This problem could be solved rather easily.
I note that a lot of new access covers are made of plastics, here.
Other side of the coin, I can't help but think that slack installation practice has caused these deaths to occur.
Animals with 4 legs will always be affected worse than any human regardless of footwear, because of step potentials.
How many times have we read here that some pet has been out for a walk and got electrocuted on one of these covers?.
At least if they were non-conductive (the covers) it would limit the number of fatalities.
Will it take a young child to crawl over one of these covers to be killed before something is "done" about slack Utilities not providing the "highest level of safety" that all thier websites say they do?.
Being a Faults-man for a PoCo, this really hits home, I would not want that on my conscience at all!.