Sand and Gravel

MNM Fatality – 8/18/20

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On August 18, 2020, a miner (21 year-old laborer in California with one year and twelve weeks of experience*) was killed while attempting to clear a material blockage (at a sand and gravel mine with 20 employees*). The miner entered the cone crusher to begin work when the material shifted and engulfed him.  He was extracted from the crusher and taken to a hospital, where he died the next day.

Best Practices: 

  • Properly design chutes and crushers to prevent blockages. Install a heavy screen (grizzly) to control the size of material and prevent clogging.
  • Equip chutes with mechanical devices such as vibrating shakers or air cannons to loosen blockages, or provide other effective means of handling material, so miners are not exposed to entrapment hazards by falling or sliding material.
  • Establish and discuss policies and procedures for safely clearing crushers.
  • Train miners to recognize and safely remove all potential hazards before beginning work and when clearing blocked crushers.

Additional Information: 

This is the 13th fatality reported in 2020, and the second classified as “Fall of Material.”  – * (Italicized details added by safeminers.com)

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

MNM Fatality – 7/29/20

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On July 29, 2020, a miner (63 year-old plant operator in Missouri with six years of experience*) was injured when his arm became entangled in a stacker conveyor belt (at a sand and gravel mine with three employees*). The victim was airlifted to a trauma center where he passed away a week later.

Best Practices: 

  • Turn off, lock out power sources and block against motion before removing or bypassing a guard or other safety device to clean, repair, perform maintenance or clear a blockage on a belt conveyor.
  • Never clean pulleys or idlers manually while belt conveyors are operating.
  • Avoid wearing loose-fitting clothing and keep tools, body parts and long hair away from moving belt conveyor components.
  • Train all personnel in safe work procedures.
  • Properly guard moving machine parts to protect persons from contact that could cause injury.

Additional Information: 

This is the 12th fatality reported in 2020, and the second classified as “Powered Haulage.” – * (Italicized details added by safeminers.com)

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

MNM Fatality – 7/9/20

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On July 9, 2020, a mine superintendent was electrocuted while attempting to reverse the polarity of a 4,160 VAC circuit by switching the leads inside an energized 4,160 VAC enclosure that contained a vacuum circuit breaker and disconnect.

Best Practices: 

  • Follow these steps before performing electrical work inside a high voltage enclosure:
    1. Locate the high voltage visual disconnect away from the enclosure that supplies incoming electrical power to the enclosure.
    2. Open the visual disconnect 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 yourself. Never rely on others to do this for you.
    4. Ground the de-energized conductors.
  • Verify circuits are de-energized using properly rated electrical meters and non-contact voltage testers.
  • Ensure properly qualified miners perform all work on high voltage equipment.
  • Wear properly rated and well maintained personal protective equipment, including arc flash protection such as a hood, gloves, shirt and pants.
  • Train miners on safe work practices for high voltage electrical equipment and circuits.

Additional Information: 

This is the 11th fatality reported in 2020, and the first classified as “electrical.”

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

MNM Fatality – 6/13/20

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On June 13, 2020, a dragline was found submerged in 25 feet of water where a miner had been using it to remove material from a pond. Divers attempted to locate the dragline operator, and after two days the dragline was extricated from the pond. The victim was recovered from the engine compartment behind the operator’s cab.

Best Practices: 

  • Maintain control of operating mobile equipment.
  • Keep all exits clear in cabs, including alternate and emergency exits, and make sure the doors open freely before beginning work.
  • Retrofit older models of equipment with current automatic braking systems.
  • Ensure all controls and brakes are set to the appropriate position for the task.

Additional Information: 

This is the ninth fatality reported in 2020, and the second classified as “Machinery”

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

MNM Fatality – 6/1/20

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On June 1, 2020, a contract truck driver died after falling from the top of his trailer.  The victim received first aid/CPR at the scene and passed away after being transported to a local hospital.

