Light sweet crude oil for July delivery dropped $1.15 cents to $69.67 a barrel and July Brent crude futures on London''s ICE Futures exchange lost 28 cents to $68.91 a barrel. Gold bullion started trading Thursday at a bid price of $621.85 a troy ounce, higher than $621.25 late Wednesday. The dollar rose slightly against the euro. In morning European trading, the euro purchased $1.2772, down from $1.2794 in New York on Thursday. The British pound eased to $1.8549 from $1.8560 in New York, while the dollar advanced to buy 113.76 Japanese yen from 113.46 yen the day before.