Storing The Nation's Grain - For All Your Storage Needs.. Silos - Gunnedah, NSW . Feature: Man Hole Covers, Spring Loaded Lids. Product: 45 Degree Cones, 60 Degree Cones, Bag Off Shutes, Bins, Mobile Feed Carts, New Silos, Reconditioned Silos, Used Silos. Service: Transportation. Payment Method: Cheques, Direct Debit, EFT, EFTPOS, Money Order