Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
Countries
Peru Chile
English Español
← Back to search

Corner Stone - #1 Wister Quarry: 55 MSHA citations Metal/Non-Metal

Corner Stone Quarries, Inc. · Surface
Controlled by Michael Qualls
Wister, Le Flore County, OK  ·  Intermittent
MSHA Mine ID: 3401899

Corner Stone - #1 Wister Quarry has $9K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at Corner Stone - #1 Wister Quarry.

Fatalities
0
Total incidents
3
Years on record
2004–2012
Latest incident
Aug 2012
Compliance record
MSHA citations since 2004
55
citations
21
significant & substantial
$8,965
proposed penalties
$8,965
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2003
56
inspections on record
525
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: 525 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Corner Stone - #1 Wister Quarry has $9K 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.
$9K
proposed penalties
$9K
current assessed
$9K
paid to date
$0
outstanding
55 assessments are final orders; 2 contested dockets.
Of $1K in penalties contested before the Commission, $1K was upheld in final decisions.
As of the most recent assessment on 2024-12-02.
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.
38.2%
significant & substantial
3.6%
high negligence or reckless
38.2%
reasonably likely or greater
47.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 5.5% low, 90.9% moderate, 3.6% high, 0.0% reckless.
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.
2 citations taken to the federal commission · 4% of citations on record
  • Settled 2 · 100%
100%
S&S designation survived the contest
ⓘ Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 2 decided S&S contests · industry: 79%
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 2014-12-03.
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.
Docket Decision Judge Year Proposed / upheld
CENT 2015-0118 Settlement Lesnick 2015 $873 → $873
CENT 2006-139M Settlement Manning 2006 $354 → $354
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2024-12-10
33%
of limit-tested samples over the exposure limit
29
samples
9
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz113 over
  • Respirable dust, <.1mg18
Show the individual readings (29)
Date Contaminant Concentration Limit Conc / limit Occupation
2013-11-20 Quartz, respirable, >1% Qtz 0.31 0.26 1.19 Stone Polisher/Cutter
2004-07-21 Quartz, respirable, >1% Qtz 0.46 0.34 1.35 Stone Polisher/Cutter
2004-07-21 Quartz, respirable, >1% Qtz 0.43 0.42 1.02 Bobcat Operator
2024-12-10 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2022-05-26 Respirable dust, <.1mg 0 Forklift Operator
2022-05-26 Quartz, respirable, >1% Qtz 0.13 0.39 0.33 Laborer, Bullgang
2022-05-26 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2022-05-26 Respirable dust, <.1mg 0 Bobcat Operator
2019-03-14 Respirable dust, <.1mg 0 Laborer, Bullgang
2019-03-14 Respirable dust, <.1mg 0 Bobcat Operator
2019-03-14 Respirable dust, <.1mg 0 Laborer, Bullgang
2014-03-13 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2013-11-20 Quartz, respirable, >1% Qtz 0.15 0.62 0.24 Stone Polisher/Cutter
2013-11-20 Quartz, respirable, >1% Qtz 0.25 0.35 0.71 Stone Polisher/Cutter
2013-11-20 Respirable dust, <.1mg 0 Front-end Loader Operator
2011-06-15 Respirable dust, <.1mg 0 Bobcat Operator
2011-06-15 Quartz, respirable, >1% Qtz 0.21 0.22 0.95 Stone Polisher/Cutter
2011-06-15 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2011-06-15 Respirable dust, <.1mg 0 Bobcat Operator
2011-06-15 Respirable dust, <.1mg 0 Bobcat Operator
2007-10-10 Respirable dust, <.1mg 0 Bobcat Operator
2007-10-10 Respirable dust, <.1mg 0 Front-end Loader Operator
2007-10-10 Respirable dust, <.1mg 0 Bobcat Operator
2004-10-29 Quartz, respirable, >1% Qtz 0.23 Front-end Loader Operator
2004-10-29 Respirable dust, <.1mg 0.12 Stone Polisher/Cutter
2004-10-29 Respirable dust, <.1mg 0.1 Stone Polisher/Cutter
2004-09-15 Quartz, respirable, >1% Qtz 0.53 Stone Polisher/Cutter
2004-07-21 Quartz, respirable, >1% Qtz 0.2 0.6 0.33 Front-end Loader Operator
2004-07-21 Quartz, respirable, >1% Qtz 0.39 0.53 0.74 Bobcat Operator
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.

Corner Stone - #1 Wister Quarry recorded 0.00 reportable injury cases per 100 full-time workers in 2007.

Injury rate, 2007
ⓘ 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
Below average. The US metal and nonmetal mining average was 3.30 and the all-US-mining average was 3.77 cases per 100 workers.
In Oklahoma, metal and nonmetal mining averaged 3.56 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
2007 * 0.00 0.00 0.000
2006 * 0.00 0.00 0.000
2005 * 9.28 9.28 0.000
2004 * 6.98 6.98 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. Corner Stone Quarries, Inc. 2002 to 2019
  2. Corner Stone Quarries, Inc. 2019 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 1
2024 1
2023 1
2022 4
2021 4
2020 5
2019 4
2018 4
2017 6
2016 8
2015 9
2014 8
2013 7
2012 9
2011 6
2010 4
2009 6
2008 10
2007 12
2006 12
2005 11
2004 15
2003 10
2002 3
Source: MSHA quarterly employment and production, updated weekly.

