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Mill utility employee was jackhammering in Silo 4 when the jackhammer became stuck. While attempting to free it, the jackhammer suddenly released and dropped, pinching the employee's right pinky between the jackhammer and a grizzly bar. The employee received medical treatment- reinserted fingernail and stitched it to hold in place. Was told to keep dry and clean.

Employee fell into a chute and onto the material below when the hatch door EE was leaning against unexpectedly opened. The hatch opened because the winch holding it in a semi closed position broke from its anchorage point.

EE was cutting a steel manifold from the side of 10SC001. While getting to the bottom of cutting the brackets off, the manifold broke loose unexpectedly and dropped 3 feet to the catwalk. The EE's foot got tangled in the manifold's valves and dragged EE down the catwalk. This resulted in a twisting of the EE's left ankle.

Employee was attempting to dislodge a stone in a jaw crusher with a long steel rod. As EE used downward pressure to strike the stone, EE struck EE's right hand on the edge of a steel plate that surrounded the crusher.

Employee was working to get an airslide to flow material when dust from above dropped down onto the employee and into their eye.

After haul truck operator backed up to primary crusher, crusher operator saw small fire near the passenger side front tire which grew quickly. EE called for the driver to evacuate, and both left the area. Driver reported no prior issues. Due to extensive damage, source/cause of fire is unknown. Believed to have started either in engine compartment or near front passenger tire.

***Reported 5/12/26 - EE claims EE stepped into a hole and experienced a pop in EE's knee

While attempting to remove a seized bearing from a shaft, the employee struck the bearing with a hammer. Upon impact, a chip from the bearing struck the employee under their safety glasses.

Employee was working on getting anvils out of the anvil ring of a VSI Crusher. EE was using a soft blow hammer to hit the anvils out of the ring when a piece of the harden steel broke off. The chipped piece of steel flew and pierced through EE's leather glove cutting the back of EE's right hand just above the ring finger knuckle.

At the start of the shift employee was climbing access ladder of 992G FEL. Employee stated they felt right arm tingle and feel numb. They did not slip or try to catch themselves, was just climbing ladder normally. EE was taken to clinic, diagnosed w/ arm/shoulder strain, placed on restricted duty and referred to PT for eval and treatment

EE was climbing the ladder of the shipping loader to go to work. When climbing the shipping loader, EE missed the step and fell backwards. EE landed on the ground on EE's right shoulder and back then hit the upper back portion of EE's head.

UNDER THE SILOS IS A TIGHT SPACE. WAS USING A WALK BEHIND SKID STEER. MOBILITY WAS LIMITED, OPERATOR WAS GOING IN REVERSE WITH A LIMITED FIELD OF VIEW

EE fell down an undetermined amount of stairs below the kiln feed area. The worker received multiple lacerations to head and nose requiring extensive care. Also informed late evening at the ER that there was a crack on one or both sides of vertebrae.

Employee was in the rollout chute removing a piece of 6" metal used for making 57's and then added plate steel for making 67's while doing this EE struck their ribs left side and stated they thought they felt a pop in their ribs and was having trouble breathing.

Employee was performing a team lift with another EE to set a 100lb. LP bottle from the back of a service. Due to a miscommunication between employees, injured employee had EE's fingers under the bottle when it was set down on the bumper.-smashed the tips of the middle and ring finger of left hand - resulted in restricted duty

The employee was working on the platform level of 471-BF-07. EE was raising cages by a rope to the upper section of the dust collector. EE looked up to communicate with the another employee. EE stepped backwards while continuing to look up and tripped over an empty box. When the employee braced EE's fall with EE's hands causing the injury to EE's right wrist.

A fire was observed at the northeast corner of the clinker cooler. Oil that leaked from the hydraulic system was ignited by hot material (approximately 1500F) that came from an undetected hole in the wall of the clinker cooler

Elevator was in the process of being test ran after previous repairs, during test run, elevator and one miner was stopped at the top landing unable to exit or move. Repairman was onsite and able to open the elevator and move to ground level. Miner was in the elevator for 33 minutes.

Employee was climbing down ladder on a loader. When employee moved rt hand a gust of strong wind caused employee to fall off ladder. Causing pain to the right knee

The employee was entering the production utility shed outside of the administration building. When EE attempted to open the door the hinge failed and the door struck EE in the head causing a laceration.

Employee was descending steps between two shaker screens. They missed a step and fell, injuring an ankle. Employee was taken to a clinic, X-ray revealed an ankle avulsion fracture. Seen by ortho the next day, fitted w/ a boot. RTW their next sched day with restricted duty.

Finger caught under crane cable after cable slack was winched taut resulting in a laceration requiring 6 stitches. Returned to full duty; no restrictions.

The employee was using a hammer to remove the ground engagement tool (tooth) on the loader bucket. When striking the GET, a chip from the hammer face broke off and entered the top of the employee's left forearm.

