Mining Incidents

SWA @ Mountain Gate Quarry Metal/Non-Metal

Controlled by Corkey Harmon
REDDING, Shasta County, CA  ·  Active
MSHA Mine ID: 0405504

SWA @ Mountain Gate Quarry has $45K in proposed MSHA penalties and $0 outstanding across 14 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
12
Years on record
2001–2025
Latest incident
Mar 2025
Compliance record
MSHA citations since 2002
218
citations
33
significant & substantial
$45,222
proposed penalties
$36,598
paid to date
81% of proposed penalties paid to date, a $8,624 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2002
70
inspections on record
1,446
inspection hours
15.1
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
218 citations across 1,446 inspection hours.
Source: MSHA inspections data, updated weekly.

SWA @ Mountain Gate Quarry has $45K in proposed MSHA penalties and $0 outstanding across 14 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$45K
proposed penalties
$37K
current assessed
$37K
paid to date
$0
outstanding
217 assessments are final orders; 14 contested dockets.
As of the most recent assessment on 2025-11-03.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q4 4,021 4 0 994.8
2025 Q3 5,156 0 0 0.0
2025 Q2 6,008 2 0 332.9
2025 Q1 4,994 0 0 0.0
2024 Q4 5,222 1 0 191.5
2024 Q3 5,492 0 0 0.0
2024 Q2 5,968 1 0 167.6
2024 Q1 4,682 0 0 0.0
Show 89 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 5,582 0 0 0.0
2023 Q3 5,410 2 0 369.7
2023 Q2 5,844 0 0 0.0
2023 Q1 4,144 0 0 0.0
2022 Q4 4,580 2 0 436.7
2022 Q3 5,852 6 1 1025.3
2022 Q2 5,116 0 0 0.0
2022 Q1 5,061 5 0 987.9
2021 Q4 4,885 0 0 0.0
2021 Q3 4,070 2 0 491.4
2021 Q2 4,559 0 0 0.0
2021 Q1 4,341 0 0 0.0
2020 Q4 5,547 1 0 180.3
2020 Q3 5,467 0 0 0.0
2020 Q2 5,474 0 0 0.0
2020 Q1 4,941 0 0 0.0
2019 Q4 5,248 6 0 1143.3
2019 Q3 4,387 2 0 455.9
2019 Q2 4,616 2 0 433.3
2019 Q1 4,229 2 0 472.9
2018 Q4 4,760 0 0 0.0
2018 Q3 4,891 3 1 613.4
2018 Q2 4,035 0 0 0.0
2018 Q1 4,153 0 0 0.0
2017 Q4 4,408 4 1 907.4
2017 Q3 5,089 0 0 0.0
2017 Q2 6,224 3 0 482.0
2017 Q1 3,475 0 0 0.0
2016 Q4 3,660 3 0 819.7
2016 Q3 4,132 6 0 1452.1
2016 Q2 4,228 0 0 0.0
2016 Q1 2,525 14 1 5544.6
2015 Q4 3,059 0 0 0.0
2015 Q3 3,234 0 0 0.0
2015 Q2 4,124 8 1 1939.9
2015 Q1 4,395 2 0 455.1
2014 Q4 3,770 0 0 0.0
2014 Q3 3,697 0 0 0.0
2014 Q2 3,796 0 0 0.0
2014 Q1 3,707 13 1 3506.9
2013 Q4 2,642 0 0 0.0
2013 Q3 2,883 3 1 1040.6
2013 Q2 4,026 2 1 496.8
2013 Q1 3,506 0 0 0.0
2012 Q4 6,340 4 2 630.9
2012 Q3 6,746 0 0 0.0
2012 Q2 2,720 3 2 1102.9
2012 Q1 1,855 3 0 1617.3
2011 Q4 1,789 0 0 0.0
2011 Q3 2,757 0 0 0.0
2011 Q2 3,698 0 0 0.0
2011 Q1 1,803 2 0 1109.3
2010 Q4 1,921 0 0 0.0
2010 Q3 2,023 0 0 0.0
2010 Q2 2,801 12 4 4284.2
2010 Q1 1,677 5 0 2981.5
2009 Q4 2,648 0 0 0.0
2009 Q3 2,534 0 0 0.0
2009 Q2 3,017 1 0 331.5
2009 Q1 2,346 1 0 426.3
2008 Q4 3,319 0 0 0.0
2008 Q3 3,778 0 0 0.0
2008 Q2 2,842 3 1 1055.6
2008 Q1 5,495 5 0 909.9
2007 Q4 5,488 0 0 0.0
2007 Q3 5,053 0 0 0.0
2007 Q2 6,816 3 0 440.1
2007 Q1 5,950 3 1 504.2
2006 Q4 7,183 0 0 0.0
2006 Q3 7,141 8 0 1120.3
2006 Q2 7,732 0 0 0.0
2006 Q1 6,841 9 1 1315.6
2005 Q4 7,732 0 0 0.0
2005 Q3 7,750 0 0 0.0
2005 Q2 6,883 4 1 581.1
2005 Q1 4,786 24 6 5014.6
2004 Q4 6,488 0 0 0.0
2004 Q3 6,052 5 1 826.2
2004 Q2 6,165 0 0 0.0
2004 Q1 5,168 0 0 0.0
2003 Q4 6,839 2 0 292.4
2003 Q3 7,229 0 0 0.0
2003 Q2 8,228 0 0 0.0
2003 Q1 7,056 6 1 850.3
2002 Q4 7,513 0 0 0.0
2002 Q3 9,332 4 0 428.6
2002 Q2 9,941 0 0 0.0
2002 Q1 8,412 12 5 1426.5
2001 Q4 4,825 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

