Limestone

MNM Fatality – 8/3/21

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On August 3, 2021, a 62 year old Utility Person with 14 years 48 weeks experience* was run over by a customer tractor-trailer while walking to his normal work area at a mine in Bridgeport, TX with 83 employees*.

Best Practices: 

  • Assure adequate illumination sufficient to provide safe working conditions.
  • Communicate with mobile equipment operators and make eye contact to ensure they acknowledge your presence. Be aware of the location and traffic patterns of mobile equipment in your work area.
  • Wear high visibility clothing when working around mobile equipment.
  • Wear strobe lights near mobile equipment.
  • Assure traffic controls provide for safe movement of mobile equipment and are followed. Operate mobile equipment at reduced speeds in work areas.
  • Stay clear of normal paths of travel for mobile equipment and train all persons to recognize work place hazards.

Additional Information: 

This is the 23rd fatality reported in 2021, and the ninth classified as “Powered Haulage.” (*details added by safeminers.com from MSHA data.)

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

MNM Fatality – 2/8/21

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On February 8, 2021, a 38 year old ground man* was fatally injured when he became entangled in a fluted tail pulley while attempting to shovel under an adjacent fluted tail pulley at a limestone min in Potosi, MO with 12 employees*.

Best Practices: 

  • Design, install, and maintain area guards with signage and locks in addition to the physical barrier.  Find more information on area guarding at https://www.msha.gov/guarding-slide-presentation-guarding-conveyor-belts-metal-and-nonmetal-mines.
  • Design and maintain secure guards so miners can perform routine maintenance on belt conveyor systems without contacting moving machine parts.
  • Do not perform work on a belt conveyor until the power is off, locked out and tagged, and machinery components are blocked against motion.
  • Never clean pulleys or idlers manually while belt conveyors are operating.
  • Establish policies and procedures for conducting specific tasks on belt conveyors.
  • Ensure that people assigned to work on belt conveyors are task trained, understand the associated hazards, and demonstrate safe work procedures before beginning work.
  • Ensure all new miners receive new miner training and task training.

Additional Information: 

This is the third fatality reported in 2021, and the second classified as “Powered Haulage.” *(details added by safeminers.com from MSHA data)

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

MNM Fatality – 8/21/20

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On August 21, 2020, a (customer*) truck driver (at a Gilmore City, IA mine with 32 employees*) sustained fatal head injuries while he was deploying the automatic tarp on his fifth-wheel side-dump trailer.

Best Practices: 

  • Install and use constant pressure electrical switches to deploy/retract automatic trailer tarps.
  • Inspect and maintain tarping systems routinely to ensure tarping systems function properly.
  • Install signs warning of the hazard of standing near trailers while automatic tarps are deployed/retracted.
  • Train miners on proper tarping techniques to understand the hazards associated with the work being performed.

Additional Information: 

This is the sixth fatality classified as “Machinery” in 2020. (Fatal Alert posted by MSHA 11/30/20.* Italicized details added by safeminers.com)

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

MNM Fatality – 5/21/20

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On May 21, 2020, two miners were working to hoist an electric motor from its base by anchoring a hoist to an overhead, unsecured steel pipe (at Missouri underground limestone mine with 51 employees*). The steel pipe slid out of place and struck one of the miners (60 year-old plant maintenance worker with 27 years and 9 weeks total mining experience*) in the head and back. The miner died on May 23, 2020, due to complications from his injuries.

Best Practices: 

  • Ensure load anchor locations are stable, substantial and adequate to support the load.
  • Establish and discuss safe work procedures before beginning work and ensure those procedures are followed.
  • Identify and control all hazards associated with the work to be performed and the methods to properly protect persons.
  • Follow the manufacturer’s recommended safe work procedures for the maintenance task.
  • Examine work areas for hazards that may be created as a result of the work being performed.
  • Position yourself in areas where you will not be exposed to hazards resulting from a sudden release of energy. Be aware of your location in relation to machine parts that can move.

Additional Information: 

This is the first fatality in 2020 classified as “Hand Tools.” *(Italicized details added by safeminers.com)

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

MNM Fatality – 7/24/20

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On July 24, 2020, two miners were loading explosives from inside an aerial lift’s basket when the basket jolted upward into the mine roof, causing the death of one of the miners.

Best Practices: 

  • Check all equipment before using it. Report all defects affecting safety to a responsible person for correction.
  • Service and maintain hydraulic systems according to the manufacturer’s specifications and schedules. Excessive pressure in a hydraulic circuit can drastically alter the control of booms, etc., creating serious hazards.
  • Instruct aerial lift users on hazard recognition and safe job procedures to avoid unsafe conditions.
  • Train lift operators in safe operating procedures listed in the operator’s manual.
  • Report equipment malfunctions and remove the equipment from service until repaired.

