Apparatus for use in mining, namely, machines for earth drilling and mineral exploration, attachments for drilling machines in the nature of drill bits, core barrels, overshots, stabilizers, reamers, and subs, and equipment for drilling operations in the nature of drilling rigs; Mining machines, namely, earth drilling machines; Machines for use in mines, namely, earth drilling machines; Mine working machines; Mineral processing machines; Machines for cutting surface minerals in mining; Machines for mineral processing; Ore separating machines; Ore treating machines

'apparatus':1 'attach':14 'barrel':25 'bit':23 'core':24 'cut':65 'drill':10,16,22,34,40,46,55 'earth':9,45,54 'equip':32 'explor':13 'machin':7,17,43,47,48,56,59,62,63,70,76,79 'mine':5,42,52,57,69 'miner':12,60,67,72 'name':6,44,53 'natur':20,38 'oper':35 'ore':74,77 'overshot':26 'process':61,73 'reamer':28 'rig':41 'separ':75 'stabil':27 'sub':30 'surfac':66 'treat':78 'use':3,50 'work':58

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