Mining Incidents

Thomasville Quarry: 57 MSHA citations Metal/Non-Metal

THOMASVILLE, Davidson County, NC  ·  Active
MSHA Mine ID: 3101475

Thomasville Quarry has $7K in proposed MSHA penalties and $300 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
15
Years on record
1984–2026
Latest incident
Feb 2026
Compliance record
MSHA citations since 2001
57
citations
12
significant & substantial
$7,303
proposed penalties
$7,003
paid to date
96% of proposed penalties paid to date, a $300 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
74
inspections on record
1,164
inspection hours
4.9
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.
57 citations across 1,164 inspection hours.
Source: MSHA inspections data, updated weekly.

Thomasville Quarry has $7K in proposed MSHA penalties and $300 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
$300
outstanding
56 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-12-16.
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.
21.4%
significant & substantial
10.7%
high negligence or reckless
21.4%
reasonably likely or greater
28.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 1.8% low, 87.5% moderate, 10.7% 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: 2025-12-17
7%
of limit-tested samples over the exposure limit
44
samples
15
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz141 over
  • Respirable dust, <.1mg25
  • Unlisted Particulate, respirable, <1% Qtz3
  • Nuisance dust, respirable, <1% Qtz2
Show the individual readings (44)
Date Contaminant Concentration Limit Conc / limit Occupation
2007-11-02 Quartz, respirable, >1% Qtz 0.83 0.76 1.09 Utility Man
2025-12-17 Quartz, respirable, >1% Qtz 0.43 1.3 0.33 Mechanic
2025-12-17 Respirable dust, <.1mg 0 Truck Driver
2025-12-17 Respirable dust, <.1mg 0 Front-end Loader Operator
2025-12-17 Respirable dust, <.1mg 0 Mechanic
2025-06-03 Respirable dust, <.1mg 0 Utility Man
2025-06-03 Quartz, respirable, >1% Qtz 0.22 0.95 0.23 Crusher Oper/Worker
2025-06-03 Respirable dust, <.1mg 0 Truck Driver
2025-06-03 Respirable dust, <.1mg 0 Welder, etc.
2024-05-08 Respirable dust, <.1mg 0 Crusher Oper/Worker
2024-05-08 Respirable dust, <.1mg 0 Drill Operator, Rotary
2024-05-08 Respirable dust, <.1mg 0 Front-end Loader Operator
2024-05-08 Quartz, respirable, >1% Qtz 0.14 Truck Driver
2024-05-08 Respirable dust, <.1mg 0 Utility Man
2023-03-30 Respirable dust, <.1mg 0 Truck Driver
2023-03-30 Respirable dust, <.1mg 0 Crusher Oper/Worker
2023-03-30 Respirable dust, <.1mg 0 Truck Driver
2023-03-30 Respirable dust, <.1mg 0 Utility Man
2023-03-30 Respirable dust, <.1mg 0 Front-end Loader Operator
2022-09-15 Respirable dust, <.1mg 0 Front-end Loader Operator
2022-09-15 Quartz, respirable, >1% Qtz 0.48 0.6 0.80 Utility Man
2022-09-15 Quartz, respirable, >1% Qtz 0.28 0.51 0.55 Utility Man
2022-09-15 Respirable dust, <.1mg 0 Crusher Oper/Worker
2020-07-09 Respirable dust, <.1mg 0 Utility Man
2020-07-09 Respirable dust, <.1mg 0 Utility Man
2020-07-09 Respirable dust, <.1mg 0 Crusher Oper/Worker
2020-07-09 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-06-25 Nuisance dust, respirable, <1% Qtz 0.39 10 0.04 Front-end Loader Operator
2015-06-25 Nuisance dust, respirable, <1% Qtz 0.16 10 0.02 Utility Man
2015-06-25 Respirable dust, <.1mg 0 Crusher Oper/Worker
2015-06-25 Respirable dust, <.1mg 0 Truck Driver
2015-06-25 Unlisted Particulate, respirable, <1% Qtz 0.18 Truck Driver
2012-07-11 Respirable dust, <.1mg 0 Utility Man
2007-10-17 Quartz, respirable, >1% Qtz 0.7 0.78 0.90 Utility Man
2007-10-17 Quartz, respirable, >1% Qtz 0.16 0.69 0.23 Dry Screen Plant Operator
2006-02-08 Quartz, respirable, >1% Qtz 2.43 3.27 0.74 Utility Man
2006-02-08 Quartz, respirable, >1% Qtz 0.17 0.6 0.28 Washer Operator
2004-12-07 Respirable dust, <.1mg 0 Screen/Scalper Operator
2004-12-07 Quartz, respirable, >1% Qtz 0.2 1.49 0.13 Drill Operator, Rotary
2004-12-07 Quartz, respirable, >1% Qtz 0.21 0.51 0.41 Utility Man
2004-12-07 Unlisted Particulate, respirable, <1% Qtz 0.55 Crusher Oper/Worker
2002-07-09 Quartz, respirable, >1% Qtz 0.38 0.51 0.75 Utility Man
2002-07-09 Unlisted Particulate, respirable, <1% Qtz 0.16 Crusher Oper/Worker
2002-07-09 Quartz, respirable, >1% Qtz 0.61 0.74 0.82 Drill Operator, Rotary Air
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.

