Moroccan refinery's debts highlight oil sector lending dangers

By Libby George LONDON (Reuters) - When Morocco's only oil refinery suspended production in early August due to financial difficulties, it owed $450 million to trading houses, including Glencore, Vitol and BB Energy, according to traders and refinery sources familiar with the situation. While the amount is relatively small compared with the balance sheets of large trading houses, it underscores simmering trouble in high-risk, high-margin developing regions that did not insure themselves against