Archive: https://archive.today/dKJ1O From the post: >>The state announced Thursday the completion of a nearly year-long effort to extinguish a burning pile of century-old coal mining debris near Florence. The pile of rock, dirt and low-quality coal began slowly burning two decades ago, according to the Colorado Division of Reclamation, Mining and Safety (DRMS). The fire ignited by spontaneous combustion. In May 2025, the agency measured temperatures above 300 degrees Fahrenheit inside the roughly 35-foot tall, 150-foot wide, and 300-foot long pile. Temperatures had previously stayed in the 100-200 degree range, according to an DRMS press release.