Thomasville Quarry recorded 8.56 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.
8.56
total case rate
0.00
days-away rate
0.000
fatality rate
Above 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 * 8.56 0.00 0.000
2024 * 0.00 0.00 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 12
2025 12
2024 13
2023 12
2022 12
2021 12
2020 13
2019 12
2018 12
2017 11
2016 10
2015 10
2014 10
2013 9
2012 18
2011 16
2010 16
2009 18
2008 22
2007 21
2006 21
2005 20
2004 20
2003 20
2002 22
2001 22
2000 21
Source: MSHA quarterly employment and production, updated weekly.

Thomasville Quarry sits in Davidson County, North Carolina, where the Census mining category is 0.0% 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.
Davidson County, North Carolina · Population 171,063
0.0%
Mining share of county employment
$62,426
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 6,215 0 0 0.0
2026 Q1 5,802 0 0 0.0
2025 Q4 5,636 0 0 0.0
2025 Q3 4,618 0 0 0.0
2025 Q2 6,552 1 0 152.6
2025 Q1 6,562 0 0 0.0
2024 Q4 6,294 0 0 0.0
2024 Q3 6,096 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 6,632 0 0 0.0
2024 Q1 7,234 0 0 0.0
2023 Q4 8,012 0 0 0.0
2023 Q3 8,126 0 0 0.0
2023 Q2 7,700 0 0 0.0
2023 Q1 5,610 0 0 0.0
2022 Q4 6,027 0 0 0.0
2022 Q3 7,312 0 0 0.0
2022 Q2 6,382 0 0 0.0
2022 Q1 5,012 0 0 0.0
2021 Q4 5,242 0 0 0.0
2021 Q3 5,254 0 0 0.0
2021 Q2 5,636 0 0 0.0
2021 Q1 5,289 0 0 0.0
2020 Q4 5,819 0 0 0.0
2020 Q3 5,366 0 0 0.0
2020 Q2 5,374 0 0 0.0
2020 Q1 5,396 0 0 0.0
2019 Q4 5,889 0 0 0.0
2019 Q3 7,060 0 0 0.0
2019 Q2 6,393 0 0 0.0
2019 Q1 6,422 0 0 0.0
2018 Q4 5,473 0 0 0.0
2018 Q3 5,382 0 0 0.0
2018 Q2 6,070 0 0 0.0
2018 Q1 5,191 0 0 0.0
2017 Q4 5,561 2 1 359.6
2017 Q3 5,463 0 0 0.0
2017 Q2 6,280 0 0 0.0
2017 Q1 5,195 0 0 0.0
2016 Q4 5,475 0 0 0.0
2016 Q3 6,913 1 1 144.7
2016 Q2 6,129 0 0 0.0
2016 Q1 7,082 0 0 0.0
2015 Q4 9,212 0 0 0.0
2015 Q3 6,419 0 0 0.0
2015 Q2 6,627 0 0 0.0
2015 Q1 5,337 0 0 0.0
2014 Q4 6,180 0 0 0.0
2014 Q3 5,782 0 0 0.0
2014 Q2 5,931 0 0 0.0
2014 Q1 4,342 1 0 230.3
2013 Q4 5,366 0 0 0.0
2013 Q3 5,789 0 0 0.0
2013 Q2 5,405 0 0 0.0
2013 Q1 3,996 0 0 0.0
2012 Q4 6,261 0 0 0.0
2012 Q3 7,690 0 0 0.0
2012 Q2 6,383 0 0 0.0
2012 Q1 6,688 0 0 0.0
2011 Q4 6,246 0 0 0.0
2011 Q3 6,008 0 0 0.0
2011 Q2 8,305 0 0 0.0
2011 Q1 6,078 0 0 0.0
2010 Q4 6,030 3 2 497.5
2010 Q3 8,298 0 0 0.0
2010 Q2 8,558 0 0 0.0
2010 Q1 4,471 0 0 0.0
2009 Q4 7,204 0 0 0.0
2009 Q3 6,723 0 0 0.0
2009 Q2 5,292 1 1 189.0
2009 Q1 4,944 2 0 404.5
2008 Q4 6,089 0 0 0.0
2008 Q3 7,128 0 0 0.0
2008 Q2 7,086 1 1 141.1
2008 Q1 7,682 0 0 0.0
2007 Q4 9,556 4 0 418.6
2007 Q3 8,918 0 0 0.0
2007 Q2 6,784 0 0 0.0
2007 Q1 6,996 0 0 0.0
2006 Q4 9,386 1 0 106.5
2006 Q3 10,267 0 0 0.0
2006 Q2 10,869 0 0 0.0
2006 Q1 11,542 1 1 86.6
2005 Q4 11,120 0 0 0.0
2005 Q3 12,088 0 0 0.0
2005 Q2 11,832 0 0 0.0
2005 Q1 11,000 0 0 0.0
2004 Q4 11,786 0 0 0.0
2004 Q3 10,971 0 0 0.0
2004 Q2 10,710 2 1 186.7
2004 Q1 10,225 0 0 0.0
2003 Q4 10,366 2 0 192.9
2003 Q3 10,257 0 0 0.0
2003 Q2 9,344 0 0 0.0
2003 Q1 7,794 0 0 0.0
2002 Q4 7,794 0 0 0.0
2002 Q3 10,510 2 0 190.3
2002 Q2 12,498 2 0 160.0
2002 Q1 10,940 0 0 0.0
2001 Q4 11,966 0 0 0.0
2001 Q3 11,098 0 0 0.0
2001 Q2 12,218 0 0 0.0
2001 Q1 12,614 1 0 79.3
2000 Q4 12,308 0 0 0.0
2000 Q3 11,014 0 0 0.0
2000 Q2 11,398 0 0 0.0
2000 Q1 10,441 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

