Upton Sinclair is best known for writing "The Jungle" -- a novel that exposes the practices of the meat packing industry that lead to governmental investigations and changed food laws in America.

"King Coal" is based on the 1914 and 1915 coal strikes and follows Hal Warner, a rich man who wanted a look into commoners' lives. What he found there was abhorrent -- thus begins the tale of unionization and the advocacy workers' rights. Unionization, however, is easier spoken of than it is accomplished. It was a dangerous task -- for the leaders of the coal mines were hardened men, men who would not stop at petty threats and minor violence.