Machinery

MNM Fatality – 2/29/20

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On February 29, 2020, a plant foreman was priming the main suction pump on a dredge when a two-inch coupling on the waterjet pipe failed, knocking the victim into the water. Divers retrieved his body several hours later. The victim was not wearing a life preserver.

Best Practices: 

  • Wear a life preserver where there is a risk of falling into the water.
  • Identify all possible hazards and ensure appropriate controls are in place to protect miners before beginning work.
  • Provide swimming training for everyone that works around water.

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

2019 Fatality #24 / Coal #11

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On December 23, 2019, a miner was fatally injured while attempting to remove a splice pin from a 72-inch mainline conveyor belt splice.  A belt clamp and racket-style chain come along failed, releasing stored energy and causing the belt to shift upward and pin the miner against the frame of the belt tailpiece.

Best Practices: 

  • Identify, isolate, and control stored energy: mechanical, electrical, hydraulic and gravitational. Relieve belt tension by releasing the energy at the take-up/belt storage system.
  • Check your environment. Always be aware of an object in your work location that could move if stored energy is released.
  • Check your equipment. Ensure belt clamps and other blocking equipment are substantial and properly rated for preventing conveyor belt movement.
  • Securely install, anchor, inspect, and test blocking equipment to ensure that it is able to prevent movement.
  • Conduct complete and thorough examinations from safe locations to identify hazards and items needing maintenance or repair.
  • Ensure miners are trained on safe work procedures. Develop step-by-step procedures and review them with all miners before they perform non-routine maintenance tasks such as adding or removing conveyor belt.
  • Properly block belts to secure components against motion.
  • De-energize electrical power and lock and tag the visual disconnect before beginning a belt splice.
  • Never use the start and stop controls (belt switches). This switch does not disconnect the power conductors.
  • Lock out and tag out disconnecting devices. Only the person who installed them can remove the lock and tag, and only after completing the work.
  • Talk to your coworkers. After the splice has been completed and before removing your lock and tag, ensure everyone is clear of the conveyor belt and communicate to others that you will be restarting the belt.

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

2019 Fatality #23 / MNM #13

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A contract maintenance mechanic was performing elevator maintenance when the car descended, crushing the mechanic against an elevator platform. The person died at the scene on December 3, 2019.

Best Practices: 

  1. De-energize, lock out and tag out, and block machinery or equipment that can injure miners – before entering the area.
  2. Post warning signs or barricades to keep miners out of areas where health or safety hazards exist.
  3. Install an audible alarm to warn of impending equipment movement.
  4. Evaluate and correct possible hazards promptly before working.
  5. Train personnel in safely using handrails and fall protection equipment during maintenance and construction activities. Ensure their use.

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

2019 Fatality #22 / MNM #12

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While spotting for a dump truck, a contractor stepped directly into the path of a bulldozer and died at the scene on November 16, 2019.

Best Practices: 

  1. Safety first. Before starting work, establish and discuss safe work procedures. Identify and control all hazards associated with the work and properly protect workers.
  2. Know where people are. Be aware of body positioning around equipment, traffic patterns, dump sites, and haul roads.
  3. Train miners and contractors on traffic controls, mobile equipment patterns, and other site-specific hazards.
  4. Stay alert. Do not place yourself in harm’s way.
  5. Communicate with mobile equipment operators and ensure they acknowledge your presence.
  6. Ensure travelways are clear before moving a vehicle or mobile equipment.
  7. Look behind you. Install “rear viewing” cameras or other collision warning systems on mobile equipment. When backing up, look over your shoulder to eliminate blind spots. When using mirrors, use all available mirrors.
  8. Wear reflective material while working around mobile equipment. Use flags, visible to equipment operators, to make miners and smaller vehicles more visible.

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

2019 Fatality #12 / MNM #8

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On Wednesday, July 17, 2019, a 32-year old general manager/owner was killed when he was struck by a hydraulic breaker. The victim and the excavator operator were in the process of positioning the excavator for a motor exchange when the hydraulic breaker attachment fell off the excavator and hit the victim.

