Mining Incidents

MILL CREEK DOLOMITE Metal/Non-Metal

Mill Creek, Johnston County, OK  ·  Active
MSHA Mine ID: 3400008

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Fatalities
0
Total incidents
13
Years on record
2007–2025
Latest incident
Aug 2025
Compliance record
MSHA citations since 2000
285
citations
101
significant & substantial
$168,742
proposed penalties
$165,402
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 9,380 8 1 852.9
2025 Q3 2,599 1 0 384.8
2025 Q2 10,348 3 0 289.9
2025 Q1 2,152 6 2 2788.1
2024 Q4 9,232 0 0 0.0
2024 Q2 2,867 2 0 697.6
2024 Q1 9,607 4 0 416.4
2023 Q4 961 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

13 on file

2025 · 2 incidents

August 1, 2025 OK · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor HANDLING OF MATERIALS
Mill Creek Dolomite LLC · Struck by falling object

EE was installing buckets on an elevator when the EE's right hand slipped off the bar causing the bar to fall. When this happened the EE tried to catch the bar as it was falling and it ended up smashing EE's middle finger on EE's right hand. This injury resulted in the EE having to get five stitches in EE's middle finger.

January 13, 2025 OK · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor MACHINERY
Mill Creek Dolomite LLC · Caught in, under or between running or meshing objects

EE was cleaning out a chute due to material being clogged. After EE unclogged the chute they communicated this to the control operator. When the material began to clog up again EE reached into the chute to clear the material. At this time the control operator closed the gate crushing EE's hand. EE received three stitches in their right thumb.

2024 · 1 incident

February 13, 2024 OK · Metal/Non-Metal FIRE
Mill Creek Dolomite LLC · Accident type, without injuries

The belt was idled and it is believed that hot material was on the belt that started the fire.

2019 · 2 incidents

November 12, 2019 OK · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Mill Creek Dolomite LLC · Over-exertion in lifting objects

Employee was lifting a 5 gallon bucket of hydraulic oil out of the back of a pickup on a cold day when EE turned and twisted causing a muscle strain in back.

October 16, 2019 OK · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Mill Creek Dolomite LLC · Fall onto or against objects

While mounting a front end loader the employee's foot slipped striking EE's knee on ladder way. Employee reported at end of shift. Did not think EE needed any medical attention until 10/17/2019. Resulted in one day modified duty.

2018 · 1 incident

November 29, 2018 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Mill Creek Dolomite LLC · Struck by... (Not Elsewhere Classified)

EE was using a airless paint sprayer to paint a building. As the EE was cleaning the nozzle, EE accidently pulled the trigger while EE's right index finger was in front of the nozzle, causing a laceration and getting paint in the wound.

2016 · 1 incident

June 24, 2016 OK · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDTOOLS (NONPOWERED)
Mill Creek Dolomite LLC · Struck by flying object

EE was observing an EE removing an anvil from the VSI table during rebuild with a sledge hammer. As the anvil was struck, a sliver of metal broke loose and struck EE who was standing 10-15 feet away in the left leg above the knee, causing a small cut and puncture wound which required stitches. No Lost Time or Modified Duty.

2015 · 3 incidents

October 31, 2015 OK · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Mill Creek Dolomite LLC · Caught in, under or between a moving and a stationary object

While cleaning the threads of a conveyor belt adjustment bolt with a wire brush, the employees finger was pinched between the wire brush handle and the adjustment bolt cover causing a cut that required stitches.

October 21, 2015 OK · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Mill Creek Dolomite LLC · Fall from machine

EE was standing on the platform of a Komatsu FEL when he was attacked by a wasp. EE was holding onto the handhold swatting at the wasp when he lost his balance and fell ~6' to the ground suffering contusions to his hip and back and arm strain from holding onto the handhold. The post-accident drug test results revealed that the EE tested positive for THC and opiates.

March 12, 2015 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech DISORDERS (REPEATED TRAUMA)
Mill Creek Dolomite LLC · (Not Elsewhere Classified)

Hearing Loss - Confirmation of the reportable hearing loss

2013 · 1 incident

June 20, 2013 OK · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDLING OF MATERIALS
Mill Creek Dolomite LLC · Struck by falling object

Checking for a certain screen cloth size. The screens were standing on edge. The screens started to fall. Employee tried to catch the screen. The edge of the screen caught the tip of the ring finger on left hand. Finger was cut. It required 3 stitches to close the cut.

2010 · 1 incident

November 24, 2010 OK · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Unimin Corp · Caught in, under or between a moving and a stationary object

Employee was removing an inspection door from a bucket elevator. The door slipped pinching the end of his left ring finger between the door and elevator frame, requiring stiches. No modified duty was required. Employee returned to work with no lost time.

2007 · 1 incident

June 27, 2007 OK · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Unimin Corp · Struck by... (Not Elsewhere Classified)

Employee was cleaning a wet scrubber drain using a rotary drain cleaner when the cutting edge encountered hard mud causing the cleaning coil to twist striking the empolyee on the tip of his left ring finger, fracturing the end digit.