Coal production
0reported short tons
ALL STATUSES / CONTROLLER PORTFOLIO
Rio Tinto Group
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM01812
MINE PORTFOLIO
22 of 22 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.
| Mine | Location / type | Coal · short tons | Hours worked | Violations | Accident records | On-site inspection hours |
|---|---|---|---|---|---|---|
| Bingham Canyon Mine4200149 · Active6/8 quarters reported | Salt Lake, UTSurface · MSHA: Copper Ore NEC | 0 | 3,389,047 | 246 | 46 | 1,136.0 |
| Boron Operations0400743 · Active6/8 quarters reported | Kern, CASurface · MSHA: Boron Minerals | 0 | 2,253,991 | 140 | 14 | 626.3 |
| Copperton Concentrator4201996 · Active6/8 quarters reported | Salt Lake, UTFacility · MSHA: Copper Ore NEC | 0 | 928,674 | 214 | 5 | 698.8 |
| Kennecott Keystone Underground4201392 · Active6/8 quarters reported | Salt Lake, UTUnderground · MSHA: Copper Ore NEC | 0 | 184,020 | 105 | 10 | 514.3 |
| Owens Lake Mine0402834 · Intermittent6/8 quarters reported | Inyo, CASurface · MSHA: Trona | 0 | 14,298 | 0 | 0 | 11.0 |
| BORON OPERATIONS UNDERGROUND MIN0405366 · Abandoned | Kern, CAUnderground · MSHA: Boron Minerals | — | — | 0 | 0 | — |
| Boron Refinery0403886 · Abandoned | Kern, CAFacility · MSHA: Boron Minerals | — | — | 0 | 0 | — |
| California Clay Pit0405170 · Abandoned | Inyo, CASurface · MSHA: Common Clays NEC | — | — | 0 | 0 | — |
| Excelsior Mine4502531 · Abandoned | Whatcom, WAUnderground · MSHA: Silver Ore | — | — | 0 | 0 | — |
| FLAMBEAU MINE4702920 · Abandoned | Rusk, WISurface · MSHA: Copper Ore NEC | — | — | 0 | 0 | — |
| GERSTLEY MINE0404953 · Abandoned | Inyo, CAUnderground · MSHA: Boron Minerals | — | — | 0 | 0 | — |
| GERSTLEY MINE0405300 · Abandoned | Inyo, CAFacility · MSHA: Boron Minerals | — | — | 0 | 0 | — |
| Humboldt Mill2003420 · Abandoned | Marquette, MISurface · MSHA: Iron Ore | — | — | 0 | 0 | — |
| Kennecott Barneys Canyon Mining4202040 · Abandoned | Salt Lake, UTSurface · MSHA: Gold Ore | — | — | 0 | 0 | — |
| Ledyard Plant0600018 · Abandoned | New London, CTSurface · MSHA: Crushed, Broken Sandstone | — | — | 0 | 0 | — |
| Oceanside Plant0402304 · Abandoned | San Diego, CASurface · MSHA: Crushed, Broken Sandstone | — | — | 0 | 0 | — |
| Quartz Hill Project5001230 · Abandoned | Aleutians East, AKSurface · MSHA: Molybdenum Ore | — | — | 0 | 0 | — |
| REDHILL MINE0404395 · Abandoned | Calaveras, CASurface · MSHA: Talc | — | — | 0 | 0 | — |
| RIDGEWAY MINE3800626 · Abandoned | Fairfield, SCSurface · MSHA: Gold Ore | — | — | 0 | 0 | — |
| Three Rivers Plant4102418 · Abandoned | Live Oak, TXSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| TOYON MILL0404490 · Abandoned | Calaveras, CAFacility · MSHA: Talc | — | — | 0 | 0 | — |
| Utah Concentrator North4200717 · Abandoned | Salt Lake, UTFacility · MSHA: Copper Ore 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
8 of 22 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Bingham Canyon Mine40.56056, -112.09111Open map ↗
- Boron Operations35.02222, -117.70333Open map ↗
- Copperton Concentrator40.55028, -112.15583Open map ↗
- Kennecott Keystone Underground40.56472, -112.10028Open map ↗
- Owens Lake Mine36.61056, -118.06556Open map ↗
- Humboldt Mill46.46811, -87.73489Open map ↗
- Kennecott Barneys Canyon Mining40.49917, -112.08639Open map ↗
- Utah Concentrator North40.70297, -112.09670Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 22 mines listed under this controller were checked; 5 have reports in the available quarters. Totals use current ownership.
