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: 347 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Mobile Plant #3 has $23K in proposed MSHA penalties and $0 outstanding across 3 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.
$23K
proposed penalties
$14K
current assessed
$14K
paid to date
$0
outstanding
46 assessments are final orders; 3 contested dockets.
Of $15K in penalties contested before the Commission, $6K was upheld in final decisions.
As of the most recent assessment on 2022-10-05.
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.
14citations taken to the federal commission · 30% of citations on record
Settled
13 · 93%
Vacated or withdrawn
1 · 7%
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.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 8 decided S&S contests · industry: 79%
60%
Penalty reduction in decided contests
$15K proposed, $6K 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2012-10-31.
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: 2015-07-16, 11 years ago
30%
of limit-tested samples over the exposure limit
12
samples
10
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz103 over
Respirable dust, <.1mg2
Show the individual readings (12)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2007-08-10
Quartz, respirable, >1% Qtz
0.38
0.34
1.12
Crusher Oper/Worker
2005-06-15
Quartz, respirable, >1% Qtz
0.26
0.24
1.08
Cleanup Man
2004-07-08
Quartz, respirable, >1% Qtz
0.32
0.32
1.00
Crusher Oper/Worker
2015-07-16
Quartz, respirable, >1% Qtz
0.22
0.58
0.38
Front-end Loader Operator
2015-07-16
Quartz, respirable, >1% Qtz
0.13
0.3
0.43
Crusher Oper/Worker
2007-08-10
Quartz, respirable, >1% Qtz
0.37
0.4
0.93
Front-end Loader Operator
2007-08-10
Quartz, respirable, >1% Qtz
0.17
0.59
0.29
Front-end Loader Operator
2005-06-15
Quartz, respirable, >1% Qtz
0.22
0.29
0.76
Front-end Loader Operator
2005-06-15
Respirable dust, <.1mg
0
Mechanic
2005-06-15
Quartz, respirable, >1% Qtz
0.3
0.32
0.94
Crusher Oper/Worker
2004-07-08
Respirable dust, <.1mg
0
Dragline Operator
2004-07-08
Quartz, respirable, >1% Qtz
0.12
0.41
0.29
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.
Mobile Plant #3 recorded 0.00 reportable injury cases per 100 full-time workers in 2004.
Injury rate, 2004
ⓘ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 3.73 and the all-US-mining average was 4.33 cases per 100 workers.
In Alaska, metal and nonmetal mining averaged 5.19 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.
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
2026
2
2025
4
2024
3
2023
2
2022
4
2021
3
2020
2
2019
5
2018
4
2017
5
2016
5
2015
3
2014
2
2013
2
2012
2
2011
3
2010
2
2009
3
2008
6
2007
8
2006
7
2005
28
2004
25
2003
23
Source: MSHA quarterly employment and production, updated weekly.
Mobile Plant #3 sits in Fairbanks North Star Borough, Alaska, where the Census mining category is 2.6% 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.
Fairbanks North Star Borough, Alaska · Population 95,555
2.6%
Mining share of county employment
$84,722
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
773
0
0
0.0
2026 Q1
0
0
0
2025 Q4
571
0
0
0.0
2025 Q3
1,775
0
0
0.0
2025 Q2
929
0
0
0.0
2025 Q1
0
0
0
2024 Q4
0
0
0
2024 Q3
1,483
0
0
0.0
Show 85 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
775
0
0
0.0
2024 Q1
0
0
0
2023 Q4
0
0
0
2023 Q3
1,493
0
0
0.0
2023 Q2
33
0
0
0.0
2023 Q1
0
0
0
2022 Q4
533
1
0
1876.2
2022 Q3
2,018
0
0
0.0
2022 Q2
575
0
0
0.0
2022 Q1
0
0
0
2021 Q4
125
0
0
0.0
2021 Q3
1,562
0
0
0.0
2021 Q2
419
0
0
0.0
2021 Q1
0
0
0
2020 Q4
5
0
0
0.0
2020 Q3
2,336
0
0
0.0
2020 Q2
247
0
0
0.0
2020 Q1
0
0
0
2019 Q4
364
0
0
0.0
2019 Q3
1,549
0
0
0.0
2019 Q2
909
1
0
1100.1
2019 Q1
40
0
0
0.0
2018 Q4
156
0
0
0.0
2018 Q3
1,779
0
0
0.0
2018 Q2
1,109
6
3
5410.3
2018 Q1
0
0
0
2017 Q4
184
0
0
0.0
2017 Q3
1,701
0
0
0.0
2017 Q2
1,174
2
0
1703.6
2017 Q1
0
0
0
2016 Q4
399
0
0
0.0
2016 Q3
2,400
0
0
0.0
2016 Q2
1,848
0
0
0.0
2016 Q1
0
0
0
2015 Q4
110
0
0
0.0
2015 Q3
1,129
6
0
5314.4
2015 Q2
1,178
0
0
0.0
2015 Q1
0
0
0
2014 Q4
78
0
0
0.0
2014 Q3
1,042
1
0
959.7
2014 Q2
2,859
0
0
0.0
2014 Q1
0
0
0
2013 Q4
245
0
0
0.0
2013 Q3
582
0
0
0.0
2013 Q2
796
0
0
0.0
2013 Q1
0
0
0
2012 Q4
29
0
0
0.0
2012 Q3
1,385
1
1
722.0
2012 Q2
1,693
2
1
1181.3
2012 Q1
0
0
0
2011 Q4
0
0
0
2011 Q3
2,416
0
0
0.0
2011 Q2
712
1
1
1404.5
2011 Q1
0
0
0
2010 Q4
0
0
0
2010 Q3
1,955
12
7
6138.1
2010 Q2
288
0
0
0.0
2010 Q1
0
0
0
2009 Q4
30
0
0
0.0
2009 Q3
1,164
2
1
1718.2
2009 Q2
1,029
0
0
0.0
2009 Q1
8
0
0
0.0
2008 Q4
702
2
0
2849.0
2008 Q3
2,238
0
0
0.0
2008 Q2
1,441
2
1
1387.9
2008 Q1
149
0
0
0.0
2007 Q4
55
0
0
0.0
2007 Q3
3,120
1
0
320.5
2007 Q2
3,666
0
0
0.0
2007 Q1
45
0
0
0.0
2006 Q4
0
0
0
2006 Q3
1,860
0
0
0.0
2006 Q2
2,106
1
0
474.8
2006 Q1
0
0
0
2005 Q4
1,645
0
0
0.0
2005 Q3
7,537
0
0
0.0
2005 Q2
3,563
3
2
842.0
2005 Q1
506
0
0
0.0
2004 Q4
2,604
0
0
0.0
2004 Q3
9,442
3
0
317.7
2004 Q2
8,402
0
0
0.0
2004 Q1
0
0
0
2003 Q4
755
0
0
0.0
2003 Q3
3,827
0
0
0.0
2003 Q2
4,858
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2015 · 1 incident
April 28, 2015AK · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerFIRE
Employee was using torch to cut metal/cone when the oxygen hose blew from fitting causing a flash. Employee was wearing welding hood, leather gloves, safety glasses and 3 layers of clothing. The flash burnt through clothing, giving employee 1st degree burns. No lost time, employee returned to work and fully released for full duty following day on 4/29/2015.