Coal

Fatality #10 for Coal 2018

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c1810-fatalOn Thursday, December 20, 2018, a mobile bridge carrier (MBC) operator, with 5 years and 21 weeks of mining experience, was fatally injured while operating his detached, remote-controlled machine during the mining process.  As the continuous haulage system pulled forward in preparation of mining, he was crushed between the coal rib and the No. 2 mobile bridge conveyor that was between both mobile bridge carriers.
Best Practices: 

  • Maintain communications between equipment operators of a continuous haulage system prior to starting or tramming any component of the system.
  • Institute and maintain a high level of equipment-specific training for all operators, which includes proper operator positioning during machine operation and also protocols for certain scenarios.
  • Do not position yourself in pinch-point areas while remotely operating equipment.  Ensure that equipment operators remain in the confines of the equipment cab, if equipped, while the machine is running.
  • Always perform thorough pre-operational examinations on mobile equipment to identify any defects that may affect the safe operation of equipment before it is placed into service.
  • Be familiar with the de-energizing switches on your machine and remote-control unit. “Panic-out” at the first sign of a hazardous situation.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #9 for Coal 2018

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On Tuesday, December 11, 2018, a 38-year-old miner was fatally injured at a surface coal mine.  The miner was operating a front-end loader to move shot rock near the toe of a 63-foot-high highwall.  A large portion of the highwall collapsed onto the front-end loader, crushing the operator cab and fatally injuring the miner.
Best Practices: 

  • Safely examine highwalls from as many perspectives as possible (bottom, sides, and top/crest).  Look for signs of cracking and other geologic features that could lead to instability and secure or remove hazardous conditions.  Conduct additional examinations as ground conditions warrant, especially during periods of changing weather conditions.
  • Follow the approved ground control plan at all times to ensure the safe control of highwalls.
  • Use mining methods that ensure highwall stability and safe working conditions and do not excavate the base of the highwall.
  • Train all miners to recognize hazardous highwall conditions.
  • Operate mobile equipment perpendicular to the highwall or with the operator’s cab positioned away from the highwall.  Ensure that miners work, travel, and operate mining equipment at safe distances from the highwall.
  • Use proper blasting techniques for forming highwalls and thoroughly examine the highwall after each blasting operation.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #8 for Coal 2018

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On Wednesday, October 17, 2018, a 33-year-old auger helper with 3 days of total surface mining experience received fatal injuries during auger mining activities. The victim was attempting to move a section of auger steel by using the onboard crane when he was struck in the chest.
Best Practices: 

  • Maintain equipment in safe operating condition. Excessive pressure in a hydraulic circuit can drastically alter the control of booms, etc., creating serious hazards.
  • Establish policies and procedures for auger mining including, safe work procedures for removing auger steel from the auger tray.
  • Task train miners to recognize all potential hazards and understand safe job procedures before beginning work.
  • Monitor personnel routinely to ensure safe work procedures are being followed. Unauthorized persons should be kept clear of the work area.
  • Do not place yourself in a position that exposes you to hazards. Stand clear of suspended loads having the potential of becoming off-balanced while being moved.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #7 for Coal 2018

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On Friday, September 7, 2018, a 60-year-old haul truck operator with 1 year of total mining experience received burn injuries while attempting to escape from the cab of the burning haul truck he was operating.  Due to complications associated with his injuries, the victim died five days later.
Best Practices: 

  • Thoroughly examine all haulage equipment and repair safety defects before placing equipment into service.  Follow the original equipment manufacturers maintenance recommendations.
  • Check for accumulations of combustible materials, cracked or blistered hoses, and uninsulated wires.
  • Be alert to changes in the way the equipment sounds or to a visible plume of exhaust coming from the exhaust system.
  • Conduct risk assessments on all equipment to determine safe exit locations for required escape and evacuation plans.
  • Establish and keep current an Escape and Evacuation Plan for exiting equipment in the event of a fire (§ 77.1101).  Train employees on contents of this plan.
  • Install well designed stairs or ladders to the equipment at both ends for an alternate escape.
  • Ensure fire suppression systems are properly maintained and protected from damage.  Install automatic fire suppression systems and train miners on their use.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #6 for Coal 2018

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On Tuesday, September 11, 2018, a mobile bridge conveyor (MBC) operator, with 8 weeks of mining experience, was fatally injured during the mining process.  The continuous mining machine (CMM) and attached MBCs had been backed out of a completed cut.  While the CMM was being repositioned, it moved the attached MBCs and crushed the victim between his MBC and the coal rib.
Best Practices: 

  • Frequently communicate with other MBC operators before starting or tramming any component of the system.  Always be in a location where other MBC operators can readily see or communicate with you.
  • Install latching emergency stop switches so MBC operators can actuate them to prevent machine movement when they leave the operator’s cab or position.  See PIB No. P11-16 for information on man-in position switches. https://arlweb.msha.gov/regs/complian/PIB/2011/pib11-16.pdf
  • Stay out of MBC Red Zones if the CMM or any of the MBCs are energized.
  • Be familiar with how the de-energizing switches on your machine operate and immediately actuate them the moment a hazard is recognized.
  • Install man-in-position switches on mobile bridge conveyor systems so all MBC operators know everyone is in a safe position before initiating machine movement.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #5 for Coal 2018

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On Monday, June 4, 2018, a 43-year-old miner with 10 years of mining experience, was fatally injured when a roof jack struck him in the head.  At the time of the accident, the miner was a passenger in a personnel carrier that traveled over the roof jack, which was lying in the roadway at the time.  As a result of being hit, the roof jack was propelled into the passenger’s compartment, striking the victim. The victim was flown to a hospital where he died from his injuries.
Best Practices: 

