BDM 80 TON, Portable 80 Ton BDM Silo Package Inventory #: SIL1703 Make: BDM Size: 80 Ton Portable 80 Ton Portable Silo with 5 Ton Weigh Hopper Low tonnage units placed in service in 1994. Relined slat conveyor floor and replaced sprockets just prior to being replaced with larger silo system.