Kathleen Gratz Museum of Northern Arizona No description specified. 1-1 (1 Record) Documents Archaeological Investigations: Salt River Project, Coronado Generating Station, Ash Disposal Pond and Borrow Pits, Northeast of St. Johns, Apache County, Arizona: Final Report for Archaeological and Ethnohistorical Investigations for Drill Hole Locations in the Proposed Ash Disposal Evaporation Pond and Associated Borrow Pit Areas (1975)