Best Practices: 

  • Conduct adequate pre-operational checks and correct any defects affecting safety in a timely manner prior to operating mobile equipment.
  • Make sure machine implements are securely attached to prevent unintentional disconnection.
  • Stay clear of suspended loads and raised equipment.
  • Any repairs to equipment should be made to OEM specifications
  • Always position yourself in a safe location and away from potential “red-zone” areas.  Consult and follow the manufacturer’s recommended safe work procedures.
  • Train miners to recognize potential hazardous conditions and understand safe job procedures before beginning work.

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

MNM Fatality – May 13, 2019

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Fatality #6

On May 13, 2019, a 59-year-old supervisor with 40 years of experience was fatally injured when the stationary crane he was operating fell 85 feet into the quarry.

Best Practices: 

  • Ensure all safety devices are functional.
  • Conduct a visual inspection of the equipment, load, and rigging prior to placing equipment in operation..
  • Conduct a visual inspection of site conditions and potential hazards.

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

2019 Fatality #5 / Coal #3

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On Thursday, March 7, 2019, a 38-year-old miner with 10 years of mining experience received fatal injuries while he was working on the pad of a highwall mining machine (HWM).  The miner was contacted in a pinch point between a post and a section of the HWM (i.e. push beam) that was being removed as part of the normal mining cycle.

Best Practices: 

  • Establish and discuss safe work procedures for removing push beams.  Identify and control all hazards and develop methods to protect miners.
  • Determine the proper working position to avoid pinch points.  Monitor personnel to ensure safe work procedures are followed.
  • Always follow the equipment manufacturer’s recommended maintenance procedures and discuss these procedures during training.
  • Train miners to recognize potential hazardous conditions and understand safe job procedures before beginning work. 

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

MNM Fatality – March 6, 2019

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On March 6, 2019, a 35-year-old contractor with 35 weeks of experience was fatally injured when he was struck by a relief valve that was ejected from a 500-ton hydraulic jack.    The hydraulic jack was being engaged to make contact with the frame of a P&H 4100A shovel when the relief valve was ejected.

Best Practices: 

  • Inspect, examine, maintain, and evaluate all materials and system components used in the installation, replacement, or repair of pressurized systems to ensure they are suitable for use and meet minimum manufacturer’s specifications.
  • Test systems at lower pressures to verify connections and flow rates prior to full pressure use.
  • Position yourself in a safe location, away from any potential sources of failure, while pressurizing systems.   
  • Consult and follow the manufacturer’s recommended safe work procedures.
  • Establish and discuss safe work procedures that include hazard analysis before beginning work. Identify and control all hazards associated with the work to be performed and use methods to properly protect persons.

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

Coal Fatality – 1/5/19

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On Saturday, January 5, 2019, a 55-year-old contract miner received fatal injuries when he was pinned between a pneumatically powered air lock equipment door and the concrete rib barrier located near the shaft bottom.
Best Practices:

  • Design and maintain ventilation controls, including airlock doors to provide air separation and permit travel between or within air courses or entries.
  • Ensure that airlock doors are designed and maintained to prevent simultaneous opening of both sets of doors.
  • Ensure miners are trained in the proper use of automatic doors and procedures to follow in the event the doors malfunction.
  • Provide means to override automatic airlock doors and allow manual operation in case of an emergency.
  • Keep the path of automatic doors clear of miners and equipment.
  • When changes in ventilation are made, test automatic doors to ensure they operate safely under the new conditions.
  • Perform thorough examinations of airlock doors to assure safe operating conditions.  When a hazardous condition is found, remove the doors from service until they are repaired.

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

Fatality #12 for Coal 2018

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c1812-fatalOn Thursday, November 29, 2018, a mechanic with 29 years of mining experience was severely injured when hydraulic pressure propelled a piece of metal out of a hydraulic fitting that he was examining, and the metal penetrated his head.  The miner died on December 30, 2018, as a result of his injuries.
Best Practices: 

  • Train miners to recognize hazards in pressurized systems before troubleshooting or performing work on such systems.
  • Consult and follow the manufacturer’s recommended safe work procedures.
  • Position yourself in a safe location, away from any potential sources of failure, while troubleshooting or testing pressurized systems.  When possible, examine and inspect hydraulic components while they are de-pressurized.
  • Remove pressure from the hydraulic system before beginning modifications or repairs.
  • Make modifications or repairs with proper components and parts that are adequately rated and specifically designed for such purposes.

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