The employee was changing a unplugged drill bit. EE was using EEs hands to loosen and tighten the drill bit in place. EE could not get a sufficient grip on the drill due to wearing gloves that had oil/grease on them as did the drill. EE removed EEs gloves to attempt to improve EEs grip. EEs hand slipped while tightening the drill and struck the tip of the bit causing a laceration.

Employee was using a grinder with a wire wheel when EE stood up and accidentally hit the trigger of the grinder causing it to kick back and get bound up on EE's left forearm causing a laceration.

The employee was walking down the stairs at 1st bank silos when EE slipped on a piece of clinker causing EE to land EE's right foot awkwardly on the next step. On 03/05/2026 EE was issued light duty restrictions.

Employee was helping with a repair of a broken gearbox. A sledgehammer was brought up to strike the gearbox to facilitate its removal. During this process the hammer head stuck a cap extension on the gearbox. A piece of metal was ejected and struck the employee in the mouth cutting their upper lip and breaking/chipping 2 of their front teeth.

A maintenance millwright was walking down the stairs in the raw mill from the 1 1/2 floor and fell down the stairs hurting EE's knee.

unspecified metacarpal bone fracture while performing housekeeping

EE was working installing a liner and while positioning EE slipped and fell. There was excess water and mud in the area. EE fell and dropped the liner which caused EE's fracture and laceration to EE's left index finger.

Employee was running a walk behind skid steer removing snow around the scale-house. Employee was backing up and backed into a concrete bollard hitting right leg causing a large hematoma. Employee was sent to hospital via ambulance.

Contact person was called by the Illinois Tollway on the afternoon of 1/27/26 about a missing person that was suicidal that may have jumped in the West Quarry off of the 80/94 tollway. Second contact was contacted around 4:00PM to come help search the West Quarry. At around 4:50PM the body of the trespasser was found and reported to authority's and the department of labor.

EE was cutting electrical tape off the wire connections while wires were in junction box. EE was using a ceramic knife and had on cut level 4 gloves. While cutting the second wire connection the knife blade went across EE's left palm causing a 2 inch laceration.

Employee was standing near head pulley on C-5 and radioed the operator to start the belt. When started the torque arm holding the gear box assembly broke free allowing the assembly to spin forward. The assembly struck the employee in the left leg.

Miner exited work truck to begin drilling. Slipped and fell on ice/snow following snowfall.

The employee was doing a repair on the PC#3 conveyor belt. While doing so, EE cut a V-notch on each end of the splice. While EE was cutting the belt notch with EE's left hand pulling toward self the blade passed the belt and EE cut EE's right middle finger causing a small laceration needing a few stitches.

Employee was doing maintenance on a conveyor belt. Employee was cutting rubber for a skirtboard with a utility knife. Employee cut themselves in the left hand through a leather glove. Employee required sutures to close the wound.

Use of sledgehammer to remove wear plates inside a mill. Employee missed the wedge, hit wear plate that a small metal piece broke off and punctured employee in right upper leg area.

Minor back strain from lifting old wear plates that were being removed from a miller lining.

To maintain safe access, employee was cleaning undercarriage on excavator with a short-handled scraper. As employee was cleaning, they struck steel and jarred their shoulder. Employee was seen at a clinic, returned to work full duty, after a period of improvement, on 2/2, clinic referred employee for physical therapy. continues to work full duty, but PT makes it an MTI

Employees were putting a guard back on after replacing a bad idler when the guard slipped and hit one employee in the upper lip requiring six sutures.

Plant was shutdown to address problem on #2 screen feed belt. The tail pulley was removed and loaded into the skid steer bucket to be moved out of the way. While backing and turning to the right an employee walked into a blind spot causing the skid steer bucket to make contact with EE's left knee.

Using a wrench to loosen bolts on a waterline. Wrench slipped off bolt pinching their left ring finger between the wrench and pipe flange. Resulting in a fracture of their finger.

Miner stepped on snow-covered rock and tripped/fell. Landed on right side.

Employee was performing an inspection on the 90CR001 horizontal shaft impact crusher during a shift change. Upon inspection of the HSI Crusher, the employee found blow bars backed off and was in the process of torquing them when the employee fell approximately 4' onto the underlying 90CV001 belt. Employee received right ankle, shoulder and head injuries.

Employee was attempting to clear a blockage in a chute with a pry bar and missed the chute striking their right ring finger on the side of the chute wall. Initially first aid only, doctor visit on 12/23 found fracture in finger on x-ray making it reportable.

EE slipped and fell on EE's right hip

Employee lacerated forearm just below the elbow while running the bagging machine in the Fine Grind Plant. The wound required sutures to close.

Employee was installing a drive belt on the primary grizzly feeder with two other employees. During the task, their left thumb became wedged between the drive belts and a pulley,

Approx. 10:39pm on 11/22 we were contacted by Thornton fire dept. with a request for access to recover the body of an individual who had jumped to their death from Interstate 80/94 Tri-state tollway. The body was located approx. 150' below the road surface and was not accessible from the quarry & Was NOT Part of Mine Property according to Property Maps.