on this point there can be a categorising

of first, second and third instances

of the causes of unnatural death

a first instance cause would be a mortality

occurring be when someone was

installing some high voltage

electrical equipment

and had to test it

a second instance would be the

equipment used to test it

has a fault with it

a third instance would be the assembly

of the test equipment was the

cause of the problem

it appears that the causes don't go

beyond four or five instances in