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U.S. MINING ENTITIES / CONTROLLER / M07897

ACTIVE / CONTROLLER PORTFOLIO

Taiheiyo Cement Corp

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

MSHA CONTROLLER IDM07897

MINE PORTFOLIO

25 of 25 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
AGUA FRIA PIT0202181 · Active6/8 quarters reportedSanta Cruz, AZSurface · MSHA: Construction Sand and Gravel018,7122010.3
Bluelake DBA CalPortland3503537 · Active6/8 quarters reportedMultnomah, ORSurface · MSHA: Crushed, Broken Stone NEC08,6081019.0
Canby Sand & Gravel DBA CalPortland3500497 · Active6/8 quarters reportedClackamas, ORSurface · MSHA: Crushed, Broken Stone NEC037,0407145.3
Diablo Plant # 1360203350 · Active6/8 quarters reportedPinal, AZSurface · MSHA: Construction Sand and Gravel035,6639038.0
Dupont Pit4503334 · Active6/8 quarters reportedPierce, WASurface · MSHA: Construction Sand and Gravel0156,39218296.3
GAREY ROCK PLANT0403031 · Active6/8 quarters reportedSanta Barbara, CASurface · MSHA: Construction Sand and Gravel069,6165247.0
Grimes Rock a CalPortland Company0405432 · Active6/8 quarters reportedVentura, CASurface · MSHA: Construction Sand and Gravel0103,30518345.5
Jackrabbit Aggregates0203407 · Active6/8 quarters reportedMaricopa, AZSurface · MSHA: Construction Sand and Gravel050,6404122.8
Lake View Quarry2602386 · Active6/8 quarters reportedClark, NVSurface · MSHA: Gypsum033,4413019.0
Mojave Plant & Quarry0400036 · Active6/8 quarters reportedKern, CAFacility · MSHA: Cement0511,407896391.8
New River Plant0203367 · Active6/8 quarters reportedMaricopa, AZSurface · MSHA: Construction Sand and Gravel045,2497020.0
ORANGE GROVE0201203 · Active6/8 quarters reportedPima, AZSurface · MSHA: Construction Sand and Gravel046,8800027.0
ORO GRANDE QUARRY0400011 · Active6/8 quarters reportedSan Bernardino, CAFacility · MSHA: Cement0485,226718340.5
Redding Plant0400034 · Active6/8 quarters reportedShasta, CASurface · MSHA: Cement0304,690495139.0
RILLITO PLANT0201138 · Active6/8 quarters reportedPima, AZFacility · MSHA: Cement0402,626479148.0
RILLITO QUARRY0200006 · Active6/8 quarters reportedPima, AZSurface · MSHA: Crushed, Broken Stone NEC056,7060013.8
Rocky Canyon Plant0404634 · Active6/8 quarters reportedSan Luis Obispo, CASurface · MSHA: Crushed, Broken Granite036,0282333.0
Sanderling Dredge4503687 · Active6/8 quarters reportedColumbia, ORSurface · MSHA: Sand, Industrial NEC017,2351122.0
Santosh DBA CalPortland3500525 · Active6/8 quarters reportedColumbia, ORSurface · MSHA: Construction Sand and Gravel0190,5949577.5
Scheerer Quarry0405907 · Active6/8 quarters reportedSan Bernardino, CASurface · MSHA: Sand, Common072,7413032.0
Smokey Point Pit4500574 · Active6/8 quarters reportedSnohomish, WASurface · MSHA: Construction Sand and Gravel019,7617121.8
Snoqualmie S&G dba CalPortland Company4503136 · Active6/8 quarters reportedKing, WASurface · MSHA: Construction Sand and Gravel060,334542105.0
Twin Peaks Aggregate0202283 · Active6/8 quarters reportedPima, AZSurface · MSHA: Construction Sand and Gravel025,5881014.5
VASHON SAND AND GRAVEL dba CalPortland4501707 · Active6/8 quarters reportedKing, WASurface · MSHA: Construction Sand and Gravel011,0127119.8
White River Quarry4503374 · Active6/8 quarters reportedKing, WASurface · MSHA: Crushed, Broken Stone NEC019,1987042.5

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

25 of 25 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 25 mines listed under this controller were checked; 25 have reports in the available quarters. Totals use current ownership.

Coal production

0

reported short tons

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q30
  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

2,818,692

reported employee hours

  1. 2025 Q1520,984
  2. 2025 Q2467,645
  3. 2025 Q3470,923
  4. 2025 Q4460,764
  5. 2026 Q1461,525
  6. 2026 Q2436,851
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Tons per hour

0.00

production ÷ hours worked

  1. 2025 Q10.00
  2. 2025 Q20.00
  3. 2025 Q30.00
  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 Taiheiyo Cement Corp
QuarterCoal (short tons)Hours workedTons / hourAvg. employeesCoverage
2025 Q10520,9840.0085025/25 mines reporting
2025 Q20467,6450.0090725/25 mines reporting
2025 Q30470,9230.0089125/25 mines reporting
2025 Q40460,7640.0088425/25 mines reporting
2026 Q10461,5250.0089025/25 mines reporting
2026 Q20436,8510.0084625/25 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-18

