The Traer Coal Mine is located in Traer, Iowa, and was an important source of coal during the late 19th and early 20th centuries. It played a significant role in the local economy, providing jobs and energy for the surrounding communities. The mine was known for its high-quality coal, which was used for heating and powering various industries. Operations at the Traer Coal Mine began in the 1870s and continued until the mid-1900s. As mining technology advanced, the mine expanded, and its production increased. Eventually, the decline in coal demand and the rise of alternative energy sources led to its closure, marking the end of an era for the region.