A (silica glass) can be fused.Logical formLearned from11 sentences. Biogenic silica may undergo a dissolution.Logical formLearned from11 sentences. (Silica dust) may undergo an inhalation.Logical formLearned from11 sentences. A silica can be airborne.Logical formLearned from10 sentences. A mixture can be constituted-of-or-filled-with silica.Logical formLearned from10 sentences. A silica can be solid.Logical formLearned from9 sentences. Occupational exposure can be to (silica dust).Logical formLearned from9 sentences. Dust may contain crystalline silica.Logical formLearned from9 sentences. A fused silica can be synthetic.Logical formLearned from9 sentences. (Silica fume) may undergo a use.Logical formLearned from9 sentences. Silica may be based.Logical formLearned from9 sentences. Deposits can be constituted-of-or-filled-with silica.Logical formLearned from8 sentences. (Silica fume) may undergo an addition.Logical formLearned from8 sentences. A (classification system) may compare an amount of elements to an amount of silica.Logical formLearned from8 sentences. Exposures can be to crystalline silica.Logical formLearned from8 sentences.