Copdock Mill — Quality Since 1912. Copdock Mill was founded in 1912, starting life as a country mill. Whole Wheat, White Millet, Red Millet, Cut Maize, Whole Barley, Black Sunflower Seeds, Naked Oats, Black Rape Seed, Safflower, Canary Seed, Hemp Seed, Linseed Seed, Nyjer Seed, Soya Bean Oil.