Mining Incidents

Macarthur Sand Plant: 123 MSHA citations Metal/Non-Metal

Controlled by Kenneth K Wert
Oklahoma City, Oklahoma County, OK  ·  Active
MSHA Mine ID: 3400679

Macarthur Sand Plant has $23K 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
22
Years on record
1986–2026
Latest incident
Feb 2026
Compliance record
MSHA citations since 2000
123
citations
16
significant & substantial
$23,199
proposed penalties
$23,199
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
70
inspections on record
861
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: 861 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Macarthur Sand Plant has $23K 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.
$23K
proposed penalties
$23K
current assessed
$23K
paid to date
$0
outstanding
118 assessments are final orders; 1 contested dockets.
Of $300 in penalties contested before the Commission, $300 was upheld in final decisions.
As of the most recent assessment on 2026-06-16.
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.
13.0%
significant & substantial
4.9%
high negligence or reckless
13.0%
reasonably likely or greater
55.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 17.1% low, 78.0% moderate, 4.9% 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.
3 citations taken to the federal commission · 2% of citations on record
  • Settled 3 · 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 1 decided S&S contests · industry: 79%
0%
Penalty reduction in decided contests
$300 proposed, $300 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 2010-08-09.
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 2010-1118M Settlement Lesnick 2011 $300 → $300
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: 2025-09-17
9
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg9
Show the individual readings (9)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-09-17 Respirable dust, <.1mg 0 Utility Man
2025-09-17 Respirable dust, <.1mg 0 Utility Man
2025-09-17 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-02-03 Respirable dust, <.1mg 0 Laborer, Bullgang
2021-02-03 Respirable dust, <.1mg 0 Mechanic
2014-10-21 Respirable dust, <.1mg 0 Washer Operator
2014-10-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2014-10-21 Respirable dust, <.1mg 0 Utility Man
2014-10-21 Respirable dust, <.1mg 0 Dredge/Barge 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.

Macarthur Sand Plant recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
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 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Oklahoma, metal and nonmetal mining averaged 1.92 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
2025 * 0.00 0.00 0.000
2024 * 4.81 0.00 0.000
2023 * 0.00 0.00 0.000
2022 * 2.16 0.00 0.000
2021 * 3.17 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 0.00 0.00 0.000
2018 * 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. Sand Products Corp 1950 to 1979
  2. General Materials Inc 1979 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 37
2025 41
2024 42
2023 51
2022 42
2021 26
2020 24
2019 22
2018 9
2017 9
2016 9
2015 8
2014 8
2013 7
2012 7
2011 7
2010 9
2009 11
2008 8
2007 9
2006 9
2005 7
2004 9
2003 7
2002 7
2001 7
2000 7
Source: MSHA quarterly employment and production, updated weekly.

