In the mid-19th century, as St. Louis experienced rapid industrialization and urban growth, coal emerged as a primary source of energy for the city's expanding industries. Coal mines were established in the surrounding regions of eastern Missouri and southern Illinois, providing a steady supply of coal to fuel St. Louis's factories, foundries, and steam-powered machinery.

The availability of coal also facilitated the growth of the city's transportation network. Coal was transported by railroads and barges along the Mississippi River, connecting St. Louis to coal-producing regions in the Midwest and beyond. The development of the city's extensive railroad infrastructure, including the construction of major rail yards and terminals, further facilitated the transportation of coal and other goods.

Additionally, coal played a role in the operation of steamboats, which were a vital mode of transportation and commerce along the Mississippi River. Steam-powered paddlewheel boats relied on coal-fired boilers to generate steam and propel the vessels upstream and downstream.

However, as the 20th century progressed, the use of coal in St. Louis began to decline due to shifts in energy consumption patterns, technological advancements, and environmental concerns. The city transitioned to alternative sources of energy, such as natural gas and electricity, and coal mining in the region decreased.

Today, while coal mining and usage have diminished in St. Louis and the surrounding area, the city's coal heritage is still evident in its industrial infrastructure, historical sites, and cultural heritage. Efforts to address environmental challenges continue, with a focus on promoting cleaner energy sources and sustainable development.