U. S. corn oil production has doubled in the past 15 years, rising from 223 million pounds in 1951-52 to a record 460 million anticipated in 1965-66. The steady growth in wet-process grindings of corn for starch has resulted in increased output of by-product corn oil. Domestic use of corn oil continues mainly as a salad and cooking oil. But since 1958, margarine manufacture as an outlet has expanded sharply and now accounts for over one-third the total domestic use of corn oil.