Key Takeaway
Warren Quarry is a active surface mine producing Stone, located in Warren, Carbon County, MT. It has 133 violations on record (23 S&S) and $18K in proposed penalties. Operated by Montana Limestone Company.
Warren Quarry
Operator: Montana Limestone Company
Controller: Basin Electric Power Cooperative
Location: Warren, Carbon County, MT
Employees: 17
Recent Violations
View all 133 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 12/16/2025 | 56.15001 | Non-S&S | LowNegligence | $151 |
| 08/12/2025 | 56.4201(a)(2) | Non-S&S | LowNegligence | $151 |
| 10/23/2024 | 56.12002 | Non-S&S | ModNegligence | $147 |
| 08/28/2024 | 47.44(b) | Non-S&S | ModNegligence | $147 |
| 08/28/2024 | 56.12028 | Non-S&S | ModNegligence | $147 |
| 08/28/2024 | 56.12018 | Non-S&S | ModNegligence | $147 |
| 03/12/2024 | 56.14207 | Non-S&S | ModNegligence | $147 |
| 03/12/2024 | 56.14107(a) | S&S | ModNegligence | $204 |
| 03/12/2024 | 56.11001 | S&S | ModNegligence | $147 |
| 03/12/2024 | 56.14107(a) | Non-S&S | ModNegligence | $147 |
| 03/12/2024 | 56.12032 | Non-S&S | ModNegligence | $147 |
| 03/12/2024 | 56.14107(a) | Non-S&S | ModNegligence | $147 |
| 08/10/2022 | 56.12004 | Non-S&S | ModNegligence | $133 |
| 08/09/2022 | 56.9300(b) | S&S | ModNegligence | $183 |
| 02/02/2022 | 56.11001 | S&S | ModNegligence | $407 |
| 08/25/2021 | 56.16009 | Non-S&S | LowNegligence | $125 |
| 01/13/2021 | 56.11012 | Non-S&S | ModNegligence | $125 |
| 10/25/2017 | 56.14101(a)(2) | S&S | LowNegligence | $116 |
| 10/25/2017 | 56.4201(a)(2) | Non-S&S | LowNegligence | $116 |
| 02/28/2017 | 56.20003(a) | Non-S&S | ModNegligence | $116 |
Accidents & Injuries
View all 22 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 09/27/2022 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 14d lost |
| 01/27/2022 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 1d lost, 4d restricted |
| 08/29/2019 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 12d lost |
| 07/30/2019 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 91d lost, 36d restricted |
| 12/19/2018 | ALL OTHER OCCUPATIONAL ILLNESSES | OCCUPATNAL ILLNESS NOT DEG 1-6 | None |
| 06/01/2018 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/08/2018 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 222d lost, 33d restricted |
| 02/20/2018 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 01/19/2018 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 178d lost, 17d restricted |
| 03/07/2017 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 5d lost |
Inspections
View all 61 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 12/16/2025 | 12/19/2025 | 30.50 | 1 |
| 08/11/2025 | 08/12/2025 | 20.00 | 1 |
| 10/23/2024 | 10/24/2024 | 20.50 | 1 |
| 08/27/2024 | 08/28/2024 | 19.25 | 1 |
| 03/11/2024 | 03/14/2024 | 43.00 | 1 |
| 07/19/2023 | 07/21/2023 | 19.25 | 1 |
| 03/08/2023 | 03/09/2023 | 28.50 | 2 |
| 08/09/2022 | 08/11/2022 | 30.75 | 2 |
| 01/31/2022 | 02/03/2022 | 21.50 | 1 |
| 08/25/2021 | 08/25/2021 | 11.50 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Warren Quarry have?
Warren Quarry has 133 MSHA violations on record, of which 23 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $18K.
What type of mine is Warren Quarry?
Warren Quarry is a Surface mine producing Stone, located in Warren, Carbon County, MT. It currently has 17 employees.
Has anyone been injured or killed at Warren Quarry?
According to MSHA records, Warren Quarry has 22 reported accident/injury records and 0 fatalities on file.
Who operates Warren Quarry?
Warren Quarry is operated by Montana Limestone Company and controlled by Basin Electric Power Cooperative. MSHA Mine ID: 2402306.