Mining Incidents

Star Pit #1 Metal/Non-Metal

JTL Group, Inc. · Surface
Controlled by Knife River Corporation
Cheyenne, Laramie County, WY  ·  Active
MSHA Mine ID: 4801383

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Fatalities
0
Total incidents
20
Years on record
2000–2023
Latest incident
Mar 2023
Compliance record
MSHA citations since 2001
150
citations
19
significant & substantial
$53,662
proposed penalties
$38,165
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q4 8,525 5 2 586.5
2025 Q3 11,706 3 0 256.3
2025 Q2 9,574 0 0 0.0
2025 Q1 4,998 4 0 800.3
2024 Q3 9,105 0 0 0.0
2024 Q1 4,785 0 0 0.0
2023 Q4 6,189 9 0 1454.2
2023 Q2 6,945 0 0 0.0
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

20 on file

2023 · 1 incident

March 16, 2023 WY · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
JTL Group, Inc. · Over-exertion (Not Elsewhere Classified)

Employee was running on mine surface and rolled right ankle. Employee is unsure exactly what happened to cause the ankle to roll.

2021 · 1 incident

July 2, 2021 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
JTL Group, Inc. · Caught in, under or between a moving and a stationary object

Employee was standing beside cone crusher after assisting to push some material through it with a frost bar. Another employee went around the crusher to manually open the cone further. Employee still by cone got right foot caught in pinch point. Employee suffered tendon damage and a broken heel as well as a laceration.

2020 · 1 incident

September 24, 2020 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
JTL Group, Inc. · Struck by... (Not Elsewhere Classified)

Employee was cutting rubber belting material with a razor blade knife. Employee was pulling knife towards self when it slipped out of the rubber material and EE hit EE's upper left leg with the blade. Employee received a laceration approximately 1 inch deep and 1 1/2 inches long. Employee received sutures to close the wound. Minimal impairment.

2017 · 1 incident

August 29, 2017 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
JTL Group, Inc. · Struck by... (Not Elsewhere Classified)

Employee was chipping hardened soil from the flange of a stacker inlet so that the flange could be changed. Employee was using a spud bar in a standing position above the inlet. On downward stroke spud bar hit rubber belting and bounced back up causing a small laceration above employees right eye. Employee was taken to medical clinic and received 7 sutures to close the laceration.

2016 · 1 incident

October 8, 2016 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
JTL Group, Inc. · Struck by... (Not Elsewhere Classified)

Employee and another employee were loading screen that were to be lifted up to the screen deck of a gravel crusher. While lifting the screen a sharp edge cut through the employees leather glove and left a laceration on left index finger on the second knuckle. Employee did receive medical treatment and four stitches to close the laceration.

2015 · 1 incident

March 11, 2015 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
JTL Group, Inc. · Struck by... (Not Elsewhere Classified)

A miner, engaged in crusher maintenance, was cutting a rubber conveyor belt with a razor knife in order to patch it. He was holding the knife in his right hand when the knife slipped out of the rubber material and back at him. The miner stabbed the palm of his left hand with the knife. Damage was limited to a small laceration.

2011 · 1 incident

July 26, 2011 WY · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
JTL Group, Inc. · Struck by falling object

A pieces of flattened expanded metal slipped out of the employees hand struck him in the leg puncturing his left thigh in two places which required stitches.

2009 · 1 incident

August 8, 2009 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
JTL Group, Inc. · Struck by... (Not Elsewhere Classified)

Cleaning off a metal plate without gloves on and cut hand.

2007 · 2 incidents

July 13, 2007 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Star Aggregates Inc · Struck against a moving object

Employee was running the dozer on grade, encountered ruts and jarred his back. Back became stiff over the weekend requiring employee to seek Chiropractic medical attention beginning 7/16/2007.

April 19, 2007 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
Star Aggregates Inc · Fall from machine

Very strong winds on that day, with gusts in excess of 60 mph. Mechanic was hooking up airlines on water tanker truck when the wind blew him off of the truck. Jarring back and neck when landing on ground. Back & neck where stiff, but didn't require immediate medical attention. Receiving Chiropractic treatments.

