Data / Mines / Missouri / Mosby Quarry
Mosby Quarry, Clay County, Missouri: 88 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Mosby Quarry is an active crushed, broken limestone underground mine in Clay County, Missouri, operated by Ideker Mining LLC with 15 employees on MSHA's record (mine ID 2302447). Since January 1, 2022 MSHA inspectors issued 88 citations and orders there with $26,969 in proposed penalties, and 3 accident reports were filed there, with 2 injury or illness cases.
The request: Watch Mosby Quarry (MSHA mine ID 2302447) in Clay County, Missouri: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 2302447
- Status
- Active since October 26, 2015
- Main commodity
- Crushed, broken limestone
- Mine type
- Underground
- County
- Clay County, Missouri
- Nearest town
- Mosby
- Operator
- Ideker Mining LLC
- Employees
- 15
- MSHA field office
- Rolla MO Field Office
- Citations and orders since January 1, 2022
- 88
- Significant and substantial
- 13 (14.8%)
- Closure orders
- 3
- High negligence or reckless
- 15
- Proposed penalties
- $26,969
- Amount paid so far
- $22,922
- Inspections
- 48
- Inspector hours on site
- 402
- Citations per inspection
- 1.83 (all mines 2.30)
- Accident reports
- 3
- Injury and illness cases
- 2
- Fatalities
- 0
- Latest MSHA record
- October 26, 2026
- Citations issued to contractors here
- 17 ($33,823 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 |
|---|---|---|---|---|
| 2022 | 4 | 0 | $532 | 1 |
| 2023 | 17 | 3 | $8,118 | 0 |
| 2024 | 31 | 3 | $8,759 | 0 |
| 2025 | 16 | 2 | $2,645 | 0 |
| 2026 | 20 | 5 | $6,915 | 1 |
Standards cited most at Mosby 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 57.14107 | Underground metal and nonmetal mines | 12 |
| 30 CFR 57.3200 | Underground metal and nonmetal mines | 6 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 6 |
| 30 CFR 57.14112 | Underground metal and nonmetal mines | 4 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 4 |
| 30 CFR 57.20003 | Underground metal and nonmetal mines | 2 |
| 30 CFR 47.41 | Hazard communication | 2 |
| 30 CFR 48.9 | Training of miners | 2 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.18002 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.12004 | Underground metal and nonmetal mines | 2 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 2 |
| 30 CFR 57.4101 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.14207 | Underground metal and nonmetal mines | 2 |
| 30 CFR 49.6 | Mine rescue teams | 1 |
Injury and illness cases at Mosby Quarry
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
| No lost time, or an occupational illness | 1 |
What the accident reports at Mosby Quarry describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Fall of roof or back | 2 |
| Handling of materials | 1 |
Equipment named in accident reports at Mosby Quarry
| Equipment | Reports |
|---|---|
| Ore haulage trucks - off highway trucks | 1 |
Other open mines in Clay County, Missouri
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Randolph Deep Mine | Hunt Martin Materials L.L.C. | Clay County, MO | Crushed, broken limestone | 103 | 93 |
| Liberty Aggregates LLC | Liberty Aggregates LLC | Clay County, MO | Crushed, broken limestone | 16 | 82 |
| Plant #22 Missouri City | Capital Sand Company, Inc. | Clay County, MO | Sand, common | 5 | 15 |
| Randolph Plant #9 | Holliday Sand & Gravel Company, Inc. | Clay County, MO | Sand, industrial | 14 | 11 |
| Randolph Dredge | Holliday Sand & Gravel Company, Inc. | Clay County, MO | Construction sand and gravel | 6 | 3 |
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.