This Thursday, Dec. 6, 2012 photo, shows construction workers framing a new home in Pepper Pike, Ohio. Chemical and bioscience company DuPont Co. says weakness in its performance chemic

 

              This Thursday, Dec. 6, 2012 photo, shows construction workers framing a new home in Pepper Pike, Ohio. Chemical and bioscience company DuPont Co. says weakness in its performance chemic
This Thursday, Dec. 6, 2012 photo, shows construction workers framing a new home in Pepper Pike, Ohio. Chemical and bioscience company DuPont Co. says weakness in its performance chemicals and electronics and communications businesses, coupled with costs associated with growth initiatives, led to a sharp drop in fourth-quarter income. (AP Photo/Tony Dejak)