Get current pricing for Richmond Engineering, Richmond Engineering-11711-ID (6) Rail Loading Silos. Size 12' Diameter X 70' Straight Side, 78' Oal, Approx. 7900 Cu Ft. Rated 50 Lbs/cu.ft. Epoxy Coated. Complete With Dust Colle . Product Category: Process Equipment, Sub Category: Process Miscellaneous: