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Canyon Rock Co Inc: 245 MSHA citations Metal/Non-Metal

Canyon Rock Co Inc · Surface
Controlled by Wendel Trappe
Forestville, Sonoma County, CA  ·  Active
MSHA Mine ID: 0400079

Canyon Rock Co Inc has $76K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
20
Years on record
1989–2023
Latest incident
Nov 2023
Compliance record
MSHA citations since 2000
245
citations
61
significant & substantial
$76,130
proposed penalties
$76,130
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Canyon Rock Co Inc's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
76
inspections on record
1,414
inspection hours
17.3
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.
245 citations across 1,414 inspection hours.
Source: MSHA inspections data, updated weekly.

Canyon Rock Co Inc has $76K in proposed MSHA penalties and $0 outstanding across 0 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.
$76K
proposed penalties
$76K
current assessed
$76K
paid to date
$0
outstanding
242 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-02-10.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘ Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
25.0%
significant & substantial
2.0%
high negligence or reckless
25.0%
reasonably likely or greater
54.1%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 12.7% low, 85.2% moderate, 2.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
ⓘ A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
ⓘ Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2026-08-04
4%
of limit-tested samples over the exposure limit
33
samples
23
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz241 over
  • Respirable dust, <.1mg7
  • Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (33)
Date Contaminant Concentration Limit Conc / limit Occupation
2022-01-12 Quartz, respirable, >1% Qtz 1.23 0.94 1.31 Laborer, Bullgang
2026-08-04 Quartz, respirable, >1% Qtz 0.63 0.9 0.70 Cont. Miner Operator
2026-08-04 Quartz, respirable, >1% Qtz 0.16 0.85 0.19 Cont. Miner Operator
2025-08-06 Quartz, respirable, >1% Qtz 0.37 0.91 0.41 Cont. Miner Operator
2025-08-06 Quartz, respirable, >1% Qtz 0.27 0.87 0.31 Front-end Loader Operator
2025-08-06 Quartz, respirable, >1% Qtz 0.42 0.86 0.49 Laborer, Bullgang
2025-08-06 Respirable dust, <.1mg 0 Front-end Loader Operator
2022-04-21 Quartz, respirable, >1% Qtz 0.32 1.03 0.31 Laborer, Bullgang
2022-01-12 Respirable dust, <.1mg 0 Front-end Loader Operator
2022-01-12 Quartz, respirable, >1% Qtz 0.56 0.87 0.64 Dry Screen Plant Operator
2020-10-21 Quartz, respirable, >1% Qtz 0.5 0.85 0.59 Laborer, Bullgang
2020-10-21 Quartz, respirable, >1% Qtz 0.45 0.9 0.50 Laborer, Bullgang
2019-04-17 Quartz, respirable, >1% Qtz 0.14 Cleanup Man
2019-04-17 Quartz, respirable, >1% Qtz 0.26 0.88 0.30 Cleanup Man
2016-03-01 Quartz, respirable, >1% Qtz 0.45 0.93 0.48 Dry Screen Plant Operator
2015-02-25 Respirable dust, <.1mg 0 Cleanup Man
2015-02-25 Unlisted Particulate, respirable, <1% Qtz 0.12 Bobcat Operator
2015-02-25 Respirable dust, <.1mg 0 Laborer, Bullgang
2009-04-29 Quartz, respirable, >1% Qtz 0.12 0.67 0.18 Crusher Oper/Worker
2009-04-29 Quartz, respirable, >1% Qtz 0.17 1.22 0.14 Front-end Loader Operator
2006-08-02 Quartz, respirable, >1% Qtz 0.39 0.87 0.45 Crusher Oper/Worker
2006-08-02 Unlisted Particulate, respirable, <1% Qtz 0.22 Front-end Loader Operator
2006-08-02 Quartz, respirable, >1% Qtz 0.18 0.84 0.21 Crusher Oper/Worker
2006-08-02 Quartz, respirable, >1% Qtz 0.53 0.9 0.59 Laborer, Bullgang
2005-04-20 Quartz, respirable, >1% Qtz 0.26 0.71 0.37 Crusher Oper/Worker
2005-04-20 Quartz, respirable, >1% Qtz 0.72 0.98 0.73 Building Repair/Maint.
2005-04-20 Quartz, respirable, >1% Qtz 0.12 0.93 0.13 Laborer, Bullgang
2005-04-20 Quartz, respirable, >1% Qtz 0.15 1.3 0.12 Dry Screen Plant Operator
2002-04-17 Respirable dust, <.1mg 0 Laborer, Bullgang
2002-04-17 Quartz, respirable, >1% Qtz 0.15 0.52 0.29 Bulldozer Operator
2002-04-17 Quartz, respirable, >1% Qtz 0.19 0.74 0.26 Laborer, Bullgang
2002-04-17 Respirable dust, <.1mg 0 Washer Operator
2002-04-17 Respirable dust, <.1mg 0 Front-end Loader Operator
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.

