Present Trends in Oust Sampling and MAC Values in West Germany

Dust samplers are based on different principles. The konimeter is based on the number of particles counted; mining applications are based on routine sampling; and the photometrical evaluation of samples is used after the preseparation of particles above 5 micron by the mining konimeter. In special cases, the Draeger sampler is used for quantitative analysis. General trends are toward larger samples, concentration on a weight basis, fractionation into size groups by different techniques and an analysis of composition.
Keywords: coal mining, Dust and Silicosis Control Centre, quartz, sampler, Silicosis Research Institute, Dust, Filters, Konimeters, mineral, minerals, mining, Research, Value
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