Materials may release (silica particles).Logical formLearned from2 sentences. (Silica hazards) can be in a (highway construction industry).Logical formLearned from2 sentences. (Silica sample results) can be important.Logical formLearned from2 sentences. (Silica exposures) can be elevated.Logical formLearned from2 sentences. Silica may contain dusts.Logical formLearned from2 sentences. Hazards may be associated with (silica exposure).Logical formLearned from2 sentences. Crystalline silica may be generated by grindings.Logical formLearned from2 sentences. Some focus may reduce a severity of exposure to crystalline silica.Logical formLearned from2 sentences. (Silica exposure) may cause silicosis.Logical formLearned from2 sentences. Hazards can be as exposure to silica.Logical formLearned from2 sentences. (Silica hazards) can be in a (concrete industry).Logical formLearned from2 sentences. A majority may show levels of silica.Logical formLearned from2 sentences. Silicosis may be caused by exposure to (silica dust).Logical formLearned from2 sentences. Earth may contain crystalline silica.Logical formLearned from2 sentences. Forms can be constituted-of-or-filled-with crystalline silica.Logical formLearned from2 sentences.