Canyon Rock Co Inc recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
ⓘ This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In California, metal and nonmetal mining averaged 1.43 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year total case rate days-away fatal
2025 * 0.00 0.00 0.000
2024 * 0.00 0.00 0.000
2023 * 0.00 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 10.27 2.57 0.000
2018 * 0.00 0.00 0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
  1. Canyon Rock Co Inc 1950 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 53
2025 49
2024 42
2023 41
2022 38
2021 37
2020 39
2019 37
2018 36
2017 34
2016 31
2015 29
2014 28
2013 27
2012 23
2011 22
2010 21
2009 21
2008 22
2007 22
2006 21
2005 20
2004 20
2003 20
2002 20
2001 16
2000 19
Source: MSHA quarterly employment and production, updated weekly.

Canyon Rock Co Inc sits in Sonoma County, California, where the Census mining category is 0.0% of county employment.

Local economic context
ⓘ County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Sonoma County, California · Population 485,642
0.0%
Mining share of county employment
$102,840
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2026 Q2 24,860 0 0 0.0
2026 Q1 23,063 5 0 216.8
2025 Q4 21,471 0 0 0.0
2025 Q3 22,211 0 0 0.0
2025 Q2 22,262 0 0 0.0
2025 Q1 22,990 5 0 217.5
2024 Q4 18,292 0 0 0.0
2024 Q3 20,282 3 0 147.9
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 19,726 0 0 0.0
2024 Q1 17,490 6 2 343.1
2023 Q4 18,547 0 0 0.0
2023 Q3 21,571 0 0 0.0
2023 Q2 20,650 0 0 0.0
2023 Q1 16,501 1 0 60.6
2022 Q4 18,963 0 0 0.0
2022 Q3 20,120 0 0 0.0
2022 Q2 19,502 12 3 615.3
2022 Q1 18,637 9 1 482.9
2021 Q4 21,804 0 0 0.0
2021 Q3 20,391 2 0 98.1
2021 Q2 20,514 0 0 0.0
2021 Q1 16,964 0 0 0.0
2020 Q4 22,528 5 2 221.9
2020 Q3 22,561 3 0 133.0
2020 Q2 19,526 0 0 0.0
2020 Q1 18,472 5 0 270.7
2019 Q4 19,264 0 0 0.0
2019 Q3 21,368 0 0 0.0
2019 Q2 20,551 2 1 97.3
2019 Q1 16,724 0 0 0.0
2018 Q4 19,803 3 0 151.5
2018 Q3 20,642 0 0 0.0
2018 Q2 21,134 5 3 236.6
2018 Q1 17,770 9 7 506.5
2017 Q4 17,987 0 0 0.0
2017 Q3 19,413 1 0 51.5
2017 Q2 18,761 0 0 0.0
2017 Q1 13,956 3 0 215.0
2016 Q4 15,950 0 0 0.0
2016 Q3 19,818 4 2 201.8
2016 Q2 16,939 0 0 0.0
2016 Q1 13,369 4 1 299.2
2015 Q4 17,224 0 0 0.0
2015 Q3 16,491 13 6 788.3
2015 Q2 14,866 0 0 0.0
2015 Q1 16,384 12 1 732.4
2014 Q4 16,992 0 0 0.0
2014 Q3 17,378 0 0 0.0
2014 Q2 18,103 3 0 165.7
2014 Q1 13,562 9 1 663.6
2013 Q4 17,449 0 0 0.0
2013 Q3 17,534 0 0 0.0
2013 Q2 16,538 6 0 362.8
2013 Q1 14,522 0 0 0.0
2012 Q4 20,065 20 7 996.8
2012 Q3 14,500 0 0 0.0
2012 Q2 13,637 5 1 366.6
2012 Q1 11,274 0 0 0.0
2011 Q4 12,742 5 2 392.4
2011 Q3 13,161 0 0 0.0
2011 Q2 11,846 0 0 0.0
2011 Q1 10,673 7 0 655.9
2010 Q4 11,158 10 4 896.2
2010 Q3 11,823 3 1 253.7
2010 Q2 10,627 0 0 0.0
2010 Q1 8,963 4 0 446.3
2009 Q4 9,956 0 0 0.0
2009 Q3 12,688 0 0 0.0
2009 Q2 9,503 0 0 0.0
2009 Q1 8,935 0 0 0.0
2008 Q4 12,246 6 0 490.0
2008 Q3 11,277 0 0 0.0
2008 Q2 11,737 3 2 255.6
2008 Q1 10,960 3 1 273.7
2007 Q4 12,262 0 0 0.0
2007 Q3 12,073 0 0 0.0
2007 Q2 11,858 4 1 337.3
2007 Q1 10,479 3 1 286.3
2006 Q4 12,158 0 0 0.0
2006 Q3 12,173 7 2 575.0
2006 Q2 11,434 0 0 0.0
2006 Q1 9,841 0 0 0.0
2005 Q4 10,907 2 1 183.4
2005 Q3 10,971 0 0 0.0
2005 Q2 11,309 2 0 176.9
2005 Q1 9,070 0 0 0.0
2004 Q4 9,622 4 2 415.7
2004 Q3 11,068 0 0 0.0
2004 Q2 10,645 4 0 375.8
2004 Q1 9,303 0 0 0.0
2003 Q4 10,033 2 0 199.3
2003 Q3 11,060 5 1 452.1
2003 Q2 10,004 0 0 0.0
2003 Q1 8,778 1 1 113.9
2002 Q4 10,816 0 0 0.0
2002 Q3 11,706 0 0 0.0
2002 Q2 10,858 0 0 0.0
2002 Q1 9,389 0 0 0.0
2001 Q4 9,595 6 2 625.3
2001 Q3 9,179 0 0 0.0
2001 Q2 8,922 1 1 112.1
2001 Q1 8,330 2 0 240.1
2000 Q4 9,464 0 0 0.0
2000 Q3 9,542 0 0 0.0
2000 Q2 9,734 0 0 0.0
2000 Q1 8,052 5 1 621.0
No fatalities recorded at this mine.

