Mining Incidents

Kings Mountain Plant: 110 MSHA citations Metal/Non-Metal

Kings Mountain, Cleveland County, NC  ·  Active
MSHA Mine ID: 3100047

Kings Mountain Plant has $22K in proposed MSHA penalties and $357 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
16
Years on record
1987–2024
Latest incident
Feb 2024
Compliance record
MSHA citations since 2000
110
citations
24
significant & substantial
$21,779
proposed penalties
$21,422
paid to date
98% of proposed penalties paid to date, a $357 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
83
inspections on record
1,584
inspection hours
6.9
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.
110 citations across 1,584 inspection hours.
Source: MSHA inspections data, updated weekly.

Kings Mountain Plant has $22K in proposed MSHA penalties and $357 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.
$22K
proposed penalties
$22K
current assessed
$21K
paid to date
$357
outstanding
110 assessments are final orders; 1 contested dockets.
Of $100 in penalties contested before the Commission, $100 was upheld in final decisions.
As of the most recent assessment on 2026-01-07.
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.
21.8%
significant & substantial
13.6%
high negligence or reckless
21.8%
reasonably likely or greater
49.1%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 12.7% low, 73.6% moderate, 13.6% 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.
1 citations taken to the federal commission · 1% of citations on record
  • Stood as issued 1 · 100%
0%
Penalty reduction in decided contests
$100 proposed, $100 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 2010-05-27.
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
SE 2010-801M Default Lesnick 2011 $100 → $100
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: 2023-09-27
0%
of limit-tested samples over the exposure limit
31
samples
14
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz14
  • Respirable dust, <.1mg14
  • Nuisance dust, respirable, <1% Qtz2
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (31)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-09-27 Respirable dust, <.1mg 0 Drill Operator, Rotary
2023-09-27 Quartz, respirable, >1% Qtz 0.18 Welder, etc.
2023-09-27 Quartz, respirable, >1% Qtz 0.53 1.61 0.33 Utility Man
2023-09-27 Respirable dust, <.1mg 0 Front-end Loader Operator
2023-09-27 Respirable dust, <.1mg 0 Crusher Oper/Worker
2022-05-11 Quartz, respirable, >1% Qtz 0.42 Laborer, Bullgang
2022-05-11 Nuisance dust, respirable, <1% Qtz 0.16 10 0.02 Truck Driver
2017-10-24 Nuisance dust, respirable, <1% Qtz 0.16 10 0.02 Lab Technician
2017-10-24 Respirable dust, <.1mg 0 Front-end Loader Operator
2017-10-24 Respirable dust, <.1mg 0 Truck Driver
2017-10-24 Respirable dust, <.1mg 0 Utility Man
2017-10-24 Quartz, respirable, >1% Qtz 0.18 1.22 0.15 Utility Man
2017-03-21 Respirable dust, <.1mg 0 Drill Operator, Rotary
2017-03-21 Respirable dust, <.1mg 0 Jackhammer Operator
2017-03-21 Quartz, respirable, >1% Qtz 0.22 1.44 0.15 Cleanup Man
2016-09-13 Quartz, respirable, >1% Qtz 0.19 1.22 0.16 Utility Man
2016-09-13 Quartz, respirable, >1% Qtz 0.15 1.3 0.12 Drill Operator, Rotary
2016-09-13 Quartz, respirable, >1% Qtz 0.12 0.86 0.14 Crusher Oper/Worker
2013-09-11 Quartz, respirable, >1% Qtz 0.14 0.8 0.18 Cleanup Man
2013-09-11 Quartz, respirable, >1% Qtz 0.14 0.38 0.37 Diamond Drill Operator
2013-09-11 Respirable dust, <.1mg 0 Mechanic
2013-09-11 Quartz, respirable, >1% Qtz 0.22 1.91 0.12 Cleanup Man
2009-03-11 Respirable dust, <.1mg 0 Washer Operator
2009-03-11 Respirable dust, <.1mg 0 Front-end Loader Operator
2004-08-25 Unlisted Particulate, respirable, <1% Qtz 0.74 Crusher Oper/Worker
2004-08-25 Respirable dust, <.1mg 0 Drill Operator, Rotary
2004-08-25 Respirable dust, <.1mg 0 Truck Driver
2004-08-25 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2001-10-24 Quartz, respirable, >1% Qtz 0.29 1.46 0.20 Utility Man
2001-10-24 Quartz, respirable, >1% Qtz 0.26 0.44 0.59 Truck Driver
2001-10-24 Quartz, respirable, >1% Qtz 0.68 0.86 0.79 Crusher Oper/Worker
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.

