UPDATE 1-Union Pacific CEO says 2016 freight volumes could drop 6-8 pct

CHICAGO, July 21 (Reuters) - Full-year 2016 freight volumes

at Union Pacific Corp could fall between 6 percent and 8

percent from 2015, driven by declining coal volumes, weak shale

oil business and the strong U.S. dollar, the company's top

executive said on Thursday.

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