Pneumoconiosis Field Research: Environmental conditions at Coventry Colliery,1971

This report tabulates respirable dust concentrations and compositions at Coventry Colliery for the period April, 1971 to March, 1972. Information regarding methods of working, oujjputs and manpower is also given.The colliery had a coalface mean respirable dust concentration of 3.6 mg/m3. The mean ash content of the respirable dust was 34.7 per cent and the mean quartz content 2.7 per cent (concentration 0.10 mg/m3).Total dust concentrations are tabulated and, on average, were eight times as high as the respirable dust concentrations. “”