Coal production
0reported short tons
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 – 2026-10-13. 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.
| Mine | Location / type | Coal · short tons | Hours worked | Violations | Accident records | On-site inspection hours |
|---|---|---|---|---|---|---|
| AGUA FRIA PIT0202181 · Active6/8 quarters reported | Santa Cruz, AZSurface · MSHA: Construction Sand and Gravel | 0 | 18,712 | 2 | 0 | 10.3 |
| Bluelake DBA CalPortland3503537 · Active6/8 quarters reported | Multnomah, ORSurface · MSHA: Crushed, Broken Stone NEC | 0 | 8,608 | 1 | 0 | 19.0 |
| Canby Sand & Gravel DBA CalPortland3500497 · Active6/8 quarters reported | Clackamas, ORSurface · MSHA: Crushed, Broken Stone NEC | 0 | 37,040 | 7 | 1 | 45.3 |
| Diablo Plant # 1360203350 · Active6/8 quarters reported | Pinal, AZSurface · MSHA: Construction Sand and Gravel | 0 | 35,663 | 9 | 0 | 38.0 |
| Dupont Pit4503334 · Active6/8 quarters reported | Pierce, WASurface · MSHA: Construction Sand and Gravel | 0 | 156,392 | 18 | 2 | 96.3 |
| GAREY ROCK PLANT0403031 · Active6/8 quarters reported | Santa Barbara, CASurface · MSHA: Construction Sand and Gravel | 0 | 69,616 | 5 | 2 | 47.0 |
| Grimes Rock a CalPortland Company0405432 · Active6/8 quarters reported | Ventura, CASurface · MSHA: Construction Sand and Gravel | 0 | 103,305 | 18 | 3 | 45.5 |
| Jackrabbit Aggregates0203407 · Active6/8 quarters reported | Maricopa, AZSurface · MSHA: Construction Sand and Gravel | 0 | 50,640 | 4 | 1 | 22.8 |
| Lake View Quarry2602386 · Active6/8 quarters reported | Clark, NVSurface · MSHA: Gypsum | 0 | 33,441 | 3 | 0 | 19.0 |
| Mojave Plant & Quarry0400036 · Active6/8 quarters reported | Kern, CAFacility · MSHA: Cement | 0 | 511,407 | 89 | 6 | 391.8 |
| New River Plant0203367 · Active6/8 quarters reported | Maricopa, AZSurface · MSHA: Construction Sand and Gravel | 0 | 45,249 | 7 | 0 | 20.0 |
| ORANGE GROVE0201203 · Active6/8 quarters reported | Pima, AZSurface · MSHA: Construction Sand and Gravel | 0 | 46,880 | 0 | 0 | 27.0 |
| ORO GRANDE QUARRY0400011 · Active6/8 quarters reported | San Bernardino, CAFacility · MSHA: Cement | 0 | 485,226 | 71 | 8 | 340.5 |
| Redding Plant0400034 · Active6/8 quarters reported | Shasta, CASurface · MSHA: Cement | 0 | 304,690 | 49 | 5 | 139.0 |
| RILLITO PLANT0201138 · Active6/8 quarters reported | Pima, AZFacility · MSHA: Cement | 0 | 402,626 | 47 | 9 | 148.0 |
| RILLITO QUARRY0200006 · Active6/8 quarters reported | Pima, AZSurface · MSHA: Crushed, Broken Stone NEC | 0 | 56,706 | 0 | 0 | 13.8 |
| Rocky Canyon Plant0404634 · Active6/8 quarters reported | San Luis Obispo, CASurface · MSHA: Crushed, Broken Granite | 0 | 36,028 | 2 | 3 | 33.0 |
| Sanderling Dredge4503687 · Active6/8 quarters reported | Columbia, ORSurface · MSHA: Sand, Industrial NEC | 0 | 17,235 | 1 | 1 | 22.0 |
| Santosh DBA CalPortland3500525 · Active6/8 quarters reported | Columbia, ORSurface · MSHA: Construction Sand and Gravel | 0 | 190,594 | 9 | 5 | 77.5 |
| Scheerer Quarry0405907 · Active6/8 quarters reported | San Bernardino, CASurface · MSHA: Sand, Common | 0 | 72,741 | 3 | 0 | 32.0 |
| Smokey Point Pit4500574 · Active6/8 quarters reported | Snohomish, WASurface · MSHA: Construction Sand and Gravel | 0 | 19,761 | 7 | 1 | 21.8 |
| Snoqualmie S&G dba CalPortland Company4503136 · Active6/8 quarters reported | King, WASurface · MSHA: Construction Sand and Gravel | 0 | 60,334 | 54 | 2 | 105.0 |
| Twin Peaks Aggregate0202283 · Active6/8 quarters reported | Pima, AZSurface · MSHA: Construction Sand and Gravel | 0 | 25,588 | 1 | 0 | 14.5 |
| VASHON SAND AND GRAVEL dba CalPortland4501707 · Active6/8 quarters reported | King, WASurface · MSHA: Construction Sand and Gravel | 0 | 11,012 | 7 | 1 | 19.8 |
| White River Quarry4503374 · Active6/8 quarters reported | King, WASurface · MSHA: Crushed, Broken Stone NEC | 0 | 19,198 | 7 | 0 | 42.5 |
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
- AGUA FRIA PIT31.47306, -111.01361Open map ↗
- Bluelake DBA CalPortland45.55944, -122.44861Open map ↗
- Canby Sand & Gravel DBA CalPortland45.25361, -122.71389Open map ↗
- Diablo Plant # 13633.02222, -111.54278Open map ↗
- Dupont Pit47.12278, -122.64056Open map ↗
- GAREY ROCK PLANT34.89361, -120.29944Open map ↗
- Grimes Rock a CalPortland Company34.33472, -118.90944Open map ↗
- Jackrabbit Aggregates33.37278, -112.47861Open map ↗
- Lake View Quarry36.25444, -115.17694Open map ↗
- Mojave Plant & Quarry35.03833, -118.29472Open map ↗
- New River Plant33.84111, -112.21472Open map ↗
- ORANGE GROVE32.32444, -111.17556Open map ↗
- ORO GRANDE QUARRY34.60639, -117.33583Open map ↗
- Redding Plant40.73750, -122.31806Open map ↗
- RILLITO PLANT32.41139, -111.14944Open map ↗
- RILLITO QUARRY32.36111, -111.18722Open map ↗
- Rocky Canyon Plant35.47417, -120.61167Open map ↗
- Sanderling Dredge45.79250, -122.84389Open map ↗
- Santosh DBA CalPortland45.78722, -122.85139Open map ↗
- Scheerer Quarry34.57278, -117.26222Open map ↗
- Smokey Point Pit48.20861, -122.14472Open map ↗
- Snoqualmie S&G dba CalPortland Company47.55139, -121.81250Open map ↗
- Twin Peaks Aggregate32.35333, -111.18306Open map ↗
- VASHON SAND AND GRAVEL dba CalPortland47.38083, -122.41861Open map ↗
- White River Quarry47.18222, -121.92361Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. All 25 mines listed under this controller were checked; 25 have reports in the available quarters. Totals use current ownership.
