MONTANA CITY PLANT
Active
Facility
Stone
Operator: Ash Grove Cement Company
Controller: CRH PLC
Location: Helena, Jefferson County, MT
Employees: 80
350
Violations
38
S&S Violations
103
Accidents
$68K
Penalties
Recent Violations
View all 350 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/02/2025 | 56.4200(b)(2) | Non-S&S | LowNegligence | $151 |
| 06/11/2025 | 56.12032 | Non-S&S | ModNegligence | $592 |
| 10/30/2024 | 56.20013 | Non-S&S | LowNegligence | $147 |
| 04/23/2024 | 56.12028 | Non-S&S | ModNegligence | $147 |
| 04/23/2024 | 47.44(b) | Non-S&S | ModNegligence | $147 |
| 04/23/2024 | 56.13021 | Non-S&S | ModNegligence | $147 |
| 04/16/2024 | 56.4402 | Non-S&S | ModNegligence | $147 |
| 04/16/2024 | 56.4102 | Non-S&S | ModNegligence | $147 |
| 12/20/2023 | 56.4201(a)(1) | Non-S&S | ModNegligence | $147 |
| 12/20/2023 | 47.44(b) | Non-S&S | ModNegligence | $147 |
| 12/19/2023 | 56.14100(b) | Non-S&S | ModNegligence | $147 |
| 12/19/2023 | 56.14132(b)(1)(i) | Non-S&S | ModNegligence | $147 |
| 09/06/2023 | 56.14112(b) | Non-S&S | ModNegligence | $143 |
| 11/22/2022 | 56.4201(a)(1) | Non-S&S | ModNegligence | $215 |
| 06/08/2022 | 56.17001 | Non-S&S | ModNegligence | $215 |
| 06/08/2022 | 56.14112(b) | Non-S&S | ModNegligence | $321 |
| 06/08/2022 | 56.4602 | Non-S&S | ModNegligence | $215 |
| 06/07/2022 | 56.20011 | Non-S&S | ModNegligence | $840 |
| 11/04/2021 | 56.4101 | Non-S&S | LowNegligence | $125 |
| 11/02/2021 | 47.41(a) | Non-S&S | ModNegligence | $187 |
Accidents & Injuries
View all 103 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 12/31/2025 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | None |
| 07/31/2025 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 2d restricted |
| 07/07/2025 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 113d restricted |
| 02/24/2025 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 25d restricted |
| 10/01/2024 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 178d restricted |
| 05/21/2024 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
| 02/09/2024 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 131d restricted |
| 09/13/2023 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 12d lost, 24d restricted |
| 03/04/2023 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 10d restricted |
| 01/17/2023 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 14d lost |
Inspections
View all 77 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 10/01/2025 | 10/06/2025 | 34.50 | 2 |
| 07/10/2025 | 07/10/2025 | 1.50 | 1 |
| 06/10/2025 | 06/12/2025 | 41.00 | 2 |
| 10/24/2024 | 10/31/2024 | 21.25 | 1 |
| 10/24/2024 | 11/14/2024 | 3.00 | 1 |
| 04/16/2024 | 04/24/2024 | 42.50 | 3 |
| 12/19/2023 | 12/21/2023 | 41.25 | 2 |
| 09/27/2023 | 09/28/2023 | 12.50 | 1 |
| 09/05/2023 | 09/07/2023 | 29.50 | 2 |
| 05/17/2023 | 05/17/2023 | 1.75 | 1 |
Mine Details
MSHA Mine ID2400015
Mine TypeFacility
StatusActive
CommodityStone
SIC DescriptionCement
Employees80
Days/Week7.0
Hours/Shift12.0
Coordinates46.5497220, -111.9152780
Nearest TownHelena
Related Mines
CHANUTE QUARRY
Chanute, Neosho County, KS
1,496 violations
Active
Louisville Plant Quarry & Mill
Louisville, Cass County, NE
1,440 violations
Active
Foreman Quarry & Plant
Foreman, Little River County, AR
1,391 violations
Active
Seattle Plant
Seattle, King County, WA
1,029 violations
Active
Ash Grove Cement Company
Midlothian, Ellis County, TX
568 violations
Active
Golden Sunlight Mines Inc
Whitehall, Jefferson County, MT
444 violations
Active
Durkee Cement Plant
Durkee, Baker County, OR
427 violations
Active
Leamington Cement Plant
Leamington, Juab County, UT
306 violations
Active
Frequently Asked Questions
How many MSHA violations does MONTANA CITY PLANT have?
MONTANA CITY PLANT has 350 MSHA violations on record, of which 38 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $68K.
What type of mine is MONTANA CITY PLANT?
MONTANA CITY PLANT is a Facility mine producing Stone, located in Helena, Jefferson County, MT. It currently has 80 employees.
Has anyone been injured or killed at MONTANA CITY PLANT?
According to MSHA records, MONTANA CITY PLANT has 103 reported accident/injury records and 0 fatalities on file.
Who operates MONTANA CITY PLANT?
MONTANA CITY PLANT is operated by Ash Grove Cement Company and controlled by CRH PLC. MSHA Mine ID: 2400015.