COLONY WEST MILL
Active
Facility
Nonmetal
Operator: American Colloid Company
Controller: Minerals Technologies Inc
Location: Colony, Crook County, WY
Employees: 30
237
Violations
45
S&S Violations
78
Accidents
$98K
Penalties
Recent Violations
View all 237 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 02/03/2026 | 56.4201(a)(1) | Non-S&S | ModNegligence | $0 |
| 02/03/2026 | 56.16004 | Non-S&S | ModNegligence | $0 |
| 02/05/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 02/05/2025 | 56.14100(b) | S&S | ModNegligence | $642 |
| 02/05/2025 | 47.41(a) | Non-S&S | ModNegligence | $151 |
| 05/01/2024 | 47.41(a)(1) | Non-S&S | ModNegligence | $147 |
| 05/01/2024 | 56.4402 | Non-S&S | ModNegligence | $147 |
| 02/26/2024 | 56.14130(i) | S&S | HighNegligence | $2,862 |
| 02/26/2024 | 56.4201(a)(1) | Non-S&S | ModNegligence | $147 |
| 02/26/2024 | 56.14100(a) | Non-S&S | ModNegligence | $147 |
| 08/22/2023 | 56.14107(a) | S&S | LowNegligence | $143 |
| 08/22/2023 | 56.14213(a) | S&S | ModNegligence | $221 |
| 08/22/2023 | 56.15004 | S&S | ModNegligence | $221 |
| 03/23/2023 | 56.14100(b) | Non-S&S | ModNegligence | $143 |
| 07/12/2022 | 56.4201(a)(2) | Non-S&S | ModNegligence | $133 |
| 07/12/2022 | 56.12030 | Non-S&S | ModNegligence | $133 |
| 03/18/2021 | 56.4102 | Non-S&S | LowNegligence | $125 |
| 03/18/2021 | 56.12030 | Non-S&S | LowNegligence | $125 |
| 03/17/2021 | 56.12032 | Non-S&S | LowNegligence | $125 |
| 04/28/2020 | 56.11001 | Non-S&S | LowNegligence | $217 |
Accidents & Injuries
View all 78 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 09/26/2025 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 01/27/2025 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 58d restricted |
| 06/27/2024 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 58d lost |
| 04/16/2024 | DISORDERS (REPEATED TRAUMA) | OCCUPATNAL ILLNESS NOT DEG 1-6 | None |
| 06/02/2022 | SLIP OR FALL OF PERSON | ALL OTHER CASES (INCL 1ST AID) | None |
| 01/13/2020 | OTHER | DYS AWY FRM WRK & RESTRCTD ACT | 16d lost, 11d restricted |
| 05/11/2018 | STRIKING OR BUMPING | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/25/2017 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 10d restricted |
| 08/23/2017 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 59d restricted |
| 12/26/2016 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 3d restricted |
Inspections
View all 83 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/02/2026 | 02/04/2026 | 20.00 | 1 |
| 08/25/2025 | 08/29/2025 | 22.00 | 1 |
| 02/05/2025 | 02/24/2025 | 24.00 | 1 |
| 05/22/2024 | 05/22/2024 | 1.50 | 1 |
| 05/01/2024 | 05/06/2024 | 14.00 | 1 |
| 02/26/2024 | 02/29/2024 | 19.00 | 1 |
| 08/21/2023 | 08/24/2023 | 25.50 | 1 |
| 05/17/2023 | 05/17/2023 | 3.50 | 1 |
| 03/17/2023 | 03/27/2023 | 25.50 | 1 |
| 07/10/2022 | 07/13/2022 | 25.50 | 1 |
Mine Details
MSHA Mine ID4800245
Mine TypeFacility
StatusActive
CommodityNonmetal
SIC DescriptionBentonite
Employees30
Days/Week7.0
Hours/Shift12.0
Coordinates44.8697220, -104.1600000
Nearest TownColony
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Frequently Asked Questions
How many MSHA violations does COLONY WEST MILL have?
COLONY WEST MILL has 237 MSHA violations on record, of which 45 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $98K.
What type of mine is COLONY WEST MILL?
COLONY WEST MILL is a Facility mine producing Nonmetal, located in Colony, Crook County, WY. It currently has 30 employees.
Has anyone been injured or killed at COLONY WEST MILL?
According to MSHA records, COLONY WEST MILL has 78 reported accident/injury records and 0 fatalities on file.
Who operates COLONY WEST MILL?
COLONY WEST MILL is operated by American Colloid Company and controlled by Minerals Technologies Inc. MSHA Mine ID: 4800245.