Key Takeaway
SWA @ Mountain Gate Quarry is a active surface mine producing Stone, located in REDDING, Shasta County, CA. It has 218 violations on record (33 S&S) and $45K in proposed penalties. Operated by Stimpel Wiebelhaus Associates, Inc..
SWA @ Mountain Gate Quarry
Operator: Stimpel Wiebelhaus Associates, Inc.
Controller: Corkey Harmon
Location: REDDING, Shasta County, CA
Employees: 8
Recent Violations
View all 218 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 11/03/2025 | 56.14112(b) | Non-S&S | ModNegligence | $151 |
| 11/03/2025 | 56.14112(b) | Non-S&S | ModNegligence | $151 |
| 11/03/2025 | 56.14100(b) | Non-S&S | LowNegligence | $151 |
| 11/03/2025 | 56.14112(b) | Non-S&S | ModNegligence | $151 |
| 04/10/2025 | 47.41(a) | Non-S&S | LowNegligence | $151 |
| 01/16/2025 | 50.30(a) | Non-S&S | LowNegligence | $151 |
| 10/16/2024 | 50.30(a) | Non-S&S | LowNegligence | $147 |
| 06/03/2024 | 50.30(a) | Non-S&S | LowNegligence | $147 |
| 08/16/2023 | 56.12013(c) | Non-S&S | LowNegligence | $143 |
| 08/16/2023 | 56.12004 | Non-S&S | ModNegligence | $143 |
| 11/15/2022 | 56.14107(a) | Non-S&S | ModNegligence | $143 |
| 08/04/2022 | 58.620 | Non-S&S | ModNegligence | $133 |
| 08/04/2022 | 56.9300(b) | S&S | ModNegligence | $378 |
| 08/04/2022 | 56.12028 | Non-S&S | ModNegligence | $133 |
| 08/04/2022 | 56.12028 | Non-S&S | ModNegligence | $133 |
| 08/04/2022 | 56.20011 | Non-S&S | ModNegligence | $133 |
| 08/04/2022 | 56.4102 | Non-S&S | ModNegligence | $133 |
| 04/16/2022 | 50.30(a) | Non-S&S | ModNegligence | $143 |
| 01/26/2022 | 56.14109 | Non-S&S | LowNegligence | $133 |
| 01/26/2022 | 56.14100(c) | Non-S&S | LowNegligence | $133 |
Accidents & Injuries
View all 12 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 03/03/2025 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 15d restricted |
| 11/05/2007 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/09/2006 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/19/2005 | POWERED HAULAGE | DAYS RESTRICTED ACTIVITY ONLY | 9d restricted |
| 06/29/2005 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/20/2005 | POWERED HAULAGE | DAYS RESTRICTED ACTIVITY ONLY | 10d restricted |
| 05/06/2005 | ALL OTHER OCCUPATIONAL ILLNESSES | OCCUPATNAL ILLNESS NOT DEG 1-6 | None |
| 02/10/2005 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 02/02/2005 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/04/2003 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 69 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/03/2025 | 11/06/2025 | 17.25 | 1 |
| 04/09/2025 | 04/10/2025 | 18.25 | 1 |
| 11/14/2024 | 11/15/2024 | 8.00 | 1 |
| 07/30/2024 | 07/30/2024 | 9.00 | 1 |
| 06/03/2024 | 06/03/2024 | 1.50 | 1 |
| 02/12/2024 | 02/13/2024 | 13.75 | 1 |
| 08/15/2023 | 08/16/2023 | 7.50 | 1 |
| 11/14/2022 | 11/18/2022 | 25.50 | 1 |
| 08/04/2022 | 08/04/2022 | 12.00 | 1 |
| 01/24/2022 | 01/27/2022 | 44.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does SWA @ Mountain Gate Quarry have?
SWA @ Mountain Gate Quarry has 218 MSHA violations on record, of which 33 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $45K.
What type of mine is SWA @ Mountain Gate Quarry?
SWA @ Mountain Gate Quarry is a Surface mine producing Stone, located in REDDING, Shasta County, CA. It currently has 8 employees.
Has anyone been injured or killed at SWA @ Mountain Gate Quarry?
According to MSHA records, SWA @ Mountain Gate Quarry has 12 reported accident/injury records and 0 fatalities on file.
Who operates SWA @ Mountain Gate Quarry?
SWA @ Mountain Gate Quarry is operated by Stimpel Wiebelhaus Associates, Inc. and controlled by Corkey Harmon. MSHA Mine ID: 0405504.