volume 3, issue 5, P511-514 1967
DOI: 10.1007/bf02497948
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Abstract: I have attempted to establish the relation between the dust factor and the marks, macro-petrographic composition [1][2][3][4], and moisture content [5,6] of the coals, the seam thickness, the angle of dip, and so forth. I suggest empirical formulas which give the dustiness of the air as a function of the composition [2], hardness [7], and wetness of the coal and the yield of volatiles [1]. According to dam from MakNH (the Mal~evka Mining Imtimte) [2], an increase of volatiles yield from 0-10 to 10-20@o, othe…

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