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Highway 175 Quarry: 49 MSHA citations Metal/Non-Metal

Controlled by Granite Construction Inc
Lakeport, Lake County, CA  ·  Active
MSHA Mine ID: 0405336

Highway 175 Quarry has $5K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
8
Years on record
2000–2017
Latest incident
Aug 2017
Compliance record
MSHA citations since 2000
49
citations
10
significant & substantial
$5,328
proposed penalties
$5,269
paid to date
99% of proposed penalties paid to date, a $59 gap.
Source: MSHA violations data, updated weekly.
See Granite Construction Co's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
62
inspections on record
885
inspection hours
n/a
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.
Rate withheld: 885 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘ A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2025-03-03.
On record since 2025.
Source: MSHA imminent-danger order records, updated weekly.

Highway 175 Quarry has $5K in proposed MSHA penalties and $0 outstanding across 1 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.
$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$0
outstanding
48 assessments are final orders; 1 contested dockets.
Of $234 in penalties contested before the Commission, $100 was upheld in final decisions.
As of the most recent assessment on 2025-12-17.
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.
20.8%
significant & substantial
2.1%
high negligence or reckless
20.8%
reasonably likely or greater
31.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 29.2% low, 68.8% moderate, 2.1% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
ⓘ Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
2 citations taken to the federal commission · 4% of citations on record
  • Settled 1 · 50%
  • Vacated or withdrawn 1 · 50%
0%
S&S designation survived the contest
ⓘ Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 2 decided S&S contests · industry: 79%
57%
Penalty reduction in decided contests
$234 proposed, $100 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2010-10-26.
Contested penalties
ⓘ A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
WEST 2011-150M Settlement Manning 2012 $234 → $100
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2025-09-10
0%
of limit-tested samples over the exposure limit
21
samples
2
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg11
  • Fibers, >5um5
  • Quartz, respirable, >1% Qtz3
  • Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (21)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-09-10 Respirable dust, <.1mg 0 Front-end Loader Operator
2025-09-10 Quartz, respirable, >1% Qtz 0.29 Laborer, Bullgang
2025-09-10 Respirable dust, <.1mg 0 Truck Driver
2025-09-10 Quartz, respirable, >1% Qtz 0.86 2.78 0.31 Laborer, Bullgang
2023-01-26 Respirable dust, <.1mg 0 Mechanic
2019-06-19 Respirable dust, <.1mg 0 Backhoe Operator
2019-06-19 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-04-02 Respirable dust, <.1mg 0 Crusher Oper/Worker
2015-04-02 Unlisted Particulate, respirable, <1% Qtz 0.12 Front-end Loader Operator
2015-04-02 Respirable dust, <.1mg 0 Front-end Loader Operator
2009-07-22 Respirable dust, <.1mg 0 Supervisor, Co. Official
2009-07-22 Respirable dust, <.1mg 0 Front-end Loader Operator
2009-07-22 Respirable dust, <.1mg 0 Supervisor, Co. Official
2003-03-12 Quartz, respirable, >1% Qtz 0.65 3.02 0.22 Cleanup Man
2003-03-12 Respirable dust, <.1mg 0 Front-end Loader Operator
2003-03-12 Unlisted Particulate, respirable, <1% Qtz 0.23 Crusher Oper/Worker
2002-05-15 Fibers, >5um 0 Laborer, Bullgang
2002-05-15 Fibers, >5um 0.01 Dry Screen Plant Operator
2002-05-15 Fibers, >5um 0 Front-end Loader Operator
2002-05-15 Fibers, >5um 0 Front-end Loader Operator
2002-05-15 Fibers, >5um 0 Bulldozer 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.

Highway 175 Quarry 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 1.42 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
2007 * 9.65 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. Parnum Paving, Inc. 1998 to 2002
  2. Granite Construction Co 2002 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 10
2025 12
2024 10
2023 6
2022 7
2021 7
2020 7
2019 6
2018 6
2017 5
2016 5
2015 7
2014 5
2013 6
2012 6
2011 13
2010 10
2009 20
2008 21
2007 27
2006 14
2005 11
2004 18
2003 10
2002 6
2001 7
2000 7
Source: MSHA quarterly employment and production, updated weekly.

