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Counting oil flow can be a crude science
But competing analysis of that data often results in different outcomes
Add BT as a preferred sourcePublished Fri, Mar 4, 2016 · 09:50 PM
London
JUDGING the supply of the world's most important commodity often comes down to a good set of binoculars.
In a world of Twitter, iPhones and instant information, determining how much oil is pumped by global producers is a moving target.
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