A view of the Dupont logo on a sign at the Dupont Chestnut Run Plaza facility near Wilmington, Delaware, in a April 17, 2012 file photo. DuPont reported a steeper-than-expected 3 percent fall in ... more 
A view of the Dupont logo on a sign at the Dupont Chestnut Run Plaza facility near Wilmington, Delaware, in a April 17, 2012 file photo. DuPont reported a steeper-than-expected 3 percent fall in quarterly revenue as its agriculture business sold fewer seeds, herbicides and insecticides. REUTERS/Tim Shaffer/Files (UNITED STATES - Tags: BUSINESS) less 
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Reuters | Photo By TIM SHAFFER / REUTERS
Thu, Apr 17, 2014 8:22 AM EDT