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U.S. MINING ENTITIES / CONTROLLER / M00174

ACTIVE / CONTROLLER PORTFOLIO

Martin Marietta Materials Inc

Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.

MSHA CONTROLLER IDM00174

MINE PORTFOLIO

271 of 271 mines and facilities

2025-01-01 – 2026-10-18. Active records; production reporting is not required.

Material, method and type filters apply to this table. The portfolio’s status applies to the entire page. GEM fields describe their own release, not the selected MSHA year.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
211 QUARRY4103829 · Active6/8 quarters reportedBexar, TXSurface · MSHA: Crushed, Broken Limestone NEC020,9831026.0
ABINGDON QUARRY4400003 · Active6/8 quarters reportedWashington, VASurface · MSHA: Crushed, Broken Limestone NEC036,09030130.0
Alden Portable Plant #21302033 · Active6/8 quarters reportedHardin, IASurface · MSHA: Crushed, Broken Limestone NEC030,5173017.3
Alden Portable Sand1302037 · Active6/8 quarters reportedHardin, IASurface · MSHA: Construction Sand and Gravel05,7051013.8
Alden Quarry and Shop1300228 · Active6/8 quarters reportedHardin, IASurface · MSHA: Crushed, Broken Limestone NEC067,6125063.3
Allsboro Quarry & Mill0102014 · Active6/8 quarters reportedColbert, ALSurface · MSHA: Crushed, Broken Limestone NEC054,5473128.3
Amargosa Quarry and Plant2601043 · Active6/8 quarters reportedNye, NVSurface · MSHA: Clay, Ceramic, Refractory Mnls.0148,84715127.3
American Stone Quarry3100189 · Active6/8 quarters reportedOrange, NCSurface · MSHA: Crushed, Broken Granite018,7591030.0
AMES MINE1300014 · Active6/8 quarters reportedStory, IAUnderground · MSHA: Crushed, Broken Limestone NEC0258,902470448.8
Anderson Creek Quarry4402963 · Active6/8 quarters reportedGoochland, VASurface · MSHA: Crushed, Broken Granite041,56332120.3
Apex Quarry and Plant2600081 · Active6/8 quarters reportedClark, NVSurface · MSHA: Lime0332,066324169.5
Appling Quarry0901083 · Active6/8 quarters reportedColumbia, GASurface · MSHA: Crushed, Broken Granite035,9963038.8
ARROWOOD3100059 · Active6/8 quarters reportedMecklenburg, NCSurface · MSHA: Crushed, Broken Granite093,206161205.8
ASHEBORO3100066 · Active6/8 quarters reportedRandolph, NCSurface · MSHA: Crushed, Broken Granite035,5960037.0
Auburn Quarry0100006 · Active6/8 quarters reportedLee, ALSurface · MSHA: Crushed, Broken Limestone NEC043,0770014.8
AUBURN QUARRY0900436 · Active6/8 quarters reportedBarrow, GASurface · MSHA: Crushed, Broken Granite046,4212058.5
Augusta Quarry0900065 · Active6/8 quarters reportedRichmond, GASurface · MSHA: Crushed, Broken Sandstone0120,34451108.0
Auxvasse South Quarry2302009 · Active6/8 quarters reportedCallaway, MOSurface · MSHA: Crushed, Broken Limestone NEC045,7868048.3
BAKERS QUARRY3100071 · Active6/8 quarters reportedUnion, NCSurface · MSHA: Crushed, Broken Limestone NEC032,8331047.5
BALLGROUND MINE SITE0900955 · Active6/8 quarters reportedCherokee, GASurface · MSHA: Crushed, Broken Stone NEC082,5631076.3
Barnhart Quarry2302469 · Active6/8 quarters reportedJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC0102,9649155.3
Beckmann Quarry4101335 · Active6/8 quarters reportedBexar, TXSurface · MSHA: Crushed, Broken Limestone NEC0164,07211194.3
