Mining Incidents

Bonito: 159 MSHA citations Metal/Non-Metal

Kalamazoo Materials · Surface
Oracle, Pinal County, AZ  ·  Abandoned
MSHA Mine ID: 0202318

Bonito has $83K in proposed MSHA penalties and $0 outstanding across 5 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
8
Years on record
1987–1995
Latest incident
May 1995
Compliance record
MSHA citations since 2001
159
citations
60
significant & substantial
$82,769
proposed penalties
$70,111
paid to date
85% of proposed penalties paid to date, a $12,658 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
63
inspections on record
750
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: 750 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Bonito has $83K in proposed MSHA penalties and $0 outstanding across 5 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.
$83K
proposed penalties
$70K
current assessed
$70K
paid to date
$0
outstanding
159 assessments are final orders; 5 contested dockets.
Of $28K in penalties contested before the Commission, $15K was upheld in final decisions.
As of the most recent assessment on 2023-04-06.
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.
37.7%
significant & substantial
5.0%
high negligence or reckless
37.7%
reasonably likely or greater
44.7%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 3.8% low, 91.2% moderate, 5.0% 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.
8 citations taken to the federal commission · 5% of citations on record
  • Settled 7 · 88%
  • Stood as issued 1 · 13%
100%
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 6 decided S&S contests · industry: 79%
45%
Penalty reduction in decided contests
$28K proposed, $15K 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 2014-11-13.
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 2011-166M Settlement Lesnick 2011 $11K → $8K
WEST 2012-266M Settlement Lesnick 2012 $7K → $4K
WEST 2013-965M Settlement Miller 2013 $7K → $2K
WEST 2011-1183M Settlement Lesnick 2012 $2K → $1K
WEST 2015-0140 Dismissal Moran 2015 $127 → $127
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: 2019-08-01, 7 years ago
0%
of limit-tested samples over the exposure limit
11
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg10
  • Quartz, respirable, >1% Qtz1
Show the individual readings (11)
Date Contaminant Concentration Limit Conc / limit Occupation
2019-08-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-08-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-07-15 Respirable dust, <.1mg 0 Crusher Oper/Worker
2015-07-15 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-06-28 Respirable dust, <.1mg 0 Supervisor, Co. Official
2012-06-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-06-28 Respirable dust, <.1mg 0 Complete Load-Haul-Dump
2009-12-01 Respirable dust, <.1mg 0 Crusher Oper/Worker
2009-12-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2007-08-01 Quartz, respirable, >1% Qtz 0.21 0.53 0.40 Truck Driver
2007-08-01 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.

Bonito recorded 0.00 reportable injury cases per 100 full-time workers in 2002.

Injury rate, 2002
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 4.17 and the all-US-mining average was 5.05 cases per 100 workers.
In Arizona, metal and nonmetal mining averaged 3.22 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
2002 * 0.00 0.00 0.000
2001 * 0.00 0.00 0.000
2000 * 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. Kalamazoo Materials 1986 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2023 1
2022 2
2021 2
2020 2
2019 2
2018 2
2017 3
2016 3
2015 3
2014 3
2013 4
2012 4
2011 4
2010 4
2009 7
2008 6
2007 6
2006 5
2005 7
2004 7
2003 9
2002 9
2001 9
2000 9
Source: MSHA quarterly employment and production, updated weekly.

