RIYADH, 15 July — Saudi businessmen are expected to suffer a big loss of more than SR520 million ($138 million) due to a ban on import and sales of Spanish olive oil which the Commerce Ministry slapped recently, informed sources told Arab News. Osama Kurdi, secretary-general of the Council of Saudi Chambers, told Arab News that the council would demand compensation from the parties that caused the losses. The ban on Spanish olive oil was imposed after reports that it was tainted by a carcinogenic substance.