Northern Portable Plant #12 has $12K in proposed MSHA penalties and $0 outstanding across 3 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at Northern Portable Plant #12.
Fatalities
0
Total incidents
8
Years on record
1995–2022
Latest incident
May 2022
Compliance record
MSHA citations since 2000
60
citations
15
significant & substantial
$12,144
proposed penalties
$12,144
paid to date
100% of proposed penalties paid to date, a $0 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: 647 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Northern Portable Plant #12 has $12K 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.
$12K
proposed penalties
$12K
current assessed
$12K
paid to date
$0
outstanding
60 assessments are final orders; 3 contested dockets.
Of $1K in penalties contested before the Commission, $1K was upheld in final decisions.
As of the most recent assessment on 2024-06-10.
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.
5citations taken to the federal commission · 8% of citations on record
Stood as issued
5 · 100%
0%
Penalty reduction in decided contests
$1K proposed, $1K 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2023-04-18.
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: 2025-10-30
9%
of limit-tested samples over the exposure limit
30
samples
11
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz131 over
Respirable dust, <.1mg13
Unlisted Particulate, total, <1% Qtz2
Nuisance dust, respirable, <1% Qtz1
Show the individual readings (30)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2006-08-10
Quartz, respirable, >1% Qtz
0.84
0.81
1.04
Crusher Oper/Worker
2025-10-30
Quartz, respirable, >1% Qtz
0.18
0.63
0.29
Crusher Oper/Worker
2025-10-30
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-05-02
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-05-02
Respirable dust, <.1mg
0
Laborer, Bullgang
2023-05-02
Quartz, respirable, >1% Qtz
0.33
0.47
0.70
Crusher Oper/Worker
2023-05-02
Respirable dust, <.1mg
0
Front-end Loader Operator
2021-01-21
Quartz, respirable, >1% Qtz
0.17
Laborer, Bullgang
2021-01-21
Quartz, respirable, >1% Qtz
0.39
Front-end Loader Operator
2021-01-21
Respirable dust, <.1mg
0
Crusher Oper/Worker
2018-03-20
Nuisance dust, respirable, <1% Qtz
0.3
10
0.03
Front-end Loader Operator
2018-03-20
Respirable dust, <.1mg
0
Laborer, Bullgang
2018-03-20
Quartz, respirable, >1% Qtz
0.13
Front-end Loader Operator
2018-03-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2015-12-02
Respirable dust, <.1mg
0
Laborer, Bullgang
2014-04-08
Unlisted Particulate, total, <1% Qtz
0.23
Laborer, Bullgang
2014-04-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2014-04-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2014-04-08
Unlisted Particulate, total, <1% Qtz
0.13
Crusher Oper/Worker
2013-05-22
Unlisted Particulate, respirable, <1% Qtz
0.28
Front-end Loader Operator
2013-05-22
Respirable dust, <.1mg
0
Crusher Oper/Worker
2013-05-22
Quartz, respirable, >1% Qtz
0.36
0.62
0.58
Laborer, Bullgang
2013-05-22
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-09-02
Quartz, respirable, >1% Qtz
0.23
0.96
0.24
Front-end Loader Operator
2010-09-02
Quartz, respirable, >1% Qtz
0.26
0.56
0.46
Supervisor, Co. Official
2010-09-02
Quartz, respirable, >1% Qtz
0.23
0.83
0.28
Oiler, Greaser
2010-09-02
Respirable dust, <.1mg
0
Front-end Loader Operator
2006-08-10
Quartz, respirable, >1% Qtz
0.29
0.58
0.50
Front-end Loader Operator
2000-11-14
Quartz, respirable, >1% Qtz
0.25
0.48
0.52
Cleanup Man
2000-11-14
Quartz, respirable, >1% Qtz
0.28
0.35
0.80
Cleanup Man
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
2026
1
2025
3
2024
5
2023
4
2022
5
2021
6
2020
6
2019
7
2018
7
2017
7
2016
7
2015
7
2014
6
2013
7
2012
6
2011
5
2010
6
2009
0
2008
2
2007
4
2006
4
2005
5
2004
4
2003
4
2002
3
2001
5
2000
5
Source: MSHA quarterly employment and production, updated weekly.
Northern Portable Plant #12 sits in Larimer County, Colorado, 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.
