<prompt> Snow-storm appearance are seen in:AnthracosisSilicosisByssinosisBagassis  <response>: Silicosis: Ref 711-Park 20th1. SILICOSIS: X-ray chest shows snow-storm appearance in the lung fields silicosis is progressive and what is more important is that silicosis are prone to pulmonary tuberculosis Silicotuberculosis2. Anthracosis: Coal minor pneumoconiosis - leads to development of progressive massive fibrosis PMF3. Byssinosis: Inhalation of cotton fibres.Bagassis: inhalation of bagasse or sugar cane dust 