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7-Mile Mine: 96 MSHA citations Metal/Non-Metal

Dolese Bros. Co. · Surface
Controlled by Dolese Brothers Company
Ponca City, Kay County, OK  ·  Active
MSHA Mine ID: 3401867

7-Mile Mine has $20K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
3
Years on record
2003–2012
Latest incident
Dec 2012
Compliance record
MSHA citations since 2002
96
citations
24
significant & substantial
$20,159
proposed penalties
$20,159
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Dolese Bros. Co.'s full MSHA compliance history →
Inspection activity
MSHA inspections since 2001
64
inspections on record
623
inspection hours
n/a
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: 623 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

7-Mile Mine has $20K 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.
$20K
proposed penalties
$20K
current assessed
$20K
paid to date
$0
outstanding
96 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-04-21.
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.
25.0%
significant & substantial
7.3%
high negligence or reckless
25.0%
reasonably likely or greater
54.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 6.2% low, 86.5% moderate, 7.3% high, 0.0% reckless.
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: 2026-04-28
0%
of limit-tested samples over the exposure limit
26
samples
11
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg12
  • Nuisance dust, respirable, <1% Qtz8
  • Quartz, respirable, >1% Qtz4
  • Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (26)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-04-28 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2026-04-28 Quartz, respirable, >1% Qtz 0.15 Front-end Loader Operator
2026-04-28 Quartz, respirable, >1% Qtz 0.2 1.21 0.17 Supervisor, Co. Official
2023-06-21 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2023-06-21 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2023-06-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-10-02 Respirable dust, <.1mg 0 Front-end Loader Operator
2019-10-02 Nuisance dust, respirable, <1% Qtz 0.19 10 0.02 Front-end Loader Operator
2019-10-02 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2019-10-02 Nuisance dust, respirable, <1% Qtz 0.26 10 0.03 Rotary Bucket Ex. Operator
2018-10-24 Respirable dust, <.1mg 0 Front-end Loader Operator
2018-10-24 Unlisted Particulate, respirable, <1% Qtz 0.18 Front-end Loader Operator
2018-10-24 Unlisted Particulate, respirable, <1% Qtz 0.17 Rotary Bucket Ex. Operator
2015-10-06 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-10-06 Nuisance dust, respirable, <1% Qtz 0.17 10 0.02 Front-end Loader Operator
2012-03-01 Quartz, respirable, >1% Qtz 0.39 1.83 0.21 Front-end Loader Operator
2012-03-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-03-01 Nuisance dust, respirable, <1% Qtz 0.4 10 0.04 Rotary Bucket Ex. Operator
2012-03-01 Respirable dust, <.1mg 0 Scale Man
2010-01-06 Nuisance dust, respirable, <1% Qtz 0.29 10 0.03 Backhoe Operator
2010-01-06 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-01-06 Respirable dust, <.1mg 0 Front-end Loader Operator
2009-04-07 Quartz, respirable, >1% Qtz 0.23 1.28 0.18 Front-end Loader Operator
2009-04-07 Nuisance dust, respirable, <1% Qtz 0.12 10 0.01 Supervisor, Co. Official
2009-04-07 Nuisance dust, respirable, <1% Qtz 0.19 10 0.02 Backhoe Operator
2003-11-05 Nuisance dust, respirable, <1% Qtz 0.18 10 0.02 Utility 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.

7-Mile Mine recorded 0.00 reportable injury cases per 100 full-time workers in 2019.

Injury rate, 2019
ⓘ 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 1.94 and the all-US-mining average was 2.32 cases per 100 workers.
In Oklahoma, metal and nonmetal mining averaged 2.18 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.
Year total case rate days-away fatal
2019 * 0.00 0.00 0.000
2018 * 0.00 0.00 0.000
2017 * 0.00 0.00 0.000
2016 * 0.00 0.00 0.000
2014 * 0.00 0.00 0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
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.
Ownership history
  1. 7 Mile Mine, LLC 2001 to 2014
  2. Dolese Bros. Co. 2014 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 6
2025 7
2024 6
2023 6
2022 6
2021 6
2020 7
2019 7
2018 6
2017 7
2016 6
2015 5
2014 10
2013 8
2012 6
2011 6
2010 5
2009 5
2008 4
2007 5
2006 3
2005 3
2004 3
2003 3
2002 4
2001 2
Source: MSHA quarterly employment and production, updated weekly.

