One problem encountered by the Silver King Mining Company was the transportation of its ore over the rough terrain between the mine and the railhead in Park City. The solution was a 7,000' long aerial tramway, completed in 1901, which connected the mine with an ore-loading station or tipple 1,000' below. Railroad ore cars moved through the tipple and were loaded mechanically. This tramway and tipple system, while by no means unique, reveals the degree of mechanization achieved in early 20th century mining facilities.
GR is for Park Avenue, Park City.