Reportable incidents

20 on file

2023 · 1 incident

November 8, 2023 CA · Metal/Non-Metal groundman, yardman POWERED HAULAGE
Canyon Rock Co Inc · Caught in, under or between a moving and a stationary object

The equipment failed while EE was hydroseeding and it slid off the back of the flatbed truck. EE fell off and EE's left arm got pinned underneath the equipment.

2019 · 4 incidents

November 19, 2019 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer STRIKING OR BUMPING
Canyon Rock Co Inc · Struck against stationary object

Hit head on steel beam.

November 12, 2019 CA · Metal/Non-Metal miner, prospector, nec POWERED HAULAGE
Canyon Rock Co Inc · Over-exertion (Not Elsewhere Classified)

Employee was operating a skid steer and twisted the wrong way, resulting in a torn MCL on EE's knee.

April 22, 2019 CA · Metal/Non-Metal miner, prospector, nec HANDTOOLS (NONPOWERED)
Canyon Rock Co Inc · Struck by... (Not Elsewhere Classified)

Employee was cutting a zip tie with a knife and cut EE's left thumb by accident, requiring 8 stitches.

March 26, 2019 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Canyon Rock Co Inc · Struck against stationary object

Employee was taking apart a metal pipe with a sharp edge piece of metal that cut their left hand.

2015 · 1 incident

February 6, 2015 CA · Metal/Non-Metal IMPOUNDMENT
Canyon Rock Co Inc · Accident type, without injuries

Refuse Pile adjacent to the shop washed in and onto the shop floor about 2" deep. This occurred in a 50 year rain storm.

2012 · 1 incident

October 2, 2012 CA · Metal/Non-Metal ledgeman/hand, quarry man HANDLING OF MATERIALS
Canyon Rock Co Inc · Struck by... (Not Elsewhere Classified)

Pulling on rope attached to bar and bar slipped and hit employee in back.

2010 · 1 incident

July 7, 2010 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Canyon Rock Co Inc · Struck by... (Not Elsewhere Classified)

Employee was welding a piece of metal on the wash plant. He was wearing a shield. Between welds, he lifted his shield to pick at some metal. A piece fell into his eye. Metal was removed by Doctor. He is fine.

