coal-breaking machines having rotating drums with lifter shelves and rotary shaft impacting means, including parts therefor, twin-rotor impactors, including parts therefor, [ mill-classifier-beneficiator apparatus, including parts therefor, ] shredders for solid waste reduction, including parts therefor, [ and vibratory screens including parts therefor ]

'apparatus':30 'benefici':29 'break':3 'classifi':28 'coal':2 'coal-break':1 'drum':7 'impact':14 'impactor':22 'includ':16,23,31,39,45 'lifter':9 'machin':4 'mean':15 'mill':27 'mill-classifier-benefici':26 'part':17,24,32,40,46 'reduct':38 'rotari':12 'rotat':6 'rotor':21 'screen':44 'shaft':13 'shelv':10 'shredder':34 'solid':36 'therefor':18,25,33,41,47 'twin':20 'twin-rotor':19 'vibratori':43 'wast':37

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