What year did the company, who operated Slick Mine No. 91 after 1923, begin operations?
Slickville Historic District Slickville Historic District is a national historic district located at Salem Township, Westmoreland County, Pennsylvania. It encompasses 90 contributing buildings and 1 contributing structure in the unincorporated village of Slickville. The company built mining town was built between 1916 and 1923. The contributing resources include workers and managers housing, four utilitarian mine-related buildings, a church, a school, a pump house, and a company store. The community was originally developed by the Cambria Steel Company, and later acquired by Bethlehem Steel who operated Slick Mine No. 91 after 1923.
Minneapolis, Northfield and Southern Railway The Minneapolis, Northfield and Southern Railway (reporting mark MNS) was an 87 mi American short line railroad connecting Minneapolis and Northfield, Minnesota. It was incorporated in 1918 to take over the trackage of the former Minneapolis, St. Paul, Rochester and Dubuque Electric Traction Company, also known as the Dan Patch Lines. On 2 June 1982 it was acquired by the Soo Line Railroad, which operated it as a separate railroad until merging it on January 1, 1986.