Mining Incidents

Tangerine Road Pit: 99 MSHA citations Metal/Non-Metal

Controlled by Granite Construction Inc
Mesa, Pima County, AZ  ·  Active
MSHA Mine ID: 0200649

Tangerine Road Pit has $12K 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
8
Years on record
1993–2019
Latest incident
Jul 2019
Compliance record
MSHA citations since 2000
99
citations
25
significant & substantial
$11,745
proposed penalties
$11,745
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
70
inspections on record
985
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: 985 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Tangerine Road Pit has $12K 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.
$12K
proposed penalties
$12K
current assessed
$12K
paid to date
$0
outstanding
99 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-04-17.
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.
25.3%
significant & substantial
0.0%
high negligence or reckless
25.3%
reasonably likely or greater
60.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 18.2% low, 81.8% moderate, 0.0% 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: 2025-07-30
33%
of limit-tested samples over the exposure limit
34
samples
12
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz124 over
  • Respirable dust, <.1mg22
Show the individual readings (34)
Date Contaminant Concentration Limit Conc / limit Occupation
2021-05-20 Quartz, respirable, >1% Qtz 0.99 0.65 1.52 Truck Driver
2012-10-16 Quartz, respirable, >1% Qtz 0.91 0.69 1.32 Cleanup Man
2010-09-15 Quartz, respirable, >1% Qtz 1.31 0.53 2.47 Laborer, Bullgang
2001-07-11 Quartz, respirable, >1% Qtz 0.44 0.43 1.02 Cleanup Man
2025-07-30 Respirable dust, <.1mg 0 Utility Man
2025-07-30 Respirable dust, <.1mg 0 Front-end Loader Operator
2025-07-30 Respirable dust, <.1mg 0 Crusher Oper/Worker
2023-11-21 Respirable dust, <.1mg 0 Bulldozer Operator
2023-11-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2023-11-21 Respirable dust, <.1mg 0 Washer Operator
2023-11-21 Quartz, respirable, >1% Qtz 0.16 0.54 0.30 Crusher Oper/Worker
2022-10-19 Respirable dust, <.1mg 0 Washer Operator
2022-10-19 Respirable dust, <.1mg 0 Truck Driver
2022-10-19 Quartz, respirable, >1% Qtz 0.21 0.44 0.48 Crusher Oper/Worker
2021-06-17 Respirable dust, <.1mg 0 Truck Driver
2021-05-20 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-05-20 Respirable dust, <.1mg 0 Front-end Loader Operator
2017-10-17 Quartz, respirable, >1% Qtz 0.26 1.17 0.22 Cleanup Man
2017-10-17 Quartz, respirable, >1% Qtz 0.36 0.59 0.61 Crusher Oper/Worker
2017-10-17 Respirable dust, <.1mg 0 Mechanic
2014-03-26 Respirable dust, <.1mg 0 Washer Operator
2014-03-26 Respirable dust, <.1mg 0 Laborer, Bullgang
2014-03-26 Respirable dust, <.1mg 0 Front-end Loader Operator
2013-04-09 Respirable dust, <.1mg 0 Bulldozer Operator
2013-04-09 Quartz, respirable, >1% Qtz 0.17 0.66 0.26 Cleanup Man
2013-04-09 Quartz, respirable, >1% Qtz 0.21 0.89 0.24 Crusher Oper/Worker
2012-10-16 Respirable dust, <.1mg 0 Bulldozer Operator
2012-10-16 Quartz, respirable, >1% Qtz 0.17 0.96 0.18 Crusher Oper/Worker
2011-01-26 Quartz, respirable, >1% Qtz 0.42 0.59 0.71 Laborer, Bullgang
2010-09-15 Respirable dust, <.1mg 0 Bulldozer Operator
2010-09-15 Respirable dust, <.1mg 0 Front-end Loader Operator
2001-07-11 Respirable dust, <.1mg 0 Cleanup Man
2001-07-11 Respirable dust, <.1mg 0 Crusher Oper/Worker
2001-07-11 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.

Tangerine Road Pit recorded 0.00 reportable injury cases per 100 full-time workers in 2024.

