A local Hong Kong contractor started using DustBubble at their sites to control dust when workers
use electric hammers to drill smallsize holes in concrete walls. DustBubbles (DustBubble Ltd.) are
disposable dust collectors for DIY or industrial drills. They use a combination of adhesion to the wall
and the action of the drill itself to catch virtually all the dust during the drilling process. initialed and funded this research toinvestigate its effectiveness on dust control and assess the viability of using it in Hong Kong.
In order to achieve the above objectives, an experimental study has been designed and conducted to compare the dust exposures between two groups of workers: one group drilling the concrete without the use of DustBubble, the other with DustBubble. Two variables have been analysed and compared:
respirable dust exposure and respirable silica dust exposure.