Additional Information: 

This is the 12th fatality reported in 2020, and the third classified as “Machinery.”

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

MNM Fatality – 6/19/20

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On June 19, 2020, a miner died while inspecting a stockpile for oversized material. As the victim walked along the toe of the stockpile, a portion of the stockpile collapsed, covering him with approximately four feet of material.

Best Practices: 

  • Establish and discuss safe work procedures before beginning work. Identify and control all hazards associated with the work to be performed and the methods to properly protect persons.
  • Task train everyone to recognize potential hazardous conditions that can decrease bank or slope stability and ensure they understand safe job procedures for eliminating hazards.
  • Stay clear of potentially unstable areas. Barricade the toe area to prevent access where hazards have not been corrected.
  • Oversteepened slopes may be flattened from the top of the stockpile by using a bulldozer to gradually cut down the slope.

Additional Information: 

This is the 10th fatality reported in 2020, and the first classified as “Falling, Rolling, or Sliding Rock or Material of Any Kind.”

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

2019 Fatality #11 / MNM #7

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Image from Merck Manual

On July 15, 2019, a plant manager stumbled on a drill bench resulting in a compound heel fracture. While undergoing preoperative procedures for his injured heel on July 19, 2019, he became unresponsive and passed away the following day.

Best Practices: 

  • Identify and address hazards. Always be aware of your surroundings and any hazards that may be present. Establish and discuss safe work procedures.
  • Conduct workplace examinations and risk assessments to identify and correct hazards before working on any task. Examine work areas for hazards
  • Provide sufficient illumination in all work areas.
  • Train all miners, especially workplace examiners, to recognize and understand safe job procedures. Communicate and correct hazards in a timely manner.
  • Prevent slips and trips. Clear the area of tripping and stumbling hazards. Maintain traction by ensuring walkways and footwear are free of potential slipping hazards such as dirt, oil, and grease.
  • Stay focused on your work for your safety and the safety of your fellow workers.

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

MNM Fatality – 1/8/20

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A miner fell into a portable load out bin on January 8, 2020, and died at the scene.

Best Practices: 

  1. Check handrails and gates. Ensure handrails and gates are substantially constructed, properly secured, and free of defects.
  2. Install mechanical flow-enhancing devices so workers do not have to enter a bin to start or maintain material flow.
  3. Don’t stand on material stored in bins. Material stored in a bin can bridge over the hopper outlet, creating a hidden void below the material surface.
  4. Lock-out, tag-out. Do not enter a bin until the supply and discharge equipment is locked out.
  5. Wear a safety belt or harness secured with a lanyard to an adequate anchor point before entering a bin. Station a second person near the anchor point to make sure there’s no slack in the fall protection system.
  6. Train all miners to recognize fall hazards and properly use fall protection.
  7. Provide safe access to all work places, and discuss and establish safe work procedures.

Click here for: MSHA Preliminary Report (pdf), News Story (web), Obituary (web), Final Report (pdf).

2019 Fatality #9 / MNM #5

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On June 10, 2019, a 22-year-old contractor with 3 years of experience, was fatally injured when he was pinned between a front-end loader and a concrete block. The victim was working in a conduit trench, preparing to install a junction box. The plant manager was using a front-end loader above to back fill the trench. The front-end loader over travelled the edge and toppled into the trench.

Best Practices: 

  • Establish and discuss safe work procedures.  Identify and eliminate or control all hazards associated with the task being performed.
  • Train and monitor persons on safe work positioning.
  • Keep mobile equipment a safe distance from the edge of unstable ground, open excavations, and steep embankments.
  • Operating speeds should be consistent with conditions of roadways, grades, and the type of equipment used.
  • Assure equipment operators are familiar with their working environment. Front-end loader operators must ensure personnel are not near the machine when in operation.

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

2019 Fatality #4 / MNM #2

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On March 7, 2019, a 46-year-contractor with three years of experience was fatally injured when he lost his balance and fell backwards through a narrow gap between two log washers and landed on a cable tray approximately 12 feet below.  The victim was changing drive belts on a log washer motor when his wrench slipped off of a bolt he was tightening, causing the loss of balance.

Best Practices: 

  • Always use fall protection equipment, safety belts and lines, when working at heights and near openings where there is a danger of falling.
  • Always be aware of your surroundings and any hazards that may be present.
  • Have properly designed handrails, guards, and covers securely in place at openings through which persons may fall.
  • Train personnel in safe work procedures regarding the use of handrails and fall protection equipment during maintenance and construction activities and ensure their use.
  • Conduct workplace examinations in order to identify and correct hazards prior to performing work.

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