Portable Crusher #2 has $8K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
4
Years on record
2002–2010
Latest incident
Oct 2010
Compliance record
MSHA citations since 2000
58
citations
16
significant & substantial
$7,778
proposed penalties
$7,711
paid to date
99% of proposed penalties paid to date, a $67 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: 538 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘA Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2010-08-03.
On record since 2010.
Source: MSHA imminent-danger order records, updated weekly.
Portable Crusher #2 has $8K in proposed MSHA penalties and $0 outstanding across 2 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.
$8K
proposed penalties
$8K
current assessed
$8K
paid to date
$0
outstanding
57 assessments are final orders; 2 contested dockets.
Of $335 in penalties contested before the Commission, $55 was upheld in final decisions.
As of the most recent assessment on 2026-04-16.
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 · 2% of citations on record
Vacated or withdrawn
1 · 100%
100%
Penalty reduction in decided contests
$100 proposed, $0 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 2007-11-02.
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: 2026-04-16
18%
of limit-tested samples over the exposure limit
19
samples
11
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz142 over
Respirable dust, <.1mg5
Show the individual readings (19)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2010-08-04
Quartz, respirable, >1% Qtz
0.65
0.6
1.08
Laborer, Bullgang
2008-08-06
Quartz, respirable, >1% Qtz
0.84
0.51
1.65
Laborer, Bullgang
2026-04-16
Respirable dust, <.1mg
0
Front-end Loader Operator
2026-04-16
Quartz, respirable, >1% Qtz
0.13
Laborer, Bullgang
2026-04-16
Quartz, respirable, >1% Qtz
0.18
Laborer, Bullgang
2022-09-14
Respirable dust, <.1mg
0
Truck Driver
2022-09-14
Quartz, respirable, >1% Qtz
0.53
0.59
0.90
Laborer, Bullgang
2020-09-23
Quartz, respirable, >1% Qtz
0.22
Laborer, Bullgang
2018-02-14
Respirable dust, <.1mg
0
Laborer, Bullgang
2014-09-04
Quartz, respirable, >1% Qtz
0.17
0.86
0.20
Laborer, Bullgang
2014-09-04
Respirable dust, <.1mg
0
Crusher Oper/Worker
2014-09-04
Quartz, respirable, >1% Qtz
0.25
0.75
0.33
Laborer, Bullgang
2014-09-04
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-08-04
Quartz, respirable, >1% Qtz
0.42
0.44
0.95
Laborer, Bullgang
2009-09-09
Quartz, respirable, >1% Qtz
0.23
0.79
0.29
Cleanup Man
2009-09-09
Quartz, respirable, >1% Qtz
0.46
0.65
0.71
Cleanup Man
2008-09-18
Quartz, respirable, >1% Qtz
0.17
0.66
0.26
Laborer, Bullgang
2008-09-18
Quartz, respirable, >1% Qtz
0.12
0.83
0.14
Laborer, Bullgang
2008-08-06
Quartz, respirable, >1% Qtz
0.36
0.92
0.39
Laborer, Bullgang
Area samples (mill and shop air)
Last sampled: 2016-08-17, 10 years ago
1
samples
Show the individual readings (1)
Date
Contaminant
Concentration
Limit
Conc / limit
Area sampled
2016-08-17
Quartz, respirable, >1% Qtz
0.38
SF ORE PROCESSING
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
16
2025
21
2024
14
2023
11
2022
16
2021
11
2020
7
2019
5
2018
4
2017
4
2016
4
2015
3
2014
3
2013
4
2012
42
2011
6
2010
2
2009
6
2008
6
2007
5
2006
10
2005
7
2004
7
2003
6
2002
10
2001
6
2000
4
Source: MSHA quarterly employment and production, updated weekly.
Portable Crusher #2 sits in Weld County, Colorado, where the Census mining category is 2.4% 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.
Weld County, Colorado · Population 340,711
2.4%
Mining share of county employment
$93,287
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
Miner was standing on the frame rail of a feed hopper approx. 3' off the ground. His feet slipped on the rail and he reached out to grab a cross member to prevent a fall. This resulted in a jarring motion and strain in his left shoulder.
Two employees were dismantling a conveyor belt stand to move portable crusher. The attachment points on the metal foot of the stand were rusted into place. When the foot came loose from the stand it fell on one employee's foot resulting in a fractured bone.
Employee struck the little finger of his left hand with a 2 lb. sledge hammer while trying to adjust position of the cone in the cone crusher. The blow resulted in a laceration that required 3 sutures. He was wearing leather gloves.
2002 · 1 incident
March 4, 2002CO · Metal/Non-Metalmine manager, mine foreman, mine ownerHANDLING OF MATERIALS