Hi, I'm currently working with a H&S Team and we seem to have come across an obstacle. The company activities involve huge quantities of dust. Although there are engineering controls in place to reduce it does not fully eliminate the risk. The Teams Risk assessment stipulates that all persons entering the area will wear positive flow air feed masks. 

The obstacle we are currently hitting is that is difficult for opertives to communicate between each other, and with yellow plant movements and occassions of poor visability, its vital that operatives are able to communciate.  This is leading to operatives lifting their masks to talk to each other and when tryign to use radios 

Has anyone come across anything on the market to potentially overcome this issue?