Macarthur Sand Plant sits in Oklahoma County, Oklahoma, where the Census mining category is 1.9% 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.
Oklahoma County, Oklahoma · Population 800,487
1.9%
Mining share of county employment
$65,374
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 18,762 5 1 266.5
2026 Q1 19,920 0 0 0.0
2025 Q4 20,791 4 1 192.4
2025 Q3 20,672 0 0 0.0
2025 Q2 20,940 4 0 191.0
2025 Q1 19,538 0 0 0.0
2024 Q4 20,670 6 0 290.3
2024 Q3 20,181 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 21,074 4 1 189.8
2024 Q1 21,159 0 0 0.0
2023 Q4 24,120 5 0 207.3
2023 Q3 24,687 4 0 162.0
2023 Q2 22,013 0 0 0.0
2023 Q1 27,762 5 0 180.1
2022 Q4 29,052 0 0 0.0
2022 Q3 22,421 4 0 178.4
2022 Q2 23,304 0 0 0.0
2022 Q1 17,785 2 0 112.5
2021 Q4 17,682 0 0 0.0
2021 Q3 16,241 0 0 0.0
2021 Q2 18,348 3 0 163.5
2021 Q1 10,870 5 0 460.0
2020 Q4 12,977 0 0 0.0
2020 Q3 14,736 0 0 0.0
2020 Q2 17,067 5 1 293.0
2020 Q1 20,779 5 0 240.6
2019 Q4 17,954 0 0 0.0
2019 Q3 15,156 1 0 66.0
2019 Q2 13,352 0 0 0.0
2019 Q1 7,084 2 1 282.3
2018 Q4 4,900 0 0 0.0
2018 Q3 5,518 0 0 0.0
2018 Q2 5,558 1 0 179.9
2018 Q1 4,989 0 0 0.0
2017 Q4 5,026 0 0 0.0
2017 Q3 5,003 0 0 0.0
2017 Q2 5,275 0 0 0.0
2017 Q1 5,031 0 0 0.0
2016 Q4 5,438 1 0 183.9
2016 Q3 5,321 0 0 0.0
2016 Q2 5,514 1 0 181.4
2016 Q1 4,847 1 0 206.3
2015 Q4 5,061 0 0 0.0
2015 Q3 5,446 0 0 0.0
2015 Q2 5,573 0 0 0.0
2015 Q1 4,821 0 0 0.0
2014 Q4 4,722 1 0 211.8
2014 Q3 5,330 2 2 375.2
2014 Q2 4,854 0 0 0.0
2014 Q1 3,955 0 0 0.0
2013 Q4 4,049 4 0 987.9
2013 Q3 4,252 0 0 0.0
2013 Q2 4,407 1 0 226.9
2013 Q1 4,384 0 0 0.0
2012 Q4 3,392 1 0 294.8
2012 Q3 3,946 1 1 253.4
2012 Q2 3,841 0 0 0.0
2012 Q1 3,783 0 0 0.0
2011 Q4 3,570 0 0 0.0
2011 Q3 4,216 0 0 0.0
2011 Q2 4,505 0 0 0.0
2011 Q1 3,644 1 0 274.4
2010 Q4 3,841 0 0 0.0
2010 Q3 4,652 0 0 0.0
2010 Q2 4,867 3 1 616.4
2010 Q1 5,823 1 0 171.7
2009 Q4 6,854 0 0 0.0
2009 Q3 8,942 0 0 0.0
2009 Q2 7,391 3 1 405.9
2009 Q1 4,481 3 1 669.5
2008 Q4 4,848 0 0 0.0
2008 Q3 5,391 0 0 0.0
2008 Q2 4,907 4 0 815.2
2008 Q1 4,484 2 0 446.0
2007 Q4 4,712 0 0 0.0
2007 Q3 5,332 0 0 0.0
2007 Q2 5,916 0 0 0.0
2007 Q1 3,722 1 0 268.7
2006 Q4 4,668 4 0 856.9
2006 Q3 4,798 0 0 0.0
2006 Q2 4,346 0 0 0.0
2006 Q1 4,666 0 0 0.0
2005 Q4 3,271 0 0 0.0
2005 Q3 4,550 0 0 0.0
2005 Q2 4,410 0 0 0.0
2005 Q1 4,480 0 0 0.0
2004 Q4 5,580 0 0 0.0
2004 Q3 5,940 0 0 0.0
2004 Q2 5,340 1 0 187.3
2004 Q1 5,040 1 0 198.4
2003 Q4 4,340 0 0 0.0
2003 Q3 4,340 6 1 1382.5
2003 Q2 4,480 0 0 0.0
2003 Q1 4,410 0 0 0.0
2002 Q4 3,990 0 0 0.0
2002 Q3 4,410 2 0 453.5
2002 Q2 4,410 0 0 0.0
2002 Q1 4,410 0 0 0.0
2001 Q4 5,120 0 0 0.0
2001 Q3 4,410 0 0 0.0
2001 Q2 4,480 6 0 1339.3
2001 Q1 4,480 0 0 0.0
2000 Q4 4,410 0 0 0.0
2000 Q3 4,480 0 0 0.0
2000 Q2 4,550 0 0 0.0
2000 Q1 5,200 1 1 192.3
No fatalities recorded at this mine.

