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 beforeperforming electrical work inside a high voltage enclosure:
Locatethe high voltage visual disconnect away from the enclosure that supplies incoming electrical power to the enclosure.
Open the visual disconnectto provide visual evidence that the incoming power cable(s) or conductors have been de-energized.
Lock-out and tag-out the visual disconnect yourself. Never rely on others to do this for you.
Groundthe 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.”
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.”
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”
With so much false information going around and the politicization of mask wearing there are facts as best we know them at reliable sources like the CDC. The current bottom line is we accomplished much by protecting our communities but our work is not nearly over.
MSHA issued 92 imminent danger orders for people working at heights without fall protection between January 2019 and June 2020. The most common violations were truck drivers climbing atop their vehicles, and maintenance and quarry personnel climbing to or working without fall protection in high places. Supervisors have been ordered down from dangerous locations.
Deaths from falls have increased from 8% to 19% of mining fatalities in the last two years.
OSHA has a guide available for employers or employees to assist them in assessing the workplace and instituting the appropriate controls to make the return safe. It “focuses on the need for employers to develop and implement strategies for basic hygiene (e.g., hand hygiene, cleaning and disinfection), social distancing, identification and isolation of sick employees, workplace controls and flexibilities, and employee training.”
Many areas have done a poor job of opening up, either reducing controls before evidence indicated or failing to continue with controls like physical distancing or the wearing of face masks which should continue until a vaccine is available and widely administered. Remember, under OSHA’s recordkeeping requirements, COVID-19 is a recordable illness, and employers are responsible for recording cases of COVID-19 that have evidence of being contracted at work.
The National Fire Protection Association has its usual warnings and safety materials available here this year, but they are even more relevant this year. The public display in my town and many others are canceled which may motivate even more people to create their own. The usual gang of fools in the emergency room each year is bad enough, but with extra precautions and in some case extra burdens on emergency and healthcare professionals just isn’t needed.
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.”