Limestone

Fatality #9 for Metal/Nonmetal Mining 2012

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On June 21, 2012, a 49-year old customer truck driver with no mining experience was killed at a surface stone mine. He was driving a loaded dump truck, traveling down a grade, when the truck lost its brakes and went out of control. The victim jumped out and the truck ran over him. A passenger in the truck also jumped out and was treated at a hospital and released.

  • Ensure that mobile equipment operators are task trained adequately and demonstrate proficiency in all phases of mobile equipment operation before performing work.
  • Maintain equipment braking systems in good repair and adjustment.
  • Conduct adequate pre-operational checks to ensure the service brakes will stop and hold the mobile equipment prior to operating.
  • Know the truck’s capabilities, operating ranges, load-limits and safety features.
  • Operators of self-propelled mobile equipment shall maintain control of the equipment while it is in motion.
  • Operating speeds shall be consistent with conditions of roadways, tracks, grades, clearance, visibility, curves, and traffic.
  • Slow down or shift to a lower gear when necessary. Post areas where lower speeds are warranted.
  • Always wear a seat belt when operating self-propelled mobile equipment.
  • Do not attempt to exit or jump from moving mobile equipment.
  • Provide adequate site specific hazard training to all customer truck drivers.

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

Fatality #6 for Metal/Nonmetal Mining 2012

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Best Practices

  • Ensure that mobile equipment operators are task trained adequately and demonstrate proficiency in all phases of mobile equipment operation before performing work.
  • Conduct adequate pre-operational checks and ensure the service brakes are properly maintained and will stop and hold the mobile equipment prior to operating.
  • Operators of self-propelled mobile equipment shall maintain control of the equipment while it is in motion.
  • Operating speeds shall be consistent with conditions of roadways, tracks, grades, clearance, visibility, curves, and traffic.
  • Ensure that equipment manufacturer’s load limits are not exceeded.
  • Slow down or drop to a lower gear when necessary. Post areas where lower speeds are warranted.
  • Always wear a seat belt when operating self-propelled mobile equipment.
  • Ensure that equipment operators maintain adequate communications.
Click here for: MSHA Preliminary Report (pdf), MSHA Investigation Report (pdf), Overview (powerpoint), Overview (pdf).

Fatality #3 for Metal/Nonmetal Mining 2012

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On February 22, 2012, a 46 year-old plant mechanic with 7 years of experience was injured at a crushed stone operation when he fell 16 feet from an elevated walkway of a conveyor to the ground below. The victim and a coworker had been bolting a snub pulley in position. The coworker was positioned on a walkway on the other side of the belt. The victim was hospitalized and died on February 26, 2012.

Best Practices 

  • Establish and discuss safe work procedures. Before starting any work, identify and control all hazards.
  • Train all persons to recognize and understand safe job procedures, including the proper use of fall protection.
  • Always use fall protection when working where a fall hazard exists.
  • Install railings or cables when persons are required to work or travel near the edge of a structure.

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

Fatality #5 for Metal/Nonmetal Mining 2011

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On April 25, 2011, a 31 year- old drill operator with 6 weeks of experience was killed at an underground crushed stone operation. He was walking in a crosscut when a slab of roof, approximately 5 feet wide by 6 feet long by 10 inches thick, struck him.

Best Practices

  • Train persons to identify work place hazards and take action to correct them.
  • Design, install, and maintain a support system to control the ground in places where persons work or travel.
  • Examine and test ground conditions in areas where work is to be performed prior to work commencing and as ground conditions warrant during the shift.
  • When ground conditions create a hazard to persons, install additional ground support before other work is permitted in the affected area.
  • Be alert to any change of ground conditions.

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

Fatality #23 for Metal/Nonmetal Mining 2010

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On December 23, 2010, a 35 year- old contract blaster with 12 years of experience died at a crushed stone operation. After firing the blast, he immediately walked into the blast site to examine the shot material. The victim was approaching the edge of the shot material when the ground collapsed, engulfing him in the water-filled pit.

Best Practices

  • Conduct effective workplace examinations in areas where contractors are working. Identify all hazards, and take action to correct them.
  • Establish mining plans based on geological evaluations and implement procedures to effectively protect all persons.
  • Establish methods to identify subsurface cavities and voids such as advance drilling and geophysical surveys (ground penetrating radar – GPR), electrical resistivity, or other available methods.
  • Wait at least 15 minutes or longer before conducting post-blast inspections. Take additional time if geological anomalies or other hazards are identified during drilling or blasting.
  • Keep a safe distance from cracks or any other signs of unstable ground conditions.
  • Tie off using a secure anchorage zone.
  • Wear a life jacket where there is a danger from falling into water.