Kings Mountain 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 North Carolina, metal and nonmetal mining averaged 1.14 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 * 4.68 4.68 0.000
2023 * 0.00 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 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. Martin Marietta Aggregates 1950 to 2005
  2. Martin Marietta Materials, Inc. 2005 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 21
2025 21
2024 19
2023 20
2022 20
2021 21
2020 22
2019 22
2018 20
2017 17
2016 16
2015 14
2014 15
2013 18
2012 20
2011 19
2010 19
2009 18
2008 18
2007 19
2006 21
2005 18
2004 18
2003 18
2002 18
2001 19
2000 20
Source: MSHA quarterly employment and production, updated weekly.

Kings Mountain Plant sits in Cleveland County, North Carolina, 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.
Cleveland County, North Carolina · Population 100,170
0.2%
Mining share of county employment
$55,769
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 11,743 0 0 0.0
2026 Q1 10,837 1 0 92.3
2025 Q4 10,440 0 0 0.0
2025 Q3 9,877 0 0 0.0
2025 Q2 11,255 1 0 88.8
2025 Q1 11,628 0 0 0.0
2024 Q4 9,668 2 0 206.9
2024 Q3 10,935 6 4 548.7
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 10,971 2 0 182.3
2024 Q1 11,147 0 0 0.0
2023 Q4 12,231 2 0 163.5
2023 Q3 11,533 0 0 0.0
2023 Q2 12,006 3 1 249.9
2023 Q1 11,383 4 2 351.4
2022 Q4 11,503 0 0 0.0
2022 Q3 12,666 0 0 0.0
2022 Q2 11,031 1 0 90.7
2022 Q1 11,386 0 0 0.0
2021 Q4 12,933 4 0 309.3
2021 Q3 12,583 3 0 238.4
2021 Q2 10,780 0 0 0.0
2021 Q1 9,495 0 0 0.0
2020 Q4 9,949 0 0 0.0
2020 Q3 10,138 1 0 98.6
2020 Q2 11,171 0 0 0.0
2020 Q1 10,541 0 0 0.0
2019 Q4 12,251 1 0 81.6
2019 Q3 12,883 0 0 0.0
2019 Q2 13,285 0 0 0.0
2019 Q1 11,537 0 0 0.0
2018 Q4 11,971 1 0 83.5
2018 Q3 12,736 2 0 157.0
2018 Q2 10,532 0 0 0.0
2018 Q1 10,003 0 0 0.0
2017 Q4 9,257 0 0 0.0
2017 Q3 8,802 0 0 0.0
2017 Q2 8,097 1 0 123.5
2017 Q1 8,092 1 0 123.6
2016 Q4 8,732 0 0 0.0
2016 Q3 10,120 3 0 296.4
2016 Q2 8,626 0 0 0.0
2016 Q1 8,250 0 0 0.0
2015 Q4 8,094 1 0 123.5
2015 Q3 7,132 0 0 0.0
2015 Q2 6,880 0 0 0.0
2015 Q1 6,087 0 0 0.0
2014 Q4 7,480 0 0 0.0
2014 Q3 6,829 0 0 0.0
2014 Q2 7,603 0 0 0.0
2014 Q1 6,950 0 0 0.0
2013 Q4 8,543 0 0 0.0
2013 Q3 9,657 2 0 207.1
2013 Q2 10,008 0 0 0.0
2013 Q1 8,371 2 1 238.9
2012 Q4 10,406 0 0 0.0
2012 Q3 9,129 0 0 0.0
2012 Q2 9,907 0 0 0.0
2012 Q1 10,063 3 1 298.1
2011 Q4 12,231 0 0 0.0
2011 Q3 12,278 1 0 81.4
2011 Q2 10,879 0 0 0.0
2011 Q1 8,977 1 0 111.4
2010 Q4 10,711 0 0 0.0
2010 Q3 10,702 1 0 93.4
2010 Q2 9,834 0 0 0.0
2010 Q1 8,295 7 3 843.9
2009 Q4 10,083 0 0 0.0
2009 Q3 9,453 0 0 0.0
2009 Q2 9,239 0 0 0.0
2009 Q1 7,177 1 0 139.3
2008 Q4 9,871 1 0 101.3
2008 Q3 10,086 0 0 0.0
2008 Q2 9,219 3 2 325.4
2008 Q1 8,443 0 0 0.0
2007 Q4 8,818 0 0 0.0
2007 Q3 8,597 0 0 0.0
2007 Q2 9,214 0 0 0.0
2007 Q1 8,122 0 0 0.0
2006 Q4 8,917 0 0 0.0
2006 Q3 8,426 3 0 356.0
2006 Q2 9,101 1 0 109.9
2006 Q1 8,655 3 1 346.6
2005 Q4 9,246 0 0 0.0
2005 Q3 9,122 0 0 0.0
2005 Q2 9,579 0 0 0.0
2005 Q1 8,753 0 0 0.0
2004 Q4 9,353 0 0 0.0
2004 Q3 7,948 1 0 125.8
2004 Q2 8,683 0 0 0.0
2004 Q1 8,602 3 2 348.8
2003 Q4 8,051 0 0 0.0
2003 Q3 8,649 1 0 115.6
2003 Q2 8,062 0 0 0.0
2003 Q1 6,966 0 0 0.0
2002 Q4 7,873 0 0 0.0
2002 Q3 8,911 2 0 224.4
2002 Q2 10,993 0 0 0.0
2002 Q1 9,303 0 0 0.0
2001 Q4 10,638 5 1 470.0
2001 Q3 10,052 0 0 0.0
2001 Q2 9,701 1 0 103.1
2001 Q1 9,426 0 0 0.0
2000 Q4 9,929 1 0 100.7
2000 Q3 10,968 0 0 0.0
2000 Q2 11,097 1 0 90.1
2000 Q1 10,903 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

