title: [Study on quantitative analysis of free silica content in sample dust made by established specific gravity].
authors.affiliation: Department of Mineral Resources Engineering, Waseda University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nagoya
authors.forename: H
authors.initials: H
authors.lastname: Miyake
mesh_terms: D004391:Dust / Q000032:analysis*; D010316:Particle Size; D012822:Silicon Dioxide / Q000032:analysis*; D013046:Specific Gravity
chemical_list: D004391:Dust; D012822:Silicon Dioxide