Walker Butte Mining Company, L.L.C. has $21K in proposed MSHA penalties and $557 outstanding across 9 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
17
Years on record
1996–2010
Latest incident
Sep 2010
Compliance record
MSHA citations since 2000
69
citations
18
significant & substantial
$20,916
proposed penalties
$18,461
paid to date
88% of proposed penalties paid to date, a $2,455 gap.
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: 391 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Walker Butte Mining Company, L.L.C. has $21K in proposed MSHA penalties and $557 outstanding across 9 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.
$21K
proposed penalties
$19K
current assessed
$18K
paid to date
$557
outstanding
68 assessments are final orders; 9 contested dockets.
Of $10K in penalties contested before the Commission, $7K was upheld in final decisions.
As of the most recent assessment on 2013-08-13.
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.
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.
13citations taken to the federal commission · 19% of citations on record
Settled
12 · 92%
Vacated or withdrawn
1 · 8%
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.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%
30%
Penalty reduction in decided contests
$4K proposed, $3K 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 2010-12-13.
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.
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: 2009-04-28, 17 years ago
0%
of limit-tested samples over the exposure limit
3
samples
1
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz1
Respirable dust, <.1mg1
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (3)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2009-04-28
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-04-28
Quartz, respirable, >1% Qtz
0.12
0.72
0.17
Crusher Oper/Worker
2009-04-28
Unlisted Particulate, respirable, <1% Qtz
0.12
Truck Driver
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.
Walker Butte Mining Company, L.L.C. recorded 0.00 reportable injury cases per 100 full-time workers in 2013.
Injury rate, 2013
ⓘ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 2.46 and the all-US-mining average was 2.99 cases per 100 workers.
In Arizona, metal and nonmetal mining averaged 2.37 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
2013 *
0.00
0.00
0.000
2012 *
0.00
0.00
0.000
2011 *
0.00
0.00
0.000
2010 *
19.38
19.38
0.000
2008 *
0.00
0.00
0.000
2007 *
6.03
0.00
0.000
2006 *
0.00
0.00
0.000
2005 *
6.79
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2014
6
2013
8
2012
7
2011
7
2010
7
2009
6
2008
11
2007
15
2006
14
2005
13
2004
12
2003
12
2002
12
2001
12
2000
12
Source: MSHA quarterly employment and production, updated weekly.
Walker Butte Mining Company, L.L.C. 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
2014 Q1
3,434
0
0
0.0
2013 Q4
8,529
0
0
0.0
2013 Q3
6,347
3
1
472.7
2013 Q2
5,940
0
0
0.0
2013 Q1
5,860
0
0
0.0
2012 Q4
6,128
0
0
0.0
2012 Q3
5,296
3
0
566.5
2012 Q2
5,478
0
0
0.0
Show 49 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2012 Q1
5,047
0
0
0.0
2011 Q4
5,062
0
0
0.0
2011 Q3
5,357
0
0
0.0
2011 Q2
5,124
1
1
195.2
2011 Q1
5,236
0
0
0.0
2010 Q4
5,232
3
0
573.4
2010 Q3
5,082
1
0
196.8
2010 Q2
5,319
0
0
0.0
2010 Q1
5,002
0
0
0.0
2009 Q4
4,824
0
0
0.0
2009 Q3
4,925
0
0
0.0
2009 Q2
4,167
4
0
959.9
2009 Q1
5,508
4
0
726.2
2008 Q4
6,614
0
0
0.0
2008 Q3
6,259
0
0
0.0
2008 Q2
6,640
0
0
0.0
2008 Q1
7,821
1
0
127.9
2007 Q4
8,022
1
0
124.7
2007 Q3
8,384
7
1
834.9
2007 Q2
8,511
0
0
0.0
2007 Q1
8,229
0
0
0.0
2006 Q4
8,440
10
5
1184.8
2006 Q3
8,417
0
0
0.0
2006 Q2
8,159
0
0
0.0
2006 Q1
7,679
0
0
0.0
2005 Q4
7,959
0
0
0.0
2005 Q3
7,281
0
0
0.0
2005 Q2
7,419
0
0
0.0
2005 Q1
6,801
0
0
0.0
2004 Q4
6,538
0
0
0.0
2004 Q3
6,635
1
1
150.7
2004 Q2
6,980
1
0
143.3
2004 Q1
6,685
0
0
0.0
2003 Q4
7,153
0
0
0.0
2003 Q3
6,600
0
0
0.0
2003 Q2
6,318
7
1
1107.9
2003 Q1
5,613
0
0
0.0
2002 Q4
6,603
1
0
151.4
2002 Q3
6,282
0
0
0.0
2002 Q2
6,744
2
0
296.6
2002 Q1
6,738
0
0
0.0
2001 Q4
6,587
7
6
1062.7
2001 Q3
6,766
0
0
0.0
2001 Q2
5,793
0
0
0.0
2001 Q1
5,787
0
0
0.0
2000 Q4
5,181
0
0
0.0
2000 Q3
5,380
10
1
1858.7
2000 Q2
5,809
0
0
0.0
2000 Q1
5,371
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
17 on file
2010 · 2 incidents
September 28, 2010AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorMACHINERY
Grinding a piece of metal 3/8" diameter off return roller guard. Metal shavings got in his left eye. He did have on safety glasses at the time. Metal shavings probably got in eyebrow and when removing safety glasses, got in the eye.
August 11, 2010AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
Cleaning off grizzly bars - swinging sledge hammer, pulled muscle in back or pinched nerve. Said he wanted to go to doctor to get checked out 8/23/10 12:00pm.
2007 · 1 incident
July 2, 2007AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
Atv's or Quads-tresspassing onto the property (nightwatchman confronted one or stopped one, nightwatchman had a shotgun, gun accidently went off killing one of the riders. No witnesses on company behalf. Non mine related.
2005 · 1 incident
September 15, 2005AZ · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorHANDTOOLS (NONPOWERED)
Installing new conveyor belt, cut belt to size in order to fasten together. When cutting belt he was kneeling on the belt pulling knife towards himself, knife slipped out and he stabbed it in his right leg. Cut about 1" to 1 1/2" long and 1/2" wide.
2004 · 2 incidents
August 13, 2004AZ · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
USING UTILITY KNIFE TO CUT A PIECE OF CONVEYOR BELT SLIPPED CUT LEFT PALLIN OF HAND.
August 18, 2000AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
EMPLOYEE WAS BOARDING LOADER WHEN LEFT FOOT SLIPPED OFF BOTTOM STEP. HE LANDED TOTALLY ON LEFT LEG. HE IMMEDIATELY FELT SHARP PAIN IN SMALL OF BACK AND DOWN RIGHT LEG.
1998 · 1 incident
April 24, 1998AZ · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDTOOLS (NONPOWERED)