Falling Sliding Material

Fatality #12 for Metal/Nonmetal Mining 2013

renewcomerLeave a comment

ftl2013m12On September 18, 2013, a 56-year old front-end loader operator with 16 years of experience was killed at a crushed stone operation. The victim was attempting to remove a rock from a pug mill hopper when he was engulfed by the material in the hopper.

Best Practices

  • Establish and discuss policies and procedures for safely clearing a hopper.
  • Equip hoppers with mechanical devices or other effective means of handling material so persons are not required to work where they are exposed to entrapment by sliding material.
  • Install a heavy screen (grizzly) to control the size of material and prevent clogging.
  • Task train persons to recognize all potential hazardous conditions and to understand safe job procedures for elimination of the hazards before beginning work.
  • Before working on or near equipment, ensure that the discharge operating controls are deenergized and locked out.
  • Wear a safety harness and lanyard, which is securely anchored and tended by another person, prior to entering bins, hoppers, tanks, or silos.

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

Fatality #5 for Metal/Nonmetal Mining 2013

renewcomerLeave a comment

ftl2013m05On April 16, 2013, a 58-year old shaftman with 32 years of experience was seriously injured at an underground salt mine. The victim and two coworkers were replacing a bushing on the side of a skip hoist in the production shaft. The victim was standing on a steel beam outside the handrails of a covered work platform where the coworkers were standing, when a piece of salt fell and struck him. He was transported to a hospital where he died on April 17, 2013.

Best Practices

  • Establish and discuss safe work procedures. Identify and control all hazards associated with the work to be performed in a shaft with the methods to properly protect persons.
  • Task train all persons to recognize all potential hazardous conditions and to understand safe job procedures for elimination of the hazards, such as falling material, before beginning work.
  • Examine the shaft and remove loose material prior to commencing work.
  • Implement measures to ensure persons are properly positioned and protected from falling material while performing shaft maintenance work.
  • Perform shaft maintenance work from a substantial platform with adequate overhead protection.
  • Perform maintenance work for skip hoists and other conveyances on the surface whenever possible.
  • Monitor personnel routinely to determine that safe work procedures are followed.

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

Fatality #4 for Metal/Nonmetal Mining 2013

renewcomerLeave a comment

ftl2013m04On April 4, 2013, a 30-year old general foreman with 6 years of experience was killed at a copper ore operation. An excavator was being used to position a 36-inch diameter by 40-foot long section of pipe to connect it to another section of pipe. The pipe, attached to the excavator by a lifting strap, shifted and fell on the victim.

Best Practices

  • Establish and discuss safe work procedures. Identify and control all hazards associated with the work to be performed along with the methods to properly protect persons.
  • Task train all persons to recognize all potential hazardous conditions and to understand safe job procedures for elimination of the hazards before beginning work.
  • Attach taglines to loads that may require steadying or guidance while suspended.
  • Securely block equipment against hazardous motion to ensure energy cannot be released while performing work.
  • Never work in the fall path of objects/materials of massive weights having the potential of becoming off-balanced while in a raised position.
  • Implement measures to ensure persons are properly positioned and protected from hazards while performing a task.
  • Monitor personnel routinely to determine that safe work procedures are followed.

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

Fatality #12 for Metal/Nonmetal Mining 2012

renewcomerLeave a comment

On August 17, 2012, a 58-year old equipment operator with 19 years of experience was killed at a cement operation. The victim was working on the roof of a 189-foot tall silo when the roof collapsed. Rescuers responded immediately and recovered the victim on September 4, 2012.

Best Practices
 

  • Routinely inspect the entire silo including walls, top, hopper(s), feeders, conveying equipment, liner, roof vents, etc. Look for structural damage, exposed rebar, stress cracks, corrosion, concrete spalling/cracking, signs of overfilling, top lifts, dust spills from seams during loading, damage to climbing devices, etc. The structure should be inspected by a professional engineer knowledgeable in silo design and construction.
  • Ensure a competent person conducts examinations to identify hazards.
  • If damage is discovered, prohibit use of and access on the silo and in the surrounding area until repairs are complete and/or a registered professional engineer has declared it structurally safe to use.
  • Modifications or equipment additions to a silo should be under the direction of a professional engineer.
  • Ensure process controls and dust collector baghouses are in working order to prevent overpressure, overfilling, or excessive vacuum. Dust leaving a silo may indicate structural damage or equipment malfunction.
  • Ensure aeration systems and other means of enhancing hopper flow are in working order so asymmetric flow patterns do not develop within the silo and damage the walls, hopper, and roof.
  • Provide silo level probes/weight measuring technology for /equipment to monitor silo material filling and discharge in the silo and keep it in working order.

