Information was provided in this document to aid in protecting workers in grain elevators and feed mills from hazards encountered in these jobs. A description was included of grain elevators and feed mills along with statistical data correlating accidents with the population at risk. Attention was given to specific hazards associated with combustible dust as well as other hazards. The explosive properties of common dusts found in granaries were listed. Possible ignition sources are identified. Guidelines were included for training, use of personal protective equipment (including head, eye, face, respiratory, fall, hearing, foot, and hand protection), control of combustible dust, control of ignition sources, emergency planning, bin entry, isolation and lockouts, machine guarding, safe use of equipment and tools (including bucket elevators, electrical equipment, manlifts, hand and portable power tools, industrial trucks, ladders and scaffolds, compressed gas equipment, hoisting equipment, portable fire extinguishers, standpipes and hoses, automatic sprinklers, hydrants, explosion suppression, and fire fighting operations), and other work practices which will reduce the hazard level. A review was included of existing national and international standards and needs for further research were cited.