Archer-Daniels-Midland Co. (ADM) s increasing the capacity of a biodiesel plant under construction in North Dakota to 85 million gallons a year, a company spokesman said on Wednesday. ADM originally announced the plant in Velva would produce 50 million gallons of biodiesel a year using canola oil. ADM decided to increase capacity to take advantage of economies of scale, said Greg Webb, vice president of public affairs. [ more ]