The Tri-State Mining District: how Miami got built
The Tri-State Mining District — the cross-border zone of northeastern Oklahoma, southwestern Missouri, and southeastern Kansas — sat on top of one of the richest shallow lead and zinc ore bodies in North America. From roughly 1900 through World War II, the district produced an enormous share of the lead and zinc consumed by American industry, including the metals used in the artillery shells and machine guns that the United States manufactured for both World Wars. The Dobson Museum's main historical exhibit is the story of how the mining boom built Miami — the Coleman Theatre fortune, the substantial downtown commercial district, the early-20th-century railroad infrastructure, and the population growth that made Miami one of the larger towns in northeast Oklahoma by the 1920s.
Exhibits include period photographs of the mines and mills, geological samples of the ore that came out of the district, mining tools and equipment, miners' personal effects donated by Miami-area families, and detailed wall text covering the economics, the labor conditions, and the eventual decline of the district. The exhibit makes clear that the wealth produced by the boom was unevenly distributed — the mine operators and mill owners (including the Coleman family) built substantial fortunes; the immigrant miners who actually extracted the ore worked in conditions that produced widespread silicosis and lead poisoning across multiple generations.
The story extends into the postwar decline of the district, the exhaustion of the most accessible ore bodies, the gradual abandonment of the mines, and the catastrophic environmental legacy that produced the Tar Creek Superfund site and the eventual federal buyout of Picher 15 miles north. For travelers planning to drive through Picher as part of their Route 66 itinerary, the Dobson Museum's mining exhibit is the essential primer that makes the ghost town legible.
