A VHS-format video relating the history of salt and demonstrates salt production: mining rock salt, solar evaporation and evaporation plants. Explores principal and varied uses of salt and how this mineral affects almost every aspect of our lives. It is combined with Trace Mineral Salt: It Doesn't Cost; It Pays which highlights salt's importance in animal nutrition. This video works well in conjunction with Salt, the essence of life - Interdisciplinary Curriculum for High School Students (see above).