Eastern coal railroads issued maps of coal mines they served for the information of customers. This map (redrawn for clarity) shows C&O’s New River and Kanawha (Ka-NAW) Districts in 1966. their common border marks the divide between high and low volatile coal measures, an important distinction that determines whether coal is used to make coke for steel mills, or to generate electricity.
Railroads included in this map:
Chesapeake & Ohio