Some good questions prospector, but I'm afraid they will remain unanswered because the crew did not survive the accident. We, of course, can continue to presume, assume, guess, presuppose and feign the answers, through smoke & mirrors, but it will do no good.
Until someone discovers a new piece of evidence in the maze of testimony in the Mahon/Chippindale reports we will continue the merry-go-round.