BURNCO Colorado LLC · Flash burns (electric)
Plant Manager was reversing the rotation(polarity) of the sand screw motor at the electrical panel which created an arc flash in the panel
Inouye Gravel Mine: 94 MSHA citations Metal/Non-Metal
Inouye Gravel Mine has $17K in proposed MSHA penalties and $732 outstanding across 2 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 13
- Years on record
- 1999–2026
- Latest incident
- Jan 2026
Compliance record
MSHA citations since 2001
94
citations
19
significant & substantial
$17,145
proposed penalties
$16,413
paid to date
96% of proposed penalties paid to date, a $732 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
56
inspections on record
745
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: 745 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Inouye Gravel Mine has $17K in proposed MSHA penalties and $732 outstanding across 2 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.$17K
proposed penalties
$17K
current assessed
$16K
paid to date
$732
outstanding
89 assessments are final orders; 2 contested dockets.
Of $869 in penalties contested before the Commission, $456 was upheld in final decisions.
As of the most recent assessment on 2026-04-30.
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.20.2%
significant & substantial
9.6%
high negligence or reckless
20.2%
reasonably likely or greater
43.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 14.9% low, 75.5% moderate, 9.6% 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.
5
citations taken to the federal commission · 5% of citations on record
- Stood as issued 4 · 80%
- Vacated or withdrawn 1 · 20%
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 1 decided S&S contests · industry: 79%
48%
Penalty reduction in decided contests
$869 proposed, $456 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 2016-10-05.
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 2017-0007 | Default | Lesnick | 2017 | $456 → $456 |
| WEST 2016-0740 | Withdrawal | Lesnick | 2017 | $413 → $0 |
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: 2025-10-15
ⓘ
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.0%
of limit-tested samples over the exposure limit
22
samples
9
limit-tested
Most sampled contaminants
- Respirable dust, <.1mg13
- Quartz, respirable, >1% Qtz9
Show the individual readings (22)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2025-10-15 | Respirable dust, <.1mg | 0 | Dry Screen Plant Operator | ||
| 2025-10-15 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2025-10-15 | Respirable dust, <.1mg | 0 | Cleanup Man | ||
| 2025-10-15 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2024-11-20 | Respirable dust, <.1mg | 0 | Laborer, Bullgang | ||
| 2024-11-20 | Quartz, respirable, >1% Qtz | 0.15 | 0.41 | 0.37 | Laborer, Bullgang |
| 2024-11-20 | Respirable dust, <.1mg | 0 | Laborer, Bullgang | ||
| 2019-06-07 | Quartz, respirable, >1% Qtz | 0.47 | 0.81 | 0.58 | Cleanup Man |
| 2019-06-07 | Quartz, respirable, >1% Qtz | 0.45 | 1.22 | 0.37 | Bobcat Operator |
| 2016-07-12 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2016-07-12 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2016-07-12 | Quartz, respirable, >1% Qtz | 0.14 | 0.47 | 0.30 | Supervisor, Co. Official |
| 2016-07-12 | Quartz, respirable, >1% Qtz | 0.16 | 1.07 | 0.15 | Bobcat Operator |
| 2011-11-30 | Respirable dust, <.1mg | 0 | Bulldozer Operator | ||
| 2011-11-30 | Respirable dust, <.1mg | 0 | Crusher Oper/Worker | ||
| 2011-11-30 | Respirable dust, <.1mg | 0 | Laborer, Bullgang | ||
| 2010-11-05 | Quartz, respirable, >1% Qtz | 0.21 | 0.78 | 0.27 | Supervisor, Co. Official |
| 2010-11-05 | Quartz, respirable, >1% Qtz | 0.19 | 0.78 | 0.24 | Front-end Loader Operator |
| 2010-11-05 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2004-02-19 | Quartz, respirable, >1% Qtz | 0.42 | 0.59 | 0.71 | Crusher Oper/Worker |
| 2004-02-19 | Respirable dust, <.1mg | 0 | Utility Man | ||
| 2004-02-19 | Quartz, respirable, >1% Qtz | 0.14 | 0.65 | 0.22 | Laborer, Bullgang |
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.