16 on file

2024 · 1 incident

2016 · 1 incident

2015 · 1 incident

September 9, 2015 NC · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Materials, Inc. · Struck against stationary object

Plant mechanic was removing a pump from the track hoe. He had the 1/2" drive socket and ratchet on the bolt applying downward force when it suddenly broke loose and moved in a downward motion. His left arm brushed another component in the engine compartment and was lacerated just near his elbow. *Requiring four stitches.

1997 · 1 incident

October 30, 1997 NC · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor OTHER
Martin Marietta Aggregates · (Not Elsewhere Classified)

EMPLOYEE CAME INTO THE OFFICE AND MADE COFFEE. HE THEN WEN TUP TO THE SHOP & TRDED PESONAL VEHICLE FOR FOREMANS PICKUP AND RETURNED TO THE OFFICE. HE SAT DOWN IN A CHAIR IN THE ENTRANCE WAY. A FEW MINUTES LATER HE SLUMPED OVER. "911" WAS CALLED IMMEADIATELY AND CPR WAS ADMINISTERED UNTIL EMTS ARRIVED. DEATH DID OCCUR.

1996 · 1 incident

August 13, 1996 NC · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
Martin Marietta Aggregates · Struck by... (Not Elsewhere Classified)

EE WAS HELPING OTHER EE PLACE A 24" SECTION OF CORRUGATED PIPE IN PLACE AND WAS ATTEMPTING TO FASTEN THE BANK CLAMP WHEN THE BAND CAME LOOSE AND STRUCK HIM ON THE LEFT CHEEK, CAUSING A SMALL C UT.