Highway 175 Quarry sits in Lake County, California, where the Census mining category is 0.5% 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.
Lake County, California · Population 68,139
0.5%
Mining share of county employment
$58,738
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 7,197 0 0 0.0
2026 Q1 4,639 0 0 0.0
2025 Q4 5,650 1 0 177.0
2025 Q3 9,004 0 0 0.0
2025 Q2 8,386 0 0 0.0
2025 Q1 5,353 2 1 373.6
2024 Q4 5,722 0 0 0.0
2024 Q3 6,526 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 6,707 0 0 0.0
2024 Q1 3,679 4 0 1087.3
2023 Q4 4,133 0 0 0.0
2023 Q3 4,888 0 0 0.0
2023 Q2 4,940 0 0 0.0
2023 Q1 2,100 0 0 0.0
2022 Q4 3,856 0 0 0.0
2022 Q3 5,115 0 0 0.0
2022 Q2 4,885 0 0 0.0
2022 Q1 3,629 1 0 275.6
2021 Q4 3,701 0 0 0.0
2021 Q3 5,353 2 0 373.6
2021 Q2 6,034 0 0 0.0
2021 Q1 3,695 0 0 0.0
2020 Q4 4,314 0 0 0.0
2020 Q3 5,479 0 0 0.0
2020 Q2 5,074 0 0 0.0
2020 Q1 3,046 0 0 0.0
2019 Q4 3,308 0 0 0.0
2019 Q3 4,480 0 0 0.0
2019 Q2 4,792 1 0 208.7
2019 Q1 2,389 0 0 0.0
2018 Q4 3,315 0 0 0.0
2018 Q3 3,859 0 0 0.0
2018 Q2 3,687 0 0 0.0
2018 Q1 2,855 0 0 0.0
2017 Q4 2,050 0 0 0.0
2017 Q3 3,951 1 0 253.1
2017 Q2 4,091 0 0 0.0
2017 Q1 2,545 0 0 0.0
2016 Q4 1,803 1 0 554.6
2016 Q3 2,915 0 0 0.0
2016 Q2 4,424 0 0 0.0
2016 Q1 2,804 1 0 356.6
2015 Q4 2,028 0 0 0.0
2015 Q3 5,369 0 0 0.0
2015 Q2 4,576 1 0 218.5
2015 Q1 2,207 0 0 0.0
2014 Q4 1,239 0 0 0.0
2014 Q3 3,403 0 0 0.0
2014 Q2 3,285 0 0 0.0
2014 Q1 758 0 0 0.0
2013 Q4 2,322 0 0 0.0
2013 Q3 4,626 0 0 0.0
2013 Q2 3,623 0 0 0.0
2013 Q1 867 0 0 0.0
2012 Q4 1,418 0 0 0.0
2012 Q3 3,636 0 0 0.0
2012 Q2 3,279 0 0 0.0
2012 Q1 1,428 0 0 0.0
2011 Q4 3,606 3 2 831.9
2011 Q3 5,345 0 0 0.0
2011 Q2 5,463 3 2 549.1
2011 Q1 1,691 0 0 0.0
2010 Q4 1,091 0 0 0.0
2010 Q3 4,447 2 0 449.7
2010 Q2 4,265 0 0 0.0
2010 Q1 1,039 0 0 0.0
2009 Q4 2,114 1 0 473.0
2009 Q3 3,222 1 0 310.4
2009 Q2 4,557 0 0 0.0
2009 Q1 1,934 3 0 1551.2
2008 Q4 2,578 0 0 0.0
2008 Q3 2,105 0 0 0.0
2008 Q2 5,548 0 0 0.0
2008 Q1 3,253 0 0 0.0
2007 Q4 6,025 3 2 497.9
2007 Q3 5,508 0 0 0.0
2007 Q2 5,538 1 1 180.6
2007 Q1 3,659 0 0 0.0
2006 Q4 2,064 3 0 1453.5
2006 Q3 7,132 0 0 0.0
2006 Q2 5,451 2 0 366.9
2006 Q1 3,873 0 0 0.0
2005 Q4 5,533 2 2 361.5
2005 Q3 8,207 0 0 0.0
2005 Q2 3,449 0 0 0.0
2005 Q1 1,927 0 0 0.0
2004 Q4 4,109 0 0 0.0
2004 Q3 4,541 0 0 0.0
2004 Q2 3,146 0 0 0.0
2004 Q1 2,446 0 0 0.0
2003 Q4 4,158 0 0 0.0
2003 Q3 7,590 0 0 0.0
2003 Q2 4,725 0 0 0.0
2003 Q1 1,938 0 0 0.0
2002 Q4 2,971 0 0 0.0
2002 Q3 3,579 0 0 0.0
2002 Q2 3,374 1 0 296.4
2002 Q1 999 0 0 0.0
2001 Q4 2,327 2 0 859.5
2001 Q3 3,520 0 0 0.0
2001 Q2 3,407 2 0 587.0
2001 Q1 1,587 0 0 0.0
2000 Q4 2,682 1 0 372.9
2000 Q3 4,186 0 0 0.0
2000 Q2 3,521 1 0 284.0
2000 Q1 318 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