Bedrock Plant4103283 · Active6/8 quarters reportedKerr, TXSurface · MSHA: Construction Sand and Gravel026,5501030.5
BELGRADE QUARRY3100064 · Active6/8 quarters reportedOnslow, NCSurface · MSHA: Crushed, Broken Limestone NEC062,1220056.0
Bells/Savoy Aggregate Operations4104019 · Active6/8 quarters reportedFannin, TXSurface · MSHA: Construction Sand and Gravel073,55413162.5
Belmont Sand & Gravel1201911 · Active6/8 quarters reportedMarion, INSurface · MSHA: Construction Sand and Gravel027,6912032.3
Benson Quarry3101979 · Active6/8 quarters reportedJohnston, NCSurface · MSHA: Crushed, Broken Granite0105,7891049.3
Berkeley Quarry3800072 · Active6/8 quarters reportedBerkeley, SCSurface · MSHA: Crushed, Broken Limestone NEC081,550100118.5
BESSEMER CITY QUARRY3101105 · Active6/8 quarters reportedGaston, NCSurface · MSHA: Crushed, Broken Granite06,2140135.8
Black Rock Quarry & Plant0300011 · Active6/8 quarters reportedLawrence, ARSurface · MSHA: Crushed, Broken Limestone NEC036,7006041.5
Black Spur Quarry4104159 · Active6/8 quarters reportedUvalde, TXSurface · MSHA: Crushed, Broken Limestone NEC092,9582062.3
Bluff City Mine1100122 · Active6/8 quarters reportedMadison, ILUnderground · MSHA: Crushed, Broken Limestone NEC0190,731275257.0
Bonds Gravel Pit3101963 · Active6/8 quarters reportedCabarrus, NCSurface · MSHA: Crushed, Broken Sandstone040,1151039.0
Boonsboro Quarry1800024 · Active6/8 quarters reportedWashington, MDSurface · MSHA: Crushed, Broken Limestone NEC025,0651040.0
Boonville Quarry2300097 · Active6/8 quarters reportedCooper, MOSurface · MSHA: Crushed, Broken Limestone NEC015,2522033.0
Bowling Green North Quarry1500065 · Active6/8 quarters reportedWarren, KYSurface · MSHA: Crushed, Broken Stone NEC025,62890141.5
Bowling Green South Quarry1500025 · Active6/8 quarters reportedWarren, KYSurface · MSHA: Crushed, Broken Limestone NEC035,074100167.3
Bridgeport Stone Plant4100007 · Active6/8 quarters reportedWise, TXSurface · MSHA: Crushed, Broken Limestone NEC0226,416151150.3
Broken Bow Sand & Gravel3400460 · Active6/8 quarters reportedMccurtain, OKSurface · MSHA: Construction Sand and Gravel039,1514040.5
BUILDEX2300319 · Active6/8 quarters reportedPlatte, MOSurface · MSHA: Common Shale071,94518369.8
Burlington Quarry3100042 · Active6/8 quarters reportedAlamance, NCSurface · MSHA: Crushed, Broken Granite045,1885048.0
BURNING SPRINGS MINE4608862 · Active6/8 quarters reportedWood, WVUnderground · MSHA: Crushed, Broken Limestone NEC069,45401223.3
CALDWELL QUARRY3101869 · Active6/8 quarters reportedCaldwell, NCSurface · MSHA: Crushed, Broken Granite06,2080043.8
Calhoun Quarry4003395 · Active6/8 quarters reportedMcminn, TNSurface · MSHA: Crushed, Broken Limestone NEC012,2820038.5
Calhoun Sand3800716 · Active6/8 quarters reportedLexington, SCSurface · MSHA: Sand, Common034,0111053.3
Carmel Sand & Gravel1202124 · Active6/8 quarters reportedHamilton, INSurface · MSHA: Construction Sand and Gravel021,5376048.3
Castle Hayne Quarry3100063 · Active6/8 quarters reportedNew Hanover, NCSurface · MSHA: Crushed, Broken Limestone NEC083,7210259.0
CAYCE QUARRY3800016 · Active6/8 quarters reportedLexington, SCSurface · MSHA: Crushed, Broken Granite089,025134107.0
