Barber Greene Portable DM-66 PF Drum Plant RAP-16351. used. Manufacturer: Barber Greene. Description Portable tri axle 1984-85 Barber Greene DM66 8'x40' drum mixer with RAP collar Portable tandem axle frame with scale conveyor Portable 1985 Barber Greene 4-Bin Cold Feed with collector Barber Greene V... Shelbyville, KY, USA.