While the political storm over the Gulf of Mexico oil spill has raged around BP, the other companies involved in the accident...have gone largely unnoticed...On Friday Halliburton was strongly attacked by Ed Markey, the Democratic representative from Massachusetts who is chairman of the House energy and environment sub-committee, for failing to contribute to funding for research into the effect of the spill on the gulf. BP has contributed $500m (€417m, £346m) to the fund. In a letter to Mr Markey, Tim Probert, Halliburton’s president for global business lines, wrote: “We at Halliburton share your concern about the environmental impacts of the disaster, but we do not share your assessment that Halliburton is ‘among the companies that bear[s] complete responsibility for it’"...Last month insurers that provided $700m of cover to Transocean filed suits with a US court arguing they should not be forced to pay a share of BP’s clean-up costs. [also refers to Anadarko, Cameron International]