E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
E21C35/18—Mining picks; Holders therefor
E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
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Mining & Mineral Resources
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Life Sciences & Earth Sciences
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General Life Sciences & Earth Sciences
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Geochemistry & Mineralogy
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Geology
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Processing Of Stones Or Stones Resemblance Materials
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Ferramentas de corte e métodos para produzir uma ferramenta de corte helicoidal e um ângulo de inclinação axial positivo na ponta de broca de uma ferramenta de corte helicoidal.