ACTIVE / OPERATOR PORTFOLIO

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

24 of 24 mines and facilities

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

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
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

LOCATION

Portfolio map

24 of 24 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.

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

1,769.25

123 inspections · 123 with hours

  1. 2025 Q1331.25
  2. 2025 Q2258.25
  3. 2025 Q3195.25
  4. 2025 Q4329.75
  5. 2026 Q1189.50
  6. 2026 Q2276.25
  7. 2026 Q3189.00
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q1901830,259.008021331.3
2025-Q2611548,291.007018258.3
2025-Q33045,988.005014195.3
2025-Q48022111,096.003017329.8
2026-Q150314,618.007020189.5
2026-Q2621429,177.008010276.3
2026-Q341326,824.0011023189.0
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. violation9892774
    Mojave Plant & Quarry · 0400036

    56.14107(a) · $151.00 proposed

  2. violation9892773
    Mojave Plant & Quarry · 0400036

    56.14107(a) · S&S · $883.00 proposed

  3. accident220251190004
    Mojave Plant & Quarry · 0400036

    IGNITION OR EXPLOSION OF GAS OR DUST · ACCIDENT ONLY

    Accident narrative

    PCS received a displaced rupture disk alarm in Forney indicating an explosion in the Coal Mill 1 system. The investigative process is continuing at this time to identify the root cause. All CM1 Recovery Phase work will be performed safely and methodically.

  4. accident220251120005
    Santosh DBA CalPortland · 3500525

    FALLING/SLIDING/ROLLING MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    a miner was struck by a large rock on their hard hat and face

  5. inspectionF0248EE
    Redding Plant · 0400034

    Compliance Follow-up Inspection · 0.0 on-site hours

  6. accident220250990020
    RILLITO PLANT · 0201138

    HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employees were on the ground laying a spreader bar down to begin break and as it was laying down EE had hand on the underside as opposed to on top and EE's first instinct was to push it and it pinched EE's hand between the spreader bar and saw horse smashing three fingers.

  7. violation5102021
    Redding Plant · 0400034

    50.30(a) · $151.00 proposed

  8. violation5102013
    Redding Plant · 0400034

    46.9(b)(2) · $151.00 proposed

  9. violation5102012
    Redding Plant · 0400034

    50.11(b) · $151.00 proposed

  10. violation5102011
    Redding Plant · 0400034

    46.8(a)(2) · $168.00 proposed

  11. violation5102010
    Redding Plant · 0400034

    46.5 · $233.00 proposed

  12. violation5102009
    Redding Plant · 0400034

    46.9(g) · $151.00 proposed

  13. violation5102008
    Redding Plant · 0400034

    56.14115(b) · $226.00 proposed

  14. violation5102007
    Redding Plant · 0400034

    56.11004 · S&S · $5,574.00 proposed

  15. inspectionF01117A
    Redding Plant · 0400034

    Regular Safety and Health Inspection · 20.5 on-site hours

  16. violation9892901
    Grimes Rock a CalPortland Company · 0405432

    56.14130(g) · S&S · $267.00 proposed

  17. violation9892900
    Grimes Rock a CalPortland Company · 0405432

    56.14100(a) · $151.00 proposed

  18. accident220250990009
    Redding Plant · 0400034

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

    Accident narrative

    Employee was attempting to hang hoses onto wall racks when the base of ladder slipped out from under EE. This resulted in employee falling from a height of 12' causing a broken femur and broken hand all on the left side of body. EMS was called to transport to hospital.

  19. inspectionF0156B1
    Grimes Rock a CalPortland Company · 0405432

    Regular Safety and Health Inspection · 7.0 on-site hours

  20. accident220250840017
    ORO GRANDE QUARRY · 0400011

    HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    The employee was removing a rock from the grizzly head pulley at the 551BC101 conveyor belt when another rock fell and smashed employee's left index finger.

  21. inspection6943394
    Twin Peaks Aggregate · 0202283

    Regular Safety and Health Inspection · 7.0 on-site hours

  22. violation5052313
    Twin Peaks Aggregate · 0202283

    56.11003 · $151.00 proposed

  23. inspectionF0159F7
    Snoqualmie S&G dba CalPortland Company · 4503136

    Compliance Follow-up Inspection · 1.5 on-site hours

  24. inspectionF00CC6E
    Diablo Plant # 136 · 0203350

    Regular Safety and Health Inspection · 5.3 on-site hours

  25. violation5052301
    RILLITO PLANT · 0201138

    47.41(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

1 linked controller.

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