I run a 30 bbl Spec Mech with a bottom manway, with rake that has a drop down plow. We fill two plastic forklift able totes per batch. We had to cut off a lower spacer bar between two of the mash tun legs to be able to slide them in. A farmer brings them, he has about 8 that he rotates in and out of the brewery. He picks them up the day of the brew, it works great, we are happy to be rid of the spent grain and he blends it in with feed.
CBO "Chief Brewing Officer" / Zymurgist
Bluegrass Brewing Co
636 East Main St