As if the oil and gas industry didn't already have enough problems on its hands, bombers struck a train in Georgia this week and reawakened memories of the conflict that occurred there just over a year ago."According to preliminary information, TNT was used in the explosion," said Georgian Railway spokeswoman Irma Stepnadze, who confirmed no one was injured in the blast, which damaged 100 m of track and overturned 16 tanker cars.The explosion took place on the rail line between Senaki and Georgia's Black Sea port of Poti, a major center of oil exports. Stepnadze said repair work was under way, but it was unclear when traffic on the line would resume.The cause of the explosion wa...