Key Takeaway
Hamm Lees Summit Quarry is a active surface mine producing Stone, located in Lee's Summit, Jackson County, MO. It has 483 violations on record (179 S&S) and $638K in proposed penalties. Operated by N R Hamm Quarry LLC.
Hamm Lees Summit Quarry
Operator: N R Hamm Quarry LLC
Controller: Summit Materials LLC
Location: Lee's Summit, Jackson County, MO
Employees: 18
Recent Violations
View all 483 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 02/24/2026 | 56.12032 | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.14112(b) | Non-S&S | HighNegligence | $0 |
| 02/24/2026 | 56.14107(a) | Non-S&S | HighNegligence | $0 |
| 02/24/2026 | 56.12013(b) | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.12004 | Non-S&S | ModNegligence | $0 |
| 02/24/2026 | 56.14100(b) | Non-S&S | ModNegligence | $0 |
| 06/17/2025 | 56.14207 | Non-S&S | ModNegligence | $193 |
| 06/16/2025 | 56.14112(b) | Non-S&S | ModNegligence | $151 |
| 06/16/2025 | 56.14112(a) | S&S | ModNegligence | $432 |
| 05/29/2024 | 46.7(a) | Non-S&S | HighNegligence | $1,819 |
| 05/29/2024 | 56.18002(b) | Non-S&S | HighNegligence | $147 |
| 05/29/2024 | 46.9(c)(3) | Non-S&S | HighNegligence | $147 |
| 12/06/2023 | 56.20003(a) | S&S | ModNegligence | $453 |
| 12/05/2023 | 56.14132(a) | Non-S&S | LowNegligence | $147 |
| 12/05/2023 | 56.14100(b) | Non-S&S | LowNegligence | $147 |
| 12/05/2023 | 46.7(a) | Non-S&S | ModNegligence | $227 |
| 10/10/2023 | 56.15005 | S&S | ModNegligence | $407 |
| 10/10/2023 | 56.14205 | S&S | ModNegligence | $407 |
| 09/28/2023 | 56.5001(a)/.5005 | S&S | ModNegligence | $407 |
| 09/28/2023 | 56.5001(a)/.5005 | S&S | ModNegligence | $407 |
Accidents & Injuries
View all 11 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 01/03/2024 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 4d lost, 58d restricted |
| 10/10/2023 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | None |
| 10/11/2022 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 7d restricted |
| 11/20/2021 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 07/17/2021 | POWERED HAULAGE | DAYS AWAY FROM WORK ONLY | None |
| 04/24/2008 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 14d lost |
| 01/31/2007 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 104d lost |
| 09/01/2000 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 11d lost |
| 08/21/2000 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 10d lost |
| 08/15/2000 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 12d lost, 30d restricted |
Inspections
View all 101 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/24/2026 | 02/26/2026 | 6.50 | 1 |
| 02/23/2026 | 02/26/2026 | 21.75 | 1 |
| 06/16/2025 | 06/17/2025 | 32.50 | 2 |
| 02/26/2025 | 02/28/2025 | 14.00 | 1 |
| 05/29/2024 | 05/30/2024 | 10.50 | 1 |
| 12/05/2023 | 12/06/2023 | 26.00 | 1 |
| 10/23/2023 | 10/23/2023 | 7.00 | 1 |
| 10/10/2023 | 10/11/2023 | 7.50 | 1 |
| 09/28/2023 | 09/29/2023 | 23.50 | 1 |
| 09/19/2023 | 09/19/2023 | 6.25 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Hamm Lees Summit Quarry have?
Hamm Lees Summit Quarry has 483 MSHA violations on record, of which 179 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $638K.
What type of mine is Hamm Lees Summit Quarry?
Hamm Lees Summit Quarry is a Surface mine producing Stone, located in Lee's Summit, Jackson County, MO. It currently has 18 employees.
Has anyone been injured or killed at Hamm Lees Summit Quarry?
According to MSHA records, Hamm Lees Summit Quarry has 11 reported accident/injury records and 0 fatalities on file.
Who operates Hamm Lees Summit Quarry?
Hamm Lees Summit Quarry is operated by N R Hamm Quarry LLC and controlled by Summit Materials LLC. MSHA Mine ID: 2301889.