Pneumoconiosis Field Research: Environmental conditions at Linby Colliery, 1971

This report tabulates dust concentrations and compositions at Linby Colliery for the period April, 1971 to March, 1972. Information regarding, methods of working, outputs and manpower is also given.The, colliery had a coalface mean respirable dust concentration of 5.1 mg/m3. The mean ash content of the respirable dust was 60.2 per cent and the mean quartz content 8.2 per cent (concentration 0.42 mg/m3).Total dust concentrations are also given and, on average, were six times as high as respirable concentrations.