m03On January 21, 2015, a 54-year old miner (ground support) with 4 years of experience was killed at an underground lead mine.  The victim was operating a mechanical scaler in an intersection when a roof fall (55 feet long x 20 feet wide x 6 feet thick) occurred, covering the machine.

Best Practices

  • Establish safe work procedures that ensure a safe work location for miners conducting scaling operations, and train all miners to recognize and understand these procedures.
  • Discuss safe work procedures before beginning work.  Identify and control all hazards associated with the work to be performed and the methods to properly protect miners.
  • Always examine and test areas for loose ground before starting to work, after blasting, and as ground conditions warrant.
  • Identify and scale loose material from a safe position which will not expose miners to falling material.
  • Test for loose material frequently during work activities.  Be alert to any change of ground conditions.
  • Install ground support in roof and ribs where conditions warrant.
  • Use equipment with a reach that reduces the possibility of the equipment being struck by falling material.

Click here for: MSHA Preliminary Report (pdf), MSHA Investigation Report (pdf), Overview (powerpoint), Overview (pdf).

On June 11, 2009, a 57-year old mechanic with 31 years of experience was fatally injured at an underground lead/zinc mine while checking for a hydraulic leak on a loader. The victim leaned into the ejector plate relief port in the back of the loader bucket. The ejector plate of the bucket was retracted, crushing him against the back of the bucket.

Best Practices
  • Train persons to recognize work place hazards.
  • Establish safe work procedures before a task is performed.
  • Securely block equipment and components against hazardous motion at all times while performing maintenance work.
  • If equipment and components are to be moved, always verify persons are aware and in a safe location prior to movement.
  • Consult and follow the manufacturer's recommended safe work procedures for the maintenance task.

Click here for: MSHA Investigation Report(pdf), Overview(powerpoint), Overview(pdf)