Frontline is raised to 'buy' Royal Gazette Staff Created: Jan 12, 2010 10:00 AM LONDON (Bloomberg) - Frontline Ltd., Overseas Shipholding Group and Nordic American Tanker Shipping Ltd. were raised to "buy" by Jefferies & Co. Related Stories Insurance M&A activity may be on horizon Teenager launches vegetable-garden business Institute of Directors launch new website Meritus Trust acquires Lepercq Related Media