The forest products industry has played an important role in the Thunder Bay economy from the 1870s. In the 1880s, Herman Finger established the Pigeon River Lumber Company in the area, and also built the Gunflint and Lake Superior Railroad, but he dissolved the lumber company and moved his operations to The Pas by 1919. Logs and lumber were shipped primarily to the United States. In 1917, the first pulp and paper mill was established in Port Arthur. It was followed by a mill at Fort William, in 1920. Eventually, there were four mills operating.