Bonito sits in Pinal County, Arizona, where the Census mining category is 0.8% 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.
Pinal County, Arizona · Population 449,219
0.8%
Mining share of county employment
$77,588
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
2023 Q3 0 0 0
2023 Q2 0 1 0
2023 Q1 1,103 0 0 0.0
2022 Q4 0 0 0
2022 Q3 191 0 0 0.0
2022 Q2 177 4 2 22598.9
2022 Q1 434 0 0 0.0
2021 Q4 30 0 0 0.0
Show 87 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2021 Q3 206 8 6 38835.0
2021 Q2 226 0 0 0.0
2021 Q1 412 2 1 4854.4
2020 Q4 753 0 0 0.0
2020 Q3 500 0 0 0.0
2020 Q2 572 3 1 5244.8
2020 Q1 980 5 0 5102.0
2019 Q4 1,104 0 0 0.0
2019 Q3 1,285 3 0 2334.6
2019 Q2 1,285 0 0 0.0
2019 Q1 1,134 0 0 0.0
2018 Q4 1,112 3 0 2697.8
2018 Q3 1,035 0 0 0.0
2018 Q2 1,336 2 2 1497.0
2018 Q1 1,971 2 0 1014.7
2017 Q4 1,466 0 0 0.0
2017 Q3 1,831 0 0 0.0
2017 Q2 1,900 0 0 0.0
2017 Q1 1,752 1 0 570.8
2016 Q4 1,733 0 0 0.0
2016 Q3 1,932 0 0 0.0
2016 Q2 1,950 0 0 0.0
2016 Q1 1,935 0 0 0.0
2015 Q4 1,785 0 0 0.0
2015 Q3 1,902 5 1 2628.8
2015 Q2 1,923 0 0 0.0
2015 Q1 1,945 2 0 1028.3
2014 Q4 1,958 0 0 0.0
2014 Q3 1,999 7 4 3501.8
2014 Q2 1,921 0 0 0.0
2014 Q1 1,585 0 0 0.0
2013 Q4 1,239 1 0 807.1
2013 Q3 2,506 0 0 0.0
2013 Q2 2,536 5 1 1971.6
2013 Q1 1,964 0 0 0.0
2012 Q4 2,220 3 1 1351.4
2012 Q3 2,231 0 0 0.0
2012 Q2 2,370 4 2 1687.8
2012 Q1 1,795 5 4 2785.5
2011 Q4 1,497 0 0 0.0
2011 Q3 2,006 0 0 0.0
2011 Q2 2,379 5 2 2101.7
2011 Q1 1,792 0 0 0.0
2010 Q4 1,782 8 2 4489.3
2010 Q3 2,529 0 0 0.0
2010 Q2 2,788 11 7 3945.5
2010 Q1 2,366 0 0 0.0
2009 Q4 3,474 8 5 2302.8
2009 Q3 5,896 0 0 0.0
2009 Q2 3,167 13 4 4104.8
2009 Q1 2,928 4 0 1366.1
2008 Q4 2,802 0 0 0.0
2008 Q3 3,166 0 0 0.0
2008 Q2 3,218 0 0 0.0
2008 Q1 3,151 5 3 1586.8
2007 Q4 3,323 6 2 1805.6
2007 Q3 4,005 2 0 499.4
2007 Q2 3,935 0 0 0.0
2007 Q1 3,903 0 0 0.0
2006 Q4 3,202 3 0 936.9
2006 Q3 1,411 1 0 708.7
2006 Q2 2,888 0 0 0.0
2006 Q1 3,207 0 0 0.0
2005 Q4 3,770 7 1 1856.8
2005 Q3 3,962 0 0 0.0
2005 Q2 3,734 0 0 0.0
2005 Q1 4,004 1 0 249.8
2004 Q4 3,803 0 0 0.0
2004 Q3 3,998 0 0 0.0
2004 Q2 3,644 0 0 0.0
2004 Q1 3,767 3 1 796.4
2003 Q4 4,391 0 0 0.0
2003 Q3 4,717 0 0 0.0
2003 Q2 4,193 4 4 954.0
2003 Q1 5,920 0 0 0.0
2002 Q4 5,403 0 0 0.0
2002 Q3 6,582 4 2 607.7
2002 Q2 5,614 0 0 0.0
2002 Q1 6,027 0 0 0.0
2001 Q4 6,151 0 0 0.0
2001 Q3 6,375 0 0 0.0
2001 Q2 7,079 8 2 1130.1
2001 Q1 7,925 0 0 0.0
2000 Q4 7,456 0 0 0.0
2000 Q3 6,692 0 0 0.0
2000 Q2 6,365 0 0 0.0
2000 Q1 6,553 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

8 on file

1995 · 1 incident

1990 · 1 incident

1989 · 3 incidents

March 24, 1989 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Kalamazoo Materials · Struck against a moving object

DURING COURSE OF DAY HIT KNEE.

March 16, 1989 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator MACHINERY
Kalamazoo Materials · Flash burns (welding)

FLASH BURNS FROM WELDING.

March 14, 1989 AZ · Metal/Non-Metal welder (shop) MACHINERY
Kalamazoo Materials · Struck by... (Not Elsewhere Classified)

WELDER WAS GRINDING A PIECE OF STEEL WHEN HE LOST CONTROL OF GRINDER.

1988 · 1 incident

March 28, 1988 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Kalamazoo Materials · Caught in, under or between a moving and a stationary object

EMPLOYEE SAID THAT HE CAUGHT HIS KNEE ON SCREN WIRE CLIMBING DOWN LADDER PLEASE NOT THAT UPON INVESTIGATION FROM SUPERVISOR NO WIRE WAS PRESENT REPORT ALSO FILLED WITH WORKERS COMPENSATION & VALIDITY OF CLAIM HAS BEEN DOUBLTED

1987 · 2 incidents

November 30, 1987 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Kalamazoo Materials · Struck against stationary object

REMOVING SCREEN3FROM SCREEN BOX HE BENT OVER TO PICK UP SCREEN,HARD HAT THEN FELL OFF OF HEAD,PROCEEDED TO MOVE SCREEN INTO LOAD BUCKET WITHOUT HARD HAT. WHEN HE WENT TO RETRIEVE HARD HAT HE H T HEAD(CENTER) 2N MATERIAL CHUTE.RESULTING IN 2" CUT.

February 27, 1987 AZ · Metal/Non-Metal driller, highwall helper, highwall drill helper HANDTOOLS (NONPOWERED)
Kalamazoo Materials · Struck by... (Not Elsewhere Classified)

I NAME WAS CHAN1ING A BOLT ON THE 966 LOADER TRACTOR WHEN THE CUTTING EDGE SPUN CUTTING THROUGH HIS GLOVE TO HIS PALM.