MNM Fatality – 4/19/21

On April 19, 2021, a 28 year old haul truck driver with 37 weeks and 5 days experience* stopped his haul truck in front of his personal vehicle to get his lunch at a crushed stone mine with 27 employees.*  While standing and eating his lunch, the haul truck rolled forward, pinning the miner between the haul truck and his personal truck.

Best Practices: 

  • Do not leave mobile equipment unattended unless the controls are placed in the park position and the brake is set.  NEVER use a steering column-mounted “dump brake” for parking.
  • When parking mobile equipment on a grade, chock the wheels or turn them into a bank.Maintain equipment braking systems in good repair and adjustment.
  • Position yourself in a safe location away from potential “danger-zone” areas.
  • Train miners to safely perform their tasks.

Additional Information: 

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

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

MNM Fatality – 10/14/20

On October 14, 2020 (at a South Carolina mine with 49 employees*), a lead person (61 years old with 17 years experience*) was killed when his pickup truck was struck by a haul truck.

Best Practices: 

  • Install and maintain collision avoidance/warning systems.
  • Equip smaller vehicles with strobe lights and flags positioned high enough to be seen from the cabs of haulage trucks in all lighting conditions.
  • Establish and follow communication protocols that require verbal verification for all mobile equipment operators.
  • Design haul roads to minimize congested areas and maximize visibility.
  • Do not drive smaller vehicles in a large truck’s potential path.
  • Train miners on mobile traffic patterns and policies. Do not rely on training or other administrative controls alone to prevent powered haulage or other accidents.

Additional Information: 

This is the 20th fatality reported in 2020 and the fifth classified as “Powered Haulage.” (Italicized details added by safeminers.com)

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

2019 Fatality #12 / MNM #8

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).

Loader Close Call Alert

On June 17, 2019, a front-end loader backed over a highwall, and the fall projected material from the loader bucket through the windshield. The operator was able to climb out of the cab and only suffered minor injuries. The operator was wearing a seat belt.

Best Practices: 

  • Always wear a seat belt when operating self-propelled mobile equipment.
  • Retrofit FELs, bulldozers, haul trucks, and other mobile equipment with operator’s seats that provide 3-point seat restraints, airbags, and other technologies to provide better protection to equipment operators. 
  • Always be attentive to changes in ground conditions and visibility when operating machinery.
  • Perform work a safe distance away from highwalls.
  • Maintain control of self-propelled mobile equipment while it is in motion.
  • Adequately task train mobile equipment operators.

Fatality #9 for Metal/Nonmetal Mining 2018

On August 22, 2018, a 29-year old miner with 1 year of experience was fatally injured while cleaning a snub pulley.  The victim was working from an aerial lift located under the belt conveyor when he became entangled in the conveyor pulley.

Best Practices

  • Ensure that persons assigned to clean conveyor belts have received adequate training and verify that safe belt conveyor work practices are followed.
  • Stay clear of moving equipment and do not reach into any part of a moving conveyor.
  • Avoid wearing loose-fitting clothing when working around moving conveyor belt components.
  • Verify that all incoming power connectors are open by a circuit breaker, the conveyor is stopped and secured from movement before working on belt conveyors.
  • Provide and maintain safe access to elevated areas where routine maintenance is performed.

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

Fatality #10 for Metal/Nonmetal Mining 2017

On October 17, 2017, a miner was fatally injured while operating a bulldozer on a downward slope. While pushing overburden to a rock bench below the top of the pit, he was ejected from the cab and run over by the left track. The machine continued to tram over the edge of the 58′ highwall.

Best Practices

  • Always wear a seatbelt when operating mobile equipment.
  • Never jump from moving mobile equipment.
  • Ensure that persons are trained, including task-training, to understand the hazards associated with the work being performed.
  • Block the dozer against motion by setting the parking brake and lowering the blade to the ground before dismounting equipment.  Set the transmission lock lever to ensure the transmission is in neutral.
  • Establish and discuss safe work procedures before beginning work. Identify and control all hazards associated with the work to be performed and use methods to properly protect persons.
  • Do not place yourself in a position that will expose you to hazards while performing a task.
  • Maintain control of mobile equipment while it is in motion.
  • Maintain equipment braking systems in good repair and adjustment. Do not depend on hydraulic systems to hold mobile equipment stationary.

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

Fatality #12 for Metal/Nonmetal Mining 2016

m12On September 8, 2016, a 58-year old Haul Truck Operator with 23 years of experience was killed at a granite mine.  The victim was operating a Caterpillar 773E haul truck and was returning to the pit to be loaded with shot rock. The truck veered from the right side of the haul road to the left and traveled over the berm at the top of the highwall.  The truck landed upside down approximately 150 feet below.  The victim was found outside the haul truck.

