Data / Mines / Missouri / Randolph Deep Mine
Randolph Deep Mine, Clay County, Missouri: 93 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Randolph Deep Mine is an active crushed, broken limestone underground mine in Clay County, Missouri, operated by Hunt Martin Materials L.L.C. with 103 employees on MSHA's record (mine ID 2302308). Since January 1, 2022 MSHA inspectors issued 93 citations and orders there with $67,917 in proposed penalties, and 11 accident reports were filed there, with 10 injury or illness cases, 1 of them fatal.
The request: Watch Randolph Deep Mine (MSHA mine ID 2302308) 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
- 2302308
- Status
- Active since March 10, 2005
- Main commodity
- Crushed, broken limestone
- Mine type
- Underground
- County
- Clay County, Missouri
- Nearest town
- Randolph
- Operator
- Hunt Martin Materials L.L.C.
- Parent company
- Martin Marietta Materials Inc
- Employees
- 103
- MSHA field office
- Rolla MO Field Office
- Citations and orders since January 1, 2022
- 93
- Significant and substantial
- 14 (15.1%)
- Closure orders
- 3
- High negligence or reckless
- 1
- Proposed penalties
- $67,917
- Amount paid so far
- $53,460
- Inspections
- 33
- Inspector hours on site
- 718
- Citations per inspection
- 2.82 (all mines 2.30)
- Accident reports
- 11
- Injury and illness cases
- 10
- Fatalities
- 1
- Latest MSHA record
- October 29, 2026
- Citations issued to contractors here
- 5 ($970 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 | 23 | 4 | $10,529 | 1 |
| 2023 | 17 | 3 | $43,323 | 4 |
| 2024 | 15 | 4 | $5,018 | 4 |
| 2025 | 15 | 2 | $5,321 | 1 |
| 2026 | 23 | 1 | $3,726 | 0 |
Standards cited most at Randolph Deep Mine
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 57.3200 | Underground metal and nonmetal mines | 17 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 8 |
| 30 CFR 57.20003 | Underground metal and nonmetal mines | 5 |
| 30 CFR 57.14107 | Underground metal and nonmetal mines | 4 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 4 |
| 30 CFR 57.12004 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.6202 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.14112 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.12032 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.4102 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.12018 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.16006 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.4104 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.13001 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.14109 | Underground metal and nonmetal mines | 2 |
Injury and illness cases at Randolph Deep Mine
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 1 |
| Days away from work or restricted activity | 7 |
| No lost time, or an occupational illness | 2 |
What the accident reports at Randolph Deep Mine describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 4 |
| Handling of materials | 3 |
| Handtools (nonpowered) | 2 |
| Machinery | 1 |
| Fire | 1 |
Equipment named in accident reports at Randolph Deep Mine
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 2 |
| Hand tools (powered) | 1 |
| Ore haulage trucks - off highway trucks | 1 |
Other open mines in Clay County, Missouri
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Mosby Quarry | Ideker Mining LLC | Clay County, MO | Crushed, broken limestone | 15 | 88 |
| 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.