Cedar Rapids Quarry1300122 · Active6/8 quarters reportedLinn, IASurface · MSHA: Crushed, Broken Limestone NEC034,7790029.0
Cedarville Limestone3304072 · Active6/8 quarters reportedGreene, OHSurface · MSHA: Crushed, Broken Limestone NEC024,2452050.8
CENTRAL ROCK QUARRY3100050 · Active6/8 quarters reportedGuilford, NCSurface · MSHA: Crushed, Broken Granite043,7483058.8
Champ Quarry2300220 · Active6/8 quarters reportedSt Louis, MOSurface · MSHA: Crushed, Broken Limestone NEC0175,8285374.0
CHARLOTTE QUARRY3100057 · Active6/8 quarters reportedMecklenburg, NCSurface · MSHA: Crushed, Broken Granite088,4400272.0
Chattanooga Quarry4003159 · Active6/8 quarters reportedHamilton, TNSurface · MSHA: Crushed, Broken Limestone NEC042,3461285.0
CHESTERFIELD QUARRY3800682 · Active3/8 quarters reportedChesterfield, SCSurface · MSHA: Crushed, Broken Stone NEC02,78513028.5
Churchville Quarry1800012 · Active6/8 quarters reportedHarford, MDSurface · MSHA: Dimension Stone NEC062,3471142.0
Clarkdale Plant #240202524 · Active6/8 quarters reportedYavapai, AZSurface · MSHA: Construction Sand and Gravel027,2832022.8
CLARKS QUARRY3102009 · Active6/8 quarters reportedCraven, NCSurface · MSHA: Crushed, Broken Limestone NEC093,3442068.0
Clayton Aggregates0400159 · Active6/8 quarters reportedContra Costa, CASurface · MSHA: Crushed, Broken Stone NEC053,4346044.0
Clifton Plant4100013 · Active6/8 quarters reportedBosque, TXSurface · MSHA: Lime0264,596475153.5
Cloverdale Quarry1201744 · Active6/8 quarters reportedPutnam, INSurface · MSHA: Crushed, Broken Limestone NEC035,7594052.3
Columbia West Quarry2300022 · Active6/8 quarters reportedBoone, MOSurface · MSHA: Crushed, Broken Limestone NEC062,37112038.3
Coolidge Plant 650203173 · Active6/8 quarters reportedPinal, AZSurface · MSHA: Construction Sand and Gravel044,4890018.0
COY STONE PLANT ADDITION4002465 · Active6/8 quarters reportedJefferson, TNSurface · MSHA: Crushed, Broken Limestone NEC06,1152037.0
Crab Orchard Mine and Mill4000087 · Active6/8 quarters reportedCumberland, TNUnderground · MSHA: Crushed, Broken Limestone NEC0199,726141426.3
Cumberland Quarry1500037 · Active6/8 quarters reportedLetcher, KYSurface · MSHA: Crushed, Broken Limestone NEC02,7881040.8
Cumming Mine Site0900460 · Active6/8 quarters reportedForsyth, GASurface · MSHA: Crushed, Broken Stone NEC072,64571116.8
Davis Quarry3401299 · Active6/8 quarters reportedMurray, OKSurface · MSHA: Crushed, Broken Limestone NEC092,57611056.0
Denver Quarry3101971 · Active6/8 quarters reportedLincoln, NCSurface · MSHA: Crushed, Broken Granite028,45211165.8
Des Moines Portable #11300150 · Active6/8 quarters reportedMadison, IASurface · MSHA: Crushed, Broken Limestone NEC059,2396055.8
De Soto Sand1401302 · Active6/8 quarters reportedJohnson, KSSurface · MSHA: Construction Sand and Gravel012,4560014.3
DOSWELL QUARRY4400045 · Active6/8 quarters reportedHanover, VASurface · MSHA: Crushed, Broken Granite072,6255378.3
DOUGLAS PLANT0200022 · Active6/8 quarters reportedCochise, AZSurface · MSHA: Lime06,3540014.0
DOUGLASVILLE MINE SITE0900024 · Active6/8 quarters reportedDouglas, GASurface · MSHA: Crushed, Broken Stone NEC048,7453057.3