  • Conduct thorough examinations of roadways and remove material that may pose a hazard to equipment operators, passengers, or other miners.
  • Maintain roadways free of excessive water, mud, and other conditions which have an impact on an equipment operator’s ability to control mobile equipment.
  • Establish safe operating procedures for mobile equipment and a maintenance schedule for roadways.
  • Secure loads being hauled to prevent them from falling off haulage vehicles.
  • Ensure each item being hauled reaches the intended destination.
  • If items are lost during transport, immediately search for them and warn other mobile equipment operators.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #4 for Coal 2018

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On Wednesday, March 28, 2018, a 29-year-old belt foreman with .eight years of total mining experience was fatally injured while he and a co-worker were in the process of splicing an underground conveyor belt when the conveyor belt inadvertently started.  The victim became entangled with the belt splicing tools as the conveyor belt moved.
Best Practices: 

  • Before splicing conveyor belts, perform the following steps:
    • Open the circuit breaker that supplies electrical power to the conveyor belt drive.
    • Open the visual disconnect for the cable that supplies electrical power to the conveyor belt drive.
    • Lock-out and tag-out the visual disconnect yourself and NEVER rely on someone to do this for you.
    • Release the tension in the conveyor belt take-up/storage unit.
    • Block the conveyor belt against motion.
  • Keep the key to the lock at all times while repairs and/or maintenance are performed.
  • Ensure that you are the only person who removes the lock after repairs and/or maintenance are completed.
  • Ensure that no miner is in harm’s way before starting the conveyor belt(s).
  • Provide a visible and/or audible system, with a start-up delay, to warn persons that the conveyor belt will begin moving.
  • Establish policies and procedures for performing specific tasks on conveyor belts and ensure all miners are trained.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #3 for Coal 2018

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On Friday, March 16, 2018, a 34-year-old mechanic with 16 years of total mining experience was fatally injured while operating a diesel personnel carrier on the mine haulage road.  The vehicle hit the right rib and rolled onto its left side.  The victim was partially ejected from the mantrip and the canopy of the mantrip came to rest on his chest.

Best Practices: 
  • Operate all mobile equipment at speeds that are consistent with the type of equipment, roadway conditions, grades, clearances, visibility, and other traffic.
  • Consider installing mechanical devices that limit the top speeds of fast-moving equipment.
  • Travel at safe speeds so that mobile equipment can be stopped within the limits of visibility.
  • Maintain haulage roadways free from bottom irregularities, debris, and wet or muddy conditions that affect the control of the equipment.
  • Maintain steering and braking components so that mobile equipment can be controlled at all times.
  • Properly maintain brakes, lights, and warning devices on mobile equipment.  Perform functional tests of the brakes and other safety devices during the pre-operational examination.
  • Install safety devices, including seat belts, and ensure they are properly used and/or worn.
  • Conduct task training for each type of personnel carrier or equipment being operated.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #2 for Coal 2018

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On Wednesday, February 21, 2018, a 38-year-old highwall mining machine operator, with 21 years of total mining experience, was electrocuted when he contacted an energized connection of a 7,200 volt electrical circuit.  The victim was found inside a transformer station troubleshooting and/or performing electrical work on the electrical system that supplies power to the mining machine.

Best Practices: 
  • Lock-Out and Tag-Out the electrical circuit yourself and NEVER rely on others to do this for you.
  • Follow these steps BEFORE entering an electrical enclosure or performing electrical work:
    1. Locate the circuit breaker or load break switch away from the enclosure and open it to de-energize the incoming power cable(s) or conductors.
    2. Locate the visual disconnect away from the enclosure and open it to provide visual evidence that the incoming power cable(s) or conductors have been de-energized.
    3. Lock-out and tag-out the visual disconnect.
    4. Ground the de-energized conductors.
  • Wear properly rated and well maintained electrical gloves when troubleshooting or testing energized circuits.  After the electrical problem has been found, follow the proper steps before performing electrical work
  • Use properly rated electrical meters and non-contact voltage testers to ensure electrical circuits have been de-energized.
  • Install warning labels on line side terminals of circuit breakers and switches stating that the terminal lugs remain energized when the circuit breaker or switch is open.
  • ​Electrical work must be performed by a qualified electrician or someone trained to do electrical work under the direct supervision of a qualified electrician.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).

Fatality #1 for Coal 2018

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On February 6, 2018, a 52-year-old electrician with 13 years of mining experience was fatally injured while working alone performing routine maintenance on a continuous mining machine.  A portion of rib, measuring 42 inches long, 28 inches high, and 14 inches thick, fell and struck the victim.  He was found between a coal rib and the continuous mining machine.

Best Practices: 
  • Be aware of potential hazards when working or traveling near mine ribs, especially when geologic conditions, or an increase in mining height, could cause roof or rib hazards.  Take additional safety precautions while working in these conditions.
  • Correct all hazardous conditions before allowing miners to work and travel in these areas.  Adequately support or scale any loose roof or rib material from a safe location.  Use a bar of suitable length and design when scaling.
  • Train all miners to conduct thorough examinations of the roof, face, and ribs in their work areas, including more frequent examinations when conditions change.
  • Install rib bolts with adequate surface area coverage, during the mining cycle, and in a consistent pattern for the best protection against rib falls.
  • Know and follow the approved roof control plan.  The roof control plan only contains minimum safety requirements.  Additional support may be required when roof or rib fractures, or other abnormalities are detected.

Click here for: MSHA Preliminary Report (pdf), Final Report (pdf).