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: 177 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Portable Plant #1 has $6K 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.
$6K
proposed penalties
$6K
current assessed
$6K
paid to date
$0
outstanding
39 assessments are final orders; 1 contested dockets.
Of $700 in penalties contested before the Commission, $700 was upheld in final decisions.
As of the most recent assessment on 2013-05-15.
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.
1citations taken to the federal commission · 3% of citations on record
Settled
1 · 100%
0%
Penalty reduction in decided contests
$700 proposed, $700 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2006-11-09.
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: 2011-04-27, 15 years ago
0%
of limit-tested samples over the exposure limit
6
samples
5
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz5
Respirable dust, <.1mg1
Show the individual readings (6)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2011-04-27
Quartz, respirable, >1% Qtz
0.37
1.18
0.31
Mechanic
2011-04-27
Respirable dust, <.1mg
0
Front-end Loader Operator
2011-04-27
Quartz, respirable, >1% Qtz
0.2
0.68
0.29
Crusher Oper/Worker
2006-05-16
Quartz, respirable, >1% Qtz
0.34
2.41
0.14
Front-end Loader Operator
2006-05-16
Quartz, respirable, >1% Qtz
0.41
0.78
0.53
Crusher Oper/Worker
2006-05-16
Quartz, respirable, >1% Qtz
0.12
0.63
0.19
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2013
5
2012
5
2011
6
2010
7
2009
6
2008
6
2007
5
2006
5
2005
9
2000
0
Source: MSHA quarterly employment and production, updated weekly.
Portable Plant #1 sits in Maricopa County, Arizona, where the Census mining category is 0.2% 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.
Maricopa County, Arizona · Population 4,491,987
0.2%
Mining share of county employment
$85,518
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
2013 Q2
3,373
3
1
889.4
2013 Q1
2,707
0
0
0.0
2012 Q4
2,919
0
0
0.0
2012 Q3
2,815
5
1
1776.2
2012 Q2
3,716
0
0
0.0
2012 Q1
3,360
1
0
297.6
2011 Q4
3,040
0
0
0.0
2011 Q3
4,251
0
0
0.0
Show 26 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2011 Q2
4,253
2
1
470.3
2011 Q1
3,611
0
0
0.0
2010 Q4
4,061
0
0
0.0
2010 Q3
3,980
0
0
0.0
2010 Q2
4,905
2
2
407.7
2010 Q1
4,072
0
0
0.0
2009 Q4
4,085
0
0
0.0
2009 Q3
4,572
0
0
0.0
2009 Q2
4,066
0
0
0.0
2009 Q1
4,095
0
0
0.0
2008 Q4
5,419
1
0
184.5
2008 Q3
4,281
0
0
0.0
2008 Q2
3,116
0
0
0.0
2008 Q1
2,597
1
0
385.1
2007 Q4
2,852
0
0
0.0
2007 Q3
2,578
0
0
0.0
2007 Q2
3,195
0
0
0.0
2007 Q1
3,895
3
1
770.2
2006 Q4
4,054
0
0
0.0
2006 Q3
4,889
0
0
0.0
2006 Q2
2,277
16
0
7026.8
2006 Q1
2,144
0
0
0.0
2005 Q4
1,664
1
1
601.0
2005 Q3
6,464
0
0
0.0
2005 Q2
5,655
4
1
707.3
2000 Q1
0
0
0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2008 · 1 incident
February 19, 2008AZ · Metal/Non-Metalforklift operatorPOWERED HAULAGE
While lifting the cone liner approx. 3', employee was standing at the side of the liner checking the bottom rim when the off-side weld broke on the lifting eye shifting the liner knocking employee to a knee and the other weld broke causing the liner to fall on the employee's right knee and right forearm.