NTIS: PB/218-060/2 Available for Reference At Bureau Libraries :278 pages
The present sampling procedure for evaluating the rock dusting conditions in a coal mine is time consuming. This study considers means by which this procedure could be simplified. Surveys were conducted in six coal mines in Pennsylvania to determine the incombustible content of the deposited dust. Some 2,000 samples were analyzed and statistically evaluated. It is suggested that the mean incombustible content could be obtained with fewer samples and smaller samples without greatly increasing the sampling error.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/218-060/2; Available for Reference At Bureau Libraries
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