Hours worked
6,770,030reported 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 | 1,267,115 | 0.00 | 2,349 | 5/5 mines reporting |
| 2025 Q2 | 0 | 1,030,261 | 0.00 | 2,097 | 5/5 mines reporting |
| 2025 Q3 | 0 | 1,085,434 | 0.00 | 2,083 | 5/5 mines reporting |
| 2025 Q4 | 0 | 1,093,133 | 0.00 | 2,053 | 5/5 mines reporting |
| 2026 Q1 | 0 | 1,146,397 | 0.00 | 2,185 | 5/5 mines reporting |
| 2026 Q2 | 0 | 1,147,690 | 0.00 | 2,198 | 5/5 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
705111 significant & substantial (S&S)
Accident records
751 records classified as fatality
Proposed penalties · USD
806,088.00665 of 705 violations with amounts
On-site inspection hours
2,986.2586 inspections · 86 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 | 97 | 12 | 105,309.00 | 13 | 0 | 11 | 594.8 |
| 2025-Q2 | 78 | 13 | 69,361.00 | 9 | 0 | 13 | 315.3 |
| 2025-Q3 | 118 | 27 | 224,568.00 | 21 | 0 | 17 | 463.3 |
| 2025-Q4 | 194 | 26 | 178,676.00 | 13 | 0 | 10 | 523.5 |
| 2026-Q1 | 21 | 2 | 22,590.00 | 8 | 1 | 7 | 172.0 |
| 2026-Q2 | 127 | 13 | 181,674.00 | 3 | 0 | 11 | 552.5 |
| 2026-Q3 | 45 | 13 | 23,910.00 | 8 | 0 | 13 | 274.5 |
| 2026-Q4 * | 25 | 5 | — | 0 | 0 | 4 | 90.5 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Bingham Canyon Mine · 4200149
103 (g) Written Notification Hazard Complaint Inspectio · 0.0 on-site hours
- Boron Operations · 0400743
56.12032
- Boron Operations · 0400743
56.18002(b)
- Boron Operations · 0400743
50.30(a)
- Boron Operations · 0400743
56.20003(c)
- Boron Operations · 0400743
56.16001
- Boron Operations · 0400743
56.12028
- Boron Operations · 0400743
56.14107(a) · S&S
- Boron Operations · 0400743
56.12008 · S&S
- Boron Operations · 0400743
56.14100(b)
- Boron Operations · 0400743
56.12018
- Copperton Concentrator · 4201996
Impoundment Spot Inspection · 0.0 on-site hours
- Boron Operations · 0400743
56.13021
- Boron Operations · 0400743
56.16001
- Boron Operations · 0400743
56.11012 · S&S
- Boron Operations · 0400743
56.14101(a)(3)
- Boron Operations · 0400743
56.14132(b)(1)(i) · S&S
- Boron Operations · 0400743
56.4130(a)(3)
- Boron Operations · 0400743
56.14132(a)
- Boron Operations · 0400743
56.14100(b)
- Boron Operations · 0400743
Impoundment Spot Inspection · 2.5 on-site hours
- Boron Operations · 0400743
56.12004
- Boron Operations · 0400743
56.14112(a)(1)
- Boron Operations · 0400743
56.16001
- Boron Operations · 0400743
56.20003(a) · S&S
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
11 linked operators.
Relationships reflect the selected mine status and current MSHA controller/operator fields.