The Monarch Cement Co. engages in the management of quarries, which contains raw materials used by the company's cement operations. It operates through the Cement Business and Ready-Mixed Concrete Business segments. The Cement Business segment manufactures and sells cement. The Ready-Mixed Concrete Business segment includes precast concrete construction, which involves short-term and long-term contracts for specific projects. The company was founded in 1908 and is headquartered in Humboldt, KS.