The study aims to find the geotechnical properties and engineering geological evaluation of sandston rocks which belong to Injana Formation  ̸ Ketol area ̸ Sulymania  Governorate/formation L belong to Injana  ̸ and make a comparison with Iraqi standard and American society for testing and material (ASTM) specifications. In order to determine their Suitability for building purpose and rail way ballast stone by detailed geological survey of sandstone rocks and laboratory tests (6) station in  addition chemical analysis and mineral components. Petro physical test such as (Absorption, density) and Mechanical tests such as (Unconfined compressive strength, Flexural strength, Abrasion resistance) show these rocks are suitable as building stone according to (ASTM,C-568-99,2004).and suitable as rail way ballast stone according to Iraqi specifications (Raymond,1979) (O.R.B.D,1999).