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U.S. MINING ENTITIES / OPERATOR / L16197

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Martin Marietta Materials Inc

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

MSHA OPERATOR IDL16197

MINE PORTFOLIO

317 of 317 mines and facilities

2025-01-01 – 2026-10-18. All statuses 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
R&S Sand & Gravel2200381 · AbandonedItawamba, MSSurface · MSHA: Construction Sand and Gravel——00—
Salisbury Shop3101235 · AbandonedRowan, NCFacility · MSHA: Crushed, Broken Granite——00—
Shorter Plant0102852 · AbandonedMacon, ALSurface · MSHA: Construction Sand and Gravel——00—
Siler City Quarry3100044 · AbandonedChatham, NCSurface · MSHA: Crushed, Broken Granite——00—
Sokol Pit0504977 · AbandonedEl Paso, COSurface · MSHA: Gypsum——00—
Springfield Quarry2501103 · AbandonedSarpy, NESurface · MSHA: Crushed, Broken Limestone NEC——00—
Sturgeon Quarry2302099 · Abandoned1/8 quarters reportedBoone, MOSurface · MSHA: Crushed, Broken Limestone NEC0269001.5
Sylacauga Plant0103187 · AbandonedTalladega, ALSurface · MSHA: Crushed, Broken Marble——00—
Tenmile Plant & Quarry1001874 · AbandonedCaribou, IDSurface · MSHA: Lime——00—
Tipton Quarry2301586 · Abandoned5/8 quarters reportedCooper, MOSurface · MSHA: Crushed, Broken Limestone NEC03,070007.8
Waterloo Sand2501314 · Abandoned2/8 quarters reportedDouglas, NESurface · MSHA: Sand, Industrial NEC0000—
Waugh Plant0100714 · AbandonedMontgomery, ALSurface · MSHA: Construction Sand and Gravel——00—
Westphalia Quarry2301908 · AbandonedOsage, MOSurface · MSHA: Crushed, Broken Limestone NEC——00—
Wickenburg #100202233 · AbandonedMaricopa, AZSurface · MSHA: Construction Sand and Gravel——00—
Willis Portable3401949 · AbandonedJohnston, OKSurface · MSHA: Crushed, Broken Limestone NEC——00—
Wilmington Sand3101308 · AbandonedNew Hanover, NCSurface · MSHA: Construction Sand and Gravel——00—
WOODBINE QUARRY #3831400085 · AbandonedMarion, KSSurface · MSHA: Crushed, Broken Limestone NEC——00—

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

305 of 317 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 317 mines listed under this operator were checked; 234 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 Q4 *0
  5. 2026 Q1 *0
  6. 2026 Q2 *0
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Hours worked

13,144,310

reported employee hours

  1. 2025 Q1 *2,096,050
  2. 2025 Q2 *2,450,398
  3. 2025 Q3 *2,074,622
  4. 2025 Q4 *2,066,282
  5. 2026 Q1 *2,008,020
  6. 2026 Q2 *2,448,938
  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 Q4 *0.00
  5. 2026 Q1 *0.00
  6. 2026 Q2 *0.00
  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 Q102,096,0500.003,992230/234 mines reporting
2025 Q202,450,3980.004,235229/234 mines reporting
2025 Q302,074,6220.004,299227/234 mines reporting
2025 Q402,066,2820.004,214228/234 mines reporting
2026 Q102,008,0200.004,218227/234 mines reporting
2026 Q202,448,9380.004,314224/234 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-18

Violations

1,349

164 significant & substantial (S&S)

  1. 2025 Q1178
  2. 2025 Q2209
  3. 2025 Q3147
  4. 2025 Q4139
  5. 2026 Q1231
  6. 2026 Q2220
  7. 2026 Q3194
  8. 2026 Q4 *31

Accident records

131

1 records classified as fatality

  1. 2025 Q126
  2. 2025 Q219
  3. 2025 Q318
  4. 2025 Q49
  5. 2026 Q123
  6. 2026 Q216
  7. 2026 Q320
  8. 2026 Q4 *0

Proposed penalties · USD

416,272.00

1,201 of 1,349 violations with amounts

  1. 2025 Q166,990
  2. 2025 Q265,028
  3. 2025 Q351,307
  4. 2025 Q466,607
  5. 2026 Q188,778
  6. 2026 Q254,371
  7. 2026 Q323,191
  8. 2026 Q4 *—

