DuPont Industrial Biosciences is working on two second-generation biofuel projects it believes it can commercialize, said Jan Koninckx, global director of biofuels. The company's corn-stover facility in Nevada, Iowa, which broke ground in November, will gather stover from up to 40 miles away, provided by about 100 farmers under contract. DuPont also has high hope for its Butamax Advanced Biofuels joint venture with BP, which will be the first such to produce isobutanol from corn using a genetically modified yeast, Koninckx said.