DSM Portable Sand1302504 · Active6/8 quarters reportedMarshall, IASurface · MSHA: Construction Sand and Gravel023,2527225.8
DuBois Quarry2501046 · Active6/8 quarters reportedPawnee, NESurface · MSHA: Crushed, Broken Limestone NEC030,5966132.8
Durham Mine & Mill1301225 · Active6/8 quarters reportedMarion, IAUnderground · MSHA: Crushed, Broken Limestone NEC0103,84481205.3
EAGLE VALLEY AGGREGATES0404758 · Active6/8 quarters reportedRiverside, CASurface · MSHA: Construction Sand and Gravel074,3492056.8
Earlham Quarry1302123 · Active6/8 quarters reportedMadison, IASurface · MSHA: Crushed, Broken Limestone NEC035,4547143.5
East Alamance Quarry3102021 · Active6/8 quarters reportedAlamance, NCSurface · MSHA: Crushed, Broken Limestone NEC023,7668155.8
Edgefield Quarry3800738 · Active6/8 quarters reportedEdgefield, SCSurface · MSHA: Crushed, Broken Granite048,4354152.5
ELIZABETHTON QUARRY4003075 · Active6/8 quarters reportedCarter, TNSurface · MSHA: Crushed, Broken Stone NEC018,0411040.0
E-Town S&G - 4603304279 · Active6/8 quarters reportedHamilton, OHSurface · MSHA: Construction Sand and Gravel013,7032175.0
Eudora Quarry1401609 · Active6/8 quarters reportedDouglas, KSSurface · MSHA: Crushed, Broken Limestone NEC032,8835024.0
FAIRFIELD GRAVEL3301396 · Active6/8 quarters reportedButler, OHSurface · MSHA: Construction Sand and Gravel039,14440122.0
Fast Pack 2 Portable 22302403 · Active6/8 quarters reportedJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC061,9810051.0
Ferguson Quarry1300124 · Active6/8 quarters reportedMarshall, IASurface · MSHA: Crushed, Broken Limestone NEC023,1683036.8
Forks of the River Quarry4001610 · Active6/8 quarters reportedKnox, TNSurface · MSHA: Crushed, Broken Limestone NEC056,98651111.5
Fort Calhoun Underground Mine2501300 · Active6/8 quarters reportedWashington, NEUnderground · MSHA: Crushed, Broken Limestone NEC0289,271374378.0
Fort Dodge Mine1300032 · Active6/8 quarters reportedWebster, IAUnderground · MSHA: Crushed, Broken Limestone NEC0154,301192293.0
Fort Myers Quarry0801203 · Active6/8 quarters reportedLee, FLSurface · MSHA: Crushed, Broken Limestone NEC0157,701122114.0
Fountain Quarry3100065 · Active6/8 quarters reportedPitt, NCSurface · MSHA: Crushed, Broken Granite099,6847082.3
FRANKLIN QUARRY3102130 · Active6/8 quarters reportedFranklin, NCSurface · MSHA: Crushed, Broken Granite023,7401026.8
FREDERICK QUARRY1800013 · Active6/8 quarters reportedFrederick, MDSurface · MSHA: Crushed, Broken Limestone NEC065,6800154.5
Fuquay Quarry3102055 · Active6/8 quarters reportedWake, NCSurface · MSHA: Crushed, Broken Stone NEC046,4763131.5
Garfield Sand & Gravel4103909 · Active6/8 quarters reportedTravis, TXSurface · MSHA: Construction Sand and Gravel027,0656027.0
Garner Quarry3100072 · Active6/8 quarters reportedWake, NCSurface · MSHA: Crushed, Broken Granite0103,7731169.3
GARWOOD PLANT4102886 · Active6/8 quarters reportedColorado, TXSurface · MSHA: Construction Sand and Gravel0109,1086148.5
Georgetown II Quarry3800525 · Active6/8 quarters reportedBerkeley, SCSurface · MSHA: Crushed, Broken Limestone NEC054,3336054.3
Gilliam Quarry2300083 · Active6/8 quarters reportedSaline, MOSurface · MSHA: Crushed, Broken Limestone NEC08,2585021.8