2005 · 2 incidents

June 7, 2005 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Canyon Rock Co Inc · Struck by flying object

Employee was cleaning out the hopper when some material dislodged, catching im in the back of his ankle.

January 4, 2005 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Canyon Rock Co Inc · Struck by falling object

Employee reached out to remove a rock from the crusher while another employee swung a hammer to break another rock. The sledge hammer hit the first employee's left thumb causing a deep laceration and broken thumb.

1997 · 1 incident

March 7, 1997 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Canyon Rock Co Inc · Fall from machine

THE EMPLOYEE HAD BEEN WORKING ON A SCREEN. WHEN HE STARTED DOWN THE LADDER HE SLIPPED AND FELL. THE EMPLOYEE HAD NEW BOOTS ON.

1996 · 1 incident

April 17, 1996 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer FALLING/SLIDING/ROLLING MATERIALS
Canyon Rock Co Inc · Struck by falling object

EE DROVE UP IN THE LOADER WHICH WAS CARRYING THE CHAINS AND HE HAD GOTTEN OUT WITH ONE CHAIN AND HAD STARTED BACK TO THE LOADER TO GET ANOTHER WHEN A PIECE OF I-BEAM FELL AND HIT HIM.

1995 · 4 incidents

October 12, 1995 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Canyon Rock Co Inc · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS CUTTING A PIECE OF CONVEYOR BELTINGPLACED IT ON HIS LEFT LEG AND PROCEEDED TO CUT THE BELT AND HIS LEG.

October 4, 1995 CA · Metal/Non-Metal ledgeman/hand, quarry man HANDTOOLS (NONPOWERED)
Canyon Rock Co Inc · Struck by flying object

EMPLOYEE WAS SHOVELING ROCK WHEN ONE OF THE ROCKS FLEW UP AND HIT HIM IN THE FOREHEAD CAUSING A LACERATION.

July 27, 1995 CA · Metal/Non-Metal outside foreman, leadman HANDTOOLS (NONPOWERED)
Canyon Rock Co Inc · Fall onto or against objects

PUSHING ON WRENCH A BOLT BROKE OFF & THE EMPLOYEE FELL DOWN ON THE PULLEY ON HIS LEFT KNEE

June 12, 1995 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Canyon Rock Co Inc · Fall from ladders

EMPLOYEE WAS WORKING ON AN IMPACT CRUSHER WHILE BALANCING HIMSELF ON A LADDER. HE STEPPED BACK, LOST HIS BALANCE AND FELL TO THE GROUND. THE EMPLOYEE HAD PREVIOUSLY BEEN TOLD TO USE THE MANLIF T FOR THIS PURPOSE.

1994 · 1 incident

January 7, 1994 CA · Metal/Non-Metal ledgeman/hand, quarry man POWERED HAULAGE
Canyon Rock Co Inc · Caught in, under or between (Not Elsewhere Classified)

CAME DOWN OFF SCREEN FRAME. MISSED HIS FOOTING AND LEFT LEG GOT CAUGHT IN PULLEY.

1993 · 2 incidents

March 11, 1993 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Canyon Rock Co Inc · Struck by flying object

BEATING ON ROCK WITH A SLEDGE HAMMER, EMPLOYEE WAS NOT WEARING ASSIGNED SAFETY GLASSES AND PARTICLE FLEW IN HIS EYE.

January 29, 1993 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Canyon Rock Co Inc · Over-exertion (Not Elsewhere Classified)

WE DO NOT KNOW THE CONTRIBUTING FACTORS THE EMP LOYEE JUST STARTED FEELING STIFFNESS. THIS WAS NOT REPORTED TO EMPLOYER UNTIL 2-9-93 (PLEASE NOTE WE LEARNED AFTER THE FACT THAT THIS EMPLOYE E HAD BEEN DOING WORK AT HOME AND BECAUSE THE WORKER'S COMP CARRIER WAS GOING BANKRUPT THIS NEVER GOT INVESTIGATED ALTHOUGH WE STATED ON REPORT THAT WE TOLD THEM WE DID NOT AGREE.

1989 · 1 incident

August 7, 1989 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Canyon Rock Co Inc · Fall from machine

THE EMPLOYEE CRAWLED ON TOP OF THE HOPPER AND WAS BALANCING ON A ROCK AND THE RAILING WHEN THE ROCK SLIPPED. THE EMPLOYEE FELL INTO THE HOPPER.