Key Takeaway
Tonasket Quarry is a active surface mine producing Stone, located in Tonasket, Okanogan County, WA. It has 241 violations on record (60 S&S) and $73K in proposed penalties. Operated by Pacific Calcium Inc.
Tonasket Quarry
Operator: Pacific Calcium Inc
Controller: MacDonald Development Corporation
Location: Tonasket, Okanogan County, WA
Employees: 22
Recent Violations
View all 241 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 11/19/2025 | 56.13015(a) | Non-S&S | LowNegligence | $151 |
| 11/18/2025 | 56.4101 | Non-S&S | ModNegligence | $151 |
| 11/18/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 11/18/2025 | 56.14100(b) | Non-S&S | ModNegligence | $226 |
| 07/16/2025 | 50.30(a) | Non-S&S | ModNegligence | $151 |
| 06/25/2025 | 56.11001 | Non-S&S | ModNegligence | $151 |
| 06/25/2025 | 56.4101 | Non-S&S | LowNegligence | $151 |
| 06/25/2025 | 56.12018 | Non-S&S | LowNegligence | $151 |
| 06/25/2025 | 56.9300(b) | Non-S&S | ModNegligence | $193 |
| 06/17/2025 | 56.12004 | Non-S&S | LowNegligence | $151 |
| 06/17/2025 | 56.12004 | S&S | ModNegligence | $336 |
| 06/17/2025 | 56.14205 | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 56.14205 | S&S | ModNegligence | $1,126 |
| 06/10/2025 | 56.14100(c) | S&S | HighNegligence | $3,736 |
| 06/10/2025 | 56.18002(b) | Non-S&S | ModNegligence | $151 |
| 06/10/2025 | 46.7(a) | S&S | ModNegligence | $1,252 |
| 01/29/2025 | 56.12002 | Non-S&S | ModNegligence | $151 |
| 01/29/2025 | 56.11001 | S&S | ModNegligence | $151 |
| 07/30/2024 | 56.12002 | Non-S&S | LowNegligence | $147 |
| 07/30/2024 | 56.12004 | S&S | LowNegligence | $147 |
Accidents & Injuries
View all 45 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 06/10/2025 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | None |
| 03/03/2025 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 1d lost, 20d restricted |
| 01/24/2024 | STEPPING OR KNEELING ON OBJECT | DAYS AWAY FROM WORK ONLY | 6d lost |
| 09/22/2023 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 189d lost |
| 03/22/2023 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 27d lost, 12d restricted |
| 02/06/2023 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 1d lost, 11d restricted |
| 08/30/2022 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 03/14/2022 | MACHINERY | PERM TOT OR PERM PRTL DISABLTY | 6d lost, 252d restricted |
| 02/17/2022 | OTHER | DAYS AWAY FROM WORK ONLY | 1d lost |
| 09/30/2021 | FIRE | ACCIDENT ONLY | None |
Inspections
View all 68 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/17/2025 | 11/28/2025 | 69.75 | 2 |
| 07/21/2025 | 07/28/2025 | 27.75 | 2 |
| 06/17/2025 | 06/26/2025 | 64.50 | 2 |
| 06/10/2025 | 07/07/2025 | 67.25 | 2 |
| 01/28/2025 | 01/30/2025 | 33.50 | 1 |
| 07/29/2024 | 07/31/2024 | 24.25 | 1 |
| 03/21/2024 | 04/04/2024 | 42.50 | 1 |
| 07/26/2023 | 07/26/2023 | 0.25 | 1 |
| 07/24/2023 | 07/27/2023 | 25.00 | 1 |
| 10/31/2022 | 11/03/2022 | 37.75 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Tonasket Quarry have?
Tonasket Quarry has 241 MSHA violations on record, of which 60 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $73K.
What type of mine is Tonasket Quarry?
Tonasket Quarry is a Surface mine producing Stone, located in Tonasket, Okanogan County, WA. It currently has 22 employees.
Has anyone been injured or killed at Tonasket Quarry?
According to MSHA records, Tonasket Quarry has 45 reported accident/injury records and 0 fatalities on file.
Who operates Tonasket Quarry?
Tonasket Quarry is operated by Pacific Calcium Inc and controlled by MacDonald Development Corporation. MSHA Mine ID: 4500191.