Mining Incidents
Fatality · MSHA Record #220122090029

Bulldozer Operator

July 26, 2012 at 5:40 PM
Portable Crushing Plant #1 · Surface · Metal/Non-Metal
Polk County, MN
Classification POWERED HAULAGE
Type Fall from machine
Investigator narrative
Full details are not yet known. Employee was lubricating a conveyor and the conveyor was started. Injuries are either from being thrown from the conveyor or being trapped in machinery.
Final MSHA investigation
On July 26, 2012, Peter P. Faust, equipment operator, age 49, was killed when he was thrown off the discharge end of a 150-foot long stacker conveyor. Faust was standing on the belt, greasing the head pulley, when a coworker started the stacker conveyor by switching the disconnect to the "on" position. Faust fell off the stacker conveyor 51 feet to the ground below. The accident occurred because management previously directed the electrical panel for the conveyor to be modified, allowing the stacker conveyor's start/stop switches to be bypassed. The wiring was changed to bypass the start/stop switches on the stacker conveyor's electrical panel provided by the manufacturer. At the end of each day and in preparation for the next day, the disconnect switch on the electrical panel located on the side of the stacker was placed in the "on" position so a person could remotely control the stacker conveyor from inside a control van, located approximately 230 feet away. This condition contributed to the stacker conveyor starting by a means other than recommended by the manufacturer. Additionally, Faust was greasing the head pulley on the stacker conveyor and it was not deenergized, locked and tagged out, and blocked against motion. The audible warning device was not sounded, as required, to warn Faust who was working on the stacker conveyor that the conveyor was going to start.
Root causes
  1. Management directed the wiring to be modified to bypass the start and stop switches on the stacker conveyor's electrical panel that was provided by the manufacturer.

    Corrective action: The wiring was returned to a manufacturer approved design.

  2. Management did not ensure that safe operating procedures were followed while persons greased the head pulley of the stacking belt conveyor. The victim accessed the stacker conveyor without ensuring that it had been deenergized, locked and tagged out, and blocked against hazardous motion.

    Corrective action: Management established policies, procedures, and controls to ensure that belt conveyors were deenergized, locked and tagged out, and blocked against hazardous motion before persons work on them. Management also installed grease lines that could be reached from the ground. A man-lift has also been provided to provide safe access. All miners have been trained regarding these new procedures.

  3. Management did not ensure that safe operating procedures were followed prior to starting the stacker conveyor. The required audible warning device was not sounded at the location of the accident when the stacker conveyor was started.

    Corrective action: A standard operating procedure for sounding the horn before starting the equipment was implemented and all miners were trained accordingly.

Findings from MSHA's final investigation report, which supersedes the preliminary narrative above.

Record details
Activity at time of incident
Machine Maintenance
Subunit / location
STRIP, QUARY, OPEN PIT
Accident type
Fall from machine
Source of injury
GROUND
Nature of injury
MULTIPLE INJURIES
Body part affected
MULTIPLE PARTS (MORE THAN ONE MAJOR)
Total mining experience
5 years
Experience at this mine
0 years
Experience in this job
6 years
Degree of injury
FATALITY
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Source: US Mine Safety and Health Administration (MSHA) · Document 220122090029 · Mine ID 2102843 Trainer view →