SHEEP HILL CINDER MINE has $5K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
4
Years on record
2007–2019
Latest incident
Oct 2019
Compliance record
MSHA citations since 2000
42
citations
6
significant & substantial
$5,223
proposed penalties
$4,668
paid to date
89% of proposed penalties paid to date, a $555 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: 507 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
SHEEP HILL CINDER MINE has $5K 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.
$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$0
outstanding
42 assessments are final orders; 1 contested dockets.
Of $655 in penalties contested before the Commission, $100 was upheld in final decisions.
As of the most recent assessment on 2025-06-11.
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.
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: 2026-02-11
0%
of limit-tested samples over the exposure limit
14
samples
3
limit-tested
Most sampled contaminants
Respirable dust, <.1mg10
Quartz, respirable, >1% Qtz2
Nuisance dust, respirable, <1% Qtz1
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (14)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-02-11
Respirable dust, <.1mg
0
Front-end Loader Operator
2026-02-11
Respirable dust, <.1mg
0
Mechanic
2024-04-24
Respirable dust, <.1mg
0
Front-end Loader Operator
2024-04-24
Nuisance dust, respirable, <1% Qtz
0.13
10
0.01
Front-end Loader Operator
2019-10-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-10-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-10-08
Respirable dust, <.1mg
0
Crusher Oper/Worker
2010-06-30
Quartz, respirable, >1% Qtz
0.19
1.44
0.13
Front-end Loader Operator
2003-03-12
Respirable dust, <.1mg
0
Front-end Loader Operator
2003-03-12
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2003-03-12
Respirable dust, <.1mg
0
Front-end Loader Operator
2001-06-28
Respirable dust, <.1mg
0
Front-end Loader Operator
2001-06-28
Quartz, respirable, >1% Qtz
0.95
3.3
0.29
Front-end Loader Operator
2001-06-28
Unlisted Particulate, respirable, <1% Qtz
0.13
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
2026
8
2025
8
2024
9
2023
9
2022
10
2021
9
2020
9
2019
11
2018
8
2017
8
2015
2
2014
3
2013
3
2012
2
2011
4
2010
4
2009
4
2008
6
2007
7
2006
5
2005
4
2004
4
2003
4
2002
4
2001
4
2000
3
Source: MSHA quarterly employment and production, updated weekly.
SHEEP HILL CINDER MINE sits in Coconino 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.
Coconino County, Arizona · Population 144,643
0.2%
Mining share of county employment
$69,748
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
The employee was not wearing a safety belt and lanyard while removing a screen from a portable screen plant. When the screen became wedged the employee crossed over the safety barrier to pull the screen. As it dislodged the employee lost balance and fell approximately 10" to the ground. The employee sustained a fractured ankle.
2007 · 3 incidents
November 8, 2007AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSTEPPING OR KNEELING ON OBJECT
EE was on ladder welding legs to stacker and 2 employees below holding legs. Legs shifting causing 1 employee to fall off the ladder and the other employee to hurt himself while holding the ladder.
September 8, 2007AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
EE was on ladder welding legs to stacker and 2 employees below holding legs. Legs shifting causing 1 employee to fall off the ladder and the other employee to hurt himself while holding the ladder.