An educational relic, This is the Dairy Industry takes viewers on a stroll through milk and dairy products production in the 1950s. Some amazing statistics are also thrown out: itâs alleged that 30% of the American diet is based on milk products. The rows upon rows of machines and masses of workers who control them demonstrate butter churning on an industrial scale. As an enriching addition to facts and information about the dairy industry, the lifestyle of the middle class and mainstream American is also beautifully represented. This is the Dairy Industry is a wonderful walk through the milk plant and 1950âs culture.