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

Active Surface Stone

Operator: Stimpel Wiebelhaus Associates, Inc.

Controller: Corkey Harmon

Location: REDDING, Shasta County, CA

Employees: 8

218
Violations
33
S&S Violations
12
Accidents
$45K
Penalties

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

MSHA Mine ID0405504
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Stone NEC
Employees8
Days/Week5.0
Hours/Shift8.0
Coordinates40.7263890, -122.3027780
Nearest TownREDDING

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.