Best Practices: 

  • Discuss work procedures; identify all potential hazards to do the job safely.
  • Train everyone to recognize fall hazards and ensure that safe work procedures are discussed and established.
  • Include safe truck tarping requirements in site-specific hazard training.
  • Provide truck tarping safe access facilities where needed.
  • Provide an effective fall arrest secure anchorage system. Ensure that people wear and attach fall protection connecting devices where there is a danger of falling.
  • Use automatic tarp deploying systems to prevent people from working from heights.

Additional Information: 

This is the 8th fatality reported in 2020, and the third classified as “Slip or Fall of Person.”

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

MNM Fatality – 5/2/20

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On May 2, 2020, a miner entered a dredged sand and gravel bin through a lower access hatch to clear an obstruction. The miner was clearing the blockage with a bar when the material inside the bin fell and engulfed him.

Best Practices: 

  1. Lock-out, tag-out. Never enter a bin until the supply and discharge equipment is locked out.
  2. Train miners to recognize and safely remove all potential hazards before beginning work and when clearing blocked hoppers.
  3. Equip bins with mechanical devices such as vibrating shakers or air cannons to loosen blockages, or provide other effective means of handling material so miners are not exposed to entrapment hazards by falling or sliding material.
  4. Follow manufacturer recommendations for clearing out blockages.
  5. Establish and discuss policies and procedures for safely clearing bins.
  6. Install a heavy screen (grizzly) to control the size of the material and prevent clogging.

Additional Information: 

This is the 7th fatality reported in 2020, and the second classified as “Handling Material.”

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

2019 Fatality #25 / MNM #14

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Francis E. Tatro, a 69-year-old front-end loader operator with over 37 years of total mining experience, died from aspiration pneumonia on January 8, 2020.  Tatro suffered injuries and hospitalization as a result of an accident on July 30, 2019.  Tatro was operating a front-end loader when the front-end loader’s bucket contacted the ground, causing the front-end loader to abruptly stop. The force of the impact resulted in Tatro, who was not wearing a seat belt, striking the front window, which caused serious injury, including paralysis to the arms and legs. 

Best Practices: 

1. Always wear seat belts when operating mobile equipment.
2. Maintain control and stay alert when operating mobile equipment.
3. Know the hazards. Be certain anyone operating front-end loaders is aware of safe operating practices and potential hazards.

Click here for: Final Report (pdf).

MNM Fatality – 2/27/20

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On February 27, 2020, a miner died when an unsecured 20’x8’x1″ steel plate standing on edge fell and struck him. The steel plate was being used to cover the end of a feeder to allow an equipment operator to build an earthen ramp to the feeder.

Best Practices: 

  • Establish and discuss safe work procedures before beginning work.
  • Identify and control all hazards.
  • Task train everyone on safe job procedures and to stay clear of suspended loads.
  • Require all workers to stay out of the fall path of heavy objects/materials that have the potential of becoming off-balance while in a raised position.
  • Monitor routinely to confirm safe work procedures are followed.
  • Be aware of your environment. Factors such as wind, snow, and icy surfaces can affect the stability of an object.
  • When securing an object, identify the location of its center of gravity.

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

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 #10 / MNM #6

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On June 24, 2019, a 34-year-old contractor with 10 years of experience, received fatal injuries when he fell beneath the wheels of a tractor-trailer. Miners were using a bulldozer to pull the tractor-trailer, which had become stuck in the sand. As the tractor-trailer began to be pulled, the victim was seen walking toward the side of the truck. The victim died at the scene from crushing injuries after being run over by the truck wheels.

Best Practices: 

  • Do not allow people to ride in any area of a vehicle that is not equipped with a seat belt.
  • When approaching large mobile equipment, do not proceed until you communicate and verify with the equipment operator your planned movement and location. 
  • Stay in the line of sight with mobile equipment operators. Never assume the equipment operator sees you.
  • Ensure, by signal or other means, that all persons are clear before moving equipment.

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