The plant eventually became the railroad's biggest customer and the line was purchased outright in 1939 by Singer. In 1927, the Appalachian Lumber Company built a network of logging lines in the upper portion of Pickens County.
As the plant expanded, it became the railroad's primary client, and by 1939, Singer purchased the entire line. Before that, in 1927, the Appalachian Lumber Company established a system of logging roads in the northern part of Pickens County.