Blasting　has　been　widely　used　in　mining　and　construction　industries　for　rock　breaking.　This　paper　presents　the　results　of　a　series　of　field　tests　conducted　to　investigate　the　ground　wave　propagation　through　mixed　geological　media.　The　tests　were　conducted　at　a　site　in　the　northwestern　part　of　Singapore　composed　of　residual　soil　and　granitic　rock.　The　field　test　aims　to　provide　measurement　data　to　better　understand　the　stress　wave　propagation　in　soil/rock　and　along　their　interface.　Triaxial　accelerometers　were　used　for　the　free　field　vibration　monitoring.　The　measured　results　are　presented　and　discussed,　and　empirical　formulae　for　predicting　peak　particle　velocity　(PPV)　attenuation　along　the　ground　surface　and　in　soil/rock　were　derived　from　the　measured　data.　Also,　the　ground　vibration　attenuation　across　the　soil-rock　interface　was　carefully　examined,　and　it　was　found　that　the　PPV　of　ground　vibration　was　decreased　by　37.2%　when　it　travels　from　rock　to　soil　in　the　vertical　direction.　(C)　2019　Institute　of　Rock　and　Soil　Mechanics,　Chinese　Academy　of　Sciences.　Production　and　hosting　by　Elsevier　B.V.