8 on file

2017 · 1 incident

August 29, 2017 CA · Metal/Non-Metal FIRE
Granite Construction Co · Accident type, without injuries

A 12KV power line failure resulted in a 4.9 acre brush fire. A communication cable was damaged.

2008 · 1 incident

March 31, 2008 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Granite Construction Co · Caught in, under or between a moving and a stationary object

While waiting for another employee to finish a job, injured employee decided to remove a tail-pulley on a cross-conveyor. Employee tried to remove pulley with prybar, when left hand index finger was pinched between tail-pulley and frame.

2007 · 1 incident

January 26, 2007 CA · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor STRIKING OR BUMPING
Granite Construction Co · Struck against stationary object

While walking out from under conveyor, ee came up too soon and hit hardhat on conveyor beam. This caused ee to lose conscieness and fall to ground. His neck and jaw were injured.

2006 · 3 incidents

June 30, 2006 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Granite Construction Co · Over-exertion (Not Elsewhere Classified)

Employee was helping to position the bottom portion of a screen deck, when he strained his lower back.

June 6, 2006 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Granite Construction Co · Over-exertion (Not Elsewhere Classified)

Employee was holding impact gun over his head to conduct maintenance on horizontal crusher. While doing this, he strained right shoulder.

May 10, 2006 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Granite Construction Co · Contact with hot objects or substances

EE was using gas welding torch to perform maintenance on conveyor, when a piece of hot slag entered around his wrap-around safety glasses and contacted his left eye.

2005 · 1 incident

November 22, 2005 CA · Metal/Non-Metal coal/ore shovel operator, shoveler, power shoveler SLIP OR FALL OF PERSON
Granite Construction Co · Fall onto or against objects

While walking down a bank of pit material ee slipped and struck his hand right on a sharp rock causing a small laceration to his little finger.

2000 · 1 incident

September 27, 2000 CA · Metal/Non-Metal backhoe operator, trackhoe operator, crane operator POWERED HAULAGE
Parnum Paving, Inc. · Over-exertion (Not Elsewhere Classified)

WHILE OPERATING LOADER IN THE PIT AND FEEDING THE CRUSHER, EMPLOYEE SAID THAT THE SEAT ON THE LOADER WAS BROKEN. SUPERVISOR LOOKED AT THE SEAT AND FOUND SOME WEAR IN THE ADJUSTMENTS BUT THERE WERE NO LOOSE PIECES AND SEAT WAS NOT LOOSE.