Bettina Rosenberg Salt River Project No description specified. 1-1 (1 Record) Documents Archaeological Investigations: Salt River Project Silverking Substation and Microwave Repeater Station Survey, Tonto National Forest, Pinal County, Arizona: Final Report for an Archaeological Survey of the Silverking Substation and an Associated Microwave Repeater Station, Tonto National Forest, Pinal County, Arizona (1978)