Industrial novel King Coal, was one of the writers who consecrated their lives to the agitation for social justice. He showed patriotism as an American by agitating for real liberty, the liberty of humanity, not merely joining in hymns to the very conditional kind of liberty peculiar to the United States. His art was enrolled in the service of a set purpose, exposing the appalling conditions under which wage-earning slaves are living. Sinclair absorbed himself in the study of the miner’s life in the lonesome pits of the Rocky Mountains, bringing to the world an American parallel to GERMINAL, Emile Zola’s technical masterpiece. His book provides a true picture of conditions and events in unorganised labour camps in many parts of America."King Coal" is a social justice fiction that delves into labour exploitation faced by a motley variety of European emigrants speaking a Babel of languages, who are exploited by the anonymous limited Company. The book details the harsh mining camp life, illustrating company town conditions where the company owns everything. It vividly portrays the poverty and injustice endured by miners, including cheating at the scales through weighing coal fraud. A central conflict is the fight for a check weighman to ensure honest weighing. Sinclair also exposes the system of dead work payment, for which miners received no pay.The narrative follows Hal, who takes the name Joe Smith, to get firsthand knowledge. He witnesses a devastating mine explosion and the ensuing mine disaster, revealing the company's disregard for safety laws. The powerful General Fuel Company GFC, controlled by the Coal King Peter Harrigan, maintains order through a camp marshal (Jeff Cotton) and his assistants (Bud Adams, Pete Hanun thug, and others) who use violence and intimidation. The company spotters like Gus monitor the men. The coal operators, such as Superintendent Enos Cartwright and pit-boss Alec Stone, prioritize property over lives. Miners who speak out face blacklist employment.The book highlights the challenges of the unionization struggle among miners, including the United Mine Workers, opposed by the company's force. It describes the miner strike, often born from desperation. Sinclair reveals the depth of corruption, including judicial corruption and ballot fraud, as demonstrated by a Supreme Court decision regarding the Sheriff emperor of Huerfano County. The author's account is based on extensive material, including sworn testimony under government supervision testimony related to the 1913 coal strike in the Colorado coal fields, particularly the Colorado Fuel and Iron Company led by JF Welborn.Hal's efforts to expose the truth involve working with journalists like Billy Keating journalist of the Western City Gazette, understanding the power of public opinion power. Through characters like the resilient Red Mary working class, the experienced Old Mike Sikoria miner, the wise John Edstrom miner, and organizers like Tom Olson and Jim Moylan union, Sinclair illustrates the human cost and the fight for dignity. The novel contrasts the miners' lives with those of privilege, such as Hal's brother Edward Warner brother (son of Edward S Warner) and socialites like Jessie Arthur socialite and Reggie Porter socialite. Sinclair argues against the system of production for profit system, asserting that freedom will not come until it is abolished. This powerful muckraking novel is available as a Project Gutenberg free book. The character Hal Warner is the same as Hal Warner Joe Smith. Other characters mentioned include MacKellar Scotch, the Greek labourer Apostolikas Greek, the Bulgarian miner Wresmak Bulgarian, the Polish miners Klowoski Polish and Zamierowski Polish, the Irish miner Tim Rafferty Irish (son of Old Rafferty), the Swedish miner Johannson Swedish, and the superintendent Enos Cartwright.