Pneumoconiosis Field Research: Environmental conditions at Lady Victoria Colliery, 1972/73

This report tabulates respirable dust concentrations and compositions at Lady Victoria Colliery for the period April,1972 to March, 1973. Information regarding seams worked, outputs, methods of working, dust suppression and manpower together with the associated dust concentrations is presented in a series of face charts.At Lady Victoria the coalface mean respirable dust concentration was 3.1 mg/m3. The mean ash content of respirable dust was 51.1 per cent and the mean quartz content 11.8 per cent (23 per cent of the ash) representing a concentration of 0.36 mg/m3. Total dust concentrations are tabulated and on average were 8.5 times as high as the respirable concentrations. “”