there is some pics of silage towers on my work topic mate i shall be working on three in southampton later this week mate ,and we still errect them permastore ones that is , the grain towers you do not need to dry the corn for them if you are going to feed it to animals it rolls out better moist for the feed , the silage towers are around 25ft diameter around 80,to 100ft tall hold around 450 to600 ton of silage if the silage is made in the right condition it is lovely stuff will be better than clamp silage any day , we service around twenty silos and unloaders but some of them are not used in farming well they are i suppose the end of the line thou meat and bone are stored in some