Best Practices

  • Always wear a seat belt when operating a haul truck or mobile equipment.
  • Conduct thorough, in depth task training to cover potential hazards.
  • Monitor employees regularly to ensure seat belts are worn when operating mobile equipment.
  • Emphasize that improperly worn seat belts can NOT provide the proper restraint to necessary to protect equipment operators in hazardous situations.
  • Conduct pre-operational checks to identify defects that may affect the safe operation of equipment before being placed into service.
  • Observe all speed limits, traffic rules, and ensure that grades on haulage roads are appropriate for haulage equipment being used. Maintain control and stay alert when operating mobile equipment.
  • Provide and maintain adequate berms and other barriers of mid-axle height.
  • Perform safety inspections that include braking systems and seat belts before operating equipment; promptly remove equipment from service if defects affecting safety are found.

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

Fatality #10 for Metal/Nonmetal Mining 2016

m10On July 25, 2016, a 59 year old Excavator Operator, with 17 years of experience, was killed at a limestone quarry.  Prior to the accident, the victim was loading shot rock into haul trucks. While waiting for the haul trucks to return, the victim was separating out over sized rocks when the cab of his excavator was struck by falling material from the highwall.

Best Practices

  • Operate excavators with the cab perpendicular to, and swinging away from, the highwall.
  • Examine highwalls from as many perspectives as possible (bottom, sides, and top/crest) while maintaining the safety of the examiner(s). Look for signs of cracking or other geologic discontinuities.
  • Maintain access to the top of highwalls so that thorough examinations can be conducted.
  • Perform supplemental examinations of highwalls, banks, benches, and sloping terrain in the working area during and following inclement weather.
  • Immediately remove all personnel exposed to hazardous ground conditions, barricade, and/or post signs to prevent entry, and promptly correct unsafe conditions.
  • Use mining methods that ensure highwall stability and safe working conditions.
  • Look, Listen and Evaluate your highwall and pit conditions daily, especially after each rain, freeze, or thaw.
  • Establish and discuss safe work procedures for working near highwalls.  Be your own examiner and find hazards before they find you.

Refer to PIB P10-09 ‘Safety Precautions for Operating Rubber Tired and Track-Mounted Excavators’ for additional information regarding hazards related to operating excavators at surface mines.

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

Fatality #3 for Metal/Nonmetal Mining 2016

m03On March 22, 2016, a 42-year old lead man with 6 years of mining experience was fatally injured at a surface limestone mine when he was struck by fly rock from blasting operations. The lead man was parked in his pickup truck at a location to prevent others from accessing the blasting site. He was approximately 1,200 feet from the blast area.

Best Practices

  • Review and follow site specific blast plan prior to loading any explosives.
  • Utilize technology, such as face profilers and borehole probes, to obtain specific geometric details of the material to be blasted.
  • Adjust stemming depth and/or decking to maintain adequate burden on all sections of the blast hole.
  • Develop a drill pattern by considering geology, face geometry, and surface topography.
  • Clear and remove all persons from the blast area unless suitable blasting shelters are provided to protect persons from flyrock. Allow at least 15 seconds after a blast for any flyrock to drop.
  • Examine blast site geology, communicate with the driller and review the drill log for angles, voids, competency of rock, loss of air, etc., prior to the loading any explosives. Make appropriate adjustments to ensure that the holes are not overloaded.
  • Ensure blasting and fly rock areas are properly calculated to ensure the blast site is clear of all persons.
  • Determine the actual burden for all face holes along their length and adjust the explosive power factor along the borehole accordingly.

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

Fatality #15 for Metal/Nonmetal Mining 2015

m15On August 3, 2015, an 18-year old truck driver (seasonal associate) with 9 weeks experience was killed at a granite mine. The victim backed his truck under a conveyor belt to be loaded. After exiting the truck, the victim entered a door leading underneath the “sand fines silo.” Soon after entering the silo, the structure collapsed burying the victim beneath the falling material.

Best Practices

  • Routinely examine metal structures for indications of weakened structural soundness (corrosion, fatigue cracks, bent/buckling beams, braces or columns, loose/missing connectors, broken welds, spills of stored solids, etc.).
  • Periodic detailed inspections should be performed which examine hopper and wall thicknesses, critical connections such as the hopper to the wall, and the material flow conditions. Both the inside and outside of the structure should be evaluated.
  • Report any changes in the discharge flow pattern which may be a result of an internal obstruction that causes non-uniform pressures on the silo structure.
  • Report all areas where indications of structural weakness are found.
  • Schedule inspections of the silo’s interior surface only when all material has been removed to determine if it has become polished and worn from use.

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