THE legal battle has been launched to establish who should pay what for the blowout that destroyed Transocean’s Deepwater Horizon rig last April, killing 11 workers and triggering a massive oil spill. BP has filed in US courts for damages of up to the total cost of the spill apiece from contractors Halliburton and Transocean – a total of more than $80bn.
BP has estimated that the disaster will cost more than $40bn – plus...