crucibles, electric arc and plasma gas chambers and torches for use in melting, treating and welding metals, electric arc saws for cutting metals in air, gas or while submerged in water, electric power supplies and controls for metal melting furnaces, and parts therefor

'air':25 'arc':3,19 'chamber':7 'control':36 'crucibl':1 'cut':22 'electr':2,18,32 'furnac':40 'gas':6,26 'melt':13,39 'metal':17,23,38 'part':42 'plasma':5 'power':33 'saw':20 'submerg':29 'suppli':34 'therefor':43 'torch':9 'treat':14 'use':11 'water':31 'weld':16

furnaces for melting and remelting metals with and without a vacuum surrounding the metal, toxic waste incinerators, vacuum arc remelting furnaces, electron beam furnaces, plasma arc furnaces, vacuum induction melting and casting furnaces, plasma cold hearth melting furnaces, plasma pyrolisis and vitrification furnaces for toxic, hazardous and low-level nuclear waste

'arc':19,26 'beam':23 'cast':32 'cold':35 'electron':22 'furnac':1,21,24,27,33,38,43 'hazard':46 'hearth':36 'inciner':17 'induct':29 'level':50 'low':49 'low-level':48 'melt':3,30,37 'metal':6,14 'nuclear':51 'plasma':25,34,39 'pyrolisi':40 'remelt':5,20 'surround':12 'toxic':15,45 'vacuum':11,18,28 'vitrif':42 'wast':16,52 'without':9

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