7-Mile Mine sits in Kay County, Oklahoma, 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.
Kay County, Oklahoma · Population 43,731
2.6%
Mining share of county employment
$56,673
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 4,248 0 0 0.0
2026 Q1 3,797 0 0 0.0
2025 Q4 4,137 0 0 0.0
2025 Q3 4,935 0 0 0.0
2025 Q2 4,002 0 0 0.0
2025 Q1 3,151 0 0 0.0
2024 Q4 3,119 1 0 320.6
2024 Q3 3,706 1 0 269.8
Show 93 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 3,065 0 0 0.0
2024 Q1 2,972 0 0 0.0
2023 Q4 3,028 0 0 0.0
2023 Q3 3,701 0 0 0.0
2023 Q2 3,534 0 0 0.0
2023 Q1 3,553 0 0 0.0
2022 Q4 3,393 0 0 0.0
2022 Q3 3,879 0 0 0.0
2022 Q2 3,690 0 0 0.0
2022 Q1 2,772 0 0 0.0
2021 Q4 2,844 1 0 351.6
2021 Q3 3,258 0 0 0.0
2021 Q2 3,351 0 0 0.0
2021 Q1 3,170 0 0 0.0
2020 Q4 2,827 1 0 353.7
2020 Q3 2,448 0 0 0.0
2020 Q2 6,279 0 0 0.0
2020 Q1 7,062 0 0 0.0
2019 Q4 6,094 0 0 0.0
2019 Q3 7,000 0 0 0.0
2019 Q2 6,024 0 0 0.0
2019 Q1 6,026 0 0 0.0
2018 Q4 5,917 0 0 0.0
2018 Q3 6,704 2 0 298.3
2018 Q2 7,316 0 0 0.0
2018 Q1 5,719 1 0 174.9
2017 Q4 5,965 0 0 0.0
2017 Q3 7,930 0 0 0.0
2017 Q2 6,560 1 0 152.4
2017 Q1 5,717 0 0 0.0
2016 Q4 5,486 0 0 0.0
2016 Q3 5,380 2 0 371.7
2016 Q2 6,151 0 0 0.0
2016 Q1 5,607 0 0 0.0
2015 Q4 5,056 2 2 395.6
2015 Q3 2,936 0 0 0.0
2015 Q2 4,331 4 1 923.6
2015 Q1 6,777 2 2 295.1
2014 Q4 4,227 0 0 0.0
2014 Q3 5,206 2 1 384.2
2014 Q2 5,717 0 0 0.0
2014 Q1 5,300 4 1 754.7
2013 Q4 4,833 0 0 0.0
2013 Q3 4,328 0 0 0.0
2013 Q2 3,345 2 1 597.9
2013 Q1 2,816 0 0 0.0
2012 Q4 4,771 1 0 209.6
2012 Q3 4,124 3 2 727.4
2012 Q2 3,810 0 0 0.0
2012 Q1 2,804 2 0 713.3
2011 Q4 2,264 0 0 0.0
2011 Q3 2,699 1 0 370.5
2011 Q2 2,402 5 2 2081.6
2011 Q1 2,587 0 0 0.0
2010 Q4 3,323 4 2 1203.7
2010 Q3 3,255 0 0 0.0
2010 Q2 2,355 3 0 1273.9
2010 Q1 1,889 3 1 1588.1
2009 Q4 3,190 0 0 0.0
2009 Q3 3,013 0 0 0.0
2009 Q2 2,179 1 0 458.9
2009 Q1 1,955 0 0 0.0
2008 Q4 1,766 1 0 566.3
2008 Q3 1,929 0 0 0.0
2008 Q2 1,778 2 0 1124.9
2008 Q1 1,464 4 1 2732.2
2007 Q4 1,811 0 0 0.0
2007 Q3 2,281 0 0 0.0
2007 Q2 2,518 3 0 1191.4
2007 Q1 1,426 0 0 0.0
2006 Q4 1,270 0 0 0.0
2006 Q3 1,405 0 0 0.0
2006 Q2 1,318 0 0 0.0
2006 Q1 1,265 6 1 4743.1
2005 Q4 1,264 1 0 791.1
2005 Q3 468 4 0 8547.0
2005 Q2 781 0 0 0.0
2005 Q1 808 1 0 1237.6
2004 Q4 893 5 1 5599.1
2004 Q3 947 0 0 0.0
2004 Q2 930 0 0 0.0
2004 Q1 536 0 0 0.0
2003 Q4 984 5 0 5081.3
2003 Q3 1,276 0 0 0.0
2003 Q2 1,647 2 0 1214.3
2003 Q1 1,581 2 0 1265.0
2002 Q4 1,315 0 0 0.0
2002 Q3 1,604 10 6 6234.4
2002 Q2 1,229 0 0 0.0
2002 Q1 1,040 0 0 0.0
2001 Q4 884 0 0 0.0
2001 Q3 1,208 0 0 0.0
2001 Q2 840 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

3 on file

2012 · 2 incidents

December 12, 2012 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
7 Mile Mine, LLC · Struck by falling object

A new hire was helping load scraped iron, was told to stay back from swing area, he got in swing area and some iron fell from bucket and landed on top part of left foot, foot has 4 broken bones, he was not wearing steel toes boots as safety training required

July 27, 2012 OK · Metal/Non-Metal miner, prospector, nec SLIP OR FALL OF PERSON
7 Mile Mine, LLC · Fall from machine

This is to correct date of accident, regular customer got out of truck, started to climb on loader, slipped on step, fell and hit head,had site specific signed before entering pit area.

2003 · 1 incident

April 4, 2003 OK · Metal/Non-Metal
7 Mile Mine, LLC · -

AFTER SHOOTING A SHOT, EE & CO-WORKER WERE TAKING DOWN SCREENS OFF FUEL TANK. A SCREEN GRABBED EE'S LEATHER GLOVE AND PULLED HIM OFF FUEL TANK.THIS CAUSED HIM TO FALL TO THE GROUND INJURING HIS RIGHT SHOULDER.