On-site inspection hours

14,771.25

1,041 inspections · 1,041 with hours

  1. 2025 Q11,855.50
  2. 2025 Q22,345.75
  3. 2025 Q32,047.75
  4. 2025 Q41,780.25
  5. 2026 Q12,303.00
  6. 2026 Q22,385.50
  7. 2026 Q31,863.50
  8. 2026 Q4 *190.00

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-Q11782166,990.002611441,855.5
2025-Q22091465,028.001901512,345.8
2025-Q31471651,307.001801522,047.8
2025-Q41391766,607.00901161,780.3
2026-Q12313188,778.002301692,303.0
2026-Q22202454,371.001601552,385.5
2026-Q31943523,191.002001351,863.5
2026-Q4 *316—0019190.0

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.9916
30 CFR 56.12004Electrical conductors.904
30 CFR 56.20003Housekeeping.7413
30 CFR 56.14107Moving machine parts.594
30 CFR 56.14112Construction and maintenance of guards.505
30 CFR 56.4201Inspection.450
30 CFR 56.12032Inspection and cover plates.431
30 CFR 56.14207Parking procedures for unattended equipment.382
30 CFR 56.14132Horns and backup alarms.352
30 CFR 50.30Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.330

Safety activity

  1. inspectionF0337E7
    Carmel Sand & Gravel · 1202124

    Regular Safety and Health Inspection · 0.0 on-site hours

  2. violation5010026
    Waverly Sand & Gravel · 1202038

    62.170

  3. violation5010025
    Carmel Sand & Gravel · 1202124

    56.14132(a) · S&S

  4. inspectionF0510F5
    Snyder · 3401651

    Regular Safety and Health Inspection · 0.0 on-site hours

  5. violation5220394
    Lotawana Quarry · 2301889

    56.14207

  6. violation5175553
    Snyder · 3401651

    56.12004

  7. violation5175552
    Snyder · 3401651

    56.14100(b)

  8. inspectionF04D404
    Alden Portable Sand · 1302037

    Regular Safety and Health Inspection · 4.3 on-site hours

  9. inspectionF04A044
    Lotawana Quarry · 2301889

    Regular Safety and Health Inspection · 0.0 on-site hours

  10. inspectionF044BD0
    Chattanooga Quarry · 4003159

    Regular Safety and Health Inspection · 0.0 on-site hours

  11. violation5114796
    Alden Portable Sand · 1302037

    56.12008

  12. violation5220393
    Lotawana Quarry · 2301889

    56.14100(b)

  13. violation5220392
    Lotawana Quarry · 2301889

    56.14112(b)

  14. inspectionF04D403
    DSM Portable Sand · 1302504

    Regular Safety and Health Inspection · 3.5 on-site hours

  15. inspectionF03C4F2
    Olathe Quarry · 1401704

    Regular Safety and Health Inspection · 8.5 on-site hours

  16. violation5114795
    DSM Portable Sand · 1302504

    56.12028

  17. violation5211729
    Olathe Quarry · 1401704

    56.14100(a)

  18. violation5211728
    Olathe Quarry · 1401704

    56.14101(a)(2)

  19. violation5211727
    Olathe Quarry · 1401704

    56.14207

  20. violation5211726
    Olathe Quarry · 1401704

    56.12028 · S&S

  21. violation5211725
    Olathe Quarry · 1401704

    56.14107(a)

  22. violation5211724
    Olathe Quarry · 1401704

    56.4201(a)(2)

  23. violation5211723
    Olathe Quarry · 1401704

    56.11002 · S&S

  24. violation5211722
    Olathe Quarry · 1401704

    56.12008

  25. violation5211721
    Olathe Quarry · 1401704

    56.14132(b)(2)

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.

SELECTED PORTFOLIO

1 linked controller.

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

CONTROLLER / M00174Martin Marietta Materials Inc317 selected mines →