A report by a lobby group for oil refiners finds that Bakken crude is technically permissible to ship under current regulations. Craig Paradis (L) of Advance Drilling, operates the brake handle on a drilling rig for Crescent Point Energy as two roughnecks add a pipe extension to drill deeper into the Bakken formation near Oungre, Saskatchewan in this June 20, 2012 file photo. Shipping crude across North America in railway cars might seem a quaint throwback to the oil pioneering days of the West, but it's a booming business for North America's railroads, and likely to remain an important niche market for years to come after surging from a dribble in 2008 to close to 500,000 barrels per day in September. To Match Analysis RAILWAYS-OIL/NORTHAMERICA REUTERS/Rod Nickel/Files (CANADA - Tags: TRANSPORT BUSINESS COMMODITIES ENERGY) (STAFF/Reuters)
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