 Trafigura agreed to a settlement of £30 million (US$42.4 million) to settle the class action suit against it.Law firm Leigh Day, which represented the Ivorian claimants, was found guilty of negligence after £6 million of the settlement funds were embezzled.In 2002, Mexican state-owned oil company Pemex began to accumulate significant quantities of coker gasoline, containing large amounts of sulfur and silica, at its Cadereyta refinery.