NOVELTY - Compacted body (I), comprises first particles comprising a biomass material, and second particles comprising a different material, where the compacted body resists fragmentation.    USE - (I) is useful as animal bedding (claimed). (I) is useful: in power generation (preferably as a fuel supplement or fuel replacement for coal or other fossil fuel(s) in co-firing power plants); as waste absorbent (preferably as cat litter for absorbing liquid and/or solid waste products); as bedding for various animals including fowl, horses, and rabbits; and in landscaping and home heating.    ADVANTAGE - (I): is a mechanically stable combination of particles; is easily separated during processing in an intended application, or resists fragmentation or spalling when handled by conventional feeding, transporting, and conveying apparatus; is typically formed under pressure (e.g. compression or compaction) by for e.g. a pellet mill or a briquette machine, hence it is sterilized product, and has improved storability, relatively constant size of product, dust reduction, improved shelf life, ease of handling and transport, and eliminates settling of materials that make up the product; and has high energy content per volume or mass, low ash production, low sulfur content, and low net carbon generation.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a collection of compacted bodies in a container, where each of the compacted bodies have the composition or properties; and    (2) a method of preparing (I), comprising: processing a biomass feedstock (101) to convert raw feedstock to a form comprising the first particles; and concurrently compacting the first particles and the second particles to produce (I).    DESCRIPTION OF DRAWING(S) - The figure is a schematic diagram depicting an example of a fabrication process for preparing compacted biomass products.    Feedstock (101)    Conveyor (105)    Top hammer mill (107)    Bottom hammer mill (109)    Feedline (111)