Larimer County, Colorado · Population 363,561
0.6%
Mining share of county employment
$91,364
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
0
0
0
2026 Q1
949
0
0
0.0
2025 Q4
1,602
0
0
0.0
2025 Q3
1,366
0
0
0.0
2025 Q2
1,895
0
0
0.0
2025 Q1
919
0
0
0.0
2024 Q4
1,629
0
0
0.0
2024 Q3
2,653
0
0
0.0
Show 94 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
3,141
1
0
318.4
2024 Q1
3,578
0
0
0.0
2023 Q4
2,703
0
0
0.0
2023 Q3
2,568
0
0
0.0
2023 Q2
2,154
1
0
464.3
2023 Q1
1,916
1
0
521.9
2022 Q4
2,295
0
0
0.0
2022 Q3
3,024
0
0
0.0
2022 Q2
3,354
1
0
298.2
2022 Q1
2,616
0
0
0.0
2021 Q4
3,112
0
0
0.0
2021 Q3
3,799
0
0
0.0
2021 Q2
3,813
2
0
524.5
2021 Q1
3,447
1
0
290.1
2020 Q4
3,597
0
0
0.0
2020 Q3
4,231
0
0
0.0
2020 Q2
4,172
1
0
239.7
2020 Q1
3,675
0
0
0.0
2019 Q4
3,635
0
0
0.0
2019 Q3
4,217
0
0
0.0
2019 Q2
3,824
0
0
0.0
2019 Q1
3,527
0
0
0.0
2018 Q4
3,940
0
0
0.0
2018 Q3
4,892
0
0
0.0
2018 Q2
3,990
0
0
0.0
2018 Q1
3,742
4
0
1068.9
2017 Q4
3,715
0
0
0.0
2017 Q3
4,621
0
0
0.0
2017 Q2
4,381
0
0
0.0
2017 Q1
4,234
1
0
236.2
2016 Q4
3,864
0
0
0.0
2016 Q3
4,782
0
0
0.0
2016 Q2
4,899
0
0
0.0
2016 Q1
4,336
0
0
0.0
2015 Q4
4,212
1
0
237.4
2015 Q3
4,895
0
0
0.0
2015 Q2
3,863
1
1
258.9
2015 Q1
3,717
3
1
807.1
2014 Q4
3,725
0
0
0.0
2014 Q3
4,783
0
0
0.0
2014 Q2
5,161
3
0
581.3
2014 Q1
4,798
0
0
0.0
2013 Q4
4,268
1
1
234.3
2013 Q3
4,879
0
0
0.0
2013 Q2
3,458
1
0
289.2
2013 Q1
2,947
1
0
339.3
2012 Q4
3,289
0
0
0.0
2012 Q3
4,208
0
0
0.0
2012 Q2
3,827
1
0
261.3
2012 Q1
2,986
0
0
0.0
2011 Q4
2,556
3
1
1173.7
2011 Q3
4,690
0
0
0.0
2011 Q2
4,015
0
0
0.0
2011 Q1
754
0
0
0.0
2010 Q4
2,724
0
0
0.0
2010 Q3
2,307
3
1
1300.4
2009 Q2
0
0
0
2009 Q1
0
0
0
2008 Q4
0
0
0
2008 Q3
275
0
0
0.0
2008 Q2
1,153
0
0
0.0
2008 Q1
386
0
0
0.0
2007 Q4
1,000
0
0
0.0
2007 Q3
967
0
0
0.0
2007 Q2
1,098
0
0
0.0
2007 Q1
1,732
3
0
1732.1
2006 Q4
2,881
0
0
0.0
2006 Q3
2,816
1
1
355.1
2006 Q2
2,552
0
0
0.0
2006 Q1
0
0
0
2005 Q4
1,055
0
0
0.0
2005 Q3
2,353
3
1
1275.0
2005 Q2
2,918
0
0
0.0
2005 Q1
1,825
0
0
0.0
2004 Q4
2,386
0
0
0.0
2004 Q3
2,340
9
2
3846.2
2004 Q2
2,175
3
2
1379.3
2004 Q1
1,702
0
0
0.0
2003 Q4
2,628
0
0
0.0
2003 Q3
3,957
0
0
0.0
2003 Q2
1,679
0
0
0.0
2003 Q1
0
0
0
2002 Q4
2,486
0
0
0.0
2002 Q3
2,761
1
0
362.2
2002 Q2
161
0
0
0.0
2002 Q1
0
0
0
2001 Q4
2,819
0
0
0.0
2001 Q3
3,928
0
0
0.0
2001 Q2
3,848
0
0
0.0
2001 Q1
2,501
0
0
0.0
2000 Q4
2,795
2
2
715.6
2000 Q3
2,347
2
0
852.2
2000 Q2
3,204
0
0
0.0
2000 Q1
1,296
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
8 on file
2022 · 1 incident
May 12, 2022CO · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
The injured employee (IE) was removing a five gallon bucket of oil from the bed of a pick up truck with the tailgate down and strained left shoulder. The injury has resulted in light duty restrictions and further treatment.
2014 · 1 incident
March 28, 2014CO · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDTOOLS (NONPOWERED)
Employee was changing jaw dies & had his hand between a crescent wrench & a piece of angle iron. Employee asked another employee to kick the end of the wrench to break the nut free. When the employee kicked it the nut spun quick & the employee's left ring finger was smashed between the angle iron & the crescent wrench. The tip of the employee's left ring finger was amputated.
2012 · 1 incident
December 13, 2012CO · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
The employee was working inside of a conveyor frame on a "dead" conveyor. On his descent, he came into contact with the metal frame causing a laceration on his left ear resulting in 15 stitches
1999 · 1 incident
March 25, 1999CO · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDTOOLS (NONPOWERED)
EMPLOYEE WAS CLEANING OUT A CULVERT FILLED FULL OF ROCK WITH A TAMPING BAR. WHILE PUSHING OBSTRUCTION, THE BAR SLIPPED AND HIS THUMB WAS CAUGHT BETWEEN CULVERT AND THE END OF THE POLE.
1998 · 1 incident
December 14, 1998CO · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanPOWERED HAULAGE