According to Henry Shue,what are the six factors required to make a cost a true harm?

A cost is a true harm when (1)the damage done is physical; (2)the potential damage is serious and possibly fatal; (3)the damage is irreversible; (4)the potential physical damage to the workers is undetectable for the victim without a level of medical care to which the workers would have no access; (5)the potential physical damage to workers is unpredictable for the victim without a level of knowledge to which the workers have no access;  (6)the undetectability and unpredictability are avoidable at the choice of the firm's management.