Randolph Deep Mine
Active
Underground
Stone
Operator: Martin Marietta Kansas City, LLC
Controller: Martin Marietta Materials Inc
Location: Randolph, Clay County, MO
Employees: 103
412
Violations
113
S&S Violations
34
Accidents
$178K
Penalties
Recent Violations
View all 412 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 01/28/2026 | 57.20011 | S&S | LowNegligence | $0 |
| 01/07/2026 | 57.4101 | Non-S&S | ModNegligence | $151 |
| 01/06/2026 | 57.12032 | Non-S&S | LowNegligence | $151 |
| 01/06/2026 | 57.12004 | Non-S&S | ModNegligence | $151 |
| 01/06/2026 | 57.11053(a) | Non-S&S | ModNegligence | $151 |
| 01/06/2026 | 57.12008 | Non-S&S | ModNegligence | $151 |
| 01/06/2026 | 57.14103(b) | Non-S&S | ModNegligence | $151 |
| 12/09/2025 | 57.3200 | Non-S&S | ModNegligence | $151 |
| 12/09/2025 | 57.3200 | S&S | ModNegligence | $2,133 |
| 12/09/2025 | 57.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 12/08/2025 | 57.12028 | Non-S&S | LowNegligence | $151 |
| 12/08/2025 | 57.3200 | S&S | ModNegligence | $959 |
| 12/08/2025 | 57.4201(a)(1) | Non-S&S | ModNegligence | $151 |
| 12/08/2025 | 57.14100(b) | Non-S&S | ModNegligence | $193 |
| 12/08/2025 | 57.12032 | Non-S&S | LowNegligence | $151 |
| 12/08/2025 | 57.9301 | Non-S&S | ModNegligence | $432 |
| 10/03/2025 | Non-S&S | $0 | ||
| 05/07/2025 | 57.3200 | Non-S&S | LowNegligence | $151 |
| 05/06/2025 | 57.6202(a)(4) | Non-S&S | ModNegligence | $151 |
| 05/06/2025 | 57.4201(a)(1) | Non-S&S | ModNegligence | $151 |
Accidents & Injuries
View all 34 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 10/03/2025 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | None |
| 12/31/2024 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 10/07/2024 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 02/27/2024 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 02/05/2024 | MACHINERY | DYS AWY FRM WRK & RESTRCTD ACT | 3d lost, 40d restricted |
| 08/31/2023 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 08/24/2023 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 7d restricted |
| 06/05/2023 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 4d lost, 42d restricted |
| 01/30/2023 | SLIP OR FALL OF PERSON | FATALITY | Fatal |
| 06/20/2022 | FIRE | ACCIDENT ONLY | None |
Inspections
View all 181 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 01/05/2026 | 01/08/2026 | 68.25 | 2 |
| 12/07/2025 | 12/11/2025 | 66.75 | 2 |
| 10/03/2025 | 01/30/2026 | 64.25 | 3 |
| 07/28/2025 | 08/07/2025 | 60.00 | 1 |
| 05/06/2025 | 05/14/2025 | 55.50 | 1 |
| 02/03/2025 | 02/25/2025 | 43.50 | 1 |
| 11/04/2024 | 11/20/2024 | 96.00 | 1 |
| 10/28/2024 | 10/29/2024 | 18.50 | 1 |
| 09/03/2024 | 09/05/2024 | 27.50 | 1 |
| 08/27/2024 | 08/27/2024 | 6.50 | 1 |
Mine Details
MSHA Mine ID2302308
Mine TypeUnderground
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Limestone NEC
Employees103
Days/Week5.0
Hours/Shift12.0
Coordinates39.1561110, -94.4947220
Nearest TownRandolph
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Frequently Asked Questions
How many MSHA violations does Randolph Deep Mine have?
Randolph Deep Mine has 412 MSHA violations on record, of which 113 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $178K.
What type of mine is Randolph Deep Mine?
Randolph Deep Mine is a Underground mine producing Stone, located in Randolph, Clay County, MO. It currently has 103 employees.
Has anyone been injured or killed at Randolph Deep Mine?
According to MSHA records, Randolph Deep Mine has 34 reported accident/injury records and 1 fatalities on file.
Who operates Randolph Deep Mine?
Randolph Deep Mine is operated by Martin Marietta Kansas City, LLC and controlled by Martin Marietta Materials Inc. MSHA Mine ID: 2302308.