Reportable incidents

22 on file

2026 · 1 incident

February 16, 2026 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
General Materials Inc · Caught in, under or between a moving and a stationary object

Employees were working on replacing a bearing on the shaker. As they were removing the counterweight with a chain hoist, the bearing slipped off and smashed their right pinky finger.

2024 · 2 incidents

September 9, 2024 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
General Materials Inc · Fall onto or against objects

Employee was putting the main boom back on the 300 excavator, lost EE's balance and fell forward off the excavator track and struck an adjustable step ladder striking EE's right shoulder and right ankle.

August 28, 2024 OK · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor SLIP OR FALL OF PERSON
General Materials Inc · Over-exertion (Not Elsewhere Classified)

While stepping off the dredge anchor onto a slopped hill EE rolled EE's ankle

2023 · 1 incident

August 7, 2023 OK · Metal/Non-Metal welder (non-shop) SLIP OR FALL OF PERSON
General Materials Inc · Fall to the walkway or working surface

EE was on EE's knees under the big dryer baghouse assisting with bag removal. When EE went to stand up EE rolled EE's left ankle and fell. In doing so, EE injured EE's left pinkie finger. EE went home and then to the emergency room and had EE's finger and ankle X-rayed. It was determined EE broke EE's left ankle and dislocated EE's left pinkie finger

2022 · 1 incident

May 2, 2022 OK · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman OTHER
General Materials Inc · Absorption of radiations, caustics, toxic and noxious substances

Employee performing maintenance on plant when stung by bee on left index finger

2021 · 1 incident

December 2, 2021 OK · Metal/Non-Metal master mechanic, foreman, supervisor HANDLING OF MATERIALS
General Materials Inc · Rubbed or abraded

Employee was walking down steps from sand classifying plant and cut hand on handrail. Lacerated fingers, required three (3) sutures at medical facility.

2017 · 1 incident

May 31, 2017 OK · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator OTHER
General Materials Inc · Absorption of radiations, caustics, toxic and noxious substances

Employee was stung by a bee.

2016 · 1 incident

July 5, 2016 OK · Metal/Non-Metal barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand OTHER
General Materials Inc · Bodily reaction, (Not Elsewhere Classified)

Employee bent over to unlock the pad lock on control room door resulting in a back strain.

2014 · 1 incident

May 21, 2014 OK · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
General Materials Inc · Struck by... (Not Elsewhere Classified)

Accident occurred during daylight hours in normal course of operations. Miscommunication, Employee was replacing roller on conveyor when hand was struck by co-worker with hammer.

2012 · 1 incident

May 18, 2012 OK · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
General Materials Inc · Over-exertion (Not Elsewhere Classified)

Employee strained left knee while cleaning equipment with common water hose.

2009 · 3 incidents

April 6, 2009 OK · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
General Materials Inc · Struck by flying object

Employee using compressed air tool, blew foreign body under safety glasses, into his right eye.

February 6, 2009 OK · Metal/Non-Metal barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand HANDLING OF MATERIALS
General Materials Inc · Over-exertion in lifting objects

employee installing down spout pipe, indicated he pull muscle in his right shoulder.

January 26, 2009 OK · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator STEPPING OR KNEELING ON OBJECT
General Materials Inc · Struck against stationary object

Employee, while getting some metal from the bone yard, stepped on a board with a nail in it.

2004 · 1 incident

October 29, 2004 OK · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
General Materials Inc · Struck by falling object

Changing clutch or transmission, socket fell, hit him in the (L) eye.

2003 · 2 incidents

December 19, 2003 OK · Metal/Non-Metal mine manager, mine foreman, mine owner HANDLING OF MATERIALS
General Materials Inc · Caught in, under or between a moving and a stationary object

LOWER BBQ TRAILER ONTO HITCH, CAUGHT FINGER BETWEEN HITCH AND TRUCK.

