Silos are structures for storing bulk materials. It is used in agriculture to store grain or fermented feeds know as silage. It is more commonly used for bulk storage of grain, coal, cement, carbon black, wood chips, and sawdust. Three types of silos are in use such as tower silos, bunker silos and bag silos.
Silt fencing provides a system of sediment control similar to bale barriers. The fencing material can be made of burlap or geotechnical fabric that is supported by wire stays fastened to posts. It is installed around a construction site as an erosion control measure. When the construction is complete, the silt fencing is removed.