2006 · 1 incident

June 20, 2006 WY · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Star Aggregates Inc · Struck by... (Not Elsewhere Classified)

Employee was cutting drive blets on standard cone with a utility knife. He slipped and cut his right forearm. Cut required three stiches.

2005 · 2 incidents

July 19, 2005 WY · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Star Aggregates Inc · Fall onto or against objects

Employee strained his back. Employee was standing in chute, pulling on belting. He slipped on rock in chute and fell forward into front part of chute and twisted his back.

April 15, 2005 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Star Aggregates Inc · Struck by powered moving object

Employee was walking to car for lunch, scraper was headed to fill bin at same time. Both saw each other at same time. Both went right and then turned to left. Employee jumped away. Right front scraper tire ran over his right leg and left foot. Safety glasses broke, laceration on face. Bruising, swelling, abrasions, full extent of leg injuries not known at this time.

2004 · 2 incidents

September 1, 2004 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Star Aggregates Inc · Caught in, under or between a moving and a stationary object

Employee was unloading metal screens from supplier's truck. He had his fingers through the openings in the screen when the supplier's employee let go of the screens. The screens slid down the truck pinching his finger and bending it sideways.

August 31, 2004 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Star Aggregates Inc · Struck by... (Not Elsewhere Classified)

While using a sledge hammer employee missed the washer screw paddle. Sledge hit his right index finger smashing onto framework of wash plant. Fracturing right index finger.

2002 · 3 incidents

September 10, 2002 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman OTHER
Star Aggregates Inc · Bodily reaction, (Not Elsewhere Classified)

WHILE MOVING &/OR BENDING TO PICK UP A LARGE ROCK OFF OF A CONVEYOR BELT, EE HEARD A POP IN HIS UPPER BACK. HE DID NOT ACTUALLY PICK UP THE ROCK HE WAS JUST MOVING/BENDING TO REACH FOR ROCK.

May 3, 2002 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Star Aggregates Inc · Struck by... (Not Elsewhere Classified)

WHILE DISLODGING MATERIAL WITH A METAL TAMPING BAR, THE BAR SLIPPED AND HIT HIS FOOT CUTTING HIS LARGE TOE.

January 15, 2002 WY · Metal/Non-Metal miner, nec HANDLING OF MATERIALS
Star Aggregates Inc · Struck by... (Not Elsewhere Classified)

CHANGING GEAR BOX ON 10' TRANSFER BELT, THE GEAR BOX SMASHED HIS MIDDLE FINGER. HE PULLED BACK AND HIT HIS ELBOW ON A PIECE OF ANGLE IRON. AT THE TIME HE THOUGHT IT WAS NOT INJURED BAD ENOUGH TO REPORT AS WORK RELATED INNJUGY. HIS ELBOW CONTINUED TO HURT, HE SOUGHT MEDICAL ATTENTION IN APRIL. REPORTED TO EE AS A WORK RELATED INJURY 5-2-02. COMPLETED CO INJURY REPORT BUT DOES NOT WA

2001 · 1 incident

September 12, 2001 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Star Aggregates Inc · Struck against stationary object

WHILE CHANGING SCREENS, EMPLOYEE WAS TIGHTENING A BOLT. THE RATCHET SLIPPED CAUSING HIS RIGHT ELBOW TO HIT 2 SMALL BOLTS BRUISING IT. AT E.R DOCTOR ADVISED WORK FOR ONE WEEK, IMMOBILIZED ELBOW & PUT ARM IN A SLING. TYLENOL AS NEEDED FOR PAINONE WEEK LATER HIS HAND WAS SHAKING SO INDEFINITE RETURN TO WORK DATE.

2000 · 1 incident

November 15, 2000 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Star Aggregates Inc · Struck by falling object

A FROZEN CHUNK OF GRAVEL FELL FROM TOP OF TRAP THE FROZEN CHUNK HIT EE IN BACK OF HEAD, KNOCKING HIM UNCONSCIOUS. THE FROZEN CHUNK FELL APPROX15 FT EE RECOVERED CONSCIOUNESS QUICLY REFUSED IMMEDIATE MED ATTENTION BUT DID GO HOM WHERE HE LATER DECIDED TO SEEK MED ATTENTION SLIGHT CONCUSSION