Injury rate, 2024
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
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 1.77 and the all-US-mining average was 2.08 cases per 100 workers.
In Arizona, metal and nonmetal mining averaged 2.18 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
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 * 0.00 0.00 0.000
2018 * 0.00 0.00 0.000
2017 * 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. Desert Materials Company 1950 to 1979
  2. Massey Sand & Rock Company 1979 to 1986
  3. Tarmac California Inc 1986 to 1992
  4. Granite Construction Company 1992 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 13
2025 14
2024 14
2023 17
2022 15
2021 17
2020 17
2019 17
2018 17
2017 16
2016 11
2015 14
2014 12
2013 25
2012 18
2011 11
2010 13
2009 16
2008 18
2007 18
2006 18
2005 17
2004 11
2003 8
2002 15
2001 13
2000 15
Source: MSHA quarterly employment and production, updated weekly.

Tangerine Road Pit sits in Pima County, Arizona, where the Census mining category is 0.6% 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.
Pima County, Arizona · Population 1,049,947
0.6%
Mining share of county employment
$67,929
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 3,714 0 0 0.0
2026 Q1 5,361 0 0 0.0
2025 Q4 4,720 0 0 0.0
2025 Q3 4,508 0 0 0.0
2025 Q2 4,930 0 0 0.0
2025 Q1 1,811 0 0 0.0
2024 Q4 2,015 0 0 0.0
2024 Q3 6,346 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 6,798 3 0 441.3
2024 Q1 6,726 0 0 0.0
2023 Q4 6,423 0 0 0.0
2023 Q3 7,980 0 0 0.0
2023 Q2 9,059 0 0 0.0
2023 Q1 8,003 0 0 0.0
2022 Q4 6,769 0 0 0.0
2022 Q3 7,521 0 0 0.0
2022 Q2 9,288 1 1 107.7
2022 Q1 9,463 0 0 0.0
2021 Q4 9,293 0 0 0.0
2021 Q3 9,367 0 0 0.0
2021 Q2 6,775 1 1 147.6
2021 Q1 8,495 0 0 0.0
2020 Q4 7,187 0 0 0.0
2020 Q3 7,655 1 0 130.6
2020 Q2 7,829 0 0 0.0
2020 Q1 7,529 0 0 0.0
2019 Q4 6,845 0 0 0.0
2019 Q3 7,572 1 0 132.1
2019 Q2 7,431 0 0 0.0
2019 Q1 7,106 1 0 140.7
2018 Q4 6,409 0 0 0.0
2018 Q3 7,032 0 0 0.0
2018 Q2 8,167 1 0 122.4
2018 Q1 7,448 0 0 0.0
2017 Q4 8,082 2 0 247.5
2017 Q3 7,435 0 0 0.0
2017 Q2 5,834 0 0 0.0
2017 Q1 5,616 0 0 0.0
2016 Q4 4,546 0 0 0.0
2016 Q3 4,360 0 0 0.0
2016 Q2 4,105 0 0 0.0
2016 Q1 2,550 1 0 392.2
2015 Q4 3,273 0 0 0.0
2015 Q3 4,394 0 0 0.0
2015 Q2 4,396 6 0 1364.9
2015 Q1 4,554 2 0 439.2
2014 Q4 4,238 0 0 0.0
2014 Q3 5,185 0 0 0.0
2014 Q2 5,087 0 0 0.0
2014 Q1 4,165 1 0 240.1
2013 Q4 5,313 0 0 0.0
2013 Q3 5,347 0 0 0.0
2013 Q2 6,934 1 0 144.2
2013 Q1 2,684 0 0 0.0
2012 Q4 5,376 2 0 372.0
2012 Q3 4,953 0 0 0.0
2012 Q2 4,141 1 0 241.5
2012 Q1 2,708 0 0 0.0
2011 Q4 2,442 3 0 1228.5
2011 Q3 2,508 0 0 0.0
2011 Q2 2,595 0 0 0.0
2011 Q1 3,666 0 0 0.0
2010 Q4 2,236 1 0 447.2
2010 Q3 3,843 2 0 520.4
2010 Q2 3,768 0 0 0.0
2010 Q1 2,444 5 3 2045.8
2009 Q4 3,879 0 0 0.0
2009 Q3 3,919 0 0 0.0
2009 Q2 4,979 4 0 803.4
2009 Q1 4,367 0 0 0.0
2008 Q4 4,700 0 0 0.0
2008 Q3 7,892 0 0 0.0
2008 Q2 6,942 0 0 0.0
2008 Q1 6,710 2 0 298.1
2007 Q4 5,867 0 0 0.0
2007 Q3 6,440 0 0 0.0
2007 Q2 6,616 2 0 302.3
2007 Q1 10,963 0 0 0.0
2006 Q4 10,038 1 0 99.6
2006 Q3 8,134 1 0 122.9
2006 Q2 10,203 0 0 0.0
2006 Q1 9,350 0 0 0.0
2005 Q4 9,690 3 0 309.6
2005 Q3 9,205 5 2 543.2
2005 Q2 9,776 0 0 0.0
2005 Q1 7,493 4 0 533.8
2004 Q4 6,965 3 1 430.7
2004 Q3 5,133 0 0 0.0
2004 Q2 5,344 1 0 187.1
2004 Q1 4,403 2 1 454.2
2003 Q4 4,095 0 0 0.0
2003 Q3 4,536 5 2 1102.3
2003 Q2 3,610 0 0 0.0
2003 Q1 3,986 0 0 0.0
2002 Q4 3,920 0 0 0.0
2002 Q3 7,140 3 1 420.2
2002 Q2 7,829 6 1 766.4
2002 Q1 1,422 0 0 0.0
2001 Q4 6,240 0 0 0.0
2001 Q3 6,618 10 4 1511.0
2001 Q2 5,112 0 0 0.0
2001 Q1 4,100 0 0 0.0
2000 Q4 3,851 0 0 0.0
2000 Q3 4,895 0 0 0.0
2000 Q2 5,524 9 7 1629.3
2000 Q1 4,624 2 1 432.5
No fatalities recorded at this mine.

