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
- Copperton Concentrator · 4201996
103 (g) Written Notification Hazard Complaint Inspectio · 12.5 on-site hours
- Copperton Concentrator · 4201996
56.20003(b) · S&S · $1,126.00 proposed
- Copperton Concentrator · 4201996
56.12018 · $755.00 proposed
- Copperton Concentrator · 4201996
56.17001 · $226.00 proposed
- Copperton Concentrator · 4201996
56.12032 · $818.00 proposed
- Copperton Concentrator · 4201996
56.14100(b) · $755.00 proposed
- Copperton Concentrator · 4201996
56.14100(b) · $755.00 proposed
- Copperton Concentrator · 4201996
47.41(a) · $336.00 proposed
- Copperton Concentrator · 4201996
56.16006 · $755.00 proposed
- Copperton Concentrator · 4201996
Impoundment Spot Inspection · 23.0 on-site hours
- Copperton Concentrator · 4201996
HANDTOOLS (NONPOWERED) · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was working down by ball mill 6 and 7 in the cyclone feed pump build up area. Employee was using the bolt for a hammer and smashed a finger.
- Bingham Canyon Mine · 4200149
SLIP OR FALL OF PERSON · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
Operator was cleaning the operator cab windows from the drill deck, upon re-entering the cab the operator slipped on mud on the deck surface and fell at level impacting their right knee on the floor of the cab causing discomfort.
- Bingham Canyon Mine · 4200149
FIRE · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
At 19:20 the IP's heavy equipment caught fire. After EE's fire suppressant device failed EE opened the door to EE's vehicle, letting in the smoke before closing the door. After realizing EE should not stay in the vehicle any longer the IP evacuated the vehicle and went into EE's supervisors car awaiting medical aid.
- Kennecott Keystone Underground · 4201392
MACHINERY · FATALITY
Accident narrative
At approximately 05.12am on the 12th March 2026, a mechanic was struck by a drill boom in a surface workshop, causing fatal injuries.
- Kennecott Keystone Underground · 4201392
Fatal Accident Investigation · 69.3 on-site hours
- Kennecott Keystone Underground · 4201392
Description not reported
- Boron Operations · 0400743
Impoundment Spot Inspection · 1.3 on-site hours
- Copperton Concentrator · 4201996
Spot Inspection · 2.0 on-site hours
- Kennecott Keystone Underground · 4201392
57.11051(b) · $226.00 proposed
- Kennecott Keystone Underground · 4201392
57.11051(b) · $4,047.00 proposed
- Kennecott Keystone Underground · 4201392
48.7(a) · $1,355.00 proposed
- Bingham Canyon Mine · 4200149
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee dropped phone behind their desk. While moving the desk to retrieve the phone they heard a pop and felt excruciating pain in the right shoulder.
- Boron Operations · 0400743
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
A mechanic was entering the cab of 9107 drill from the mast side. At which time the door slammed shut for unknown reasons, pinching the mechanic's pinky finger between the door jam and the door.
- Bingham Canyon Mine · 4200149
HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
IP was changing a light on a haul truck and lost control of wrench, which flew back and lacerated their lip. Supervisor called over the emergency line at 12:38pm and arrived at Lark Gate to see EMT at 13:00. EMT cleaned the laceration and sent them to a clinic to get the laceration stitched up.
- Kennecott Keystone Underground · 4201392
INUNDATION · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Bad Air through bore hole caused oxygen deficient atmosphere and small amounts of H2S gas. Crew driving underground jeep lost power, employee then exited the jeep to check the master switch, the employee immediately could not breath, and yelled to the other two, they then grabbed their rescuers and retreated up the NOSS to fresh air.
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.