15 on file

2026 · 1 incident

February 10, 2026 NC · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor FALLING/SLIDING/ROLLING MATERIALS
Martin Marietta Materials Inc · Struck by falling object

Metal plate fell onto employees foot. Incident did not become reportable until 2/16/2026 when employee sought metal attention and was diagnosed with fractures.

2025 · 2 incidents

July 7, 2025 NC · Metal/Non-Metal master mechanic, foreman, supervisor HANDLING OF MATERIALS
Martin Marietta Materials Inc · Struck by flying object

While removing an expanded metal guard bent around a motor shaft, the guard flexed back to a straight position after the bolt was removed striking and cutting the employee's nose. employee received 5 stitches.

May 5, 2025 NC · Metal/Non-Metal ENTRAPMENT
Martin Marietta Materials Inc · Accident type, without injuries

Customer truck driver entered quarry entrance with bed raised striking overhead communication lines. This resulted in three poles breaking and the overhead power lines falling to the ground behind the truck. Driver was required to remain in truck until power company deenergized lines

2010 · 1 incident

August 24, 2010 NC · Metal/Non-Metal rock driller HANDLING OF MATERIALS
Martin Marietta Materials Inc · Caught in, under or between a moving and a stationary object

EE was pulling the PC-100 air compressor about 2.5' by the tongue so that the fuel hose from the lube truck would reach the fuel tank on the compressor. The wheel rolled over a small hump which caused the compressor to roll forward quickly and pinched the EE's finger between the tongue and the door of the truck. Resulted in stitches to his right index finger.

2002 · 2 incidents

August 1, 2002 NC · Metal/Non-Metal welder (shop) SLIP OR FALL OF PERSON
Martin Marietta Aggregates · Fall onto or against objects

EE WAS PREPARING TOINSTALL A 36" X 47" PLATE OVER A CHUTE, HE WAS STANDING ON A BOARD. AS COWORKERS WERE LOWERING THE PLATE INTO PLACE WITH A CHAIN HOIST, EE SLIPPED AND FELL DOWN INTO THE CHU TE STRIKING HEAD ON METAL IN CHUTE.

August 1, 2002 NC · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Caught in, under or between (Not Elsewhere Classified)

EE WAS LOWERING A PLATE INTO A CHUTE USING A CHAIN HOIST. WHEN EE UNDER SLIPPED, THE HOIST MOVED CAUSING CHAIN TO PINCH EE'S HAND.

