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WhatsApp: +86 18203695377WEBThe estimated free silica content of dust was % for unfired materials at the powder collectors (n = 8 samples), and % in the brickcleaning area following firing (n = 1 sample). Burgess (1998) investigated processes associated with occupational exposure to respirable crystalline silica in the British pottery industry during 1930–1995 ...
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WhatsApp: +86 18203695377WEBMar 8, 2021 · Respirable coal mine dust (RCMD) particles, particularly the nanosized fraction (<1 μm) of the RCMD if present, can cause severe lung diseases in coal miners. Characterization of both the particle size and chemical composition of such RCMD particles remains a work in progress, in particular, with respect to the nanosized fraction of .
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