Jun 04, 2010· Dry milling provides a variety of ingredients for use in food products, but the heterogeneous nature of the dry-milled products makes it difficult to find new markets. Maize dry milling in the USA only grew at an annual rate of ∼ 1.5% per year during the last several decades, from 2.9 × 10 6 t in 1960 to 3.5 × 10 6 t in 1998.