Data / Mines / Utah / Kennecott Keystone Underground
Kennecott Keystone Underground: 34 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Kennecott Keystone Underground is an active copper ore underground mine in Salt Lake County, Utah, operated by Kennecott Utah Copper LLC with 31 employees on MSHA's record (mine ID 4201392). Since January 1, 2022 MSHA inspectors issued 34 citations and orders there with $28,354 in proposed penalties, and 21 accident reports were filed there, with 19 injury or illness cases, 1 of them fatal.
The request: Watch Kennecott Keystone Underground (MSHA mine ID 4201392) in Salt Lake County, Utah: each new citation and each accident report. $10 of work on sign-up, no card.
SpecStream is the live web data engine for teams and agents. It reads the mine, citation, inspection and accident files that MSHA publishes, and this page is that reading. Ask for the mines of a commodity, state or operator with the operator's headquarters, website and size added from the web, and new mines, new citations and new accident reports arrive in your sheet, CRM, Slack or agent as MSHA posts them.
- MSHA mine ID
- 4201392
- Status
- Active since August 6, 2012
- Main commodity
- Copper ore
- Mine type
- Underground
- County
- Salt Lake County, Utah
- Nearest town
- Copperton
- Operator
- Kennecott Utah Copper LLC
- Parent company
- Rio Tinto Group
- Employees
- 31
- MSHA field office
- Salt Lake City UT Field Office
- Citations and orders since January 1, 2022
- 34
- Significant and substantial
- 9 (26.5%)
- Closure orders
- 5
- High negligence or reckless
- 4
- Proposed penalties
- $28,354
- Amount paid so far
- $27,600
- Inspections
- 43
- Inspector hours on site
- 1,014
- Citations per inspection
- 0.79 (all mines 2.30)
- Accident reports
- 21
- Injury and illness cases
- 19
- Fatalities
- 1
- Latest MSHA record
- November 5, 2026
- Citations issued to contractors here
- 166 ($382,364 proposed)
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 0 | 0 | $0 | 3 |
| 2023 | 6 | 2 | $10,740 | 3 |
| 2024 | 10 | 5 | $5,931 | 3 |
| 2025 | 12 | 1 | $10,929 | 8 |
| 2026 | 6 | 1 | $754 | 2 |
Standards cited most at Kennecott Keystone Underground
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 57.12032 | Underground metal and nonmetal mines | 5 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.14107 | Underground metal and nonmetal mines | 2 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 2 |
| 30 CFR 57.3360 | Underground metal and nonmetal mines | 2 |
| 30 CFR 50.10 | Reporting of accidents, injuries and illnesses | 2 |
| 30 CFR 57.11051 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.12004 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.12025 | Underground metal and nonmetal mines | 1 |
| 30 CFR 57.12002 | Underground metal and nonmetal mines | 1 |
| 30 CFR 50.20 | Reporting of accidents, injuries and illnesses | 1 |
| 30 CFR 48.9 | Training of miners | 1 |
| 30 CFR 57.13021 | Underground metal and nonmetal mines | 1 |
| 30 CFR 49.6 | Mine rescue teams | 1 |
Injury and illness cases at Kennecott Keystone Underground
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 1 |
| Permanent disability | 1 |
| Days away from work or restricted activity | 12 |
| No lost time, or an occupational illness | 5 |
What the accident reports at Kennecott Keystone Underground describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 7 |
| Powered haulage | 4 |
| Slip or fall of person | 2 |
| Exploding vessels under pressure | 2 |
| Fall of roof or back | 2 |
| Machinery | 2 |
| Inundation | 1 |
| Handtools (nonpowered) | 1 |
Equipment named in accident reports at Kennecott Keystone Underground
| Equipment | Reports |
|---|---|
| Mancar | 2 |
| Front-end loader | 2 |
| Load-haul-dump | 2 |
| Gunite machine | 1 |
| Rock or roof bolting machine | 1 |
| Hand tools (not powered) | 1 |
| Rock drill | 1 |
| Crane | 1 |
| Carriage-mounted drills | 1 |
Other open mines in Salt Lake County, Utah
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Bingham Canyon Mine | Kennecott Utah Copper LLC | Salt Lake County, UT | Copper ore | 876 | 487 |
| Copperton Concentrator | Kennecott Utah Copper LLC | Salt Lake County, UT | Copper ore | 233 | 385 |
| Beck Street | Staker & Parson Companies | Salt Lake County, UT | Construction sand and gravel | 26 | 102 |
| Hansen Pit | Geneva Rock Products Inc | Salt Lake County, UT | Construction sand and gravel | 62 | 49 |
| Parley's Stone | Arizona Materials | Salt Lake County, UT | Construction sand and gravel | 8 | 47 |
| North Salt Lake Mine | Utah Sand And Gravel | Salt Lake County, UT | Construction sand and gravel | 5 | 44 |
| Lehi Point East | Staker & Parson Companies | Salt Lake County, UT | Construction sand and gravel | 30 | 37 |
| Glenwood | TM Crushing, LLC | Salt Lake County, UT | Construction sand and gravel | 5 | 37 |
| Lakeview Rock Products, Inc. | Lakeview Rock Products, Inc. | Salt Lake County, UT | Construction sand and gravel | 23 | 31 |
| Mt Jordan Pit | Geneva Rock Products Inc | Salt Lake County, UT | Construction sand and gravel | 22 | 23 |
| Beef Hollow | Staker & Parson Companies | Salt Lake County, UT | Construction sand and gravel | 7 | 21 |
| West Valley | Arizona Materials | Salt Lake County, UT | Construction sand and gravel | 2 | 20 |
| Black Rock Quarry | Geneva Rock Products Inc | Salt Lake County, UT | Construction sand and gravel | 2 | 16 |
| WT Portable | Integrity Materials Management | Salt Lake County, UT | Crushed, broken stone | 2 | 9 |
| Crushing Plant 1 | M&T Enterprises LLC | Salt Lake County, UT | Construction sand and gravel | 7 | 8 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.