PneumoconiosisCoal MiningAnthracosisCotton FiberGossypiumCoalMiningDustSilicosisDental TechniciansX-Ray FilmCaplan SyndromeAsbestosisTalcOccupational ExposureQuartzKaolinWorkers' CompensationSilicon DioxidePolyvinyl ChlorideLungRadiography, ThoracicOccupational DiseasesMaximum Allowable ConcentrationSigmodontinaeSiderosisMass Chest X-RayNational Institute for Occupational Safety and Health (U.S.)WeldingVital CapacityPulmonary FibrosisByssinosisMetallurgyAsbestosAir Pollutants, OccupationalAppalachian RegionRespiration DisordersAluminum SilicatesBronchitisRheumatoid NoduleTextile IndustryForced Expiratory VolumeLaboratories, DentalPolyvinyls