Hours worked
2,818,692reported employee hours
Tons per hour
0.00production ÷ hours worked
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
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 520,984 | 0.00 | 850 | 25/25 mines reporting |
| 2025 Q2 | 0 | 467,645 | 0.00 | 907 | 25/25 mines reporting |
| 2025 Q3 | 0 | 470,923 | 0.00 | 891 | 25/25 mines reporting |
| 2025 Q4 | 0 | 460,764 | 0.00 | 884 | 25/25 mines reporting |
| 2026 Q1 | 0 | 461,525 | 0.00 | 890 | 25/25 mines reporting |
| 2026 Q2 | 0 | 436,851 | 0.00 | 846 | 25/25 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
42179 significant & substantial (S&S)
Accident records
500 records classified as fatality
Proposed penalties · USD
255,817.00403 of 421 violations with amounts
On-site inspection hours
1,791.00126 inspections · 126 with hours
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
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 90 | 18 | 30,259.00 | 8 | 0 | 21 | 331.3 |
| 2025-Q2 | 62 | 15 | 48,442.00 | 7 | 0 | 19 | 265.8 |
| 2025-Q3 | 30 | 4 | 5,988.00 | 5 | 0 | 14 | 195.3 |
| 2025-Q4 | 80 | 22 | 111,096.00 | 3 | 0 | 17 | 329.8 |
| 2026-Q1 | 52 | 3 | 14,920.00 | 7 | 0 | 21 | 195.8 |
| 2026-Q2 | 66 | 14 | 29,781.00 | 9 | 0 | 11 | 284.3 |
| 2026-Q3 | 41 | 3 | 15,331.00 | 11 | 0 | 23 | 189.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Redding Plant · 0400034
MACHINERY · DAYS AWAY FROM WORK ONLY
Accident narrative
Clearing a chunk of cement through a port and cement flushed out of the port and got into the left eye of the employee.
- Lake View Quarry · 2602386
Spot Inspection · 7.0 on-site hours
- Snoqualmie S&G dba CalPortland Company · 4503136
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee stepped out of EE's dump truck while at the Snoqualmie Agg site. As EE turned to walk away from the cab, EE felt a pop in EE's left knee. EE did not think it was serious and continued to work. The symptoms worsened over the weekend and then reported the injury Monday morning on 9/28/2026. At this moment, EE has been prescribed Lost Time from 9/28 - 10/6.
- Redding Plant · 0400034
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
EE was removing and replacing light ballasts in various locations throughout the facility and on 9/21 reported their left arm was injured due to the repetitive task they were performing. EE was diagnosed with tennis elbow.
- RILLITO PLANT · 0201138
Compliance Follow-up Inspection · 1.8 on-site hours
- White River Quarry · 4503374
Special Emphasis Programs · 3.8 on-site hours
- RILLITO PLANT · 0201138
OTHER · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Supervisor was removing an employee from site for cause when an altercation occurred.
- Dupont Pit · 4503334
Spot Inspection · 0.0 on-site hours
- Dupont Pit · 4503334
50.20-1
- ORANGE GROVE · 0201203
Spot Inspection · 0.5 on-site hours
- Twin Peaks Aggregate · 0202283
Spot Inspection · 0.5 on-site hours
- Diablo Plant # 136 · 0203350
50.30(a)
- Scheerer Quarry · 0405907
56.14112(b)
- Diablo Plant # 136 · 0203350
Regular Safety and Health Inspection · 10.8 on-site hours
- Scheerer Quarry · 0405907
Regular Safety and Health Inspection · 7.0 on-site hours
- ORANGE GROVE · 0201203
Regular Safety and Health Inspection · 5.5 on-site hours
- Twin Peaks Aggregate · 0202283
Regular Safety and Health Inspection · 3.5 on-site hours
- RILLITO QUARRY · 0200006
Regular Safety and Health Inspection · 4.5 on-site hours
- RILLITO PLANT · 0201138
56.12004
- RILLITO PLANT · 0201138
56.12028
- RILLITO PLANT · 0201138
56.14132(a)
- RILLITO PLANT · 0201138
56.11002
- RILLITO PLANT · 0201138
Regular Safety and Health Inspection · 34.5 on-site hours
- RILLITO PLANT · 0201138
56.20003(a) · S&S
- RILLITO PLANT · 0201138
56.12006
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-13.
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.