NOVELTY - A biomass bearing material treatment vessel (10), comprises reaction vessel (12); a drive mechanism for causing rotation of the vessel; support track and wheel; at least one access opening (52); a door assembly for closing access opening; a door sealing system, configured so that access opening door assembly can be positioned adjacent to access opening, and can seal the door to access opening; at least one flight of auger vane (36) for moving biomass bearing material; and sparging lines in vessel for injecting steam into vessel.    USE - For treating biomass bearing material useful for making feedstock material for fiber and cellulose processes (claimed), and for treating biomass bearing material e.g. municipal solid waste (MSW) such as sewer sludge, industrial bearing material, industrial byproducts, agricultural waste and byproducts, food processing waste and byproducts, and other source; for removing labels from containers, fracturing glass for possible later separation from the waste stream, compacting and agglomerating plastics, and compacting ferrous and non-ferrous materials; and for producing gas useful as a substitute for natural gas.    ADVANTAGE - The vessel results in a product with fairly low moisture content; provides a sterilization effect upon the biomass bearing material; and imparts a chemical change to the biomass bearing material. The vessel imparts beneficial handling, flow, and chemical characteristics to the product of processing in the reaction vessel, which thus converts the biomass from a waste into a feedstock for subsequent processes. Because of an increased surface area and homogenous sizing caused by the action of the process, the feedstock is effective for use in gasification.    DETAILED DESCRIPTION - A biomass bearing material treatment vessel (10), comprises cylindrical reaction vessel (12) with a first end (24) and a second end (22); a drive mechanism for causing rotation of the reaction vessel; at least one support track and wheel to support the reaction vessel as it rotates; at least one access opening (52) in the reaction vessel, through which biomass bearing material can enter and/or exit the reaction vessel; a door assembly for closing the access opening; a door sealing system, configured so that the access opening door assembly can be positioned adjacent to access opening, and can seal the door to access opening; at least one flight of auger vane (36) on the interior wall of reaction vessel, for moving biomass bearing material from first end to second end of reaction vessel, and from second end to first end of reaction vessel, with the auger vanes having a base edge attached to an interior vessel wall, and a top edge, with top edges of auger vanes defining a bore parallel the long axis of the reaction vessel, where bore has a diameter measuring approximately one third of the diameter of the reaction vessel at a corresponding point; and sparging lines in vessel for injecting steam into vessel. The reaction vessel is configured for rotation and held at an angle of approximately 6% from horizontal. The vessel further includes a swing away door assembly containing a swing away access opening door; and a davit assembly for supporting swing away door. An INDEPENDENT CLAIM is included for making a feedstock material made involving adding biomass bearing material to a reaction vessel held at an angle from horizontal and configured for rotation; injecting steam via sparging lines into reaction vessel to add heat and pressure up to 55 pounds to interior of the vessel; rotating vessel as biomass bearing material is subjected to heat and pressure; removing biomass bearing material that has undergone chemical and physical change and has been converted to a feedstock for fiber and cellulose processes.    DESCRIPTION OF DRAWING(S) - The figure shows an elevation view of the reaction vessel.    biomass bearing material treatment vessel (10)    reaction vessel (12)    first end of vessel (22)    second end of vessel (24)    flight of auger vane (30)    access opening (52)    gear ring (76)    drive gear. (78)