Coal production
0reported short tons
ALL STATUSES / CONTROLLER PORTFOLIO
David H Murdock
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM00595
MINE PORTFOLIO
15 of 15 mines and facilities
2025-01-01 – 2026-10-13. 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.
| Mine | Location / type | Coal · short tons | Hours worked | Violations | Accident records | On-site inspection hours |
|---|---|---|---|---|---|---|
| Pacific Clay Pits0400558 · Active6/8 quarters reported | Riverside, CASurface · MSHA: Common Clays NEC | 0 | 8,682 | 3 | 1 | 10.8 |
| Parker Pits2500035 · Intermittent6/8 quarters reported | Lancaster, NESurface · MSHA: Fire Clay | 0 | 209 | 5 | 0 | 16.0 |
| Hoist Pit0405637 · Abandoned | Riverside, CASurface · MSHA: Clay, Ceramic, Refractory Mnls. | — | — | 0 | 0 | — |
| Huntington Tile Mining0401107 · Abandoned | San Bernardino, CASurface · MSHA: Talc | — | — | 0 | 0 | — |
| Komatsu Portable Plant5100247 · Abandoned | Maui, HISurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Omega Pit0401106 · Abandoned | San Bernardino, CASurface · MSHA: Talc | — | — | 0 | 0 | — |
| P-1 Open Pit Mine0404738 · Abandoned | San Bernardino, CASurface · MSHA: Common Clays NEC | — | — | 0 | 0 | — |
| Parker Pit2500537 · Abandoned | Lancaster, NESurface · MSHA: Common Shale | — | — | 0 | 0 | — |
| Piening Pit2500835 · Abandoned | Lancaster, NESurface · MSHA: Fire Clay | — | — | 0 | 0 | — |
| Pioneer Mine0404364 · Abandoned | San Bernardino, CASurface · MSHA: Talc | — | — | 0 | 0 | — |
| Plant 15100246 · Abandoned | Maui, HISurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Plant 25100205 · Abandoned | Maui, HISurface · MSHA: Crushed, Broken Stone NEC | — | — | 0 | 0 | — |
| Tri-Valley (Chen) Pit0405639 · Abandoned | Riverside, CASurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Vulcan Pit0404377 · Abandoned | San Bernardino, CASurface · MSHA: Talc | — | — | 0 | 0 | — |
| Yankee Hill Pit & Plant2500053 · Abandoned | Lancaster, NESurface · MSHA: Common Clays NEC | — | — | 0 | 0 | — |
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
6 of 15 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Pacific Clay Pits33.72639, -117.39306Open map ↗
- Parker Pits40.77639, -96.75250Open map ↗
- Hoist Pit33.66373, -117.31611Open map ↗
- Komatsu Portable Plant20.81917, -156.91972Open map ↗
- Plant 120.79889, -156.95194Open map ↗
- Tri-Valley (Chen) Pit33.66373, -117.31611Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. All 15 mines listed under this controller were checked; 2 have reports in the available quarters. Totals use current ownership.
Hours worked
8,891reported 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 | 1,356 | 0.00 | 5 | 2/2 mines reporting |
| 2025 Q2 | 0 | 1,511 | 0.00 | 3 | 2/2 mines reporting |
| 2025 Q3 | 0 | 1,499 | 0.00 | 5 | 2/2 mines reporting |
| 2025 Q4 | 0 | 1,673 | 0.00 | 6 | 2/2 mines reporting |
| 2026 Q1 | 0 | 1,364 | 0.00 | 5 | 2/2 mines reporting |
| 2026 Q2 | 0 | 1,488 | 0.00 | 5 | 2/2 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
82 significant & substantial (S&S)
Accident records
10 records classified as fatality
Proposed penalties · USD
1,423.008 of 8 violations with amounts
On-site inspection hours
26.755 inspections · 5 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 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q2 | 1 | 1 | 151.00 | 0 | 0 | 1 | 4.0 |
| 2025-Q3 | 4 | 1 | 819.00 | 0 | 0 | 1 | 11.0 |
| 2025-Q4 | 2 | 0 | 302.00 | 0 | 0 | 1 | 4.0 |
| 2026-Q1 | 1 | 0 | 151.00 | 0 | 0 | 1 | 5.0 |
| 2026-Q2 | 0 | 0 | — | 1 | 0 | 1 | 2.8 |
| 2026-Q3 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Pacific Clay Pits · 0400558
Regular Safety and Health Inspection · 2.8 on-site hours
- Pacific Clay Pits · 0400558
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was opening a valve to the water pipe. Plastic water line blew out a gasket, the pipe shifted causing employee to get injured.
- Parker Pits · 2500035
56.4201(a)(2) · $151.00 proposed
- Parker Pits · 2500035
Regular Safety and Health Inspection · 5.0 on-site hours
- Pacific Clay Pits · 0400558
56.16005 · $151.00 proposed
- Pacific Clay Pits · 0400558
50.30(a) · $151.00 proposed
- Pacific Clay Pits · 0400558
Regular Safety and Health Inspection · 4.0 on-site hours
- Parker Pits · 2500035
50.30(a) · $151.00 proposed
- Parker Pits · 2500035
56.15001 · $151.00 proposed
- Parker Pits · 2500035
56.4201(a)(1) · $151.00 proposed
- Parker Pits · 2500035
56.14207 · S&S · $366.00 proposed
- Parker Pits · 2500035
Regular Safety and Health Inspection · 11.0 on-site hours
- Pacific Clay Pits · 0400558
56.14115(b) · S&S · $151.00 proposed
- Pacific Clay Pits · 0400558
Regular Safety and Health Inspection · 4.0 on-site hours
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
4 linked operators.
Relationships reflect the selected mine status and current MSHA controller/operator fields.