Sasco is a ghost town located in Pinal County, Arizona, west of Red Rock. Sasco, which is an acronym for the Southern Arizona Smelter Company, was a company town with a large smelter that served several mines. Once an impressive and little-known ghost town, today Sasco is a common sporting destination with shotgun shells, airsoft bb's, paintball splatter, and litter in the area.

Silver Bell is a ghost town in the Silver Bell Mountains in Pima County, Arizona, United States. The name "Silver Bell" refers to a more recent ghost town, which was established in 1954 and abandoned in 1984. The original town, established in 1904, was named "Silverbell" and abandoned in the early 1930s. Both towns were utilized and later abandoned due to the mining of copper in the area.