Segregate workers from the dust source

In some cases, simply using water to suppress dust is not enough. It could even increase the risks, for example, with electrical machinery. In these cases, the best approach is to segregate the dust source from the worker. 

• The large slate cutting machine in this photograph is using water to suppress the dust. The operator is also controlling it from a separate control booth.
• This helps to keep the exposure to dust low.
• Don't forget that the control room should be supplied with clean, fresh air. Otherwise, there is a chance that the dusty air from the machine room will get in.
• One way of doing this is by keeping the air in the control room at slightly higher pressure than outside. This means the air tends to flow out and not in.