Bureau of Mines Procedure for Evaluating Quartz Content of Respirable Coal Mine Dust.
NTIS: PB 210 608 :10 pages
The Federal Coal Mine Health and Safety Act of 1969 delegated to the Bureau of Mines a yearly program of health inspections. Respirable coal mine dust concentrations are measured by Bureau inspectors. Samples of respirable coal mine dust are weighed to determine dust concentration and then analyzed for ash and quartz content. This paper describes the laboratory procedure for determining the percent quartz in the respirable coal mine dust samples.
IH; Information Circular;
NTIS Accession No.
NTIS: PB 210 608