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Arkansas Oil Spill Raises Scrutiny of Pipeline Network

Bloomberg: An oil spill that fouled an Arkansas town is raising questions about the U.S. pipeline network and the safety of importing Canadian heavy crude, as President Barack Obama weighs whether to approve the Keystone XL project. Environmental groups said the rupture of the Exxon Mobil Corp. (XOM) pipe on March 29 in Mayflower, Arkansas, shows why Obama should reject Keystone, which would be a major new conduit between the U.S. and Canada for a type of fuel critics say is more corrosive than more conventional...