Production and hours sum available quarterly reports. — means unavailable; zero safety records means none in the selected imported period. Ownership reflects the current MSHA record.

LOCATION

Portfolio map

271 of 271 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies to production, safety and portfolio metrics. Silica samples have separate filters.

2025 Q1 – 2026 Q4

JSONCSV

Database snapshot · 2026-10-18. All 271 mines listed under this controller were checked; 270 have reports in the available quarters. Totals use current ownership.

Coal production

0

reported short tons

  1. 2025 Q1 *0
  2. 2025 Q2 *0
  3. 2025 Q3 *0
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Hours worked

17,729,523

reported employee hours

  1. 2025 Q1 *2,866,116
  2. 2025 Q2 *3,292,048
  3. 2025 Q3 *2,718,628
  4. 2025 Q42,787,695
  5. 2026 Q12,821,424
  6. 2026 Q23,243,612
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Tons per hour

0.00

production ÷ hours worked

  1. 2025 Q1 *0.00
  2. 2025 Q2 *0.00
  3. 2025 Q3 *0.00
  4. 2025 Q40.00
  5. 2026 Q10.00
  6. 2026 Q20.00
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.

Quarterly data and reporting coverage
Quarterly production, employment and reporting coverage for Martin Marietta Materials Inc
QuarterCoal (short tons)Hours workedTons / hourAvg. employeesCoverage
2025 Q102,866,1160.005,365269/270 mines reporting
2025 Q203,292,0480.005,576269/270 mines reporting
2025 Q302,718,6280.005,707269/270 mines reporting
2025 Q402,787,6950.005,640270/270 mines reporting
2026 Q102,821,4240.005,647270/270 mines reporting
2026 Q203,243,6120.005,670270/270 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-18

Violations

1,710

181 significant & substantial (S&S)

  1. 2025 Q1243
  2. 2025 Q2286
  3. 2025 Q3174
  4. 2025 Q4223
  5. 2026 Q1252
  6. 2026 Q2245
  7. 2026 Q3245
  8. 2026 Q4 *42

Accident records

159

1 records classified as fatality

  1. 2025 Q127
  2. 2025 Q223
  3. 2025 Q326
  4. 2025 Q415
  5. 2026 Q126
  6. 2026 Q218
  7. 2026 Q324
  8. 2026 Q4 *0

Proposed penalties · USD

487,246.00

1,534 of 1,710 violations with amounts

  1. 2025 Q195,099
  2. 2025 Q277,976
  3. 2025 Q355,868
  4. 2025 Q488,665
  5. 2026 Q193,131
  6. 2026 Q247,131
  7. 2026 Q329,376
  8. 2026 Q4 *—

On-site inspection hours

18,902.50

1,356 inspections · 1,356 with hours

  1. 2025 Q12,356.00
  2. 2025 Q22,985.50
  3. 2025 Q32,621.75
  4. 2025 Q42,543.75
  5. 2026 Q12,787.00
  6. 2026 Q22,997.00
  7. 2026 Q32,321.25
  8. 2026 Q4 *290.25

Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.

Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q12432695,099.002711842,356.0
2025-Q22861877,976.002302012,985.5
2025-Q31741755,868.002601962,621.8
2025-Q42232788,665.001501692,543.8
2026-Q12523393,131.002602092,787.0
2026-Q22451647,131.001802012,997.0
2026-Q32453829,376.002401662,321.3
2026-Q4 *426—0030290.3

Most cited CFR sections

All violations issued in the selected period. Counts combine subsections.

SectionViolationsS&S
30 CFR 56.14100Safety defects; examination, correction and records.13120
30 CFR 56.12004Electrical conductors.1104
30 CFR 56.20003Housekeeping.10415
30 CFR 56.14107Moving machine parts.827
30 CFR 56.14112Construction and maintenance of guards.666
30 CFR 56.4201Inspection.570
30 CFR 50.30Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.530
30 CFR 56.12032Inspection and cover plates.521
30 CFR 56.14132Horns and backup alarms.513
30 CFR 56.14207Parking procedures for unattended equipment.442

