To keep the thousands of oil field workers from clogging the one artery to the oil sands, 500 buses run in a continuous loop from Fort McMurray to the oil fields.

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One is sending down devices to try to better understand where a current in the Gulf known as the Loop Current might take the oil.

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In the short run, there appears to be little risk the Loop Current will carry the oil around South Florida and up the East Coast, National Oceanic and Atmospheric Administration officials said.

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On the other hand, the oil spill in the Gulf Of Mexico has knocked prices for a loop on many stocks that have no liability there, based solely on the premise that the six month freeze on deepwater drilling will hurt the sector.

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Thus, there should not be any shortages in refined oil products such as gasoline from this incident (especially as long as the LOOP remains operational).

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The oil trajectory that actually occurs will depend critically both on the short-term evolution of the Loop Current, which feeds into the Gulf Stream, and on the state of the overlying atmosphere.

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