Inouye Gravel Mine 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 Colorado, metal and nonmetal mining averaged 1.64 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 |
| 2021 * | 9.85 | 0.00 | 0.000 |
| 2020 * | 7.64 | 0.00 | 0.000 |
| 2019 * | 7.32 | 0.00 | 0.000 |
| 2018 * | 0.00 | 0.00 | 0.000 |
| 2016 * | 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
- Hall-Irwin Construction Company 1998 to 2006
- Hall Irwin Corporation 2006 to 2010
- Hall-Irwin Aggregates LLC 2010 to 2012
- BURNCO Colorado LLC 2012 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 13 |
| 2025 | 12 |
| 2024 | 12 |
| 2023 | 11 |
| 2022 | 9 |
| 2021 | 11 |
| 2020 | 13 |
| 2019 | 14 |
| 2018 | 10 |
| 2017 | 5 |
| 2016 | 10 |
| 2015 | 11 |
| 2014 | 13 |
| 2013 | 9 |
| 2012 | 4 |
| 2011 | 6 |
| 2010 | 2 |
| 2009 | 5 |
| 2008 | 11 |
| 2007 | 17 |
| 2006 | 12 |
| 2005 | 12 |
| 2004 | 16 |
| 2003 | 8 |
| 2002 | 11 |
| 2001 | 11 |
| 2000 | 8 |
Source: MSHA quarterly employment and production, updated weekly.
Inouye Gravel Mine sits in Weld County, Colorado, where the Census mining category is 2.4% 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.Weld County, Colorado · Population 340,711
2.4%
Mining share of county employment
$93,287
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 | 10,207 | 8 | 2 | 783.8 |
| 2026 Q1 | 8,432 | 0 | 0 | 0.0 |
| 2025 Q4 | 8,005 | 0 | 0 | 0.0 |
| 2025 Q3 | 8,553 | 0 | 0 | 0.0 |
| 2025 Q2 | 9,614 | 0 | 0 | 0.0 |
| 2025 Q1 | 8,037 | 0 | 0 | 0.0 |
| 2024 Q4 | 7,348 | 1 | 0 | 136.1 |
| 2024 Q3 | 5,588 | 2 | 0 | 357.9 |
Show 98 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 8,196 | 0 | 0 | 0.0 |
| 2024 Q1 | 7,299 | 0 | 0 | 0.0 |
| 2023 Q4 | 5,819 | 3 | 0 | 515.6 |
| 2023 Q3 | 5,308 | 2 | 0 | 376.8 |
| 2023 Q2 | 5,886 | 0 | 0 | 0.0 |
| 2023 Q1 | 5,277 | 0 | 0 | 0.0 |
| 2022 Q4 | 4,267 | 0 | 0 | 0.0 |
| 2022 Q3 | 5,108 | 3 | 0 | 587.3 |
| 2022 Q2 | 4,937 | 2 | 1 | 405.1 |
| 2022 Q1 | 4,296 | 8 | 2 | 1862.2 |
| 2021 Q4 | 4,531 | 0 | 0 | 0.0 |
| 2021 Q3 | 5,345 | 0 | 0 | 0.0 |
| 2021 Q2 | 4,719 | 3 | 1 | 635.7 |
| 2021 Q1 | 5,719 | 2 | 0 | 349.7 |
| 2020 Q4 | 6,474 | 0 | 0 | 0.0 |
| 2020 Q3 | 6,180 | 1 | 1 | 161.8 |
| 2020 Q2 | 6,350 | 0 | 0 | 0.0 |
| 2020 Q1 | 7,168 | 0 | 0 | 0.0 |
| 2019 Q4 | 8,144 | 0 | 0 | 0.0 |
| 2019 Q3 | 7,577 | 0 | 0 | 0.0 |
| 2019 Q2 | 6,465 | 0 | 0 | 0.0 |
| 2019 Q1 | 5,137 | 0 | 0 | 0.0 |
| 2018 Q4 | 5,580 | 0 | 0 | 0.0 |
| 2018 Q3 | 5,689 | 0 | 0 | 0.0 |
| 2018 Q2 | 4,938 | 2 | 1 | 405.0 |