Safety activity

  1. violation5040199
    Ottawa Quarry · 1401590

    56.14100(b) · $151.00 proposed

  2. violation5063232
    CAYCE QUARRY · 3800016

    56.4201(a)(2) · $165.00 proposed

  3. inspectionF020DE5
    AUBURN QUARRY · 0900436

    Regular Safety and Health Inspection · 17.5 on-site hours

  4. inspectionF015C4F
    Ottawa Quarry · 1401590

    Regular Safety and Health Inspection · 12.0 on-site hours

  5. inspectionF02ADE6
    CAYCE QUARRY · 3800016

    Regular Safety and Health Inspection · 28.8 on-site hours

  6. violation5061706
    CAYCE QUARRY · 3800016

    56.14112(b) · $288.00 proposed

  7. violation5061705
    CAYCE QUARRY · 3800016

    56.20011 · $642.00 proposed

  8. violation5061704
    CAYCE QUARRY · 3800016

    56.14112(b) · $288.00 proposed

  9. inspectionF0190F4
    Maylene Plant & Quarry · 0100634

    Compliance Follow-up Inspection · 1.0 on-site hours

  10. inspectionF0156FF
    Kokomo Mine · 1202105

    Regular Safety and Health Inspection · 11.5 on-site hours

  11. inspectionF02964E
    Cedar Rapids Quarry · 1300122

    Regular Safety and Health Inspection · 8.0 on-site hours

  12. violation9708929
    O'Neal Quarry & Mill · 0100003

    56.12030 · $151.00 proposed

  13. violation9708928
    O'Neal Quarry & Mill · 0100003

    56.13021 · S&S · $592.00 proposed

  14. accident220252240015
    Hartford Quarry · 1500095

    POWERED HAULAGE · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    While operating the Caterpillar 988H loader joystick shifter and engaging the gear selection buttons the employee sustained a strained tendon at the base of left thumb in palm area.

  15. accident220252190011
    Champ Quarry · 2300220

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Employee was attempting to remove a carrier roller from an Excavator undercarriage. While doing so they used a hammer to the knock the roller free from its housing. In doing so a small piece of steel splintered away from the roller and struck the employee in the sternum and embedded below the skin.

  16. accident220252200012
    Martin Marietta - Woodville Lime & Stone · 3300156

    SLIP OR FALL OF PERSON · DYS AWY FRM WRK & RESTRCTD ACT

    Accident narrative

    (Illness) Employee was standing and passed out, fell to the ground, and received a cut on EE's head from the ground. (total time passed out was less than a minute). EE was taken to the hospital, received 3 stitches to close the cut along with IV's. EE was then released, told to stay home one day, permitted by the doctor to drive self home. EE has been working since then.

  17. inspectionF016FC0
    Irwindale Aggregates · 0401838

    Regular Safety and Health Inspection · 13.0 on-site hours

  18. inspectionF01577A
    Calhoun Sand · 3800716

    Regular Safety and Health Inspection · 15.0 on-site hours

  19. violation5166413
    Irwindale Aggregates · 0401838

    56.14107(a) · $151.00 proposed

  20. inspectionF015C4B
    Eudora Quarry · 1401609

    Regular Safety and Health Inspection · 3.8 on-site hours

  21. inspectionF01E6C7
    North Columbia Quarry · 3800146

    Regular Safety and Health Inspection · 27.0 on-site hours

  22. inspectionF01CAB4
    Granite Canyon Quarry · 4800018

    Verbal Hazard Complaint Inspections · 8.0 on-site hours

  23. violation5113267
    Ferguson Quarry · 1300124

    46.9(c)(3) · $151.00 proposed

  24. violation5040195
    Sunflower Quarry · 1401556

    46.9(b)(5) · $151.00 proposed

  25. violation9756800
    North Columbia Quarry · 3800146

    50.30(a) · $151.00 proposed

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.

Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.

Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.

S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.

Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.

Portfolio totals use current mine membership, including events before the current owner or operator's tenure.

CFR headings link to the current Title 30 index; they are not historical legal determinations.

Coal shipments and quality

EIA source checks are overdue. Refresh receipts before serving this report.

Coal prices and estimated revenue

Annual coal-price source checks are overdue. Refresh before serving estimates.

SELECTED PORTFOLIO

14 linked operators.

Relationships reflect the selected mine status and current MSHA controller/operator fields.

OPERATOR / 0084984Martin Marietta Materials Southwest LLC23 selected mines →OPERATOR / 0200133Martin Marietta Southeast Agg Operations, LLC15 selected mines →OPERATOR / L16197Martin Marietta Materials Inc187 selected mines →OPERATOR / 0113025Bluegrass Materials Company, LLC19 selected mines →OPERATOR / L18213Meridian Aggregates Company LP4 selected mines →OPERATOR / 0064607Martin Marietta Northern California Aggregates,LLC8 selected mines →OPERATOR / 0187053Martin Marietta Arizona, LLC2 selected mines →OPERATOR / L17823Martin Marietta Southern California Aggregates,LLC3 selected mines →OPERATOR / L06176Barton Sand & Gravel Co1 selected mine →OPERATOR / 0179693Martin Marietta San Diego Aggregates, LLC2 selected mines →OPERATOR / 0200713Martin Marietta ALTN Aggregates, Inc.3 selected mines →OPERATOR / L07042Palmetto Sand Co., Inc.1 selected mine →OPERATOR / 0057618Martin Marietta Kansas City, LLC2 selected mines →OPERATOR / L36376Mission Valley Rock, LLC1 selected mine →