12 on file

2025 · 1 incident

March 3, 2025 CA · Metal/Non-Metal plumber, pipefitter, millwright MACHINERY
Stimpel Wiebelhaus Associates, Inc. · Struck by... (Not Elsewhere Classified)

Miner was drilling a hole through some rubber flashing. Miner was operating the hand drill with left hand while supporting the section of flashing material from the back side with right hand. When the drill bit cut through it contacted the palm of the miner's right hand causing a laceration resulting in 6 stitches, antibiotics, and Tetanus shot. Restricted duty for 7-14 days.

2007 · 1 incident

November 5, 2007 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Stimpel Wiebelhaus Associates · Struck by... (Not Elsewhere Classified)

Needed to move 50#-3/8" steel plates. Plates adjacent cut the back of the base of right thumb. Required 4 stitches, but was able to return to full duty.

2006 · 1 incident

September 9, 2006 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Stimpel Wiebelhaus Associates · Over-exertion (Not Elsewhere Classified)

After pouring anfo into a drillhole from a 50# bag, EE had trouble standing up. He has had trouble in the past and did not report the incident until 9/22/06.

2005 · 6 incidents

September 19, 2005 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Stimpel Wiebelhaus Associates · Over-exertion (Not Elsewhere Classified)

Loader operator reaching for radio microphone & pulled muscle in shoulder.

June 29, 2005 CA · Metal/Non-Metal pumper HANDTOOLS (NONPOWERED)
Stimpel Wiebelhaus Associates · Caught in, under or between a moving and a stationary object

EE WAS TRYING TO DISLODGE ROCKS AT TUNNEL FEED WITH PRY BAR. WHILE USING FORCE ON BAR, HIS FINGER SLIPPED AND BECAME CAUGHT BETWEEN BAR AND METAL RAIL.

May 20, 2005 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Stimpel Wiebelhaus Associates · Struck against a moving object

EMPLOYEE CLAIMED HE HURT HIS BACK SEVERAL DAYS PRIOR TO REPORT DATE (5/26/06) AND ASSUMED IT WAS FROM BOUNCING IN THE LOADER. WORK RELATED INJURY IS UNCERTAIN. INJURY RESULTED IN MODIFIED DUTY FOR 2 WEEKS, NO LOST TIME

May 6, 2005 CA · Metal/Non-Metal weighman, scale person ALL OTHER OCCUPATIONAL ILLNESSES
Stimpel Wiebelhaus Associates · (Not Elsewhere Classified)

Soreness in neck & right arm -accumulation over several months. Per miner - not sure how it happened or if job related.

February 10, 2005 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Stimpel Wiebelhaus Associates · Absorption of radiations, caustics, toxic and noxious substances

EE WAS CHECKING FLASHING AT LIME PLANT AND DISTURBED SETTLED DUST. DUST IN EYE CAUSED INFECTION - DIAGNOSIS: LEFT EYE CONJUNCTIVITIS. DELAY IN REPORTING DUE TO DOCTOR'S INVESTIGATION WHETHER INDUSTRIAL.

February 2, 2005 CA · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management MACHINERY
Stimpel Wiebelhaus Associates · Struck by flying object

Using impact wrench attached to air hose, removing nuts to repair crusher. Nozzle came loose from hose, miner raised arm in defensive move. Pressurized air lacerated arm. 4 stitches required. No lost time. restrictions include keeping wound clean and dry.

2003 · 1 incident

November 4, 2003 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Stimpel Wiebelhaus Associates · Struck by flying object

MINER ATTEMPTING TO DISLODGE ROCK STUCK IN DOZER BLADE USING CRANE FROM BOOM TRUCK. TOO MUCH STRESS ON ROCK CAUSING IT TO FRACTURE. PIECES OF ROCK FLEW OUT HITTING MINER ON FOREHEAD. MINER WAS NOT WEARING HARD HAT.

2002 · 1 incident

March 1, 2002 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Stimpel Wiebelhaus Associates · Caught in, under or between (Not Elsewhere Classified)

MECHANIC NOTICED GUARD MISSING AT TAIL PULLEY & ASKED LABORER TO STANDBY WHILE MECHANIC RETRIEVED TOOLTRUCK & WELDER; LABORER BEGAN SHOVELING ROCK FROM BENEATH CONVEYOR, CAUGHT SLEEVE ON MET AL VIBRATORS & VIBRATORS CAUSED SEVERE ABRASIONSON LT. SIDE OF CHEST & UPPER LT. ARM.

2001 · 1 incident

For insurers, brokers, and safety consultants

The full compliance file on SWA @ Mountain Gate Quarry

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.