The crushing shredder may convert lumber by-products into fine compost, turning timber and vegetable waste into fibres in a single pass, and using crushing (2,3,5) and shredding (4,9) rotors in separate housings (15,16) on a common drive shaft (1). Incoming material is first treated by the crushing rotor and may be transferred into the shredding rotor housing via a helical ramp (17) connecting ...