1998 · 2 incidents

March 23, 1998 NC · Metal/Non-Metal mine manager, mine foreman, mine owner SLIP OR FALL OF PERSON
Martin Marietta Aggregates · Fall from piled material

EE WAS SPOTTING FOR LOADER OPERATOR WHO WAS PUSHING OFF BERM, THE GROUND GAVE WAY CAUSING HIM TO FALL 30-35'. HE HAS A BROKEN LEFT LEG, TWO CRACKED VERTEBRAIE, CUTS AND BRUISES.

March 9, 1998 NC · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Martin Marietta Aggregates · Struck against stationary object

THREE EMPLOYEE WERE REMOVING SCRAP METAL FROM PLATFORM. EMPLOYEE WAS PUSHING THE METAL WITH HIS HANDS WHEN IT CAUGHT ON A BOLT, THE METAL STOPPED SUDDENLY. EMPLOYEE STRUCK THE SIDE OF HIS MOUT H OVER IT.

1992 · 2 incidents

November 9, 1992 NC · Metal/Non-Metal drill operator HANDLING OF MATERIALS
Martin Marietta Aggregates · Ingestion of radiations, caustics, toxic and noxious substances

EMPLOYEE WAS IN THE SHOP OFFICE WITH COWORKERS FILLING OUT DAILY REPORTS AT THE END OF DAY HE PICKED UP ANOTHER EMPLOYEES WATER COOLER & DRANK FROM IT UNKNOWINGLY TO HIM IT CONTAINED ANTIFREEZ E FOREMAN REPORTED IT TO THE PLANT MANAGER & EMPLOYEE WAS SENT IMMEDIATELY TO THE HOSPITAL

August 24, 1992 NC · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Struck by falling object

54730BREAKING A BRIDGE OF STONE LOOSE UNDER JAW CRUSHER USING A PRY BAR. THE LOOSENED STONE FELL ON EMPL HAND BADLY BRUISING & CUTTING IT. THE CUT REQUIRED 2 STITCHES.

1990 · 1 incident

April 5, 1990 NC · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Struck by flying object

EMPL REPLACING TRACK PIN ON 30 B CRANE TRACKS DRIVING WITH SLEDGE HAMMER.PIECE OF PIN CHIPPED OFF STRIKING EMPL IN LEFT LEG BELOW KNEE.METAL SURGICALLY REMOVED AT EMERG RM.

1989 · 1 incident

October 23, 1989 NC · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Fall onto or against objects

EMMPL WAS USING 1 1/2 TON CHAIN PULLER LIFTING UP BACK OF SYNTRON FEEDER WHILE RESTING FEET ON FEEDER. CHAIN WAS HOOKED AROUND FEEDER & HOIST FASTENED TO CHAIN. HOOK ON CHAIN FAILED & FEDER DR OPPED CAUSING EMPL TO LOSE FOOTING. HE GRABBED FOR ANGLE IRON BRACE & CAUGHT GLOVE ON BRACE & PRESSURE OF WEIGHT AGAINST METAL FRACTURED LITTLE FINGER BONE OF LEFT HAND.

1987 · 1 incident

October 19, 1987 NC · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Martin Marietta Aggregates · Caught in, under or between a moving and a stationary object

I.NAME ALONG WI7H #2 EMPL AND #3 EMPL INSTALLING NEW TRAVEL CHAINS ON CRANE.CONNECTING ENDS OF CHAIN TOGETHER THE CHAIN SLIPPED,JAMMING I.ANME FINGER BETWEEN CHAIN AND DRIVE SPROCKET.

1984 · 2 incidents

September 7, 1984 NC · Metal/Non-Metal outside foreman, leadman HANDLING OF MATERIALS
Martin Marietta Aggregates · Caught in, under or between a moving and a stationary object

FOREMAN WAS HELPING THE MECHANIC AND THREE OTHER EMPLOYEES TO LIFT HOGSHEAD INTO BARREL WHEN HOGSHEAD SLIPPED AND CAUGHT EMPLOYEE BETWEEN THE HOGSHEAD AND THE BARREL. THE FOREMAN RECEIVED A LA CERATION TO HIS PENIS.

July 14, 1984 NC · Metal/Non-Metal ledgeman/hand, quarry man HANDTOOLS (NONPOWERED)
Martin Marietta Aggregates · Struck by flying object

EMP WAS TRYING TO KNOCK A PIN OUT OF A HOIST CYLINDER USING NON-HARDENED PIECE OF STEEL AND A SLEDGE HAMMER. A PIECE OF CHIPPED METAL FLEW OFF OF THE PIN AND LODGED ABOVE THE EMPLOYEES R KNEE. THERE IS NO PERMANENT DAMAGE