%0 Journal Article %T Express Assessment of Coal Quality using Domestic X-ray Spectral Analyzer %A Kudryashov, V.I. %A Moroz, A.P. %A Serebryakov, A.S. %A Mashovets, Y.I. %K сoal quality, ash content, at-line analysis, X-ray fluorescence %J NDT World %D 2019 %N 22 %P 2 %I LLC SVEN