A storage tower, also known as a SILO, is a tall cylindrical structure used to store large amounts of material such as grain, coal, cement, wood chips, and other materials. It is typically made of metal or concrete and is designed to withstand the elements. The term 'SILO' comes from the Greek word for 'PIT, ' which is an appropriate description for this type of structure. Storage towers are often used in agricultural settings to store grain and other materials, but they can also be used in industrial settings to store hazardous materials.