Reportable incidents

8 on file

2019 · 1 incident

July 16, 2019 AZ · Metal/Non-Metal mechanic helper DISORDERS (PHYSICAL AGENTS)
Granite Construction Company · Contact with heat

Employee got heat exhaustion, ambient temperature 109 degrees. Headache, vomiting, dehydration, cramping.

2007 · 1 incident

May 11, 2007 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Granite Construction Company · Struck by... (Not Elsewhere Classified)

Utility knife cut through a piece of conveyor belt easier than expected. Utility knife had new blade and employee applied too much pressure. Placed on modified duty.

2006 · 1 incident

August 30, 2006 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Granite Construction Company · Fall to the walkway or working surface

Employee reported injury and requested to see dr on 9/8/06 stating he had pulled a muscle in groin area due to slipping in mud. Placed on modified duty.

2004 · 1 incident

December 22, 2004 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Granite Construction Company · Fall onto or against objects

EE CLAIMS HE FELL ON OPERATING LEVERS OF 631 SCRAPER GRANITE INFORMED OF INJURY WHEN WE REC'D BILLING FROM HOSPITAL 1/13/05

2001 · 1 incident

October 17, 2001 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Granite Construction Company · Struck by... (Not Elsewhere Classified)

CUT FINGER WHILE CHQANGING CUTTING EDGE.

2000 · 1 incident

September 6, 2000 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Granite Construction Company · Struck by... (Not Elsewhere Classified)

WHILE LOOSENING A BOLT WITH AN IMPACT WRENCH THE BOLT SPUN AND CUT EMPLOYEE'S LEFT MIDDLE FINGER. FINGR REQUIRED STITCHES. EMPLOYEE WAS NOT WEAR GLOVES.

1999 · 1 incident

November 10, 1999 AZ · Metal/Non-Metal carpenter MACHINERY
Granite Construction Company · Struck by... (Not Elsewhere Classified)

WHILE CUTTING A 2X4 WITH CIRCULAR SAW (SAW GUAR WAS IN A UP/OPEN POSITION) THE SAW CAME INTO CONTACT WITH RIGHT LOWER LEG-CAUSING A DEEP LACERATION.

1993 · 1 incident

January 29, 1993 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Granite Construction Company · Over-exertion in pulling or pushing objects

WHILE EMPLOYEE WAS REPLACING THE BELT ON TEH SHORT HEAD CONE AT THE ROCK PLANT, HE PULLED A MUSCLE.