June 2, 2003 OK · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
General Materials Inc · Over-exertion in pulling or pushing objects

PREPARING TO LAUNCH WORK BOAT, STRAINED RIGHT KNEE TRYING TO PUSH BOAT AWAY FROM DOCK.

2002 · 1 incident

July 16, 2002 OK · Metal/Non-Metal barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand HANDTOOLS (NONPOWERED)
General Materials Inc · Struck by... (Not Elsewhere Classified)

THE DREDGE CHAIN WAS STRUCK AND EMPLOYEE AND INJURED WAS PRYING ON THE CHAIN TO PUT IT BACK IT BACK INTO ITS TRACK. AS EE WAS PRYING ON IT INJURED WAS WATCHING IT TO MAKE SURE IT WAS GOING BAC K INTO ITS TRACK. THE PRYBAR SLIPPED AND STRUCK INJURED ON THE LEFT EYE EYEBROW.

1996 · 1 incident

January 24, 1996 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
General Materials Inc · Fall from machine

EE WAS FREEING UP ROLLERS ON THE 5/8" GRAVEL STACKING CONVEYOR AND UPON COMPLETION OF HIS WORK HE STEPPED ONTO THE HANDRAILING AT BOTTOM OF CONVEYOR AND JUMPED APPROX 3 1/2' TO THE GROUND INST EAD OF USING THE ACESS LADDER PROVIDED. HIS RIGHT ANKLE WAS SPRAINED AS A RESULT.

1992 · 1 incident

September 11, 1992 OK · Metal/Non-Metal welder (shop) MACHINERY
General Materials Inc · Contact with hot objects or substances

EMPLOYEE WAS USING PORTABLE STEAM-CLEANER WASHING UNIT TO CLEAN DIRT FROM AROUND VALVE CONTROLS STATIONS ON SAND PLANT. HE PASSED THE TIP OF THE WAND ACROSS HIS LEFT BOOT AND THE HEAT CAUSED A 2ND DEGREE BURN TO THE SKIN. HE DID NOT REPORT THE INJURY UNTIL 9-14-92.

1989 · 2 incidents

November 17, 1989 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
General Materials Inc · Struck by... (Not Elsewhere Classified)

EMPL WAS ASSISTING IN REMOVAL OF ELECTRIC DRIVE MOTOR & FRAME ASSEMBLY FROM FINE MATERIAL WASHER. AFTER MOTOR HAD BEEN REMOVED IT TURNED OVER LIFTING HCAINS CAME UNHOOKED & LOAD SLID DOWN TANK STIRKING LEGS. BRUISES & LACEATION RESULTED REQURING SUTURES IN RIGHT LEG IN CALF.

April 15, 1989 OK · Metal/Non-Metal welder (shop) MACHINERY
General Materials Inc · Contact with hot objects or substances

WHILE EMPLOYEE WAS WELDING ON PIPELINE A PIECE OF HOT SLAG ENTERED HIS RIGHT EAR. HE DID OT REPORT THE ACCIDENT UNTIL 4/18/89. THE SLAG BURNED A SPOT IN THE INNER EAR CANAL WHICH REQUIRED DEBR IDEMENT,REMOVAL OF FOREIGN OBJECT, AND TREATMENT WITH AMPICILLIN. EMPLOYEE RETURNED TO WORK IMMEDIATELY AFTER TREATMENT.

1986 · 1 incident

November 19, 1986 OK · Metal/Non-Metal welder (shop) ELECTRICAL
General Materials Inc · Flash burns (electric)

EMPLOYEE WAS CH9CKING CONTINUITY ON FUSES IN ELECTRICAL DISCONNECT SWITCH WHEN THE VOLT OHM METER HE WAS USING BLEW UP THE TEST LEADS CAUSED MINOR CUT TO THE FACE AND ELECT. CAUSED MINOR BURN S TO THE HANDS 5ND WRIST THE SWITCH HAD BEEN OPENED PRIOR TO TESTING BUT THE MINI RUPTORS DID NOT RELEASE