Concerning to the blasting explosion making use of the case of construct the tunnel, the dumm. the neighbourhood makes complaint many diffrent opinion about low frequency noise including audio frequency area. It is known that these complaint occurs particulaly depending on rattling of the fixtures or the rattling of a certain window glass into the house . On account of control or countermeasure low frequency noise caused by these rattling, We had reported to the result of M-sequence blasting explosion system on tunnel in Environmental System Research Vol.18 1990.This paper shows the result of field measurement on bench cut making use of Ordinaly blasting and M-sequence blasting.
