Cargill SaltMining Incidents in 2023

Mine signal switch was discovered to be faulty, equipment was cleaned and replaced, test trips were done, travel resumed within 50 minutes of equipt. malfunction discovery.

Damaged brake line on P hoist making it inoperable until repaired.

P Hoist was not operable due to a blown hydraulic line.

Actuator mount on SHoist was loose, so maintenance tightened it up. When doing so, it threw the position sensor off. An electrician attempted to adjust the switch and the connection broke off making it inoperable.

PHoist had an alarm and would not function in auto or manual - South SPV1 pressure valve alarm would not reset.

Scheduled replacement of the north guides in the #3 hoist headframe was occurring. The replacement was not completed by the end of the shift, thus making #3 not usable until installation could be finished the next day. #4 and #2 hoists were still available. #3 was back in service on 10/22/23 at 6pm.

Scheduled replacement of the south guides in the #3 hoist headframe was occurring. The replacement could not be completed by then end of shift, thus making #3 not usable until install could be finished the next day. #4 and #2 hoists were still available. #3 was back in service on 10/15/23 at 3:30pm.

VFD module on PHoist

Cleveland Public Power outage caused skip mine to drop power

Programming error on P hoist

Service hoist down, MG set will not start.

Track limit switch failure on the PHoist

Output on system circuit received and electrical arc that damaged this particular output.

Drive fault on P-hoist

Overtravel of SHoist, unable to correct in manual.

Power went out on surface which affected the hoist and power undergound at 4:15pm, Evac was started 4:30, power came back on at 5:20, test trips were done and operations resumed. Power outage due to storms knocking out NYSEG service.

Production hoist was down due to blown drive module.

While attempting to raise the #4 cage to surface, the electrical breaker for the charging circuit on the #4 hoist drive failed.

Production Hoist fault

Loss of power feed from the utility company, Cleveland Public Power (CPP), that provides power to hoist.

#3 hoist stopped due to a brake fault. The solenoid connector shorted out on one of the brake manifolds. Upon investigation it was found that in the PLC board, a rack output had shorted out which led to the shorted out solenoid connector.

Issue with the PHoist PLC causing problems with travel. Error message showed ""E-stop"". Called EVAC of mine while we were troubleshooting to repair.

Production Hoist Blew a brake hydraulic Hose and the brake would not release.

On first skip of the day, hoist kicked out at the landing. Electricians began troubleshooting. Found E house to be very cold. Found bad converter. Began replacement once evacuation was called.

Electrician called stating they had no control over the production hoist as it was tripping out on the ground fault. They were not able to clear the fault and regain control of the hoist within 30 minutes. Upon inspection, it was found that the drive unit was causing the ground fault. The drive unit was replaced, and the system was tested.

EE USING AN OIL DRUM CART/DOLLEY TO MOVE A FULL 55 GALLON DRUM IN SURFACE LUBE ROOM. EE PICKED UP THE DRUM WITH THE CART, SLIPPED AND FELL. THE DRUM AND CART LANDED ON TOP OF EE, PINNING EE. EE WAS ABLE TO REACH EE'S CELL PHONE AND CALLED FOR HELP. EE WAS LOCATED IN A MATTER OF MINUTES; THE DRUM WAS LIFTED OFF OF EE AND EE WAS TRANPORTED VIA EMS TO THE HOSPITAL

An underground storeroom employee was working near a shelf when a pulley fell off the shelf and struck their right foot. Employee was given first aid by surrounding employees, transported out of the mine and to the hospital for further treatment.

EE was lifting a steel bar attempting to load it into a roll of belt. During this process, the EE strained their left shoulder.

One of the hoist ABB drives was overheating needed to be replaced. While installing the new drive, the drive rocked back, pulling hard on the EE's left shoulder and striking EE's shin. The employee sustained an abrasion/bruise to the left shin, a cut on the right middle finger, and a sore left shoulder.

2 employees were lifting a 13' long section of 6"" wide rectangular steel tubing in order to set it onto a dolly. Employee one lost their grip and dropped their end. The other end then pinched employees left middle finger between the edge of the steel and concrete floor causing a nondisplaced fracture of distal phalanx of left middle finger.

EE suffered 1st degree burn on right arm while checking coolant on piece of equipment.

Employee was using a knife to cut mesh. Employee was cutting toward themselves and slipped, causing the knife to penetrate their right thigh leading to a laceration. Employee received 2 stitches to close the wound.

EE's foot got caught on a chain and EE fell to the ground. EE put hands out to stopped self from falling. When EE hit the ground, EE injured finger.