Environmental conditions at Coventry Colliery, 1968

This report tabulates respirable dust concentrations in mg/m for the period April – November 1968 at Coventry Colliery, and is the first report in which all dust measurements have been made using the M.R.E. Gravimetric Dust Sampler only.Information regarding methods of working, outputs and manpower is given. For each face occupation, the concentrations of the respirable dust, together with the ash and quartz concentrations for each face site, are listed.Coventry Colliery, a mechanised colliery, had a coalface (all shifts) mean respirable dust concentration of 4.2 mg/m3. The ash content of the respirable dust was 39.4 per cent and the mean quartz content was 3.2 per cent (concentration, 0.13 mg/m3).