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: 514 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Stone Ranch Pit has $7K in proposed MSHA penalties and $0 outstanding across 0 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.
$7K
proposed penalties
$7K
current assessed
$7K
paid to date
$0
outstanding
54 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-11-05.
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.
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: 2023-06-22, 3 years ago
7
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg6
Quartz, respirable, >1% Qtz1
Show the individual readings (7)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2023-06-22
Respirable dust, <.1mg
0
Rotary Bucket Ex. Operator
2023-06-22
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-06-22
Respirable dust, <.1mg
0
Laborer, Bullgang
2021-06-23
Quartz, respirable, >1% Qtz
0.13
Laborer, Bullgang
2017-07-12
Respirable dust, <.1mg
0
Laborer, Bullgang
2017-07-12
Respirable dust, <.1mg
0
Front-end Loader Operator
2011-05-05
Respirable dust, <.1mg
0
Mechanic
Area samples (mill and shop air)
Last sampled: 2016-09-29, 9 years ago
2
samples
Show the individual readings (2)
Date
Contaminant
Concentration
Limit
Conc / limit
Area sampled
2016-09-29
Respirable dust, <.1mg
0
SF ORE PROCESSING
2016-09-29
Respirable dust, <.1mg
0
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
3
2025
3
2024
3
2023
3
2022
3
2021
3
2020
4
2019
3
2018
3
2017
3
2016
3
2015
3
2014
3
2013
2
2012
2
2011
2
2010
2
2009
1
2008
2
2007
2
2006
2
2005
2
2004
1
2003
1
2002
0
Source: MSHA quarterly employment and production, updated weekly.
Stone Ranch Pit sits in Teller County, Colorado, where the Census mining category is 2.2% 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.
Teller County, Colorado · Population 24,774
2.2%
Mining share of county employment
$80,666
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
1,394
0
0
0.0
2026 Q1
1,010
0
0
0.0
2025 Q4
1,212
1
0
825.1
2025 Q3
1,462
1
0
684.0
2025 Q2
1,468
0
0
0.0
2024 Q4
1,117
0
0
0.0
2024 Q3
1,441
1
0
694.0
2024 Q2
1,442
0
0
0.0
Show 85 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q1
880
1
0
1136.4
2023 Q4
1,219
0
0
0.0
2023 Q3
1,438
0
0
0.0
2023 Q2
1,378
1
0
725.7
2023 Q1
1,121
1
0
892.1
2022 Q4
1,163
0
0
0.0
2022 Q3
1,479
0
0
0.0
2022 Q2
1,409
0
0
0.0
2022 Q1
975
3
0
3076.9
2021 Q4
1,127
0
0
0.0
2021 Q3
1,470
0
0
0.0
2021 Q2
1,463
4
2
2734.1
2021 Q1
628
0
0
0.0
2020 Q4
1,092
1
0
915.8
2020 Q3
1,070
2
0
1869.2
2020 Q2
1,162
0
0
0.0
2020 Q1
469
0
0
0.0
2019 Q4
981
0
0
0.0
2019 Q3
1,454
0
0
0.0
2019 Q2
1,187
0
0
0.0
2019 Q1
875
3
1
3428.6
2018 Q4
887
0
0
0.0
2018 Q3
1,423
4
0
2811.0
2018 Q2
1,430
0
0
0.0
2018 Q1
825
1
0
1212.1
2017 Q4
1,342
0
0
0.0
2017 Q3
1,395
3
1
2150.5
2017 Q2
1,355
0
0
0.0
2017 Q1
900
1
0
1111.1
2016 Q4
1,075
0
0
0.0
2016 Q3
1,405
0
0
0.0
2016 Q2
845
2
0
2366.9
2016 Q1
435
0
0
0.0
2015 Q4
1,225
0
0
0.0
2015 Q3
1,359
0
0
0.0
2015 Q2
1,282
0
0
0.0
2015 Q1
331
0
0
0.0
2014 Q4
959
0
0
0.0
2014 Q3
926
0
0
0.0
2014 Q2
865
1
0
1156.1
2014 Q1
140
0
0
0.0
2013 Q4
500
0
0
0.0
2013 Q3
685
1
0
1459.9
2013 Q2
660
2
0
3030.3
2013 Q1
235
0
0
0.0
2012 Q4
515
0
0
0.0
2012 Q3
685
0
0
0.0
2012 Q2
800
0
0
0.0
2012 Q1
440
0
0
0.0
2011 Q4
250
1
1
4000.0
2011 Q3
495
0
0
0.0
2011 Q2
490
0
0
0.0
2011 Q1
200
0
0
0.0
2010 Q4
246
2
0
8130.1
2010 Q3
555
2
1
3603.6
2010 Q2
640
0
0
0.0
2010 Q1
25
0
0
0.0
2009 Q4
118
0
0
0.0
2009 Q3
0
0
0
2009 Q2
330
6
4
18181.8
2009 Q1
15
0
0
0.0
2008 Q4
260
0
0
0.0
2008 Q3
576
0
0
0.0
2008 Q2
400
0
0
0.0
2008 Q1
200
0
0
0.0
2007 Q4
160
2
0
12500.0
2007 Q3
664
0
0
0.0
2007 Q2
480
0
0
0.0
2007 Q1
60
1
0
16666.7
2006 Q4
62
0
0
0.0
2006 Q3
123
3
0
24390.2
2006 Q2
237
0
0
0.0
2006 Q1
261
1
0
3831.4
2005 Q3
207
0
0
0.0
2005 Q1
40
0
0
0.0
2004 Q4
40
0
0
0.0
2004 Q3
60
0
0
0.0
2004 Q2
40
0
0
0.0
2004 Q1
30
0
0
0.0
2003 Q4
15
0
0
0.0
2003 Q3
60
2
0
33333.3
2003 Q2
0
0
0
2003 Q1
0
0
0
2002 Q4
0
0
0
2002 Q3
0
0
0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2017 · 1 incident
August 14, 2017CO · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanPOWERED HAULAGE
EE was shoveling under conveyor which isn't common practice as cleanup is usual done after plant is shut down & bobcat is used. It was muddy & as EE stepped back felt was slipping & reached up to catch self & got fingers in between guard & pulley. Lost ring finger on rt hand between fingernail & middle finger, middle finger at middle knuckle, pointer finger just above hand knuckle.