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

Fatality #5 for Metal/Nonmetal Mining 2012

renewcomerLeave a comment

On April 11, 2012, a 49 year-old excavator operator with approximately 8½ years of experience was injured at a sand and gravel operation. The victim was removing bolts from a counterweight on the back of an excavator when the counterweight fell and struck him. He was hospitalized and died on April 12, 2012, as a result of his injuries.

Best Practices

  • Before working on or near equipment, establish safe work procedures consistent with the design of the machine. Train all persons to recognize and understand these procedures.
  • Follow the equipment manufacturer’s procedures for the work being performed to ensure that all hazards are addressed.
  • Provide adequate task training to persons assigned to perform the work. Utilize assistance from the manufacturer when the equipment incorporates new technology and features.
  • Install blocking materials before removing mounting bolts from machinery components which can fall during disassembly.
Click here for: MSHA Preliminary Report (pdf), MSHA Investigation Report (pdf), Overview (powerpoint), Overview (pdf).

Fatality #16 for Coal Mining 2011

renewcomerLeave a comment

On Friday, October 7, 2011, a 23-year-old section repairman with five years of mining experience was killed when a continuous haulage conveyor fell on him. A rock had been used to block up the continuous haulage conveyor. The victim was working beneath the continuous haulage conveyor attempting to repair the bridge conveyor chain.

Best Practices
  • Do not work under raised equipment unless it is securely blocked.
  • Use proper blocking material that is properly placed and stable.
  • Conduct thorough examinations of all areas where work is scheduled and have adequate oversight to ensure all tasks are performed in a safe manner.
  • Provide additional training for all work procedures emphasizing best practices for each specific task.
  • Evaluate hazard potential before working in tight spaces. Click on the following link for more information: MSHA – SLAM Risks the Smart Way – Safety and Health Outreach Program Home Page.
Click here for: MSHA Preliminary Report (pdf), MSHA Investigation Report (pdf).

Fatality #2 for Metal/Nonmetal Mining 2011

renewcomerLeave a comment

On March 2, 2011, a 51 year- old contract superintendent with 24 years of experience was killed at a phosphate rock operation. The victim was attempting to join two ends of 24-inch diameter pipe. Two excavators were being used to position the pipe in the saddle of a pipe fuser when the pipe slipped out and struck him.

Best Practices

  • Establish safe work procedures and identify and remove hazards before beginning a task. Follow the equipment manufacturer’s procedures for the work being performed to ensure that all hazards have been addressed.
  • Train persons to recognize the hazards associated with performing a task.
  • Repair broken or damaged equipment immediately.
  • Block material against motion to assure energy cannot be released while the task is performed.
  • Do not place yourself in a position that will expose you to hazards while performing a task.
  • Monitor personnel routinely to determine that safe work procedures are followed.

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

Fatality #24 for Metal/Nonmetal Mining 2010

renewcomerLeave a comment

On December 29, 2010, a 41 year- old laborer with 4 years of experience died at a dimension stone operation. The victim was replacing a hydraulic lift arm cylinder on a skid steer loader. The lift arms suddenly lowered, pinning him against the frame of the machine.

Best Practices

  • Establish safe work procedures and identify and remove hazards before beginning repair or maintenance tasks. Follow the equipment manufacturer’s procedures for the work being performed to ensure that all hazards have been addressed.
  • Train persons to recognize the hazards associated with performing repair or maintenance tasks.
  • Prior to performing repair or maintenance tasks, turn the power off and block any raised component against accidentally lowering.
  • Assign a sufficient number of persons to repair or maintenance tasks to ensure the tasks can be safely performed.
  • Do not place yourself in a position that will expose you to hazards while performing repair or maintenance tasks.
  • Monitor personnel routinely to determine that safe work procedures are followed.

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

Fatality #23 for Metal/Nonmetal Mining 2010

renewcomerLeave a comment

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).

Highwall Safety Alert

renewcomerLeave a comment

Winter months can bring drastic changes to the stability of highwalls due to freezing and thawing. Water accumulates in crevices of rocks and then freezes. The ice acts as a wedge to expand the crevice opening. The ice thaws and the cycle begins again which in turn compromises the stability of the highwall that can result in highwall failure.

MSHA has issued a Safety Alert that can easily be printed out and posted or used in a toolbox talk.

Click here for: MSHA Safety Alert: Highwall Stability