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

Fatality #22 for Metal/Nonmetal Mining 2010

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2010 MNM Fatality 22On December 17, 2010, a 35 year- old truck driver with 11 weeks of experience died at a crushed stone operation. The victim was standing on a belt conveyor, working inside a chute, when the belt conveyor started. He was pulled out of the chute and conveyed under two other chutes located on the same belt conveyor. After the belt conveyor was shut down, the victim was found under a third chute.

Best Practices

  • Establish safe work procedures before conducting specific tasks on belt conveyors and ensure that the safe work procedures are followed.
  • Train persons to recognize the hazards of working near belt conveyors.
  • Deenergize and block belt conveyors against motion before working near a chute, drive, head, tail, and take-up pulleys.
  • Lock-out/tag-out all energy sources to belt conveyors before working on them.
  • Sound audible warnings or alarms prior to starting belt conveyors.
  • Maintain communications with all persons performing the task. Before re-starting belt conveyors, ensure that all persons are clear.

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

Fatality #18 for Metal/Nonmetal Mining 2010

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2010 MNM Fatality 18On October 16, 2010, a 52 year- old haul truck driver with 5 years of experience died at a crushed stone operation. He was using an air-powered hammer/chisel to clean hardened material on a belt conveyor tail pulley. The victim was positioned on top of the return side of the belt conveyor, facing the tail pulley, when the belt conveyor was energized, entangling him in the tail pulley.

Best Practices

  • Deenergize and block belt conveyors against motion before working near a drive, head, tail, and take-up pulleys.
  • Lock-out/tag-out all energy sources to belt conveyors before working on them.
  • Establish policies and procedures for conducting specific tasks on belt conveyors.
  • Ensure that persons are task trained and understand the hazards associated with the work being performed.
  • Maintain communications with all persons performing the task. Before re-starting belt conveyors, ensure that all persons are clear.

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

Fatality #7 for Metal/Nonmetal Mining 2010

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On May 24, 2010, a 61-year-old maintenance foreman with 32 years of experience was fatally injured at a crushed stone operation. The victim entered a vertical roller mill without locking out the electrical power switch. The mill was started with the victim in the mill.

Best Practices

  • Always follow established lock-out and tag-out procedures.
  • Never rely on others to place your lock on electrical power switches.
  • Always post warning notices at the power switches.
  • Never enter machinery without ensuring the energy source is locked out.
  • Always test to ensure power is off after locking out.
  • Maintain power switch lock out mechanisms to function properly.

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

Fatality #5 for Metal/Nonmetal Mining 2010

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On May 5, 2010, a 21 year-old old contract driller with 1 year of experience was fatally injured at a crushed stone operation. The victim was repositioning a truck mounted drill. He lowered the mast and raised the leveling jacks to move the drill. The drill then rolled down a grade and struck him.

Best Practices

  • Maintain parking brakes to ensure proper function.
  • Always set parking brakes when leaving a vehicle unattended.
  • Ensure parking brake will hold the vehicle before exiting cab.
  • Use tire chocks when parking equipment on grades.
  • Never attempt to enter the cab of a runaway vehicle.

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

Fatality #2 for Metal/Nonmetal Mining 2009

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On January 17, 2009, a 48 year-old mill operator with 22 weeks of experience was fatally injured at a crushed stone milling operation. The victim was loading material into a hopper with a front-end loader. He entered the hopper to dislodge frozen bridged material that would not feed onto the belt conveyor below. Coworkers found the victim engulfed in the hopper.

Best Practices

  • Establish and review procedures to ensure all possible hazards have been identified and appropriate controls are in place to protect persons before beginning work.
  • Train miners in safe work procedures and hazard recognition, specifically when clearing blocked hoppers.
  • Lock out discharge operating controls.
  • Ensure a safety harness properly secured to a lanyard is worn and a second person is positioned outside to adjust the lanyard.
  • Management should routinely monitor these activities to ensure miners are protected from possible hazards.
  • Provide vibrating shakers to maintain material flow or mechanical means of safely removing material if hoppers experience recurring flow problems.

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