Grain Dust : Grain dust is a complex mixture of fragments of organic material from grain, plus possible fungal, bacterial or insect contamination or their toxic products such as endotoxin and mineral matter from soil
Sally Spankie & John W Cherrie, Institute of Occupational Medicine, Current Control Standards for Tasks with High Exposure to Grain Dust: Prepared for the HSE, Glossary, Edinburgh, UK 2010. ISBN 0 7176 0642 2, http://www.hse.gov.uk/research/rrpdf/rr829.pdf, (Hlth and Sfty - Brit) {726}