A maverick dairyman named Hein Hettinga started bottling his own milk and selling it for as much as 20 cents a gallon less than the competition, exercising his right to work outside the rigid system that has controlled U.S. milk production for almost 70 years. Soon the effects were rippling through the state, helping to hold down retail prices at supermarkets and warehouse stores. Taking on Big Milk For three years, starting in 2003, a coalition of milk companies and dairies lobbied to crush an initiative by a maverick Arizona dairyman. Hein Hettinga chose to work outside the rigid system...