Pneumoconiosis Field Research: Environmental conditions at Oakdale Colliery 1976/77

Respirable dust concentrations and compositions at Oakdale Colliery are tabulated for the period April 1976 to March 1977. Information regarding seams worked, outputs, method of working, dust suppression and manpower, together with the associated dust concentrations is presented in a series of face charts.Total dust concentrations are also given and on average were fourteen times as high as the respirable dust concentrations.The sampling of nitrous fume is described and the results obtained noted. At Oakdale Colliery the mean coalface respirable dust concentration was 2.7 mg/m3. The mean ash content of the respirable dust samples was 28.1 per cent and the mean quartz content was 3.3 per cent (representing a quartz concentration of 0.09 mg/m3). “”