| 2018 Q1 | 4,460 | 0 | 0 | 0.0 |
| 2017 Q4 | 4,808 | 0 | 0 | 0.0 |
| 2017 Q3 | 4,034 | 1 | 1 | 247.9 |
| 2017 Q2 | 4,877 | 0 | 0 | 0.0 |
| 2017 Q1 | 0 | 1 | 0 | |
| 2016 Q4 | 7,074 | 0 | 0 | 0.0 |
| 2016 Q3 | 6,651 | 8 | 0 | 1202.8 |
| 2016 Q2 | 8,272 | 0 | 0 | 0.0 |
| 2016 Q1 | 6,160 | 0 | 0 | 0.0 |
| 2015 Q4 | 6,423 | 0 | 0 | 0.0 |
| 2015 Q3 | 7,482 | 0 | 0 | 0.0 |
| 2015 Q2 | 9,003 | 0 | 0 | 0.0 |
| 2015 Q1 | 6,129 | 5 | 2 | 815.8 |
| 2014 Q4 | 8,399 | 0 | 0 | 0.0 |
| 2014 Q3 | 7,482 | 1 | 0 | 133.7 |
| 2014 Q2 | 7,570 | 0 | 0 | 0.0 |
| 2014 Q1 | 7,347 | 0 | 0 | 0.0 |
| 2013 Q4 | 6,455 | 0 | 0 | 0.0 |
| 2013 Q3 | 7,631 | 0 | 0 | 0.0 |
| 2013 Q2 | 6,045 | 0 | 0 | 0.0 |
| 2013 Q1 | 0 | 0 | 0 | |
| 2012 Q4 | 0 | 0 | 0 | |
| 2012 Q3 | 0 | 0 | 0 | |
| 2012 Q2 | 4,263 | 0 | 0 | 0.0 |
| 2012 Q1 | 3,824 | 0 | 0 | 0.0 |
| 2011 Q4 | 2,265 | 1 | 1 | 441.5 |
| 2011 Q3 | 3,539 | 0 | 0 | 0.0 |
| 2011 Q2 | 2,716 | 0 | 0 | 0.0 |
| 2011 Q1 | 1,036 | 0 | 0 | 0.0 |
| 2010 Q4 | 2,255 | 3 | 1 | 1330.4 |
| 2010 Q3 | 1,907 | 0 | 0 | 0.0 |
| 2010 Q2 | 0 | 0 | 0 | |
| 2010 Q1 | 0 | 1 | 0 | |
| 2009 Q4 | 2,335 | 1 | 0 | 428.3 |
| 2009 Q3 | 2,477 | 3 | 0 | 1211.1 |
| 2009 Q2 | 2,566 | 0 | 0 | 0.0 |
| 2009 Q1 | 160 | 0 | 0 | 0.0 |
| 2008 Q4 | 2,964 | 0 | 0 | 0.0 |
| 2008 Q3 | 5,895 | 0 | 0 | 0.0 |
| 2008 Q2 | 5,968 | 3 | 1 | 502.7 |
| 2008 Q1 | 4,545 | 2 | 0 | 440.0 |
| 2007 Q4 | 5,386 | 0 | 0 | 0.0 |
| 2007 Q3 | 7,237 | 0 | 0 | 0.0 |
| 2007 Q2 | 6,671 | 0 | 0 | 0.0 |
| 2007 Q1 | 9,217 | 0 | 0 | 0.0 |
| 2006 Q4 | 5,842 | 0 | 0 | 0.0 |
| 2006 Q3 | 4,912 | 0 | 0 | 0.0 |
| 2006 Q2 | 4,900 | 0 | 0 | 0.0 |
| 2006 Q1 | 4,594 | 0 | 0 | 0.0 |
| 2005 Q4 | 5,123 | 0 | 0 | 0.0 |
| 2005 Q3 | 5,009 | 1 | 0 | 199.6 |
| 2005 Q2 | 4,731 | 0 | 0 | 0.0 |
| 2005 Q1 | 4,720 | 0 | 0 | 0.0 |
| 2004 Q4 | 9,198 | 0 | 0 | 0.0 |
| 2004 Q3 | 8,958 | 1 | 0 | 111.6 |
| 2004 Q2 | 7,979 | 0 | 0 | 0.0 |
| 2004 Q1 | 4,830 | 2 | 0 | 414.1 |
| 2003 Q4 | 4,047 | 0 | 0 | 0.0 |
| 2003 Q3 | 5,306 | 0 | 0 | 0.0 |
| 2003 Q2 | 2,578 | 0 | 0 | 0.0 |
| 2003 Q1 | 3,594 | 2 | 2 | 556.5 |
| 2002 Q4 | 4,262 | 0 | 0 | 0.0 |
| 2002 Q3 | 5,432 | 0 | 0 | 0.0 |
| 2002 Q2 | 5,359 | 0 | 0 | 0.0 |
| 2002 Q1 | 5,691 | 7 | 0 | 1230.0 |
| 2001 Q4 | 7,055 | 0 | 0 | 0.0 |
| 2001 Q3 | 6,839 | 0 | 0 | 0.0 |
| 2001 Q2 | 4,786 | 0 | 0 | 0.0 |
| 2001 Q1 | 9,056 | 3 | 2 | 331.3 |
| 2000 Q4 | 4,271 | 0 | 0 | 0.0 |
| 2000 Q3 | 7,466 | 0 | 0 | 0.0 |
| 2000 Q2 | 5,879 | 0 | 0 | 0.0 |
| 2000 Q1 | 5,515 | 0 | 0 | 0.0 |
No fatalities recorded at this mine.