Violations

421

79 significant & substantial (S&S)

  1. 2025 Q190
  2. 2025 Q262
  3. 2025 Q330
  4. 2025 Q480
  5. 2026 Q152
  6. 2026 Q266
  7. 2026 Q341
  8. 2026 Q4 *0

Accident records

50

0 records classified as fatality

  1. 2025 Q18
  2. 2025 Q27
  3. 2025 Q35
  4. 2025 Q43
  5. 2026 Q17
  6. 2026 Q29
  7. 2026 Q311
  8. 2026 Q4 *0

Proposed penalties · USD

267,310.00

418 of 421 violations with amounts

  1. 2025 Q130,259
  2. 2025 Q248,442
  3. 2025 Q35,988
  4. 2025 Q4111,096
  5. 2026 Q114,920
  6. 2026 Q229,781
  7. 2026 Q326,824
  8. 2026 Q4 *—

On-site inspection hours

1,791.00

126 inspections · 126 with hours

  1. 2025 Q1331.25
  2. 2025 Q2265.75
  3. 2025 Q3195.25
  4. 2025 Q4329.75
  5. 2026 Q1195.75
  6. 2026 Q2284.25
  7. 2026 Q3189.00
  8. 2026 Q4 *—

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-Q1901830,259.008021331.3
2025-Q2621548,442.007019265.8
2025-Q33045,988.005014195.3
2025-Q48022111,096.003017329.8
2026-Q152314,920.007021195.8
2026-Q2661429,781.009011284.3
2026-Q341326,824.0011023189.0
2026-Q4 *00—000—

Most cited CFR sections

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

SectionViolationsS&S
30 CFR 56.20003Housekeeping.4930
30 CFR 56.12004Electrical conductors.301
30 CFR 56.14112Construction and maintenance of guards.232
30 CFR 50.30Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.200
30 CFR 56.14100Safety defects; examination, correction and records.205
30 CFR 56.12032Inspection and cover plates.161
30 CFR 56.12028Testing grounding systems.131
30 CFR 56.14107Moving machine parts.132
30 CFR 56.4201Inspection.121
30 CFR 47.41Requirement for container labels.110

Safety activity

  1. violation5106133
    Redding Plant · 0400034

    56.17001 · $151.00 proposed

  2. violation5106132
    Redding Plant · 0400034

    56.17001 · $151.00 proposed

  3. violation5102606
    Redding Plant · 0400034

    56.15001 · $209.00 proposed

  4. violation5102605
    Redding Plant · 0400034

    56.12004 · $209.00 proposed

  5. violation5102604
    Redding Plant · 0400034

    56.16001 · $209.00 proposed

  6. violation9680881
    Redding Plant · 0400034

    47.41(a) · $151.00 proposed

  7. violation9680880
    Redding Plant · 0400034

    47.41(a) · $151.00 proposed

  8. violation9680879
    Redding Plant · 0400034

    56.16003 · $151.00 proposed

  9. violation5106130
    Redding Plant · 0400034

    56.16007(a) · S&S · $366.00 proposed

  10. violation5106129
    Redding Plant · 0400034

    45.4(b) · $151.00 proposed

  11. violation5106128
    Redding Plant · 0400034

    56.11001 · $151.00 proposed

  12. violation5102603
    Redding Plant · 0400034

    56.16006 · $1,126.00 proposed

  13. inspectionF039815
    Redding Plant · 0400034

    Regular Safety and Health Inspection · 54.3 on-site hours

  14. accident220260130016
    Grimes Rock a CalPortland Company · 0405432

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Employee was removing screens from shaker for cleaning when one of the screens caught the harness they were wearing causing them to fall and hurt a knee.

  15. violation5100502
    Santosh DBA CalPortland · 3500525

    56.12008 · $267.00 proposed

  16. inspectionF038461
    Santosh DBA CalPortland · 3500525

    Regular Safety and Health Inspection · 26.5 on-site hours

  17. violation9890492
    Mojave Plant & Quarry · 0400036

    56.20009 · S&S · $23,525.00 proposed

  18. inspectionF014E73
    GAREY ROCK PLANT · 0403031

    Regular Safety and Health Inspection · 13.5 on-site hours

  19. violation5166201
    Mojave Plant & Quarry · 0400036

    56.12018 · $209.00 proposed

  20. violation5165543
    Mojave Plant & Quarry · 0400036

    56.12004 · $151.00 proposed

  21. violation5165542
    Mojave Plant & Quarry · 0400036

    56.20003(a) · S&S · $697.00 proposed

  22. violation9890487
    Mojave Plant & Quarry · 0400036

    56.4104(b) · $151.00 proposed

  23. violation5166528
    Mojave Plant & Quarry · 0400036

    50.30(a) · $151.00 proposed

  24. violation5166527
    Mojave Plant & Quarry · 0400036

    50.30(a) · $151.00 proposed

  25. violation5166526
    Mojave Plant & Quarry · 0400036

    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.

SELECTED PORTFOLIO

2 linked operators.

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

OPERATOR / L11900CalPortland Company24 selected mines →OPERATOR / 0132473Smokey Point Concrete1 selected mine →