According to the Senior Explosives Officer of the Mines Division, Mr LEUNG Pak-ming, by suitable selection of time delays for detonators the vibration or noise impacts due to blasting can be brought down to a minimum.
According to the Senior Explosives Officer of the Mines Division, Mr LEUNG Pak-ming, by suitable selection of time delays for detonators the vibration or noise impacts due to blasting can be brought down to a minimum.
According to the Senior Explosives Officer of the Mines Division, Mr LEUNG Pak-ming, by suitable selection of time delays for detonators the vibration or noise impacts due to blasting can be brought down to a minimum.
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