Reportable incidents
13 on file2026 · 1 incident
2021 · 1 incident
February 20, 2021
CO · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDTOOLS (NONPOWERED)
BURNCO Colorado LLC · Struck by... (Not Elsewhere Classified)
Worker was cutting a rubber boot on the wash plant using a razor blade in right hand. While cutting, the blade slipped and cut left hand ring finger.
2020 · 1 incident
BURNCO Colorado LLC · Fall to the walkway or working surface
The worker slipped and fell on tailbone. The conditions were very slick due to ice and snowpack.
2019 · 1 incident
May 23, 2019
CO · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDLING OF MATERIALS
BURNCO Colorado LLC · Over-exertion in lifting objects
Mine worker was picking chunks of mud from the feed conveyor belt. Worker felt a strain and soreness in upper wrist/forearm area.
2018 · 1 incident
March 24, 2018
CO · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDLING OF MATERIALS
BURNCO Colorado LLC · Over-exertion in pulling or pushing objects
The miner was working with another worker to move a 400 lbs. roll of conveyor belting and hurt back.
2017 · 2 incidents
December 7, 2017
CO · Metal/Non-Metal
front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator
POWERED HAULAGE
BURNCO Colorado LLC · Struck against a moving object
The right side ride control went out on the loader causing the seat to bounce.
November 7, 2017
CO · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDLING OF MATERIALS
BURNCO Colorado LLC · Over-exertion (Not Elsewhere Classified)
The miner was picking mud at a mud picking station. As the miner was reaching to throw a chunk of mud from the conveyor, ee strained back.
2014 · 1 incident
November 5, 2014
CO · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
HANDLING OF MATERIALS
BURNCO Colorado LLC · Struck by... (Not Elsewhere Classified)
THE MINER WAS PUMPING WATER INTO A WATER TRUCK. THE CONNECTION BLEW APART AND STRUCK THE MINER ON THE LEG.
2009 · 1 incident
February 2, 2009
CO · Metal/Non-Metal
warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator
HANDLING OF MATERIALS
Hall Irwin Corporation · Struck by falling object
The employee was taking apart a conveyor stand for transfer when the support fell on his foot breaking a bone in his right 5th digit. The employee was wearing steel toed shoes.
2005 · 1 incident
June 24, 2005
CO · Metal/Non-Metal
assayer, geologist, metallurgist, engineer, engineer management
HANDLING OF MATERIALS
Hall-Irwin Construction Company · Struck by... (Not Elsewhere Classified)
THE EMPLOYEE WAS HELPING TO REMOVE A SCREEN FROM THEIR CRUSHER AND IT SLIPPED CATCHING HIS FINGER AND BREAKING IT.
2003 · 1 incident
November 17, 2003
CO · Metal/Non-Metal
front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator
EE WAS BUILDING BERMS ON A STOCKPILE. HE SAYS HE HAD HIS LOADER BUCKET 1/2 FULL WHEN HE DROVE BACK OVER A DIVOT HE CREATED CAUSING THE BUCKET TO HIT THE GROUND WHICH HURT HIS NECK. THE INCIDEN T OCCURRED ON MONDAY & WAS NOT REPORTED UNTIL FRIDAY.
2000 · 1 incident
September 7, 2000
CO · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
HANDLING OF MATERIALS
Hall-Irwin Construction Company · Caught in, under or between a moving and a stationary object
THE EE WAS REMOVING A TRAILER HITCH FROM A PICKUP WHEN THE HITCH AND TRAILER ROLLED FORWARD PINNING THE EMPLOYEE'S FINGER AGAINST THE PICKUP.
1999 · 1 incident
April 12, 1999
CO · Metal/Non-Metal
gathering arm loader operator, loading machine operator, joy loader operator
SLIP OR FALL OF PERSON
Hall-Irwin Construction Company · Over-exertion (Not Elsewhere Classified)
EMPLOYEE SAW THAT THE CRUSHER WAS FILLING UP ANDHE HURRIED DOWN THE LADDER OF HIS LOADER. EMPLOYEE STEPPED DOWN ABD FELT HIS ANKLE SHIFT OVER AND POP.