""Salt of the Earth"" is a novel by Peter B. Kyne that was originally published in 1925. The story follows the life of a young man named John Emerson who grows up in poverty but is determined to make something of himself. John is a hard worker and eventually becomes a successful businessman in the salt industry. Along the way, he falls in love with a woman named Mary and they marry and have children. However, John's success attracts the attention...