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Section: ArticlesTitle: Determination of program protection factors for half-mask respirators used at a mineral sands separation plant / Gregory S. Hewson, Martin I. RalphAuthor: Hewson, Gregory S.Notes: Sumario: The principal objective of this study was to determine the minimum protection factor that could be applied to the annual average ambient airborne radioactivity concentration for a separation plant worker following periods of intermittent respiratory protective equipment (RPE) usage. The study was designed to measure the program protection factor of the half-mask filter cartridge respirators used in the plantRelated records: En: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 53, nº 11, November 1992 ; p. 713-720Materia / lugar / evento: Higiene industrialEquipos respiratoriosMascarillas autofiltrantesMáscarasEquipos de protección individualPolvoRadiacionesRadiactividadOtros autores: Ralph, Martin I. Secondary titles: Título: American Industrial Hygiene Association journal Other categories: 872Rights: In Copyright (InC)