Here are examples of domains where the two-man rule is used: https://en.wikipedia.org/wiki/Two-man_rule https://en.wikipedia.org/wiki/Two-man_rule Given that m

Here are examples of domains where the two-man rule is used: https://en.wikipedia.org/wiki/Two-man_rule https://en.wikipedia.org/wiki/Two-man_rule Given that most people are effectively vaccinated for polio, I can see this plant being not quite so strict.