Pneumoconiosis Field Research: Environmental conditions at Coventry Colliery, 1969

This report tabulates respirable dust concentrations and compositions for the period December 1968 to March 1970. All the measurements have been made using the M.R.E. gravimetric sampler.The colliery had a coalface mean respirable dust concentration of 5.5 mg/m3. The mean ash content of the respirable dust was 39.1 per cent and the mean quartz 3.1 per cent (concentration 0.17 mg/m3).Information regarding methods of working, outputs and manpower is given and also a description of the sampling strategy using volunteer miners. “”