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The Effect of Depth of Cut and Bit Type on the Generation of Respirable Dust.
NTIS: PB 243 683 :16 pages
Laboratory tests were conducted by the Bureau of Mines to determine the effect of depth of cut and bit type on respirable coal dust generation. Apparatuses were constructed to contain the coal samples, measure the linear cutting forces, and analyze the dust generated. Single-bit tests were conducted in Illinois No. 5 And Pittsburgh seam coals with five bit types at four depths of cut. The results showed that bit type did not significantly influence dust production. On the other hand, deep-cutting bits were more efficient and generated substantially less respirable dust per pound of coal broken than shallow-cutting bits.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 243 683
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division