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U.S. MINING ENTITIES / OPERATOR / L11900

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CalPortland Company

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

MSHA OPERATOR IDL11900

MINE PORTFOLIO

42 of 42 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
AGUA FRIA PIT0202181 · Active6/8 quarters reportedSanta Cruz, AZSurface · MSHA: Construction Sand and Gravel018,7122010.3
Baxter Mine0403569 · Intermittent6/8 quarters reportedSan Bernardino, CASurface · MSHA: Iron Ore015,505005.8
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
Gem Hill Mine Site0405976 · Intermittent5/8 quarters reportedKern, CASurface · MSHA: Cement03,287009.0
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
Paso Robles Plant0405492 · Intermittent6/8 quarters reportedSan Luis Obispo, CASurface · MSHA: Construction Sand and Gravel08880010.3
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
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
Anamax0201811 · AbandonedPima, AZSurface · MSHA: Crushed, Broken Limestone NEC——00—
Bradley Plant0405572 · AbandonedMonterey, CASurface · MSHA: Construction Sand and Gravel——00—
Bullard0203082 · AbandonedMaricopa, AZSurface · MSHA: Construction Sand and Gravel——00—
Colton Aggregates0405677 · AbandonedSan Bernardino, CASurface · MSHA: Sand, Industrial NEC——00—
Colton Plant & Quarry0400037 · AbandonedSan Bernardino, CASurface · MSHA: Cement——00—
Construx Aggregates2602322 · AbandonedClark, NVSurface · MSHA: Construction Sand and Gravel——00—
Coolidge Plant 40203081 · AbandonedPinal, AZSurface · MSHA: Construction Sand and Gravel——00—
Empire Mountain Quarry0203447 · Temporarily IdledPima, AZSurface · MSHA: Construction Sand and Gravel——00—
Linnton DBA CalPortland3503475 · AbandonedMultnomah, ORSurface · MSHA: Construction Sand and Gravel——00—
Liston0400557 · AbandonedRiverside, CASurface · MSHA: Common Clays NEC——00—
Maury Island Sand & Grav dba CalPortland4502526 · AbandonedKing, WASurface · MSHA: Construction Sand and Gravel——00—
Oro Grande Aggregates0405906 · AbandonedSan Bernardino, CASurface · MSHA: Construction Sand and Gravel——00—
PANTANO0201608 · AbandonedPima, AZSurface · MSHA: Crushed, Broken Stone NEC——00—
Port of Vancouver DBA CalPortland4503285 · AbandonedClark, WASurface · MSHA: Construction Sand and Gravel——00—
Superior0403570 · AbandonedSan Bernardino, CASurface · MSHA: Construction Sand and Gravel——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

40 of 42 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 42 mines listed under this operator were checked; 27 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 Q1 *0
  6. 2026 Q20
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Hours worked

2,818,611

reported employee hours

  1. 2025 Q1521,544
  2. 2025 Q2466,872
  3. 2025 Q3471,048
  4. 2025 Q4460,373
  5. 2026 Q1 *461,692
  6. 2026 Q2437,082
  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 Q1 *0.00
  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 CalPortland Company
QuarterCoal (short tons)Hours workedTons / hourAvg. employeesCoverage
2025 Q10521,5440.0085627/27 mines reporting
2025 Q20466,8720.0090827/27 mines reporting
2025 Q30471,0480.0089127/27 mines reporting
2025 Q40460,3730.0088527/27 mines reporting
2026 Q10461,6920.0089126/27 mines reporting
2026 Q20437,0820.0085327/27 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-18

Violations

414

79 significant & substantial (S&S)

  1. 2025 Q190
  2. 2025 Q261
  3. 2025 Q330
  4. 2025 Q480
  5. 2026 Q150
  6. 2026 Q262
  7. 2026 Q341
  8. 2026 Q4 *0

Accident records

49

0 records classified as fatality

  1. 2025 Q18
  2. 2025 Q27
  3. 2025 Q35
  4. 2025 Q43
  5. 2026 Q17
  6. 2026 Q28
  7. 2026 Q311
  8. 2026 Q4 *0

Proposed penalties · USD

266,253.00

411 of 414 violations with amounts

  1. 2025 Q130,259
  2. 2025 Q248,291
  3. 2025 Q35,988
  4. 2025 Q4111,096
  5. 2026 Q114,618
  6. 2026 Q229,177
  7. 2026 Q326,824
  8. 2026 Q4 *—

