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MAP20071023615Quartz exposure levels in the underground and surface coal mining industry / S.M. Ainsworth... [et al.]Sumario: Occupational quartz exposure data gathered from the Mine Safety and Health Administration's respirable dust enforcement program and a program to monitor quartz exposure in several mining occupations were compiled and analyzed to assess the status of quartz exposures in the coal mining industryEn: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 56, nº 10, October 1995 ; p. 1002-10071. Higiene industrial. 2. Minería. 3. Carbón. 4. Cuarzo. 5. Valores TLV. I. Ainsworth, S.M.. II. Título. III. Título: American Industrial Hygiene Association journal.