George L. Coleman Sr. and the Tri-State mining fortune
George L. Coleman Sr. arrived in the Miami area in the early 1900s as the lead and zinc mining boom in the Tri-State district was accelerating. The district — a cross-border zone of northeastern Oklahoma, southwestern Missouri, and southeastern Kansas — sat on top of one of the richest shallow lead-zinc ore bodies in North America. Through the 1910s and 1920s the Tri-State operations produced an enormous share of the lead and zinc consumed by American industry, and the district produced more than 50 percent of the United States' lead and zinc output during World War II. Coleman built his fortune as one of the major operators in the district, with mines and milling operations across the Miami-Picher area.
By the late 1920s Coleman was one of the wealthiest men in northeastern Oklahoma and a substantial civic figure in Miami. The theatre commission was conceived as a community gift rather than a primarily commercial venture — Coleman wanted to give Miami a cultural institution proportionate to the wealth that the mining boom had brought to the region. The decision to hire the Boller Brothers of Kansas City and to build at the $600,000 scale was deliberate: a small-town movie palace of substantial architectural quality, not a typical regional vaudeville house.
Coleman's mining fortune did not survive intact through the mid-20th century. The Tri-State mining district declined after World War II as the most accessible ore bodies were exhausted and lower-cost foreign sources captured the global lead-zinc market. Picher, Oklahoma — the largest mining town in the district — was eventually evacuated and declared an EPA Superfund site because of catastrophic environmental contamination from the abandoned mines. Miami itself fared better but the broader regional mining economy did not return. The Coleman Theatre stands as the most durable physical legacy of the Tri-State boom era.