On-site inspection hours

1,794.25

129 inspections · 129 with hours

  1. 2025 Q1338.25
  2. 2025 Q2261.25
  3. 2025 Q3204.00
  4. 2025 Q4332.50
  5. 2026 Q1189.50
  6. 2026 Q2279.75
  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-Q1901830,259.008022338.3
2025-Q2611548,291.007019261.3
2025-Q33045,988.005015204.0
2025-Q48022111,096.003018332.5
2026-Q150314,618.007020189.5
2026-Q2621429,177.008012279.8
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.271
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.122
30 CFR 56.4201Inspection.121
30 CFR 47.41Requirement for container labels.110

Safety activity

  1. violation9509642
    Mojave Plant & Quarry · 0400036

    56.12032 · $151.00 proposed

  2. accident220250490050
    Redding Plant · 0400034

    HOISTING · ACCIDENT ONLY

    Accident narrative

    Contractor was painting an electrical box on 3rd floor of F Area. EE needed a paint brush, so EE entered the elevator going down. Contractor became lodged between floors, 911 was called and tech for elevator was called also. Contractor was retrieved from elevator without injury.

  3. inspectionF003D6A
    Mojave Plant & Quarry · 0400036

    Regular Safety and Health Inspection · 59.8 on-site hours

  4. violation9892528
    ORO GRANDE QUARRY · 0400011

    56.9300(b) · $165.00 proposed

  5. violation9892527
    ORO GRANDE QUARRY · 0400011

    47.44(b) · $151.00 proposed

  6. inspectionF0169F8
    Sanderling Dredge · 4503687

    Regular Safety and Health Inspection · 14.5 on-site hours

  7. violation9890437
    ORO GRANDE QUARRY · 0400011

    56.4603(c) · $151.00 proposed

  8. violation9890436
    ORO GRANDE QUARRY · 0400011

    56.12028 · $151.00 proposed

  9. violation9890435
    ORO GRANDE QUARRY · 0400011

    47.44(a)(2) · $151.00 proposed

  10. violation9890434
    ORO GRANDE QUARRY · 0400011

    56.17001 · $151.00 proposed

  11. violation9509641
    ORO GRANDE QUARRY · 0400011

    47.41(a) · $151.00 proposed

  12. violation9509640
    ORO GRANDE QUARRY · 0400011

    46.8(a)(2) · $168.00 proposed

  13. violation9509639
    ORO GRANDE QUARRY · 0400011

    56.12032 · $151.00 proposed

  14. violation8604194
    Sanderling Dredge · 4503687

    56.12028 · $151.00 proposed

  15. violation9892526
    ORO GRANDE QUARRY · 0400011

    56.12023 · $1,550.00 proposed

  16. violation9892525
    ORO GRANDE QUARRY · 0400011

    56.16001 · $465.00 proposed

  17. violation9892524
    ORO GRANDE QUARRY · 0400011

    56.14112(b) · $313.00 proposed

  18. violation9892523
    ORO GRANDE QUARRY · 0400011

    56.12002 · $1,550.00 proposed

  19. violation9509637
    ORO GRANDE QUARRY · 0400011

    56.4011 · $465.00 proposed

  20. violation9891985
    White River Quarry · 4503374

    56.12004 · $151.00 proposed

  21. inspectionF00BD56
    ORANGE GROVE · 0201203

    Regular Safety and Health Inspection · 9.5 on-site hours

  22. inspectionF004505
    ORO GRANDE QUARRY · 0400011

    Regular Safety and Health Inspection · 71.5 on-site hours

  23. inspectionF00FFD0
    White River Quarry · 4503374

    Regular Safety and Health Inspection · 4.5 on-site hours

  24. inspectionF01E1A6
    Canby Sand & Gravel DBA CalPortland · 3500497

    Regular Safety and Health Inspection · 10.8 on-site hours

  25. accident220250290019
    ORO GRANDE QUARRY · 0400011

    SLIP OR FALL OF PERSON · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    The employee was walking up the stairs on the front (west end) of the building and missed the top/last step. Employee fell face first and opened a 2" gash above right eye.

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 / M07897Taiheiyo Cement Corp42 selected mines →