U.S. oil exports are set to surpass a record held since 1957 as traders find ways around a four-decade ban on supplies leaving the country. The U.S. sent 401,000 barrels a day abroad in July, 54,000 shy of the record set in March 1957, according to data compiled by the Energy Information Administration, the Energy Department’s statistical unit. While Canada accounted for 93 percent of the shipments, Italy , Singapore and Switzerland also took oil from U.S. ports. Coupled with Alaskan supplies bound for Asia , total U.S. exports will reach 1 million barrels a day by the middle of 2015, according to Shipments abroad have quadrupled from a year ago as U.S. drillers pull record volumes of crude and natural gas out of shale formations across the middle of the country using hydraulic fracturing and horizontal drilling. Exemptions to a federal ban on crude exports allow for deliveries […]