<prompt> Farmers lung result from exposure toAspergillusThermophilic actinomycetesCotton dustSilica  <response>: B Thermophilic actinomycetes FARMERS LUNG is due to the inhalation of mouldy hay or grain dust. In grain dust or hay with a moisture content of over 30 per cent bacteria and fungi grow rapidly, causing a rise of temperature to 40 to 50deg C.This heat encourages the growth of thermophilic actinomycetes, of which Micropolyspora faerti is the main cause of farmers lung. OTHER FORMS OF PNEUMOCONIOSIS: Coalworkers pneumoconiosis also known as miners lung, black lung or anthracosis -- coal, carbon Asbestosis -- asbestos Silicosis also known as grinders disease or Potters rot, or when related to silica inhaled from the ash of an erupting volcano, Pneu-mono ultramicroscopic silico-volcanoconiosis -- crystalline silica dust Bauxite fibrosis -- Bauxite Berylliosis--Beryllium Siderosis--Iron Byssinosis -- Cotton Silicosiderosis -- mixed dust containing silica and iron Labrador lung found in miners in Labrador, Canada -- mixed dust containing iron, silica and anthophyllite, a type of asbestos Stannosis -- Tin oxide 