Corner Stone - #1 Wister Quarry sits in Le Flore County, Oklahoma, where the Census mining category is 3.0% 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.
Le Flore County, Oklahoma · Population 48,728
3.0%
Mining share of county employment
$50,027
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 1,440 0 0 0.0
2026 Q1 101 0 0 0.0
2025 Q4 42 0 0 0.0
2025 Q3 34 0 0 0.0
2025 Q2 30 0 0 0.0
2025 Q1 33 0 0 0.0
2024 Q4 28 1 0 35714.3
2024 Q3 32 0 0 0.0
Show 87 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 32 0 0 0.0
2024 Q1 30 0 0 0.0
2023 Q4 28 0 0 0.0
2023 Q3 32 0 0 0.0
2023 Q2 40 0 0 0.0
2023 Q1 890 0 0 0.0
2022 Q4 1,395 1 0 716.8
2022 Q3 1,395 0 0 0.0
2022 Q2 1,484 2 0 1347.7
2022 Q1 1,480 0 0 0.0
2021 Q4 1,490 0 0 0.0
2021 Q3 1,390 0 0 0.0
2021 Q2 1,850 0 0 0.0
2021 Q1 2,200 0 0 0.0
2020 Q4 2,230 0 0 0.0
2020 Q3 1,470 0 0 0.0
2020 Q2 1,353 0 0 0.0
2020 Q1 1,330 0 0 0.0
2019 Q4 1,520 2 0 1315.8
2019 Q3 1,395 0 0 0.0
2019 Q2 1,262 1 0 792.4
2019 Q1 22 0 0 0.0
2018 Q4 1,310 0 0 0.0
2018 Q3 1,312 0 0 0.0
2018 Q2 2,412 0 0 0.0
2018 Q1 2,412 1 0 414.6
2017 Q4 572 0 0 0.0
2017 Q3 2,172 0 0 0.0
2017 Q2 2,892 4 1 1383.1
2017 Q1 3,162 3 1 948.8
2016 Q4 3,087 0 0 0.0
2016 Q3 3,983 0 0 0.0
2016 Q2 2,988 1 1 334.7
2016 Q1 3,916 1 1 255.4
2015 Q4 3,340 0 0 0.0
2015 Q3 3,852 0 0 0.0
2015 Q2 3,275 2 0 610.7
2015 Q1 3,277 0 0 0.0
2014 Q4 3,657 0 0 0.0
2014 Q3 3,977 3 1 754.3
2014 Q2 2,880 4 1 1388.9
2014 Q1 2,409 0 0 0.0
2013 Q4 2,697 5 3 1853.9
2013 Q3 2,889 2 2 692.3
2013 Q2 2,742 0 0 0.0
2013 Q1 2,793 0 0 0.0
2012 Q4 3,257 2 1 614.1
2012 Q3 3,913 1 0 255.6
2012 Q2 3,721 1 0 268.7
2012 Q1 3,852 1 1 259.6
2011 Q4 2,841 0 0 0.0
2011 Q3 2,828 0 0 0.0
2011 Q2 1,932 0 0 0.0
2011 Q1 1,257 4 2 3182.2
2010 Q4 1,377 0 0 0.0
2010 Q3 1,356 1 0 737.5
2010 Q2 1,452 0 0 0.0
2010 Q1 756 0 0 0.0
2009 Q4 972 0 0 0.0
2009 Q3 2,850 0 0 0.0
2009 Q2 3,042 0 0 0.0
2009 Q1 1,410 0 0 0.0
2008 Q4 3,602 1 1 277.6
2008 Q3 4,984 0 0 0.0
2008 Q2 4,898 0 0 0.0
2008 Q1 3,328 0 0 0.0
2007 Q4 4,904 1 1 203.9
2007 Q3 5,570 0 0 0.0
2007 Q2 5,303 0 0 0.0
2007 Q1 5,306 0 0 0.0
2006 Q4 5,398 2 0 370.5
2006 Q3 5,750 0 0 0.0
2006 Q2 5,576 0 0 0.0
2006 Q1 5,456 0 0 0.0
2005 Q4 5,456 2 2 366.6
2005 Q3 5,456 0 0 0.0
2005 Q2 5,368 0 0 0.0
2005 Q1 5,280 0 0 0.0
2004 Q4 7,752 1 1 129.0
2004 Q3 8,296 3 1 361.6
2004 Q2 7,320 0 0 0.0
2004 Q1 5,280 2 0 378.8
2003 Q4 5,104 0 0 0.0
2003 Q3 5,456 0 0 0.0
2003 Q2 5,280 0 0 0.0
2003 Q1 3,840 0 0 0.0
2002 Q4 1,440 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

3 on file

2012 · 1 incident

August 22, 2012 OK · Metal/Non-Metal ledgeman/hand, quarry man OTHER
Corner Stone Quarries, Inc. · Bodily reaction, (Not Elsewhere Classified)

Employee claims that he went to use the bathroom (provided on site) but it was occupied. Instead of using a second bathroom (also provided on site) employee went behind a spoil pile and defecated. While defecating employee claims that his left knee was strained. There were no prior visual indications, nor prior communications, with his supervisor of any physical impairment.

2005 · 1 incident

June 6, 2005 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Corner Stone Quarries, Inc. · Contact with hot objects or substances

EMPLOYEE WAS REMOVING THE SIDE PANEL ON A SKIDSTEER TO INSPECT SENSOR WIRE WHEN HE BUMPED HIS SHOULDER ON THE EXHAUST. FIRST AID WAS BURN SPRAY AND BANDAGE. HE WORKED NEXT DAYS WITHOUT COMPLAINT. ON JUNE 10 HE WENT TO EMERGENCY ROOM WITH AN INFECTION. DR EXCUSED HIM FROM WORK THROUGH THE 17TH

2004 · 1 incident

April 15, 2004 OK · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Corner Stone Quarries, Inc. · Struck by flying object

During stone splitting operatin minor cut left thumb on sharp piece of stone. guaze pad and tape to control bleeding were used. minor was transported to potean hospital and received stitches.