Crushed, broken limestone | 32 | 43 |
| Antire Quarry (CS-72) | Central Stone Company | Jefferson County, MO | Crushed, broken limestone | 25 | 27 |
| BMC Sand Eureka Plant | BMC Sand LLC | Jefferson County, MO | Construction sand and gravel | 4 | 19 |
| Cedar Springs Quarry | Arch Johnston Paving & Quarry Company Inc | Jefferson County, MO | Crushed, broken limestone | 17 | 18 |
| Pevely Plant | Covia Solutions LLC | Jefferson County, MO | Sand, industrial | 10 | 16 |
| Trautman Quarry (CS-74) | Central Stone Company | Jefferson County, MO | Crushed, broken limestone | 8 | 10 |
| House Springs Quarry (CS-73) | Central Stone Company | Jefferson County, MO | Crushed, broken limestone | 5 | 10 |
| Festus Underground | Fred Weber, Inc. | Jefferson County, MO | Sand, industrial | 1 | 7 |
| Fast Pack 2 Portable 2 | Martin Marietta Materials, Inc. | Jefferson County, MO | Crushed, broken limestone | 15 | 6 |
| Plant 5 / Smreker Supply | H Sand & Gravel | Jefferson County, MO | Sand, industrial | 4 | 4 |
| H Sand & Gravel | H Sand & Gravel | Jefferson County, MO | Construction sand and gravel | 9 | 3 |
| South Portable Plant | Martin Marietta Materials, Inc. | Jefferson County, MO | Crushed, broken limestone | 5 | 2 |
| Morse Mill Quarry #60 | Central Stone Company | Jefferson County, MO | Crushed, broken limestone | 5 | 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.