1995 · 1 incident

September 15, 1995 NC · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Martin Marietta Aggregates · Struck by falling object

EMPLOYEE WAS TRYING TO DISLODGE LUMP OF ABC MATERIAL IN GATE FEEDER BOX. EMPLOYEE REACHED IN AND TURNED MATERIAL, THIS CAUSED THE MATERIAL TO RELEASE AND FALL ON HIS RIGHT HAND AND CAUSED FRAC URE AND SMALL CUT (3 STITCHES) ON FIRST FINGER ORIGHT HAND.

1994 · 2 incidents

August 8, 1994 NC · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Struck against a moving object

EMPLOYEE WAS CUTTING BRUSH IN AREA OF NEW ELECTRICAL LINE (FOR PIT PUMP) WHEN HE STUMBLED AND HAND SLID DOWN HANDLE AND ONTO BLADE OF KNIFE CUTTING RIGHT HAND.

July 7, 1994 NC · Metal/Non-Metal drill operator MACHINERY
Martin Marietta Aggregates · Struck by... (Not Elsewhere Classified)

EE WAS DRILLING AND ATTEMPTING TO INSTALL CASING. AS HE WAS PUSHING CASING DOWN WITH DRILL BIT, THE CASING CAUGHT ON A ROCK AND KICKED TO THE SIDE, STRIKING EE ON FOREHEAD AND CAUSING A LACERA TION. CASING WAS 4" AND BIT WAS 5".

1990 · 2 incidents

June 22, 1990 NC · Metal/Non-Metal drill operator MACHINERY
Martin Marietta Aggregates · Caught in, under or between (Not Elsewhere Classified)

DRILLER WAS ATTEMPTING TO INSTALL DRILL STEEL IN COUPLING WHEN WRENCH BROKE, CAUSING LEFT THUMB TO BE PINCHED BETWEEN COUPLING AND DRILL STEEL CAUSING LACERATION ON LEFT THUMB.

May 18, 1990 NC · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Struck by... (Not Elsewhere Classified)

WELDER WALKED UP TO 30-B CRANE AS OTHER EE STRUCK TRACK PIN WITH HAMMER, PIN CHIPPED AND CHIP STRUCK WELDER ON LEFT LOWER ARM CAUSING A SMALL PUNCTURE WOUND.

1989 · 2 incidents

October 7, 1989 NC · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Absorption of radiations, caustics, toxic and noxious substances

EMPL HAD ALLERGIC REACTION TO PAIN & EYES BECAME SWOLLEN HE WENT TO HOSPITAL EMERGENCY ROOM NEXT DAY & REPORTED TO FOREMEN 10/9/89.

June 13, 1989 NC · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
Martin Marietta Aggregates · Caught in, under or between (Not Elsewhere Classified)

INSTALLING BEAM TO PROTECT CONDUIT BEA M SLIPPED AND CAUGHT FINGERS BETWEEN BEAM AND CONDUIT CUT 3RD FINER AND BROKE 4 THE FINGER L HAND

1988 · 3 incidents

November 23, 1988 NC · Metal/Non-Metal welder (shop) SLIP OR FALL OF PERSON
Martin Marietta Aggregates · Fall onto or against objects

EMPLOYEE WAS WELDING FEEDER BOX SUPPORT WHEN HE FELL AGAINST STEEL AND LACERATED LEFT BACK THIS CONSTRUCTION WAS IN PROGRESS DURING WET RAINY WEATHER

March 22, 1988 NC · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Martin Marietta Aggregates · Over-exertion in pulling or pushing objects

WHILE PULLING GUARD FROM #2 SURGE CONVEYOR, EMPLOYEE STRAINED BACK.

February 19, 1988 NC · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Martin Marietta Aggregates · Caught in, under or between two or more moving objects

WHILE HOISTING SCREEN CLOTH FROM GROUND TO SCRFEEN TOWER EMPLOYEES HAND WAS PINCHED BETWEEN CABLE & WINCH CAUSING A LACERATION OF PALM LEFT HAND

1987 · 1 incident

June 23, 1987 NC · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Struck by... (Not Elsewhere Classified)

EMP WAS BREAKIN1 A CRUSHER JAM, ROCK SHATTERED AND A PIECE HIT HIM IN MOUTH BREAKING OFF A PIECE OF #7 MAXILLARY RIGHT LATERAL TOOTH