Guardian: It is not often we are given a very public – and highly critical – insight into an industry as private as oil. This is a sector that is used to secrecy, and one before which many governments, never mind members of the public, are forced to bend the knee. Big Oil is used to waving away questions about the way it operates with the assuring mantra that “safety always comes first”, but the blowout on board the Deepwater Horizon drilling rig last April blew away some of the …